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VOCpro Manual

1. sess 23 3 Using the VOC Pro eee 25 Battery Charging saias sb te te OH 27 Display UA 31 KR naar ET O e Sc Ga Nue Pon o 34 Beginning Operation eesse ecinic niae neseni 35 User Interface Basic Menu 41 Operation Modes nn nimes ntm oies med 41 Datalos ser iecit tee BP oe 44 VOC Pro User Manual Unit Setup Functions oer tees 48 Response Factor Library treisten 54 Calibration Technical Description 58 Calibration Introduction s csecsenc eii is 58 Calibration Using the Regulator eee 61 Calibrating the VOC Pro with a Gas Bag 64 Preparing for Field Operation 65 4 Connecting Accessories 67 Computer cid ia tia 69 Wrist SUD v2 chiens dee decet ee e i eee tan 71 DC Power Cord ee tree Re ee ere tert egenis 71 Belt Chip Holstein anio 72 LT eV UM Lamp emite eee geriet 72 Ott Line Charger pep een 75 5 Routine Maintenance 79 Battery Charging u eet ete lts ia 81 Maintenance of the UV Lamp esee 83 Replacing the Sample Inlet Filter 87 6 Troubleshooting 91 General Information eese eene enne 93 Troubleshootitig et areas 94 General QUESTIONS sisi ice et ici tie in 97 7 Appendices une 101 Specifications cached nce pet Eine 103 han E IE re AR 106 Contacting Casella CEL eene 107
2. 103 Cadmium coccccncnncnnnonnnnnonnnnnnnnnns 82 101 Calibration Gas Bags 64 108 109 Instructions 58 64 Support Equipment 23 Calibration Gas 23 58 60 Material Safety Data Sheet 24 59 Regulator 24 59 61 Specifications 23 24 Supplier ien 108 Carrying Case 24 CGA 590 for Calibration Gas 24 60 Using with Regulator 60 Check List Field Accessories 66 Operational sess 66 Clear Keynote 40 42 Clock fees 48 51 Compound Threshold Limit Values 24 54 57 123 VOC Pro User Manual Compressed Gases Hanidlin east dus 59 Computer Communication 69 Condensation sss 85 87 Consumables essss 23 Contamination Detector 58 59 87 UV Lamp Window 83 Conventions Manual 15 Customer Service 107 Cylinder Calibration Gas 108 Contents 58 Safety Practices 24 60 Data Reviewed ssssee 19 Data Bits oooonocccnnnoccccconaccnonanancnnonns 70 Datalogger Averaging Interval 46 Interval Mode 19 35 40 Memory 42 54 55 Options 19 20 Technical Description 44 Date Seting iii 51 DC Off Line Charge
3. sese 99 Filter Specifications 100 Flow Rate eerte 100 Replacing Filter 85 Instrument Status 38 Interval Averaging unenennesnensesnersennennn 46 Intrinsic Safety 16 I SC Notice 3 Isobutylene esses 21 Keypad Fixed Keys een 34 Key Names 0 0 15 19 Soft Key Simi 32 Specifications 103 LED Battery Pack 29 40 76 Off Line Charger 75 Library Entries 54 115 Maintenance Battery 81 Inlet Filter snif 87 UN Lamp toti 82 Map VOCPro Functions 33 Set Functions 48 Material Safety Data Sheet Calibration Gas 24 59 MAX Mode eed 43 Microprocessor 58 Mode Interval ahi 19 MAX sis 43 Peak u 43 44 STEL sous terms 41 TWA sario dia 42 43 Model VOC Pro Function Map e 33 Overview 18 Response 54 105 115 Specifications 103 Warranty 106 MSDS Vii 24 59 Off Line Charger 70 ON OFF Key 27 33 34 Operating Humidity Range 104 Instructions 31 Temperature Range 104 Operation 11 7 eV UV Lamp 72 Check
4. sss 5 29 75 80 Off Line Charger Operation 70 AGC PIUS 5 5 56 gente den 108 Accept Key nete ete 51 Accessories Computer se 24 47 69 DC Power Cord 71 Off Line Charger 75 Standard uos 4 23 Accumulator TWA usa 43 Accuracy VOC Pro 105 Adapter AC Lia eae 66 75 82 CGA Fittings 24 62 Gas Bag 24 64 108 Tubing for Regulator 61 Alarm Description e 39 103 STEEL Sucios 39 TWA it 39 Appendix Alternate AC Plug 108 Calibration Gas Supplier 108 Contacting Casella 107 Gas Bag estem 108 Library Entries 115 Response Factors 110 Warranty 106 Applications Casella minis men 72 113 Averaging Interval Technical Description 37 40 42 Backliglt ees 50 Index Battery Charger Alternate AC Plug 108 Line Cord 29 108 Off Line Charger 75 Specifications 103 Battery Pack Charging eee 27 29 81 Connector 27 75 76 Cover fee 27 Critically Low sse 81 Disposal inscricion i 82 Handling 82 LED voca 29 40 76 o 30 50 Off Line Charger 70 Recycling eee 80 Removing sesser 27 69 Replacing 27 69 Specifications
5. 37 VOC Pro User Manual Numeric Value Duration Time and Date Entry In cases where the system requires the user to enter a number duration time or date the following mechanism is used The number of digits to be entered depends on the type of value being entered Upon entering a value entry screen a bar icon below the left most digit highlights it as the active digit The up middle soft button and down left soft button arrows are used to increase decrease the digit The bar icon is moved to the next digit to the right using the right soft button Once the user has finished entering the value they use the right soft button to move the bar icon to the far right to highlight the check mark When the bar is under the check mark the left soft button changes to done The user is then able to input the value Pressing the right soft button while the check mark is highlighted will return the bar icon to the left most digit In some cases units may be specified e g ppm or hh mm in others there may be no units No cancel option is available to the user They must input a value Enter new PEAK Enter new PEAK 425 38 Using the VOC Pro Instrument Status The instrument status is shown on the left of the first line of the status display Each status has a priority assigned to it If more than one status is in effect then the status with the highest priority is displayed until the condition is corrected or until
6. Contents Installing Alternate AC Plug on the Battery Charger 108 Calibration Gas Supplier res 108 Using the Gas Bag ee ee 108 System Fuse Valle inci nn 110 Response Factors u ann etr eter teen 110 Presi iia 115 References name ei Ne aset De ee tees dolo 119 OI d TEES 121 VOC Pro User Manual Figures Figure 1 The VOC Pro Instrument 18 Figure 2 The VOC Pro Block Diagram eee 20 Figure 3 Photoionisation Detector 22 Figure 4 Battery Pack Removal and Replacement 28 Figure 5 The VOC Pro Display 31 Figure 6 User Menu ics ere RR RUE ER 33 Figure 7 Logging Off Mode Display 36 Figure 8 Tag Mode Display 36 Figure 9 Interval Mode Display eee 37 Figure 10 Unit Setup Map 48 Figure 11 Setting the Time 51 Figure 12 Calibration with Gas Regulator see 62 Figure 13 Removing the UV Lamp esee 84 Figure 14 Replacing the Inlet Filter 88 Figure 15 Using the Gas Bag 109 vi Contents Tables Table 1 System Alerts cia Bean 39 Table 2 Averaging Intervals and Period STEL TWA and PEAK Operation iai at ee i EROS e qs 46 Table 3 Check List for Field Operation 65 Table 4 Additional Field Items 66 Table 5 Serial Port Signals ss kennen 70 Table 6 Contact Information eres 107 Table 7 Response Factors 111 Table 8 Library
7. s Technical Support Department When you call please have the following information ready 1 A description of what happened and what you were doing when the problem occurred 2 Any corrective action that you have tried 3 The exact wording of any messages that appeared on the display Do not service the VOC Pro in a hazardous location WARNING 93 VOC Pro User Manual Troubleshooting Situation Cause Action Zero Air Error Contamination of sample lines sample probe inlet filter or fittings before the detector Clean or replace contaminated item Span gas and zero air are mixed up Ambient air is contaminated Ensure that clean air is used to zero the VOC Pro If you are using gas bags mark the zero air and span gas bags clearly If you are not sure of the cleanliness of the ambient air use a commercial zero grade air to zero the VOC Pro Span Gas Error Span gas and zero air are mixed up Ensure that clean air is used to zero the VOC Pro If you are using gas bags mark the zero air and span gas bags clearly Span gas concentration is too low Span gas concentration should be higher than 25 ppm UV lamp window is dirty Clean the lamp window See page 85 UV lamp is failing Install a new lamp See Removing and Replacing the UV Lamp on page 83 The concentration and sample gas are not com patible with the VOC Pro Conta
8. Entries een are 115 vii Notices and Warnings Notices and Warnings Notices and Warnings FCC Warning This equipment has been tested and found to comply with the limits for a Class B Digital Device pursuant to Subpart B Class B of Part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at their expense The VOC Pro Intrinsic Safety I S Notice NAIL LISTE CXMETS THE VOC Pro IS CLASSIFIED FOR USE IN CLASS I DIVISION 1 GROUPS A B C D HAZARDOUS LOCATIONS T4 135 C RATING It has been listed by MET to comply with Underwriters Laboratories Inc ULO 913 Standard for Intrinsically Safe Apparatus and Associated Apparatus for use in Class I Division 1 Groups A B C D Hazardous Classified Locations Sixth Edition when powered by G202029 Battery Pack THE VOC Pro IS NOT INTENDED TO DETECT COMBUSTIBLE LEVELS OF GASES THE VOC Pro IS CLASSIFIED FOR USE IN ATMOSPHERES CONTAINING COMBUSTIBLE LEVELS OF GASES These accessories are for use with the VOC Pro
9. each representing a one minute averaging interval Once every minute the oldest of the 15 samples is replaced with a new one minute average This moving average provides a 15 minute average of the last 15 minutes with a one minute update rate Since the average is calculated using 15 one minute averages the meter display will only update once every minute STEL is set to zero each time the instrument is turned on Since STEL is a 15 minute moving average there is no need to clear or reset the STEL 42 Using the VOC Pro STEL calculations are always being performed by the VOC Pro You can display the results of the calculations by selecting Interval Mode Time Weighted Average TWA Mode The TWA accumulator sums concentrations every second until 8 hours of data have been combined If this value exceeds the TWA alarm setting a TWA alarm is generated The TWA is not calculated using a moving average Once 8 hours of data have been summed the accumulation stops In order to reset the TWA accumulator press the Clear key then select TWA using the Down Arrow key then press Clear This sum will only be complete after 8 hours so the meter displays the current sum divided by 8 hours TWA calculations are always being performed by the VOC Pro You can display the results of the calculations by selecting Interval mode PEAK Mode The PEAK mode displays the current detected concentration The reading is upda
10. 60 Computer totem 24 Isobutylene Calibration Gas 23 STEL Alarm eec 39 40 Calculations 42 43 Description eneneenne 42 Mode etti 42 Stop Bits seen 70 Support Equipment 23 Temperature Range 103 Threshold Limit Values TLVs 24 57 58 Time Entering aiii 38 126 Weighted Average See TWA Troubleshooting 91 TWA Al este 40 Calculations sss 43 Mode eite 42 43 UV Lamp LIEN unici etin 72 Cleaning Window 83 Replacing een 80 Technical Description 21 Valve Gas Bag aiios ee 108 A pebllacia o 16 ON 106 Water Exposure To 87 Filter hp anos 87 Weight i rne na artt 99 Wrist Strap 28 VOCPro Approved Models 16 Function Map 48 Intrinsic Safety 3 OV IVIEW eerte paite 18 Response 21 54 110 Specifications 103 Warranty 106 Zero All nenn 59 Regulator seese 23 Specifications sss 23
11. CEL Applications Department for further details Response factor for this compound using the 10 6 eV lamp is equal to 0 00 because the 11 7 eV lamp is required to ionise and detect this compound Please contact Casella CEL Applications Department for further details In cases where recommended exposure limits are below the detection limit for the compound in question the estimated lower limit of detection has been substituted for those values The VOC Pro is not suitable for monitoring these compounds at ACGIH recommended levels A 1000 ppm TWA has been established for those compounds which are Simple Asphyxiants and for which no exposure value exists For those compounds which lack established exposure levels an arbitrary value of 200 ppm has been established for the TWA STEL and PEAK alarms Appendices References 1 Maslansky Carol J and Steven P Maslansky Air Monitoring Instrumentation New York Van Nostrand Reinhold 1993 2 American Conference of Governmental Industrial Hygienists Threshold Limit Values for Chemical Substances and Physical Agents and Biological Exposure Indices 1994 1995 Reprinted with permission NOTE The TLV BEI publication is revised annually 3 National Institute for Occupational Safety and Health NIOSH Recommendations for Occupational Safety and Health Compendium of Policy Documents and Statements January 1992 119 Index Index 121 AC Adapter
12. VOC Pro Comm software is running the PC is ready to receive data from the VOC Pro 5 Onthe VOC Pro the number of data bits has been fixed at 8 stop bits has been fixed at 1 Parity has been set at None and the Flow control is Xon Xoff These values are set automatically by the VOC Pro Comm software 6 Onthe VOC Pro press the MENU key choose Data Log Options then press the SELECT key 7 Choose the Download to PC option using the DOWN ARROW key and press the SELECT key 8 Follow the VOC Pro prompts to start the data download For your reference the pin assignments for all serial port signals are listed below Table 5 Serial Port Signals RXD Outputto PC TXD Input from PC G Input from PC D XD ND crs DCE Output to PC 70 Connecting Accessories Wrist Strap To use the wrist strap 1 Turn off the VOC Pro and then remove the battery cover See Removing and Replacing the Battery Pack on page 27 2 Place the metal ring of the wrist strap in the circular notch located on the battery door 3 Replace the battery cover 4 Adjust the strap length as necessary DC Power Cord The VOC Pro can be connected to a car battery through the cigarette lighter with the DC power cord While the VOC Pro is connected to the car battery the VOC Pro battery is being charged NOTE The VOC Pro is not classified for use in hazardous locations with a DC power cord To connect the V
13. are invalid when an 11 7 eV lamp is installed The response factor must be set to 1 Recalibrate the instrument every 15 minutes of operation Every hour of operation switch off the instrument remove the lamp and examine the window for yellowing If the window is yellow then regenerate the window according to the procedure in Cleaning the Lithium Fluoride Window on page 87 After use remove the lamp and store it in the supplied desiccant bottle Do not leave the 11 7 eV lamp in the instrument when you turn it off Always remove the 11 7 eV lamp and store it in the supplied desiccant bottle 74 Connecting Accessories Off Line Charger General Information The off line charger Part No G202027 allows you to charge a battery pack independently of the VOC Pro To charge a battery pack without removing 1t from the VOC Pro see Battery Charging on page 27 The off line charger requires one of the following the VOC Pro accessories for operation e AC Adapter Part No G202010 North America e AC Adapter Part No G202009 Europe e AC Adapter Part No G202008 UK e DC Power Cord Part No 6202021 Use only the AC adapter specified for use with the VOC Pro Using another AC adapter will result in damage to the battery pack the off line charger or the adapter Charging from an AC Source NOTE Do not charge the battery pack in a hazardous location To re charge your battery pack 1 Remove the battery pack as outli
14. in a hazardous location G202019 Calibration Regulator G202037 Wrist Strap G202018 Belt Clip Holster G202020 Carrying Case G202036 User s Reference Card G202032 Short Sample Probe Do not use any other accessories with the VOC Pro in a hazardous location Substitution of components may affect safety rating CA UTION To reduce the risk of fire or injury to persons read and follow these instructions 1 All calibration maintenance and servicing of this device including battery charging must be performed in a safe area away from hazardous locations Disconnect all power before servicing There are no operator replaceable parts inside the VOC Pro except the battery pack UV lamp and sample inlet filter There are no operator serviceable parts inside the VOC Pro WARNING Notices and Warnings For replacement battery pack use only Part No G202029 Do not dispose of the battery pack ina fire The cells may explode The battery pack must be disposed of properly Check with local codes for possible special disposal instructions Do not open or mutilate the battery pack Ifthe VOC Pro is used in a manner not specified the protection provided by the VOC Pro may be impaired Exercise care in handling battery packs in order not to short the terminals with conducting materials such as rings bracelets and keys The battery or conductor may overheat and cause burns Do not defeat proper polarity orientation betwee
15. in this document is subject to change without notice Casella CEL makes no warranty of any kind with regard to the material including but not limited to the implied warranties of merchantability and fitness for a particular purpose Casella CEL shall not be liable for errors contained herein for incidental or consequential damages in connection with furnishing performance or use of this material Copyright Information This document contains proprietary information that is protected by copyright All rights are reserved No part of this publication may be reproduced in any form whatsoever or translated into any language without the prior written permission of Casella CEL Trademarks Registered names trademarks etc used in this document even when not specifically marked as such are protected by law Contents Contents ubi pee A RE AE vi A RR NOS vil i Notices and Warnings 1 ECC WaEDIg hiesige line 3 The VOC Pro Intrinsic Safety US Notice 3 ATEX Directive and EMC Directive esses 8 2 Introduction Mer 13 About this Manual 15 Warnings and Safety Practices esee 16 Approved Models of the VOC Pro 16 Excessive Heat and Cold 17 VOC Pro Overview dieit toO 18 General Operation ruta Rasen 20 Photoionisation Detector erre 21 Unpacking Instrument essere 23 Support Equipment and Consumables
16. source of zero grade air and a second regulator Zero air should have not more than 0 1 ppm total hydrocarbons THC If compound threshold limit values TLVs are exceeded you should use a gas bag for sampling and calibration To determine the TLV of the compounds contained in the calibration gas refer to the Material Safety Data Sheet MSDS supplied with your calibration gas cylinder NOTE Disconnect the VOC Pro from the AC adapter before beginning calibration Compressed Gases Cylinders of compressed gas such as calibration gas must be handled with extreme care For safety the calibration gas cylinders must be secured before use Please observe the following handling procedures e Mark each new regulator with its intended gas service and never use a regulator for more than one service To ensure safety and avoid contamination regulators should be dedicated to one service Do not change gas service or adapt equipment without consulting your gas supplier e Do not heat or expose cylinders or regulators to temperatures above 52 C 125 F The cylinders may rupture at high temperatures e Use only the specified regulator for the calibration gas Confirm regulator type and material with your specialty gas supplier e Always secure cylinders before removing the cylinder valve protection cap e Do not drag or roll cylinders Large cylinders should only be moved on carts designed for compressed gas cylinders Do not move
17. the option is turned off Table I is a list of the possible system alerts Table 1 System Alerts VOC Pro Display Zero Air Error Zero gas too high Span gas too low Pump fault Low battery Data memory full Passcode to Unlock The Unit is Instrument communicating with PC Communicating with the PC Instrument Over Sample concentration over instrument Range operating range Alarm R Icon Real time concentration alarm Alarm T Icon TWA concentration alarm Alarm S Icon STEL concentration alarm 39 VOC Pro User Manual System Alerts and Alarms While operating the instrument system alerts can occur To accurately identify the source of the alarm each type of alarm has been given a unique status In addition to the status the VOC Pro also has an audio alarm and an alarm LED To conserve power the VOC Pro alternates between the LED and audio Different alarms are identified by the frequency at which the VOC Pro alternates between the audio and LED Peak alarm is 5 times per second STEL alarm is 2 5 times per second and TWA alarm is 1 25 times per second A soft key is used for acknowledging alarms and is named Accept If no alarm exists then the Accept key is not shown To clear the alarm press the Accept key Once acknowledged the alarm indicators are cleared The alarm status will remain until the alarm condition clears The VOC Pro updates the instantaneous concentration once every second
18. when advancing the cursor 4 Use the arrow keys to enter the correct time The time is formatted as Hour Minute 5 Use the RIGHT ARROW soft key until the Checkmark on the display is highlighted Press the DONE soft key to confirm the time and move to the date option 6 When setting the date the VOC Pro prompts you for the current date formatted as Month Day Year Use the ARROW KEYS to enter the correct date 7 Press the DONE soft key to confirm the date and the display will return to the main screen Passcode The Lock key is used to prevent access to the VOC Pro s sensitive options Sensitive options are those which can affect the VOC Pro s readings If any of these functions is selected when the instrument is locked 52 Using the VOC Pro the VOC Pro will prompt you to unlock the instrument before you can access the functions To lock the VOC Pro 1 Press the MENU soft key Highlight UNIT SETUP and press the SELECT soft key Use the DOWN ARROW soft key to highlight PASSCODE the press the SELECT soft key 2 Choose either UNLOCK CHANGE or LOCK soft keys You will be prompted for a passcode Using the UP DOWN and RIGHT ARROW soft keys enter the passcode Press the RIGHT ARROW soft key until the CHECKMARK is highlighted and select the DONE soft key NOTE If you change the passcode make sure you record the setting If you cannot remember your passcode once the instrument is locked there is no
19. 0 ppm isobutylene calibration gas Refer to the check list in on page 65 to ensure you have all the necessary accessories and equipment before beginning field operation Computer The VOC Pro may also be connected to a computer The computer must be a Windows based PC Use the cable kit Part No G202028 to connect the VOC Pro to the computer NOTE The VOC Pro is not classified for use in hazardous locations when connected to a computer 24 Using the VOC Pro 3 VOC Pro User Manual Using the VOC Pro Battery Charging Before beginning operation of the VOC Pro the battery pack must be charged You can also remove the battery pack and replace it with a fully charged spare battery pack Part No G202029 NOTE You must use the 115 220 V battery charger Part No G202007 in order to comply with the requirements of the applicable Council Directives Removing and Replacing the Battery Pack NOTE Do not remove or recharge the battery pack in a hazardous location To remove the battery pack 1 Ifthe VOC Pro has been turned on turn it off by pressing the ON OFF key for five seconds and then releasing it NOTE f you do not turn the VOC Pro off before removing the battery pack you will reset the instrument and you will lose all logged data and setup parameters 2 Locate the battery hatch on the back of the instrument See Figure 4 3 Loosen the two Phillips screws in the top of the battery hatch 4 The battery h
20. EL immediately Support Equipment and Consumables Calibration For normal operation these items are required 1 Calibration Gas Regulator Part No G202019 2 Calibration gas containing 100 ppm isobutylene Part No G202006 Other concentrations of the calibration gas may be required This will depend on your application 3 Zero air Clean ambient air is suitable for calibration 23 VOC Pro User Manual Alternatively you can use a gas sampling bag and a source of hydrocarbon free air Air should not have more than 0 1 ppm total hydrocarbons THC If you will be using large tanks of gas specify a single stage high purity regulator with a CGA 590 connection at the inlet The regulator should also have a 1 8 parallel compression fitting with which to connect the regulator to the gas bag adapter The delivery pressure must be adjustable to between 5 psig 34 5 kPa You may require a gas bag and gas bag adapter Part No G202004 4 If compound threshold limit values TLVs are exceeded you should use a gas bag for sampling and calibration To determine the TLV of the compounds contained in the calibration gas refer to the Material Safety Data Sheet MSDS supplied with your calibration gas cylinder Field Operation For field operation the VOC Pro Field Kit Part No G202041 is available The field kit includes a cable kit a carrying case and a calibration regulator a spare battery pack and a cylinder of 10
21. Following every update the instantaneous concentration is compared to the peak alarm level and if exceeded an alarm is triggered In Interval mode if a 15 minute average exceeds the STEL a STEL alarm is generated The TWA alarm is generated when the current average of concentration since the TWA was last cleared has exceeded the TWA exposure limit During calibration all alarms are disabled Once the calibration is complete the alarms are re enabled 40 Using the VOC Pro User Interface Basic Menu The VOC Pro is designed for ease of use with a logically organized internal menu structure user interface The VOC Pro User Menu is shown in Figure 6 The VOC Pro has three soft keys under the graphic LCD display which always show the available functions of the soft keys in any screen Operation Modes Logging Off Mode Logging Off mode is identified by the word LOG with a diagonal line through the word LOG in the upper right corner of the VOC Pro display Logging Off will continuously display the concentration of total volatile compounds present that the VOC Pro can ionise The reading is updated approximately once per second In Logging Off mode the only soft key displayed is MENU MENU selects the VOC Pro s internal menu for the instrument setup by the user Tag Mode Tag mode is identified by the word TAG in the upper right hand corner of the VOC Pro display Tag mode will continuously display the
22. G202032 Petite Gamme d chantillons Ne pas utiliser d autres accessoires avec cet appareil dans un emplacement dangereux La substitution des composantes peut nuire la s curit d emploi Notices and Warnings ATTENTION Pour r duire le risque de feu ou blessures lisez attentivement ces directive 1 Tout talonnage et entretien incluant le chargement de la batterie doit tre fait dans un endroit s curitaire et non explosif L alimentation lectrique doit tre mis hors service Aucune piece ne peut tre changee par l utilisateur part la batterie Aucun entretien ne peut tre fait par l utilisateur ATTENTION Utilisez seulement des batteries rechargeables de type nickel cadmium avec un chargeur 12 Volts DC Piece G202029 Ne jetez pas les batteries dans le feu Elles pourraient exploser Verifiez avec la reglementation locale avant d en disposer Ne pas ouvrir ou briser la batterie La protection offerte par le VOC Pro sera alors inutile La manutention de la batterie necessite d eviter les produits conducteurs comme des anneaux bracelets ou cl s pour viter tout court circuit La batterie pourrait surchauffer et causer des br lures Ne pas modifier la polarite entre la batterie et le chargeur Utilisez seulement l adaptateur AC specifie dans le manuel Pieces G202007 115 220 Volts AC Ne pas bloquer la sortie de l adaptateur AC Notices and Warnings ATEX Dir
23. List aae 66 From Car Battery 71 ORNS use ii 88 Output AU O seite 103 Serial ains 103 Password sentiment 32 Peak Modes 43 44 Photoionisation Detection 21 Technical Description 21 Casella CEL Applications Department 106 Contacting 106 Service Department 89 A 106 PRECISION ote itte 105 Pump neis 20 ON OFF cnni enr 49 Range Operating Humidity 104 Operating Temperature 104 References ioo 115 Regulator Calibration Gas 60 63 CGA iie eaaet 24 Connecting 58 60 Contamination ess 58 Delivery Pressure 58 Regulator ensnare 61 Reset VOC Pro 28 81 Response Time 105 Response Factor 110 Safety Glasses oce ite 59 Inttins1C inim ees 16 TARA 16 Sensitivity 20 Decreased orein eeens 87 Serial Output nr sieren ie 103 125 VOC Pro User Manual Service Contacting ans 106 Set CLOCK itte etti 52 Functions 48 Pimp 49 Short Term Exposure Limit See STEL Signal From Span Gas 58 From Zero Air 58 duc 103 Soft Key iusti as 33 Entering Text 38 51 Names ess 15 Specifications 103 Calibration Gas 23 58
24. Manual The VOC Pro is not intrinsically safe when connected to an AC adapter WARNING The AC adapter automatically charges at a high charge rate until the battery pack is fully charged It then maintains the full charge with a low continuous charge rate indefinitely so there is no danger of over charging When the Charge LED on the top of the VOC Pro is red the battery is charging When the Charge LED turns green the battery is fully charged Battery Pack Care Leaving the VOC Pro for more than 3 months without charging the batteries may result in the loss of recorded data and setup parameters If the VOC Pro is not used for long periods of time recharge the battery for a few hours every 30 days to avoid loss of data See Battery Charging on page 27 for instructions on charging the battery Please observe the following e For replacement battery pack use only Part No G202029 e Do not dispose of the battery pack in a fire The cell may explode e The battery pack is 24 cadmium Cd by weight This battery pack must be disposed of properly Check with local codes for special disposal instructions e Do not open or mutilate the battery pack e Exercise care in handling battery packs in order not to short the terminals with conducting materials such as rings bracelets and keys The battery or conductor may overheat and cause burns 82 Routine Maintenance e Charge the battery pack using the AC adapter provided with or id
25. OC Pro to a DC power supply 1 Turn the instrument off by pressing the ON OFF key for five seconds 2 Connect the DC power cord Part No G202021 to the VOC Pro AC adapter jack on the rear of the instrument 3 Connect the other end of the DC power cord to the cigarette lighter in the car 4 Turn the instrument on again by pressing the ON OFF key If the vehicle is running ensure the engine exhaust does not contaminate your samples 71 VOC Pro User Manual Belt Clip Holster Use the belt clip holster Part No G202018 to protect the instrument and to mount the instrument to a belt 1 Insert the VOC Pro into the holster 11 7eV UV Lamp General Information The VOC Pro is equipped with a standard 10 6 eV UV lamp An 11 7 eV UV lamp Part No G202003 is available for special applications Install this lamp as outlined in Removing and Replacing the UV Lamp on page 83 When you install a UV lamp other than the standard 10 6 eV lamp all the response factors become invalid You must set the response factor for the current cal memory to 1 Contact Casella CEL s Applications Department for further information NOTE Do not use the 11 7 eV lamp in conjunction with the dilution probe Limitations of Lithium Fluoride Lamp Window This lamp is intended for special applications only It is not suitable for normal operation due to limitations of the lamp window material The 11 7 eV lamp window material is lithium flu
26. OC Pro you are using is not specifically identified as intrinsically safe with a label on the VOC Pro do not use it in a location where flammable concentrations of gases and vapours may exist WARNING Excessive Heat and Cold Do not expose the instrument to intense sunlight for prolonged periods Exposure to excessive heat or cold may result in erroneous readings 17 VOC Pro User Manual VOC Pro Overview Figure 1 The VOC Pro Instrument The VOC Pro measures the concentration of airborne gases and vapours that can be ionised by a photoionisation detector The VOC Pro automatically 18 Introduction displays and can record these concentrations The VOC Pro does not distinguish among individual compounds The reading displayed represents the total concentration of all photoionisable chemicals present in the sample The VOC Pro is factory set to display concentration in units of The VOC Pro operates automatically The VOC Pro display updates itself once per second You can read concentrations directly from the display If you are using the dilution probe Part No G202023 you must multiply the displayed reading by the dilution factor The VOC Pro will perform short term exposure limit STEL time weighted average TWA and PEAK calculations when it is in INTERVAL mode You can view any of these results in INTERVAL mode The VOC Pro has two data logging options Tag and Interval mode Tag mode allows the user to ma
27. SELECT soft key Use the up down and right arrows soft keys to enter the desired number Highlight the CHECKMARK and press the DONE soft key Press the DONE soft key to return to the main display or press the SELECT soft key to edit another value To return to the Main Menu press SELECT then DONE Using the VOC Pro To select a pre programmed compound stored in the VOC Pro s Preset RF library 1 2 Press the MENU key Choose Memory Slots then press the SELECT key Press the EDIT key Press the PRESET key Use the DOWN ARROW key to choose the alpha range of the compound of interest then press the SELECT key Choose the compound of interest using the DOWN ARROW key and press the SELECT key Press the SELECT key to accept the choice or press EDIT to modify the preset values for STEL TWA and real time alarm as shown above 57 VOC Pro User Manual Calibration Technical Description Periodic calibration is required to compensate for the VOC Pro output changes due to inlet filter restriction ionisation chamber contamination lamp cleanliness pump wear and other factors During calibration the VOC Pro is first exposed to zero air A small zero signal is generated This zero signal is stored by the microprocessor The VOC Pro is next exposed to span gas This span gas signal is stored by the microprocessor The microprocessor subtracts the zero signal from the span gas signal and divides the diff
28. SOPRENE 06 Isopropano pa Isopropyl Acetate 2 2 IPACETAT 26 Isopropyl Ether______ IPROPETH 08 Appendices ME MIBK METHMERC 0 5 MeMeACRY MTBE MMeAMINE a nNONANE 1 IOCTANE nPENTANE P PROPANAL 14 8 nPROACE PROPYLEN Propylene Oxide PROPOXID Styrene STYRENE Tetrachloroethylene PCE PCE Tetrahydrofuran THF Toluene TOLUENE Trichloroethylene TCE TRMeAMIN VINACET VINBROM VINCHLOR 1 7 1 1 DCE mXYLENE oXYLENE pXYLENE 0 5 Methyl Ethyl Ketone Methyl Isobutyl Ketone Methyl Mercaptan Methanethiol Methyl Methacrylate Methyl tert Butyl Ether MTBE Monomethylamine i e m Uy A A n Nonane iso Octane 2 2 4 Trimethylpentane n Pentane 10 alo a Ra o gt n Propanol 3 Propionaldehyde Propanal s j n Propyl Acetate Propylene 7 Trimethylamine Vinyl Acetate Vinyl Bromide Vinyl Chloride Chloroethylene Vinylidene Chloride 1 1 DCE meta Xylene m lo e je ja N a ju un Un oo gt an Ui ortho Xylene para Xylene 117 VOC Pro User Manual NOTES 1 118 Peak alarm levels have been established as the TLV Ceiling concentration or the TLV STEL concentration in those cases where no TLV Ceiling value exists In those cases where no STEL exists for a compound the STEL value has been established as equivalent to the TWA value Compound is Not Detectable ND by the VOC Pro Please contact Casella
29. VOC Pro Hand Held Photoionisation Air Monitor User Guide Warning Limitation of Liability The ultimate responsibility of the consequences of use of toxic compounds rests with the user Casella CEL s role is as a supplier of instrumentation to assist in the early detection of hazardous conditions involving such compounds It is vitally important to ensure that the VOC Pro is maintained in accordance with Casella CEL s instructions and that proper calibration is regularly performed As with any complex device the VOC Pro is subject to failure and while Casella CEL has taken and continues to take all possible precautions to a reduce the possibility of failure and b warn the user in the event of failure circumstances may occasionally occur in which there is a failure despite such precautions on Casella CEL s part Casella CEL regrets that it cannot accept liability for damages of any kind caused as a result of either failure of the user to follow instructions or of the VOC Pro to perform Casella CEL VOC Pro Portable Photo ionisation Monitor Casella CEL Ltd Kempston Beds MK42 7JY England 44 0 1234 844100 www casellacel com RELEASE HISTORY Part Number G202033 Revision A Publication date January 2005 User Assistance Casella CEL Regent House Wolseley Road Kempston Beds MK42 7JY England 44 0 1234844100 www casellacel com info casellacel com Notices The information contained
30. WN ARROW key to choose Download to PC then press the SELECT key Press the NEXT key at the Connect Instrument to PC prompt The display will show Downloading Data and data will now download to the PC Press the DONE key to stop the download at any time 47 VOC Pro User Manual Unit Setup Functions Unit setup functions are used to select the VOC Pro features There are five functions which can be set on the VOC Pro Pump Backlight User Mode Clock and Passcode Figure 10 shows a menu detailing the User Setup functions Press the MENU key in any operating mode to access Unit Setup Turn Pump On Tum Pump Off Tum Backlight On Tum Backlight Off Pump User Mode Enter No Log Mode Enter Tag Mode Enter Interval Mode Enter Time PP Enter Date Pass word Figure 10 Unit Setup Map 48 Using the VOC Pro Pump The Pump function turns the pump on and off The detector is turned off when you turn the pump off This prevents the detector from being damaged when there is no sample flowing through the detector When the pump and the detector are off the meter display will read Pump Off Turn the pump and detector off when concentration measurements are not necessary and the VOC Pro will only be used for setup or reviewing data By operating the instrument with the pump and detector off when you do not need them you will conserve the battery and ultraviolet UV lamp To t
31. ace septum with Replace septum after Teflon side down Replace retainer 5 10 injections To replace EE Do not overtighten e 7 septum turn retainer counter ES t Overtightening may result h I clockwise For replacement in needle blocakge X gt septa order Teflon bonded to RE Silcone diameter 375 9 5 mm E Figure 15 Using the Gas Bag 109 VOC Pro User Manual System Fuse Values Module Fuse Voltage Current Type Battery Pack F1 125VDC 750 mA Very Fast Acting Microcontroller Board F1 125VDC 1 5 A Very Fast Acting Display Board F1 F2 125VDC 125 mA Very Fast Acting Display Board F3 125VDC 100 mA Very Fast Acting Response Factors The response factors were determined over the range 5 500 ppm based on a 100 ppm isobutylene calibration Isobutylene RF 1 0 The following formula was used for calculation of response factors Response Factor Actual Concentration VOC Pro Response A response factor less than 1 0 indicates a compound response better than that of isobutylene A response factor greater than 1 0 indicates a lower response than that of isobutylene NOTE It does not matter which response factor is entered The VOC Pro s response is not specific to any one compound The reading displayed represents the total concentration of all ionisable compounds in the sample When using response factors results are expected to be accurate to 10 ppm or 25 whi
32. adings stabilize at a low level Detector has been short circuited by foreign matter in the cell Contact Casella CEL for assistance 96 General Questions Troubleshooting Very low or no instrument response detected yet compounds are known to be present The VOC Pro has not been properly calibrated Verify the concentration of the span gas Calibrate the VOC Pro See page 58 Memory slots are not set up correctly Program the memory slots See page 55 Response Factor has been set to zero Set Response Factor to 1 0 or refer to Table 7 for correct response factor Detector is leaking Ensure the UV lamp is correctly installed Ensure the lamp cover is tight Do not over tighten Ensure the O ring seal on the lamp cover is positioned correctly UV lamp is the incorrect size Contact Casella CEL for correct lamp Sampling environment is extremely humid or it is raining Water vapour is not ionised by the PID Water vapour does scatter and absorb light that causes a higher or lower reading The VOC Pro has been designed to work in a 97 VOC Pro User Manual humid environment but you may notice a decreased response UV lamp is failing Install a new UV lamp See page 83 Erroneous high readings High concentrations of non ionisable compounds Sampling environment is very humid Chemical compoun
33. al Table 2 Averaging Intervals and Period STEL TWA and PEAK Operation Averaging Hours of Operation to Interval Fill the Datalogger 15 sec 62 5 l min 250 2 min 500 1250 3750 The VOC Pro s display can show four values in Interval mode STEL TWA and PEAK plus the instantaneous reading Erasing or Downloading Data There are two options for data manipulation under the Erase Download Data selection Clear Data Log deletes all readings in the VOC Pro memory NOTE Deleted information cannot be recovered You should play back and print or download the contents of the datalogger before deleting any information To empty the data logger in the VOC Pro 1 Press the MENU key 2 Usethe DOWN ARROW key to choose Data Logger Options and then press the SELECT key 3 Choose Clear Data Log and then press the SELECT key 4 Press either the YES or NO key in response to Are you sure you wantto clear all data 46 Using the VOC Pro Download to PC begins download of stored data from the VOC Pro to the PC The VOC Pro computer cable G202028 must be connected between the VOC Pro and the PC before beginning the data download The VOC Pro software package the VOC Pro Comm must be installed and running on the PC prior to download To download data 1 2 Press the MENU key Use the DOWN ARROW key to choose Data Log Options the press the SELECT key Use the DO
34. annot locate a local gas supplier contact Casella CEL s Technical Support Department Using the Gas Bag To fill gas bag 1 Turn the knurled plastic knob counter clockwise to unlock it Use the knurled collar on the valve tube to gently push the valve tube down toward the bag 108 Appendices 2 Turn the knurled plastic knob clockwise to lock the valve tube in place 3 Turn the regulator knob counter clockwise about half a turn to start the flow of gas Fill the gas bag about half full and then close the regulator 4 Open the syringe port and empty the bag Flush the bag a few times with the calibration gas and then fill it 5 To close the gas bag valve turn the knurled plastic knob counter clockwise to unlock it Gently pull the valve tube up to close the valve Turn the knurled plastic knob clockwise to tighten it against the valve tube Once the bag has been filled use the bag and sample as soon as possible NOTE Do not use gas bags to sample unstable or highly reactive compounds Do not use Tedlar bags for storage of hazardous materials Tube Stub Locking Ring Septum Retainer Gas Bag Valve Injection Port Gas Bag Valve Operation OP mo RT To open push tube 1 stub down Flush and Turn locking nut M To close pull tube counterclockwise p 7 stub up Tighten the to loosen Do not remove F locking nut Replacing the Septum Remove retainer and replace silicone septum Pl
35. art No G202006 Spare inlet filters Part No G202030 pack of 25 Carrying case Part No G202020 Instrument manual Part No G202033 DC power cord Part No G202021 65 VOC Pro User Manual If you will be in the field for more than one day you should include the following additional items Table 4 Additional Field Items Y Switchable 115 220 VAC adapter Part No G202007 v Cable kit Part No G202028 Y Computer and associated cables Operational Check List Before beginning field work set up and calibrate the VOC Pro for your particular application To ensure the instrument is in working order before heading into the field 1 Ensure the battery pack is fully charged If you are unsure about the status of the battery replace the battery pack with one that is fully charged See Battery Charging on page 27 2 After calibration is complete sample the calibration gas and the bag of zero air to ensure the VOC Pro has been calibrated correctly 3 Select the correct operating mode See Section regarding Operation Modes page 41 66 Using the VOC Pro Connecting A Accessories 67 VOC Pro User Manual Connecting Accessories Computer The VOC Pro will download information stored in its datalogger to a Windows based computer This option may be used if you need to prepare reports based on the VOC Pro s recorded data This feature may also be used if you need the recorded data in a format th
36. at can be imported into a spreadsheet or database for further calculations NOTE The VOC Pro is not classified for use in hazardous locations when connected to any computer The instructions below will provide you with the basic information for using the VOC Pro with the VOC Pro communications software the VOC Pro Comm In order to use these instructions you must be familiar with Microsoft Windows and it must be installed and running on your computer To initiate communications between the VOC Pro and a PC 1 Turn the VOC Pro off NOTE You must turn the instrument off before connecting or disconnecting the computer cable 2 The VOC Pro must be connected to a serial port Use the computer cable Part No G202028 to connect the VOC Pro to one of the computer s serial ports Remember which serial port you are using as you will need this information when you set up the VOC Pro Communications software Normally you will use Coml or Com2 3 Ifthe VOC Pro printer cable plugs directly into the port on the computer without the gender changer or the 9 to 25 pin adapter you are most probably connected to a parallel port You will need at least one of the adapter cables to connect the VOC Pro to a serial port Once all connections have been made turn on the VOC Pro instrument 69 VOC Pro User Manual 4 Start the VOC Pro Comm software as you would any Windows program The VOC Pro Comm splash screen will appear on the PC Once the
37. ata Log Options bo Erase Log Memory Slots Clear Data Log Edit Interval 15 seconds ab Set 15 sec Interval Be Set 1 min Interval gt Set 2 min Interval Be Set 5 min Interval B Set 15 min Interval Download to PC 1 minute 2 minutes 5 minutes 15 minutes me Connect Instrument to PC Name je Edit Name Response Factor emi Edit RRF STEL Alarm ju Edit STEL TWA Alarm jm Edit TWA Select Slot REAL Time Read me ao Edit REAL l Alarm Displays selected slot settings E Download Data Compounds A B Compounds E G Edit ar Select Presets Compounds C D Slot No 1 Edit gt Preset 2 Slot Compounds H I Edit y Edit Slot Compounds J N Compounds O S Compounds T Z Figure 6 User Menu 33 VOC Pro User Manual Keys Fixed Keys The VOC Pro has two fixed keys The first fixed key is the ON OFF key The second fixed key is the dedicated calibration key Pressing the CAL key will start calibration in almost any mode The ON OFF key is used to both turn power on to the VOC Pro as well as the turn the power off To turn on the VOC Pro press the ON OFF key To turn the power off press the ON OFF key and hold it down for 5 seconds and then release it This is done to prevent accidental power off Soft Keys The three soft keys on the VOC Pro are loca
38. atch can now be removed 5 Liftthe battery pack out of the case and carefully disconnect the battery pack connector from the VOC Pro 6 Attach the connector from the charged battery pack to the VOC Pro 27 VOC Pro User Manual Figure 4 Battery Pack Removal and Replacement NOTE The connector is polarized It will only fit one way Do not force the connection 7 Place the battery pack in the VOC Pro case Ensure the battery wires are not pinched or strained 8 Ensure the wrist strap ring is in proper position This ring holds the wrist strap in place 9 Replace the battery hatch and then replace the two screws Do not over tighten the screws as you will damage the case 28 Using the VOC Pro Charging the Battery Pack NOTE Only use the AC adapter specified for use with the VOC Pro Using another AC adapter will result in damage to the battery pack the VOC Pro or the adapter itself To charge the battery pack 1 2 3 Plug the AC adapter into the jack located on the bottom of the VOC Pro Plug the AC adapter into an AC outlet If you are using the European AC adapter ensure the correct plug is installed on the line cord If it is not correct for the wall outlet in your area then it must be replaced The Charge LED on the VOC Pro indicates the charge state Red indicates the battery is being charged Green indicates the battery is fully charged and ready for use It is normal for a fully charge
39. by leaving it connected to the off line charger while the charger is operating 77 Routine 5 Maintenance Routine Maintenance Battery Charging A fully charged battery pack powers the VOC Pro for approximately 8 hours If the instrument is to be used for more than 8 hours carry a spare battery pack Part No G202029 When the first one has been discharged replace it with the spare NOTE f you do not turn the VOC Pro off before removing the battery pack you will reset the instrument and you will lose all logged data and setup parameters When the VOC Pro displays the low battery symbol the battery pack requires charging When the low battery symbol is displayed you have 30 minutes of operation left The VOC Pro will turn itself off before the battery pack becomes critically low Do not remove or recharge the battery pack in a hazardous location WARNING Upon return from field work charge the battery packs as outlined in Battery Charging on page 27 Use only the AC adapter specified for use with the VOC Pro Optionally you can use the off line charger to charge the battery pack independently of the instrument See Off Line Charger on page 75 NOTE You must use the 115 220 V battery charger Part No G202007 in order to comply with the requirements of the applicable Council Directives If you do not require portable operation you can use the VOC Pro while it is connected to the AC adapter 81 VOC Pro User
40. chever is greater 110 Appendices Table 7 Response Factors Acetaldehyde 10 5 Acetophenone 2 0 assine 1 eo con Benzene Bromoform Tribromomethane ae 1 3 Butadiene n Butyl Acetate Butyl Acrylate Butyl Cellosolve n Butyl Acrylate n Butyl Mercaptan Butanethiol ET ERE Carbon Disulfide Chlorobenzene Crotonaldehyde 2 Butenal Cumene Isopropylbenzene Cyclohexane 111 VOC Pro User Manual Cyclohexanone 09 Lcis 12 Dichloroethylene 08 rans 1 2 Dichloroethytene 04 INN Dimethylformamide DME 0s Ethanol 8 8 T Ethyl Acrylate 2 3 Ethylbenzene 0 5 Ethylene Glycol 0 1 12 Ethylene Ethylene n Heptane 2 4 n Hexane 4 7 2 Heptanone Hydrogen Sulfide Isoamyl Acetate 1 8 Isobutyl Acetate 2 6 Isobutyl Alcohol 0 3 112 Appendices Isobutyraldehyde Isopentane isoprene 2 Methy 1 3 Butadiene 06 Isopropanol 44 O Isopropyl Ether o8 Methyl Bromide Bromomethane 1 6 Methyl Ethyl Ketone 2 Butanone 08 Methyl Mercaptan Methyl tert Butyl Ether MTBE o8 1 4 Monomethylamine n Nonane iso Octane 2 2 4 Trimethylpentane n Pentane Propane n Propanol Propionaldehyde Propanal ads 113 VOC Pro User Manual n Propyl Acetate Propylene Propylene Oxide Styrene Syliherm XLT Era Tetrachloroethylene Perchloroethylene Tetrahydrofuran 1 5 Toluene 1 1 1 Trichloroethane O owo Triethanolamine Tri
41. chloroethylene TCE Trimethylamine 1 3 5 Trimethyl Benzene Vinyl Acetate Vinyl Bromide Vinyl Chloride Chloroethylene Vinylidene Chloride 1 1 DCE meta Xylene ortho Xylene para Xylene 114 Appendices Presets Presets simplify Memory Slot programming and provide standard response factors and alarm levels for approximately 100 compounds The name response factor and three alarm levels are all set from the preset You can change any of the values entered in the Memory Slots Changes made to the library information that has been loaded into a Preset will have no effect on the original library entry NOTE t does not matter which response factor is entered The VOC Pro s response is not specific to any one compound The displayed reading represents the total concentration of all ionisable compounds in the sample Table 8 Library Entries Acrolein Q Propena s ____ ACROLEIN 40 n Butyl Mercaptan Butanethiol nBUTMERC 0 6 Chlorobenzen 2 CHLOBENZ 04 115 VOC Pro User Manual 116 Cumene lsopropylbenzen CUMENE 0 6 Cyclohexane CYCHEXAN 13 Cyclohexanone CYCHEXON 09 Cis 1 2 Dichlorocthylene isI2DCE 08 brans 1 2 Dichloroethylene Imi2pcE 04 N N Dimethylformamide DMF NNDME 08 13 Epichlorohydrins EPICLHYD 65 Ethanol ETHANOL 838 Ethyl Mercaptan Ethanethiol e ETHMERC 0 6 Isoprene 2 Methyl 1 3 Butadiene s I
42. ct Casella CEL for assistance 94 Troubleshooting UV Lamp UV lamp has not started This fault may occur momentarily Error immediately when the VOC Pro is first turned on Allow 60 seconds for UV lamp to start and fault to clear Turn the VOC Pro off then on again Wait 60 seconds for UV lamp to start UV lamp is not installed Install UV lamp See Removing and Replacing the UV Lamp on page 83 Incorrect lamp is installed Use only a getterless UV lamp G202002 or G202003 Electronic problem Contact Casella CEL for assistance Pump Error If the pump sounds labored Check for obstructions in the the pump is operating sample line outside its normal operating range Verify that the sample line sample probe and inlet filter are not blocked Ensure that the sample outlet 1s not blocked The VOC Pro has aspirated a Contact Casella CEL for liquid assistance The pump has failed Contact Casella CEL for assistance Blocked Replace the inlet filter Casella Filter CEL Part No G202030 95 VOC Pro User Manual Instrument over range Display will read AAAA High concentrations of gases will saturate the detector and electronics Wait until the display returns to normal PIDs are designed to detect relatively low levels of gases The detector has become saturated Move the VOC Pro to a location where it can sample clean air Sample clean air until the re
43. cted by the user 50 Using the VOC Pro Clock The Clock function is used to set both the current date and time Entering Numbers with the Soft Keys to Set the Clock For all information that you must enter the left center and right soft keys correspond to the up down and right arrow See Figure 11 The up and down arrows are used to change the character highlighted by the cursor The right arrow is used to advance the cursor to the next character on the right When the cursor is advanced past the right most character or symbol Y it wraps around to the first character again To accept the changes press the DONE soft key when the checkmark is highlighted ne ALARM O O cHance CASELLA VOC Pro Figure 11 Setting the Time The soft keys are defined on the bottom line of the display 51 VOC Pro User Manual To set the time and date 1 2 Press the MENU soft key With Unit Setup highlighted press the SELECT soft key Using the DOWN ARROW soft key highlight Clock Press the SELECT soft key The up and down arrow soft keys are used to change the character underlined by the cursor The right arrow is used to advance the cursor to the next character on the right When the cursor is advanced past the right most character it wraps around to the first character again Formatting characters such as the colon in the time the decimal in a concentration and the slash in date are skipped
44. cylinders without the valve protection cap in place e Wear safety glasses when working with compressed gases 59 VOC Pro User Manual Do not store cylinders in a hazardous location Store cylinders in an upright position away from possible sources of heat or sparks Never plug obstruct or tamper with safety relief devices Regulators for Compressed Gases When connecting a regulator to a large cylinder Ensure cylinder valve and regulator connection match Ensure regulator construction materials are compatible with the gas and that the cylinder pressure gauge will withstand the cylinder pressure Never use the regulator as a shut off valve Close the cylinder when it is not in use Do not subject the regulator to an inlet pressure greater than recommended Do not move or detach the regulator when it is pressurised or when it is in use Before connection ensure the gas cylinder valve and the regulator CGA connection are clean Turn the pressure control valve on the cylinder all the way off close the cylinder Turn the regulator outlet to off Open the gas cylinder valve slowly and check for leaks Adjust the delivery pressure and then open the regulator outlet valve Calibration Gas Adequate ventilation must be provided when the VOC Pro is being calibrated If compound threshold limit values TLV are exceeded you should use a gas bag for sampling and calibration To determine the TLV of the compounds conta
45. d battery to indicate it is charging red light when first plugged in The Charge LED will turn green within a few minutes to indicate the battery is fully charged When the battery pack is fully charged remove the AC adapter first from the wall outlet and then from the VOC Pro Charging a fully discharged battery pack will take approximately 4 hours Optionally you can use the off line charger Part No G202027 to charge the battery pack when not installed in the VOC Pro If you are charging the battery pack in the instrument you can use all the features of the VOC Pro while the battery pack is being charged 29 VOC Pro User Manual Leaving the AC adapter connected to the VOC Pro will not harm the battery or the AC adapter in any way If the VOC Pro is to be left unused for an extended period of time leave it connected to the AC adapter so that the battery will be fully charged and ready for operation On average a fully charged battery pack will provide 8 hours of continuous operation Battery life is shorter if the instrument is turned off and then on again repeatedly or if the backlighting is turned on 30 Using the VOC Pro Display The VOC Pro has a graphic display for reporting the detected concentration and to guide you through configuration options All functions of the VOC Pro will be reported on the display Graphic Display The VOC Pro uses a 128 by 64 graphic display The display will always be used for r
46. dmium Cd by weight 4 hr 8 hr 12 VDC 1 0 A Automatically charges and maintains full charge in battery pack 103 VOC Pro User Manual 104 Casella CEL Part No U S and Canada G202010 G202008 UK G202009 Eur Input 120VAC 60 Hz 21W Output 12VDC 1000mA Regulatory Approvals CSA UL All other Countries Casella CEL Part No G202007 Input 100 250V AC 50 60 Hz 0 5 0 3A Output 12VDC 2 08A Regulatory Approvals CE Mark CSA UL Materials in Stainless steel Teflon sample stream Viton polypropylene nitrile chorobutadiene rubber nickel Inlet filter Replaceable Teflon Polypropylene 1 um Inlet flow rate Greater than 300 mL min Operating temperature range 0 to 40 C 32 to 105 F Operating 0 to 95 relative humidity humidity range non condensing Operating altitude range Up to 10 000 ft 3000 m Storage temperature range 10 to 65 C 14 to 149 F Storage humidity range 0 to 100 relative humidity non condensing Appendices Storage altitude range Up to 15 000 ft 4570 m Operating concentration range 0 5 to 2000 ppm isobutylene Accuracy 10 or 2 ppm whichever is greater Precision 1 of calibration calibrated with 100 ppm isobutylene Response time Less than 3 seconds to 90 Detection limit 0 5 ppm isobutylene Dilution probe Normal calibration concentrations between 100 to 20 000 ppm 20 High accuracy calibratio
47. ds with an ionisation potential higher than 10 9 eV or 11 9 eV scatter and absorb UV light Sensitivity may be decreased Contact Casella CEL for more information Water vapour may contain mineral salts which carry a charge The water vapour becomes an electrolytic solution which becomes ionised when it enters the detector The VOC Pro is not properly calibrated Memory Slots have not been properly programmed Ensure that the calibration gas is the correct concentration and calibrate the VOC Pro as described on page 58 Program the memory slots See page 55 Detector has been short eircuited by foreign material Contact Casella CEL for assistance Date and time setting are not retained The battery pack was removed before the VOC Pro was turned off Replace the battery pack and reset the time and date See page 27 98 Troubleshooting The VOC Pro has not been used for 3 months or more Connect the VOC Pro to the battery charger and recharge the battery Reset the date and time Display is blank Battery pack is critically low Recharge or replace the battery pack The battery pack is not connected to the VOC Pro properly Ensure the battery pack connector is securely attached to the VOC Pro Sample flow is Inlet filter is plugged Replace the inlet filter See less than 300 page 87 ml min Inlet filter is incorrectly Ensur
48. e risk of explosion only use AC Adapter and Serial Port or recharge the batteries outside of the hazardous location Avertissement Afin de prevenir l inflammation d atmosph res dangereuses ne charger les batteries que dans des emplacements designes non dangereux Use only Casella battery pack Part No G202029 WA R NI NG All calibration maintenance and servicing of this device including battery charging must be performed in a safe area away from hazardous locations 10 Disconnect all power before servicing Do not open UV Lamp Cap when unit is energized Only use the AC Adapter in a safe area away from hazardous locations Only use the Serial Port in a safe area away from hazardous locations Notices and Warnings CAUTION To reduce the risk of fire or injury to persons read and follow these instructions 1 There are no operator replaceable parts inside the VOC Pro except the battery pack UV lamp and sample inlet filter 2 For replacement battery pack use only Casella CEL Part No G202029 3 There are no operator serviceable parts inside the VOC Pro 4 Do not dispose of the battery pack in a fire The cells may explode The battery pack must be disposed of properly Check with local codes for possible special disposal instructions 5 Do not open or mutilate the battery pack If the VOC Pro is used in a manner not specified the protection provided by the VOC Pro may be impaired 6 Exercise care in
49. e the VOC Pro quickly this manual is organized by tasks beginning with Using the VOC Pro in Chapter 3 Accessories are covered in Chapter 4 Routine maintenance is covered in Chapter 5 Troubleshooting techniques are covered in Chapter 6 The VOC Pro manual uses a few conventions for key names on the keypad and for text that is shown on the display UPPERCASE Fixed key names are denoted by uppercase text Display Text Text that appears on the VOC Pro status display is in quotation marks Soft key names are also shown in quotation marks 15 VOC Pro User Manual In the text you will find various warnings and notes A warning indicates an operation that could cause personal injury if precautions are not followed WARNING A caution indicates an operation that could cause instrument damage if precautions are not followed CAUTION NOTE A note indicates significant information Warnings and Safety Practices Please read the Notices and Warnings section of this user s manual before operating the VOC Pro Approved Models of the VOC Pro This manual provides operational information for all models of the VOC Pro The VOC Pro is intrinsically safe and approved for use in hazardous locations Refer to the Notices and Warnings section of this manual for details of each approval 16 Introduction Throughout the manual notes are provided to inform you of the limitations of usage for the VOC Pro models If the V
50. e the inlet filter is installed installed correctly See page 87 Sample outlet is blocked Clear blockage from sample outlet Pump has been damaged Contact Casella CEL for assistance Liquid has The VOC Pro has been Contact Casella CEL for been aspirated exposed to a solvent that assistance can pass through the inlet filter Very corrosive gases have Contact Casella CEL for been sampled assistance Cannot download data to PC Cable is not connected Connect the VOC Pro to the PC See page 69 99 Troubleshooting Appendices T 101 VOC Pro User Manual 102 Specifications Size Weight Detector Keypad Display Datalogger memory Serial output Audio output Inlet connection Battery type Charge discharge time Input Power Battery charger Appendices 9 228 6 mm long x 3 76 2 mm deep x 4 25 107 9 mm wide at display tapering to 2 6 66 mm at handle 1 9 pounds 0 86 kg Instant on photoionisation detector with standard 10 6eV UV lamp optional 11 7 eV lamp available 5 keys with tactile feedback 128 x 64 LCD display for alphanumeric readouts and soft key display 15 000 entries RS 232 9600 baud 8 data bits with no parity for connection to a Windows compatible computer 80 decibels 2048 Hz on Alarm 1 8 3 175 mm fitting Nickel cadmium rechargeable cell with intelligent charger The battery pack is 24 ca
51. e the instrument unconnected so it can sample clean ambient air Then press the Next key The VOC Pro will take 60 90 seconds to set the zero point for calibration The VOC Pro display will show Zero air calibrated Continue calibration Press the Next key Enter the span gas concentration if the concentration displayed on the VOC Pro is different than the concentration of the span gas cylinder Press the New key and follow the display prompts If the span concentration matches the span gas cylinder concentration press the Next key Connect the VOC Pro to the sample bag containing the span gas The VOC Pro will take 60 90 seconds to set the span set point When finished with the calibration the VOC Pro will display Calibration complete NOTE While the Cal status is active all alarms are deactivated 64 Using the VOC Pro Preparing for Field Operation Field Check List When using the VOC Pro for field operation the following items should be carried into the field to reduce or eliminate down time of the instrument If you are going to be in the field for a single 8 10 hour day then you should include the following accessories Table 3 Check List for Field Operation Spare battery pack Part No G202029 Spare 10 6 UV lamp Part No G202002 VOC Pro multi tool Part No G202026 Short sample probe Part No G202032 Calibration regulator Part No G202019 Tank s of calibration gas P
52. ective and EMC Directive EC Declaration of Conformity We Casella CEL Ltd Regent House Wolseley Road Kempston Bedford England MK42 7JU declare that Equipment Photoionization Monitor Model name VOCpro In accordance with the following Directives 94 9 EEC ATEX Directive 89 336 EEC The Electromagnetic Compatibility Directive has been designed and manufactured to the following standards Safety EN61010 1 2001 EMC EN61326 1997 A1 1998 and A2 2001 Explosive Atmosphere EN50014 1998 and EN50020 2002 I hereby declare that the equipment named above has been designed to comply with the relevant sections of the above reference standards and all essential requirements of the Directives Signed by FA LA Name Steve Tearle Title Technical Director Done at Kempston Bedford England On 21 January 2005 Model VOC Pro Photoionisation Air Monitor Certified Intrinsically Safe S curit Intrinseque Class I Division 1 Groups A B C and D Maximum surface temperature 135 C T4 Casella CEL Ltd Regent House Wolseley Rd Kempston Bedford England MK42 7JY Model VOC Pro TRL 03ATEX21022X C 3 0000 les EEx ib IIC T4 Ta 0 C to 40 C WARNING Substitution of components may impair intrinsic safety Avertissement La substitution de composants peut compromettre la s curit intrins que To prevent ignition of flammable or combustible atmospheres disconnect power before servicing CAUTION To reduce th
53. entified for use with this product only in accordance with the instructions and limitations specified in this manual For AC adapter use only Part No G202010 North America or G202009 Europe or G202008 for UK Maintenance of the UV Lamp Removing and Replacing the UV Lamp NOTE Do not remove or replace the UV lamp in a hazardous location To remove the UV lamp from your instrument 1 Ensure the instrument is turned off You must turn the instrument off before removing the lamp cover WARNING 2 Remove the lamp housing cover 3 Tilt the VOC Pro slightly and remove the UV lamp Do not touch the wire grid inside the detector cell Any dust or dirt in the detector cell can be blown out with a gentle jet of compressed air Do not insert any object other than the UV lamp into the lampholder WARNING 83 VOC Pro User Manual 4 Without touching the lamp window place the new lamp into the VOC Pro lamp holder window first See Figure 13 CS Figure 13 Removing the UV Lamp NOTE Do not force the lamp into the lampholder 5 Replace the lamp housing cover Tighten the cover down Do not overtighten 6 Calibrate the VOC Pro and then continue normal operation 84 Routine Maintenance Cleaning the UV Lamp Window During the course of normal operation a film builds up on the window of the UV lamp The rate at which the film develops depends on the type and concentration of the gases and
54. eporting the detected concentration In order to accommodate the range of concentrations the VOC Pro can detect the meter reading will be reported using one of 2 resolutions A resolution of 0 1 will be used for concentrations below 100 ppm and a resolution of 1 will be used for concentrations above 100 ppm CHARGE CASELLA VOC Pro Figure 5 The VOC Pro Display 31 VOC Pro User Manual The display reports instantaneous concentration at all times when the pump is on In Interval mode the display will report instantaneous concentrations as well as PEAK STEL or TWA The VOC Pro is designed for ease of use with a logically organized internal menu structure user interface The VOC Pro User Menu is shown in Figure 6 The VOC Pro has three soft keys under the graphic LCD display which always show the available functions of the soft keys in any screen 32 Using the VOC Pro f Turn Pump On jul Turn Pump Off VOC Pro Menu Tree Backlight On Backlight Off B Turn Backlight On gt Turn Backlight Off Backlight Pump Backlight User Mode Clock Passoode Set Date Format Language Logging Off Enter No Log Mode Tagging P Enter Tag Mode Interval P Enter Interval Mode Enter Time es Enter Date Set Date Format Password Check Select Language Unit Unlocked Passoode Changed Unit Locked Unit Setup D
55. erage This moving average provides a 15 minute average with a one minute update rate so the meter display will only update once every minute STEL is set to zero each time the instrument is turned on STEL calculations are always being performed by the VOC Pro You can display the results of the calculations by selecting STEL as the Display mode TWA mode sums concentrations every second until 8 hours of data have been accumulated Once 8 hours of data have been summed the accumulation stops 44 Using the VOC Pro This sum will only be complete after 8 hours so the meter displays the current sum divided by 8 hours While you are in TWA mode the time on the status display will show the number of minutes and hours of data that TWA has accumulated When this reaches 8 hours the VOC Pro stops accumulating data and the TWA is complete TWA calculations are always being performed by the VOC Pro You can display the results of the calculations by selecting TWA as the Display mode Interval mode logs readings at user selected intervals of 15 seconds 1 minute 2 minutes 5 minutes and 15 minutes Interval simultaneously displays the STEL TWA and PEAK reading along with the instantaneous reading The VOC Pro s datalogger can store 15 000 entries The interval you select will determine the period of operation At the end of the period the datalogger will be full and you will see the Data Log Full status 45 VOC Pro User Manu
56. erence by the user entered span gas concentration The resulting sensitivity is stored in the selected Memory Slots with the zero signal and the alarm levels This number is then multiplied by the response factor and displayed The VOC Pro readings are always relative to the calibration gas After calibration with isobutylene the VOC Pro will respond directly in units equivalent to isobutylene Most volatile organic compounds will be detected by the VOC Pro It cannot distinguish between isobutylene and other ionisable compounds A reading of 10 ppm indicates all ionisable compounds that are present have generated an ion current proportional to 10 ppm of isobutylene The reading is actually 10 ppm isobutylene equivalent units The VOC Pro readings give an indication of the total ionisables present and their concentration relative to the calibration gas Calibration Introduction The VOC Pro must be calibrated in order to display concentration in ppm units equivalent to the calibration gas First a supply of zero air which contains no ionisable gases or vapours is used to set the VOC Pro s zero point Then a calibration gas containing a known concentration of a photoionisable gas or vapour is used to set the sensitivity Clean indoor ambient air may be substituted for a cylinder of zero air Due to the VOC Pro s sensitivity outdoor air is usually unsuitable for 58 Using the VOC Pro calibration For best accuracy use a commercial
57. handling battery packs in order not to short the terminals with conducting materials such as rings bracelets and keys The battery or conductor may overheat and cause burns 7 Do not defeat proper polarity orientation between the battery pack and battery charger 6 Charge the battery pack using the AC adapter provided with or identified for use with this product only in accordance with the instructions and limitations specified in this manual For AC adapter use only Part No G202007 115 220 Volts AC When using the AC adapter do not block access to AC outlet in use with adapter AC adapter is not to be used in a hazardous area 11 These optional accessories may be used with the VOC Pro in a hazardous location G202019 G202037 G202018 G202020 G202036 G202032 Calibration Regulator Wrist Strap Belt Clip Holster Carrying Case User s Reference Card Short Sample Probe Do not use any other accessories with the VOC Pro in a hazardous location 12 Introduction Introduction 2 Introduction About this Manual This manual provides detailed instructions for setup operation and maintenance of the VOC Pro Portable Photoionisation Monitor Before unpacking the instrument please read Warnings and Safety Practices on page 16 This section describes possible hazards that might injure the user damage the instrument or compromise its operation Some general safety information is also provided To help you learn to us
58. icroprocessor gt VO Connector Electrical Connections Gas Connections mm Figure 2 The VOC Pro Block Diagram The microprocessor controls the components of the instrument and interprets and records the signal generated by the photoionisation detector PID Recorded data and setup information entered into the microprocessor s memory are retained when the VOC Pro is turned off A pump continuously pulls the air under test through the VOC Pro s PID The PID converts the concentration of photoionisable compounds in the sample into an electrical signal The microprocessor subtracts any background from the signal and divides this signal by a sensitivity obtained by calibrating with a standard gas of known concentration This concentration appears on the VOC Pro s display and depending on the values entered through the VOC Pro s keypad an alarm status may be displayed and an audio signal may be heard 20 Introduction The VOC Pro can detect thousands of different types of airborne gases and vapours and its response depends on the characteristics as well as the concentration of each compound The VOC Pro does not distinguish one type of compound from another but displays a number indicating the total concentration of all photoionisable compounds in the sample A standard of isobutylene at a known concentration may be used for setting the sensitivity If the VOC Pro is calibrated with isobutylene it displays concentration
59. ined in the calibration gas refer to the Material Safety Data Sheet MSDS supplied with your calibration gas cylinder 60 Using the VOC Pro Calibration Using the Regulator Connecting the Regulator to the Cylinder Observe proper handling procedure for all gases WARNING To connect the regulator to the gas cylinder 1 Connect the regulator to the calibration gas cylinder 2 If you are using a portable tank of calibration gas Part No G202006 connect the regulator Part No G202019 directly to the tank 3 When the regulator is connected properly you can read the cylinder contents from the regulator gauge 4 Connect the adapter tubing to the regulator 61 VOC Pro User Manual Figure 12 Calibration with regulator Calibrating the VOC Pro with the Regulator 1 Ensure that the short sample probe is connected to the VOC Pro inlet If you are using the long probe for sampling then ensure the long probe is connected to the VOC Pro NOTE Ensure the sample probe is free of any contamination as this will affect the calibration 2 Press the CAL key 3 Follow the instructions on the display and connect the VOC Pro to zero air or leave the instrument unconnected so it can sample clean ambient air Then press the Next key The VOC Pro will take 60 90 seconds to set the zero point for calibration 62 Using the VOC Pro 4 The VOC Pro display will show Zero air calibrated Continue calibratio
60. instantaneous concentration of total volatile compounds Tag mode also allows the user to manually tag and datalog readings Tag mode allows the user to datalog a background reading a sample reading and assign Site Codes to readings Site Codes are set using the VOC Pro Comm software See Chapter 4 Connecting Accessories for more information on how to use the VOC Pro Comm software In Tag mode the soft keys are VIEW TAG and MENU 41 VOC Pro User Manual VIEW selects datalogger review TAG selects No Label Background or Sample MENU selects the VOC Pro s internal menu for the VOC Pro setup by the user Interval Mode Interval displays the instantaneous readings as well as STEL TWA and PEAK readings Interval mode is identified by the letters INT in the upper right hand corner of the VOC Pro display Interval automatically calculates and updates STEL TWA and PEAK readings Interval mode also automatically stores these readings in the VOC Pro s memory at a preset interval selected by the user In Interval mode the soft keys are VIEW CLEAR and MENU VIEW selects datalogger review CLEAR selects clearing the values for TWA PEAK ALL MENU selects the VOC Pro s internal menu for the VOC Pro setup by the user Short Term Exposure Limit STEL Mode The Short Term Exposure Limit STEL mode displays the concentration as a 15 minute moving average The VOC Pro maintains 15 samples
61. le the charger is operating Charging from a DC Source To re charge your battery pack 1 76 Remove the battery pack as outlined in Removing and Replacing the Battery Pack on page 27 2 Connecting Accessories Attach the connector from the battery pack to the socket on the off line charger NOTE The connector is polarized It will only fit one way Do not force the connection 3 10 Plug the DC power cord into the jack on the opposite face of the off line charger Plug the DC power cord into a vehicle auxiliary 12 VDC or cigarette lighter socket The LED on the upper face of the off line charger indicates the charge state of the battery pack Red indicates the battery is being charged Green indicates the battery is fully charged Charging a fully discharged battery pack will take approximately 4 hours It is normal for a fully charged battery pack to indicate it is charging red light when first plugged in The LED will turn green within a few minutes to indicate the battery is fully charged When the battery pack is fully charged remove the DC power cord first from the vehicle auxiliary 12 VDC or cigarette lighter socket then from the off line charger Remove the battery pack connector from the socket on the off line charger Replace the battery pack in the VOC Pro as outlined in Battery Charging on page 27 You can keep the battery pack fully charged indefinitely without overcharging it
62. mp Driver x E Circuit k UV Lamp Microprocessor High Voltage Light Sensor Electrometer 125 Volts Detector Cell Sample In wv R e i UV Lamp UV Light j Collector Electrode Repeller Electrode M hv gt M e lonized Molecule Figure 3 Photoionisation Detector The ionised molecules in the detector cell are subjected to a continuous electric field between the repeller electrode and the collector electrode The ions move in the electric field generating a current which is proportional to the concentration of the ionised molecules in the detector cell An electrometer circuit converts the current to a voltage which is then fed to the microprocessor The UV lamp is operated by a high voltage lamp driver circuit which delivers high voltage energy to the lamp through plates in the lamp holder The lamp driver power supply is controlled by the microprocessor based on a feedback signal from a light sensor on the driver circuit board 22 Introduction Unpacking Instrument Remove the VOC Pro from its shipping box The following accessories are included with the VOC Pro 1 Sample Probe Replacement Sample Inlet Filters 10 pieces 2 Instrument Manual 3 Multi Tool 4 AC Adapter or AC Adapter with AC Line Cord 5 Wrist Strap 6 7 Reference Card Ensure that all of these accessories have been included with the instrument If any items are missing or damaged contact Casella C
63. mpound its response is not specific and the presence of another ionisable impurity may render the numerical result invalid It is often impractical to carry a range of different standards into the field Approximate results can be obtained by calibrating the VOC Pro with the recommended span gas and entering the appropriate response factor The response factor is based on the ratio of the response of the specific compound to the response of the span gas The response factor multiplies the VOC Pro s reading then displays and records it Table 7 on page 110 provides a list of response factors This list should be used only for concentrations up to 500 ppm of the specific compound as response factors change with concentration 54 Using the VOC Pro The VOC Pro is a total VOC instrument and will ALWAYS respond to all ionisable compounds present in a sample The VOC Pro will NEVER respond only to a specific compound if an RF is programmed It is the responsibility of the user to be aware of the limitations of PID instruments WARNING Response Factors and Memory Slots Compounds A B Name Edit Name Compounds C D Compounds E G Egit or Compounds H I Select Slot No 1 Response Factor Edit RRF Edit Slot STEL Alarm Edit STEL E N Presets Real Time Reading le Select Slot Alarm Edit Real Compounds O S TWA Alarm Edit Name Compounds T Z Edit Slot Displays selected slot settings Response factors built i
64. n Press the Next key 5 Enter the span gas concentration if the concentration displayed on the VOC Pro is different than the concentration of the span gas cylinder Press the New key and follow the display prompts For further information see page 38 for numeric value duration time and date entry If the span concentration matches the span gas cylinder concentration press the Next key To exit calibration press the Cancel key 6 Ensure the calibration gas cylinder is upright and open the regulator by turning the valve counter clockwise Open the regulator until the ball is 1 8 3mm from its rest position 7 The VOC Pro will take 60 90 seconds to set the span set point When finished with the calibration the VOC Pro will display Calibration complete NOTE Ifyou are not using the Casella CEL Regulator ensure that the inlet pressure is less than 5 psi when calibrating NOTE While the Cal status is active all alarms are deactivated 63 VOC Pro User Manual Calibrating the VOC Pro with a Gas Bag 1 Ensure the short sample probe is connected to the VOC Pro inlet If you are using the long probe for sampling then ensure the long probe is connected to the VOC Pro NOTE Ensure the sample probe is free of any contamination as this will affect the calibration 2 3 Press the CAL key Follow the instructions on the display and connect the VOC Pro to zero air sample bag or leav
65. n concentrations between 100 to 1000 ppm 15 Concentrations between 1000 to 20 000 ppm 20 NOTE Specifications subject to change without notice 105 VOC Pro User Manual Warranty The VOC Pro is warranted for one year against defects in materials and workmanship Casella CEL warranties that its manufactured product will be free from defects in materials and workmanship for a period of one 1 year from the date of shipment by Casella CEL This may be voided if in the opinion of Casella CEL the product has been abused or treated in a negligent manner so as to cause damage or failure Negligent use includes but is not limited to exposure of the internal parts of the equipment to water Damage caused thereby is expressly excluded from this Warranty Consumable supplies and parts routinely replaced are not warranted Casella CEL and its vendors disclaim any implied warranty of merchantability or fitness for a particular purpose Casella CEL and its vendors will not be liable for any indirect special incidental or consequential damages irrespective of whether Casella CEL or the vendor has advance notice of the possibility of such damages Casella CEL s sole liability under this warranty is limited to the repair or replacement of the product at Casella CEL s discretion at its Service Repair facility and return to the Customer The customer is responsible for insurance and shipping to the designated Casella CEL Se
66. n the battery pack and battery charger Charging the battery is only to be done in a non hazardous area Charge the battery pack using the AC adapter provided with or identified for use with this product only in accordance with the instructions and limitations specified in this manual For AC adapter use only Part No G202007 115 220V When using the AC adapter do not block access to AC outlet in use with adapter AC adapter is not to be used in a hazardous area ATTENTION VOC Pro EST CLASSIFI POUR USAGE DANS LES EMPLACEMENTS DANGEREUX DE CLASSE I DIVISION 1 GROUPES A B C D VALUATION T4 135 C VOC Pro est conforme la norme des Underwriters Laboratories Inc UL 913 Standard for Intrinsically Safe Apparatus and Associated Apparatus for use in Class I Division 1 Groups A B C D Hazardous Classified Locations Quatri me dition VOC Pro est conforme la norme de CSA Standard 22 2 No 157 92 Intrinsically Safe and Non Incendive Equipment for Use in Hazardous Locations VOC Pro EST NE PAS INTENDER POUR D TECTER DES NIVEAUX DE COMBUSTION DES GAZ CET APPAREIL EST CLASSIFI POUR USAGE DANS DES ATMOSPHERES CONTENANT DES NIVEAUX DE COMBUSTION DES GAZ Les accessoires suivants peuvent galement tre utilis s avec l appareil dans un emplacement dangereux G202019 R gulateur de calibration G202037 Sangle de poignet G202018 tui de ceinture G202020 tui de transport G202036 Carte de r f rence
67. ned in Battery Charging on page 27 2 Attach the connector from the battery pack to the socket on the off line charger NOTE The connector is polarized It will only fit one way Do not force the connection 75 VOC Pro User Manual 3i 10 Plug the AC adapter into the jack on the opposite face of the off line charger Plug the AC adapter into an AC outlet If you are using the European AC adapter ensure the correct plug is installed on the line cord If it is not correct for the wall outlet in your area then it must be replaced The LED on the upper face of the off line charger indicates the charge state of the battery pack Red indicates the battery is being charged Green indicates the battery is fully charged Charging a fully discharged battery pack will take approximately four hours It is normal for a fully charged battery pack to indicate it is charging red light when first plugged in The LED will turn green within a few minutes to indicate the battery is fully charged When the battery pack is fully charged remove the AC adapter first from the wall outlet then from the off line charger Remove the battery pack connector from the socket on the off line charger Replace the battery pack in the VOC Pro as outlined in Removing and Replacing the Battery Pack on page 279 You can keep the battery pack fully charged indefinitely without overcharging it by leaving it connected to the off line charger whi
68. nto the VOC Pro are used to correct for the response of the PID to a specific compound These correction factors are often called response factors RF The VOC Pro has 15 memory slots Each memory slot can store one preset RF Library RF selections simplify Memory Slot programming and provide standard response factors for approximately 100 compounds CHOOSE FROM PRESETS allows you to select an entry from a pre programmed Library The name response factor and three alarm levels are all set from the library To select a preset to program the selected Memory Slot Press MENU choose Memory Slots and then use the DOWN ARROW soft key to highlight Memory Slots then press the SELECT soft key To select a memory slot 55 VOC Pro User Manual 56 Press the DOWN ARROW key until the memory slot you wish to use is highlighted Press the SELECT key The memory slot compound RF TWA STEL and Real time Alarm value are displayed Press the DONE key to return to the main menu To edit a memory slot 1 Press MENU then the DOWN ARROW key to highlight Memory Slot then press SELECT Press the SELECT key to view the Memory Slot content and then press the DONE key to return to the Main Menu Press the EDIT key to change the value for Relative Response Factors RRE or the REAL STEL and TWA alarms Press the EDIT soft key highlight either Name RRF STEL TWA or REAL using the DOWN ARROW key then press the
69. nually tag and store readings during a walkthrough Interval mode allows the user to datalog at selectable intervals of 15 seconds 1 minute 2 minutes 5 minutes and 10 minutes In Interval mode the STEL PEAK and TWA are calculated If you select Interval mode these values are automatically recorded in the VOC Pro s memory The VOC Pro can log up to 15 000 entries In Tag mode operation the VOC Pro prompts you to locate a site and then to record a background and sample reading for the site You can record up to 15 000 manual entries There is no averaging of data in Tag mode Tags are set via the PC using the VOC Pro Comm software Recorded data can be reviewed on the display or downloaded to a computer Data are recorded by date and time The VOC Pro has 5 keys for instrument operation The keys are used to set up and calibrate the VOC Pro All information entered with the keys and stored in the VOC Pro s memory is retained when the instrument is switched off The clock and calendar continue to operate and do not need to be reset when the VOC Pro is turned on 19 VOC Pro User Manual General Operation The VOC Pro is a microprocessor controlled air monitor for measuring the presence of photoionisable compounds in air at parts per million levels The block diagram in Figure 2 shows the main components of the VOC Pro Sample In Sample Out y Inlet Photoionization Filter Detector Power Display and Supply gt M
70. oride LiF LiF is composed of two light elements which are easily disrupted within the crystal 72 Connecting Accessories lattice by the UV light generated by the lamp Disruption of the lattice causes the crystal to turn a yellowish color and performance may decline Unlike other lamp windows LiF readily absorbs water from atmospheric humidity When contaminated by moisture the window loses its ability to transmit UV light NOTE Do not touch the lamp window or handle it near water Using the 11 7 eV UV Lamp With an 11 7 eV lamp installed your instrument functions as a detector responding to compounds which ionise at 11 7 eV or less The 11 7 eV lamp may be useful for detecting compounds not ionised by the standard 10 6 eV lamp Due to the LiF lamp window limitations the lifetime of the 11 7 eV lamp may be shortened and it should be used sparingly according to the following instructions To use the 11 7 eV lamp in your the VOC Pro 1 Remove the 11 7 eV lamp from the supplied desiccant bottle and install the lamp as outlined in Removing and Replacing the UV Lamp on page 80 NOTE Do not remove or replace any detector lamp in a hazardous location 2 Turn the instrument on and wait for the ready status If the lamp cannot be started contact Casella CEL s Technical Support Department 3 Calibrate the VOC Pro See Calibration Using the Regulator on page 61 73 VOC Pro User Manual 4 All response factors
71. r Operation 75 Power Cord 69 75 Default Display 35 Detection Limit 105 Detector Cela dd 49 83 Contamination ees 87 Photoionisation 21 Technical Description 21 Turning Off 49 Dilution Probe Specifications s 105 Dimensions enn 103 Display Details dades 35 124 Resolution 31 35 Specifications 105 STATUS nennen 39 Exposure to Excessive Heat 17 to Intense Sunlight 17 Field Ktm 24 65 Field Operation 24 Accessories Check List 65 Filter Sample Inlet 87 Met acere te eed 87 Functions Map sho 34 Seti ctis madame 48 Gas Bag eese reete 24 Adapter css 24 64 Contamination sess 64 Pilling S A ie 64 109 Preparation 64 109 Valve asset memet 109 Gases Compressed Handling Procedures NS 59 Response Factors 110 Harmonization Mark 108 Hazardous Location 4 12 Charging Battery Pack 12 27 75 A eee eee 24 69 DC Power Cord 7 Replacing Inlet Filter 87 Humidity Operating Range 104 Inlet Connection
72. rvice Repair facility 106 Appendices Contacting Casella CEL To place an order 44 0 1234 844100 check the status of an order obtain current pricing and availability Service and repair of our instrument Technical Support 44 0 1234 844100 Department Customer Service Casella CEL Ltd Worldwide Regent House Wolseley Road Kempston Beds MK42 7Jy England 44 0 1234844100 www casellacel com info casellacel com Table 6 Contact Information 107 VOC Pro User Manual Installing Alternate AC Plug on the Battery Charger In most cases the VOC Pro will be shipped with an AC line cord that will fit the AC wall outlet in your area If this cannot be done you may need to obtain an AC line cord suitable for the AC receptacle in your area The AC line cord attached plug and receptacle must be marked with your country s certification mark and the cord must have a Harmonization HAR mark The line cord must be rated for either 100 to 120 VAC at 60 Hz or 220 to 240 VAC at 50 Hz The voltage rating will depend on the voltage in your area Contact your Casella CEL representative to obtain more information Calibration Gas Supplier The recommended span gas is isobutylene in air 100 ppm isobutylene in air may be obtained from Casella CEL The exact concentration will be determined by your application Other concentrations and other gases may be obtained from your local gas supplier If you c
73. s in units equivalent to ppm of isobutylene If isobutylene were the only photoionisable chemical in the sample then the VOC Pro would display its concentration directly The VOC Pro responds more or less readily to other chemicals than it does to isobutylene Because it has a medium sensitivity to isobutylene this gas has been chosen as a reliable means of reporting an average concentration of total ionisable compounds present Gases other than isobutylene can be used to calibrate the VOC Pro However all response factors are based on an isobutylene calibration Photoionisation Detector The VOC Pro s PID is shown in Figure 3 The PID measures the concentration of photoionisable chemicals in the gas stream from the sample inlet and produces an electrical signal for the microprocessor A UV lamp generates photons which ionise specific molecules in the gas stream The permanent air gases argon carbon dioxide nitrogen oxygen water vapour etc require a relatively high energy for ionisation and are not ionised by the UV photons Many of the compounds considered pollutants including most hydrocarbons are ionised The gas stream is directed into the PID through a small port at the center of the UV lamp window and through a series of larger ports around the perimeter of the lamp window This arrangement permits a high sample flow rate and short response time 21 VOC Pro User Manual Lamp Power Supply Sample Out Lampholder La
74. ted directly below the display Each key has varying functions for configuring the VOC Pro editing the data and controlling the display Since only three soft keys are available each function is broken down into a path A map showing each path and the resulting functions is shown in Figure 6 34 Using the VOC Pro Beginning Operation Turning the VOC Pro On 1 Turn the VOC Pro on by pressing the ON OFF key See Figure 1 for the location of the ON OFF key 2 The VOC Pro will display the instrument s software version number Next the VOC Pro will proceed to the mode display 3 The VOC Pro has an instant on lamp For maximum accuracy and stability allow the VOC Pro to warm up for 10 minutes prior to calibration Default Display The display shows the last mode in which the VOC Pro was used The resolution of the display changes with the magnitude of the reading A reading of 0 to 99 9 will be displayed with a resolution of 0 1 ppm A reading greater than 99 9 will be shown with a resolution of 1 ppm The meter will display concentrations up to 2000 ppm The VOC Pro can power up in Logging Off Tag or Interval mode depending on the mode that was set by the previous user The current mode 1s shown in the upper right hand corner of the display 35 VOC Pro User Manual O CHARGE CASELLA VOC Pro Figure 8 Tag Mode Display 36 Using the VOC Pro CHARGE CASELLA VOC Pro Figure 9 Interval Mode Display
75. ted once a second In the background the VOC Pro datalogger is sampling the concentration and measuring minimum maximum and average concentrations for the selected averaging interval At the end of every interval one entry is placed in the datalogger until the datalogger is full In order to reset the PEAK reading press the Clear key then select PEAK using the Down Arrow key then press Clear 43 VOC Pro User Manual Datalogger Interval Operation The microprocessor accumulates all readings in an averaging interval that you select and determines the minimum average and maximum readings It stores these numbers along with the highest priority instrument status and the most recent time and date These recorded data can now be reviewed and edited Recorded data can also be printed using the PC For each averaging interval the VOC Pro prints the minimum of all the minima the average of all the readings for the interval and the maximum of all the maxima In PEAK mode the reading is updated once a second In the background the VOC Pro datalogger is sampling the concentration and measuring min max and average concentrations for the selected averaging interval At the end of every interval one entry is placed in the datalogger until the datalogger is full In STEL mode 15 samples are combined to form a 15 minute average Once every minute the oldest of the 15 samples is replaced with a new one minute av
76. ty decrease The filter will not allow water to pass through but the filter will not stop all solvents NOTE Do not aspirate liquid samples with the VOC Pro Replace the filter on a weekly basis or more frequently if the VOC Pro is used in a dusty or wet environment You must replace the filter if the VOC Pro has been exposed to water If you are sampling hot gases or vapours condensation in the sample line may also affect the filter 87 VOC Pro User Manual Do not replace the inlet filter in a hazardous location WARNING To replace the inlet filter 1 Turn the instrument off Unscrew the filter housing from the detector housing Be careful not to lose the O ring seal 2 Remove the Teflon Polypropylene filter and install the new filter Part No G202030 Place the filter so that the Teflon side is facing down in the filter housing and the mesh side is facing the VOC Pro ALARM O O chance CASELLA VOC Pro Figure 14 Replacing the Inlet Filter 88 Routine Maintenance Handle the filter disk only by the edges The mesh may be damaged or contaminated by excessive handling Use forceps 1f possible 3 Replace the filter housing 4 Recalibrate and then continue normal operation 89 Troubleshooting 6 Troubleshooting General Information If you have a service related question about the VOC Pro consult this manual first If you cannot find the answer in this documentation contact Casella CEL
77. urn the pump on 1 Press the MENU soft key Unit Setup press SELECT Pump press SELECT On then press SELECT To turn the pump off 2 Press the MENU soft key Unit Setup press SELECT Pump press SELECT Off then press SELECT 49 VOC Pro User Manual Backlight The backlight function is used to switch the backlighting on and off when there is insufficient light to read the display To switch the backlighting on and off 1 Press the MENU soft key and select Unit Setup 2 Select BACKLIGHT and then press the SELECT soft key Press the DOWN ARROW soft key to either turn the backlight on or off 3 Press SELECT soft key to return to the main display To extend the operating life of the battery pack turn the backlighting off when it is not required User Mode User mode selects one of the three logging modes The three logging modes are Logging Off Tag and Interval mode Logging Off mode displays instantaneous readings only The display is updated continuously and readings are not datalogged Tag mode displays instantaneous readings The user has the option to manually store the instantaneous reading as either a data point without a tag a background reading or a sample reading Interval mode displays the instantaneous reading STEL TWA and PEAK readings In interval mode data is logged at a preset interval of 15 seconds 1 minute 2 minutes 5 minutes or 15 minutes sele
78. use methanol to clean the 11 7 eV lamp window WARNING 86 Using small circular motions rub the cleaning compound onto the lamp window Do not exert excessive force onto the window since the window can be permanently damaged by misuse Continue cleaning for approximately one minute Dampen a new cotton swab with methanol and remove any trace amounts of the cleaning compound from the lamp window Routine Maintenance 7 Wipe the window and the lamp with a dry lint free tissue to remove any trace amounts of the cleaning compound and methanol All traces of cleaning compound must be removed 8 Without touching the lamp window replace the lamp as outlined in Removing and Replacing the UV Lamp on page 83 Cleaning the Lithium Fluoride Window To clean the 11 7 eV lamp window 1 Clean the lamp window with dry aluminum oxide powder on a dry cotton swab Do not use methanol or water 2 Wipe the window and the lamp with a dry lint free tissue to remove any trace amounts of the cleaning compound and methanol All traces of cleaning compound must be removed 3 Thelamp window can also be regenerated by storing the lamp in a desiccant for at least 5 days NOTE You may not be able to fully clean the 11 7 eV lamp window Replacing the Sample Inlet Filter The VOC Pro is equipped with a combined dust and water filter to reduce detector contamination As the filter collects dust the VOC Pro s inlet flow rate and sensitivi
79. vapours being sampled and results from the UV light interacting with them Hot gases and vapours may contribute to a decrease in sensitivity because they may condense on the lamp window Condensation may eventually evapourate off the window but it will usually leave a residue that must be removed by cleaning the lamp window Since some UV inhibiting deposits are invisible to the eye regular cleaning of the lamp window is strongly recommended Clean the lamp frequently to prevent a heavy buildup of deposits that may be difficult to remove Do not remove the UV lamp in a hazardous location WARNING The UV lamp cleaning kit Part No G202025 includes aluminum oxide powder 3 0 micron powder and cotton swabs Additionally you will require approximately 10 mL of methanol When ordering methanol specify purge and trap grade The instructions provided below are for 10 6 eV lamps Refer to Cleaning the Lithium Fluoride Window for special instructions to clean the 11 7 eV lamp window 85 VOC Pro User Manual Never touch the UV lamp window with your fingers WARNING To clean the UV lamp 1 Remove the lamp as outlined in Removing and Replacing the UV Lamp on page 83 2 Allow the lamp to cool to room temperature to avoid thermal shock which could crack the window 3 Dampen a cotton swab in methanol and dab it into the cleaning compound Allow a small amount of the cleaning compound to adhere to the cotton tip Do not
80. way to unlock it without losing all your data log contents Date Format The Date Format function is used to select one of the two available date formats MM DD Y Y Y Y or DD MM Y Y Y Y Using the DOWN ARROW soft key to move the cursor to the date format you desire then press the SELECT soft key to select that format Language The Language function is used to select one of the available languages All messages and menus will be displayed in the language selected Using the DOWN ARROW soft key move the cursor to the language you desire then press the SELECT soft key to select that language 53 VOC Pro User Manual Response Factor Library The response of a PID to a compound is dependent on its ionisation potential In certain situations when the user is confident that only a single specific compound exists they can set up the VOC Pro using an isobutylene calibration to mimic the VOC Pro response as if the VOC Pro was calibrated using that specific single compound General Information In situations where only a single pure compound is present in air the VOC Pro should be calibrated with a standard of that specific compound as span gas The VOC Pro s 15 memory slots can be used to store calibration information for 15 different span gases The VOC Pro will always detect all ionisable compounds present in a sample regardless of the response factor RE selected NOTE Even if the VOC Pro has been calibrated with a specific co

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