Elcometer 331 Half-Cell Meter Model HM Operating Instructions
Contents
1. elcome ler 2 Connect lead from the charger into the socket marked Charger Input behind the interface access cover The Half Cell Meter will automatically switch off when the battery in the Half Cell Meter battery removed lead from the charger is connected 3 Plug the charger supplied into the mains supply The LED indicator on the charger will glow orange 4 Leave the gauge charging for at least 4 hours The LED indicator changes colour from orange to green when charging is complete 5 When charging is complete disconnect the charger from the mains supply before removing the lead from the Half Cell Meter To remove the battery pack for charging outside the Half Cell Meter unscrew the two battery pack retaining screws 3 at the rear of the Half Cell Meter and slide out the battery pack To charge the battery once it has been removed connect the lead from the charger into the socket on the battery pack Warning Do not allow metallic objects to come into contact with the battery terminals this may cause short circuit and result in permanent damage to the battery Warning Do not attempt to connect the supply side of the battery charger to generators or any other N medium to high power source other than the single phase 50 Hz AC mains outlet supplied from an approved and safe mains switchboard Connection to other supply sources such as generators or inverters may have2. Press Enter to toggle on or off Note Time and Stats cannot both be toggled to on at the same time 4 15 LOW LIMIT LOW LIMIT ON Press Enter to toggle on or off LOW LIMIT Use Scroll keys to adjust low limit and press Enter see Setting limits on page 27 4 16 HIGH LIMIT HIGH LIMIT ON Press Enter to toggle on or off HIGH LIMIT Use Scroll keys to adjust high limit and press Enter see Setting limits on page 27 22 4 17 SET DATE FORMAT DD MM YYYY Press Enter to toggle on or off MM DD YYYY Press Enter to toggle on or off 4 18 BAUD RATE Select using Scroll keys and press Enter to select 2400 Select using Scroll keys and press Enter to select 4900 iuris Select using Scroll keys and press Enter to select 9600 ep Select using Scroll keys and press Enter to select 14400 Select using Scroll keys and press Enter to select 19200 osx m Select using Scroll keys and press Enter to select 23 elcome ler 5 MEASURING HALF CELL POTENTIAL 5 1 BEFORE YOU START e Are you using the correct half cell probe See Half cell probes on page 56 e Do you want statistics See Statistics on page 29 e Do you want to save readings in memory See Batching Data logging on page 33 5 2 PROCEDURE 1 Locate the position of a reinforcing bar using a metal detector covermeter or similar instrument 2 E
3. sso 450 300 300 290 9 170 150 151 teo 167 157 165 134 196 300 200 16 tes 250 299 4300 208 400 zr 88 2 852 688 6 5 H 135 145 165 164 Printed on 16 10 2007 Elcomelor CoverMaster Software Wivw cicomelor com Sie Southern Shores Naval Yard 10 SW Wall 24 Engin Anthony 240 Customer Naval Department 14122005 122500 Note Corrosion Indicated 14 12 2005 12 25 00 Location Dry Dock 1 Grid Gell 504 Temperature 184 C 350 mV 250 mm Percont Above High Limit create your own reports Printed on 16 10 2007 Eicomeler CoverMaster Software wwe oleometor com Pago 1 55 elcometer 11 3 CONNECTING THE DATA TRANSFER CABLE 1 Plug the 9 pin female D type connector on one end of the data transfer cable into the COM port on the PC an RS232 to USB transfer cable is available which allows you to connect your Half Cell Meter to a USB port on your computer see Accessories on page 68 for ordering details 2 Plug the 5 pin connector on the other end of the data transfer cable into the RS232 connector at the rear of the Half Cell Meter located under the access cover see Computer interface on page 15 3 Switch on the Half Cell Meter and ensure that the Reading Screen is displayed 12 HALF CELL PROBES
4. wi kgs m a a me 40 i 20 Batch Name Example 2 Inspection Date 14 12 2005 12 25 00 Comments Corrosion Indicated Customer Name Naval Department T Measured Half Cell Potential in mV 2 o Temperature Southern Shores Location Cell Type Temperature 200 198 8s 200 210 180 190 200 196 156 194 180 110 100 112 156 160 0 150 145 110 104 150 2 350 240 245 so 260 198 195 150 320 125 ss 250 220 1so zo 165 120 170 200 260 ta 133 400 266 301 320 300 108 as 10 126 123 o 100 180 zs 5 46 130 120 2181 4 120 167 199 300 350 200 210 teo 15 142 138 120 140 14s 57 6 81 19 1381 Printed on 16 10 2007 Eleamelar 5 20 325 400 es 1 1so 46 180 155 153 150 183 res as 195 120 tes 200 400 355 20 450 450 345 320 280 185 158 172 48 135 63 167 127 1381 Use the CoverMaster Page Designer 7 025 162 190 o 400 400 400 490 210 e 1 12s 155 135 185 134 123 120 14 190 15410 390 450 360 496 o 25 300 220 17s 194 183 176 es reo 87 a5 135 200 150 157 aso aso
5. ERR RE ESERYTERE 2 2 OUICKSIAN darte Serb se tos cua x ss d xd 6 3 6 7 e duoc qun idera da peu dua 6 4 16 5 Measuring half cell potential 24 6 danh Rod due denos cux 27 7 C 29 8 Batning Dala OJN nere Hr e Rep Eg ab e at 33 9 A typical survey using grid batch memory 47 batches ba sae eke e ron Cr cog n nee 49 11 Transferring readings to a computer 53 12 probes ERRRCERRERETITROUTTO STET 56 13 Personalised welcome 58 14 Eno Messages eee eh Doa e ded dares 59 12 ae ae oad were aes ah eens a oe ee eas Sis are 59 16 meee ee 60 Male hut een te eee eee 60 9 ee ete be ee BEG 61 19 Related egumen dud epa oc dea arie den duke 62 u dE Rn 63 Thank you for your purchase of thi
6. Two types of half cell probe are available for your Half Cell Meter The probes can be easily identified by colour e Copper Copper Sulphate Cu CuSO Yellow e Silver Silver Chloride Ag AgCl Blue 12 1 WETTING YOUR PROBE For your probe to function properly the ceramic sensing end the electrode must be wet To get a good wet electrode just place the electrode in tap water for two to three minutes usually this will be sufficient to keep the sensor going all day Keeping the plastic end cap on the sensor when it is not being used will also help to keep the electrode wet During periods of extended storage place a small amount of water in the end cap before pushing the cap onto the probe 56 12 2 CARE OF YOUR PROBE AND CABLES The probes do not require any maintenance they do not need recharging and are sealed for life Any mud or grit should be removed from the electrode by swirling the electrode back and forth in a container of warm soapy water and then brushing with a wet rag The soapy water will not harm or contaminate the electrode Always check that the connecting cables are free of damage such as cuts and tears in the sheathing before use The Copper Copper Sulphate half cell probe is intentionally filled with a reserve of saturated Cupric Sulfate solution combined with solid Cupric Sulfate crystals to ensure a minimum 10 year design life Under certain circumstances a very small percentage of this reser
7. current language highlighted by the cursor 4 Release left hand softkey 5 Press tt or 2 to locate language required 6 Press lt to activate the selected language Alternatively select a language at any time MENU SETUP LANGUAGE 3 7 COMPUTER INTERFACE Your Half Cell Meter is fitted with an RS232 interface The interface is located under the interface access cover at the rear of the Half Cell Meter see page 7 This 5 pin RS232 interface is used with the data transfer cable to connect the Half Cell Meter to the RS232 port of a computer When the Half Cell Meter is connected to a computer you can e Download personalised screens to the Half Cell Meter see Personalised welcome screen page 58 e Transfer measurement data to a PC or printer see Transferring readings to a computer on page 53 3 8 USING THE EARPHONE To use the earphone plug the connector into the 3 5 mm socket marked on the front of the Half Cell Meter Replacement earphones are available as an optional accessory see Accessories on page 61 c RS232 to USB transfer cable is available which allows you to connect your Half Cell Meter to a USB port on your computer For ordering information see Accessories on page 61 15 4 THE MENUS The menus of your instrument are shown on the next page and a description of each menu item is given in the following paragraphs To access the menus press the MENU
8. Displays amount of free memory 96 gt see Batching Data logging on page 33 18 4 3 STATISTICS ENLARGE STATS Displays statistics in a larger font size CLEAR STATS Hesets to zero all statistical values SELECT STATS Opens Select stats See 4 9 SELECT STATS see Statistics on page 29 4 4 PRINT OUTPUT SINGLE BATCH Prints or outputs to PC a single memory batch ALL BATCHES Prints or outputs to PC all memory batches CURRENT STATISTICS Prints or outputs to PC the current statistics see Transferring readings to a computer on page 53 4 5 SETUP UNIES ai ti deh a tence Opens Units See 4 10 UNITS LIMITS etna PS Opens Limits menu See 4 11 LIMITS CLOCK Opens Clock See 4 12 CLOCK OUTPUT Opens Output see 4 13 OUTPUT DISPLAY Opens Display menu See 4 14 DISPLAY VOLUME Use Scroll keys to select beep volume 0 off to 5 maximum then press Enter LANGUAGE Use Scroll keys to select menu language and then press enter AUTO SWITCH OFF Use Scroll keys to select auto switch off time 5 to 10 mins off then press Enter OPENING SCREEN Press Enter to toggle the opening screen on or off LCD CONTRAST Use Scroll keys to select LCD contrast 0 to 8 and then press Enter 19 elcome le
9. an existing batch the instrument beeps and returns to the name edit ing screen 39 elcome ler 2 Press d to select the batch When the batch has been opened the display switches to the reading screen and then starts batching the BATCH softkey appears on the reading screen Readings in the existing batch can then be amended deleted and added 8 8 CLONE BATCH COPY BATCH INFORMATION Creates a clone a copy of an existing memory batch Cloning a batch allows the contents of an existing batch to be copied everything is copied except for the readings Cloning is typically used on site to create new batches without having to re enter batch header details such as the name of the site the engineer the customer etc When the new batch has been created by pressing the display switches to the reading screen and then starts batching the BATCH softkey appears on the reading screen 1 Use Left Right softkeys to scroll to the batch you want to clone 2 Press to select the batch 3 Adjust information in the header fields as required you must give the batch a name which does not already exist see How to enter information into batch header fields on page 45 4 Press 77 to create the clone 8 9 REVIEW BATCH Opens any existing memory batch for viewing of batch header information readings and statistics Also allows individual readings to be deleted 1 Use Left Right softkeys to scroll to the batch y
10. the recalculation takes place 41 elcometer 8 10 PLOT BATCH see Plotting batches on page 49 8 11 PLOT OPTIONS see Plotting batches on page 49 8 12 EDIT BATCH TAGS Same as Review batch but allows editing of some of the batch contents A moveable cursor is shown next to any entries which can be modified Pressing Enter opens that tag for editing 8 13 DELETE BATCH Deletes one memory batch 1 Use Left Right softkeys to scroll to the batch you want to delete 2 Press to delete batch The Half Cell Meter displays a confirmation screen 3 Press Yes to confirm deletion No to cancel 8 14 DELETE ALL BATCHES Deletes all batches from the Half Cell Meter and stops batching 1 The Half Cell Meter displays a confirmation screen 2 Press Yes to confirm deletion No to cancel 42 elcometer 8 15 FREE MEMORY Displays the amount of free memory and then returns to the reading screen after 2 seconds 8 16 THE BATCH SOFTKEY The BATCH softkey provides rapid access to the readings in a batch as you are taking them The BATCH softkey is only displayed on the reading screen when a batch is open Once the BATCH softkey has been pressed you can then e Scroll around the contents of a batch review delete and overwrite readings e Skip memory locations e then return to the reading screen ready to take more measurements in the same batch 43 Pressing BATCH di
11. to the maximum reading in the batch headings between the minimum and maximum are indicated by decreasing levels of grey GREYSCALE LIMITS e Black is set to the batch low limit e White is set to the batch high limit PLOT OPTIONS GREYSCALE MIN MAX GREYSCALE LIMITS THRESHOLD VIEW SET THRESHOLD e Readings between the low and high limits are indicated by decreasing levels of grey To set limits see Setting limits on page 27 If limits have not been set the minimum and maximum readings in the batch will be used and this option will show the same plot as Greyscale min max THRESHOLD VIEW A threshold value is set by the user All readings below the threshold are displayed as black all readings above the threshold are displayed as white 51 elcome ler SET THRESHOLD Set threshold values for half cell in mV as required L4 The thresholds are applied to all batches 2227 and are independent of any other limits mu which may be set 1 Light area v readings are above mB 3001 threshold value x1 2 Black area readings are below s threshold value Figure 9 Typical threshold plot 52 11 TRANSFERRING READINGS TO A COMPUTER Statistics and readings data can be transferred from the memory of your Half Cell Meter to a computer The data can then be used in reports analysed to produce graphs etc Connect your Half Cell Meter to a comp
12. 31 il Highest reading v x Mean Standard deviation XE ez IR Number and percentage of readings below the ee lower limit together with the limit value if any x f Number and percentage of readings within limits Y x y gt z mm Number and percentage of readings above the y o upper limit together with the limit value if any i Number and percentage of blank readings if any Y x y lt lt Number and percentage of under range readings if any Number and percentage of over range infinite i X o readings if any ES Notes Survey top only v The following additional symbols may be seen on the reading review screen The reading is under range not measurable 2 reading is less than the low limit 37 elcometer Entered by Symbol Symbol meanin Typical contents y y g yP User 331 1 The reading is greater than the high limit QO The reading is over range not measurable v Blank reading memory location is empty v 8 4 SAVING YOUR READINGS IN MEMORY To use the memory you will need to understand how to use the Data Logger 757 MENU DATA LOGGER To use a batch of memory it is first necessary to open create a batch see 8 6 below Once the batch has been opened you can then save your readings into that batch as you take them To save a reading when a batch is open press You may exit batching at any time once
13. 5 61 elcormetec K Keypad L Language selecting LCD contrast Limits Batch icons Linear batches Liquid Crystal Display Maintenance Maximum Minimum limits Memory Capacity Free Memory location Advancing Menu items ABOUT ALL BATCHES AUTO SWITCH OFF BACKLIGHT BATCH BAUD RATE CLEAR STATS CLOCK CLONE BATCH CONTACT CURRENT STATISTICS DATA LOGGER DELETE ALL BATCHES DELETE BATCH 62 11 14 13 27 28 33 59 60 27 33 43 26 20 53 12 14 43 23 53 31 21 40 60 53 18 38 42 42 DISPLAY ENLARGE STATS EXIT BATCHING FREE MEMORY HELP HIGH LIMIT LCD CONTRAST LIMITS LOW LIMIT MENU OPEN EXISTING BATCH OPEN NEW BATCH OUTPUT PLOT BATCH PLOT OPTIONS PRINT OUTPUT RESET REVIEW BATCH RS232 BIT IMAGE RS232 PLAIN TEXT SELECT STATS SETUP SHOW TIME SINGLE BATCH STATISTICS STATS ONLCD UNITS Menus O On off Open existing batch Open new batch Opening screen P PC Data transfer cable Plotting batches Greyscale Threshold Power on off Power supply Q Quick start R Reports S Saving your readings in memory Screen Welcome information Screen symbols Battery condition Software CoverMaster 61 49 51 51 12 54 38 13 13 54 Sound 26 Standards 4 Statistics Choice of de Clearing 31 Increasing size on display 31 Overview 29 Values calculated 29 Storage 59 Surveying large areas of concrete 34 Switching on off T Time and date 14 Tra
14. Cell Meter to a PC and download the batch using CoverMaster software see Transferring readings to a n computer on page 53 12 47 elcome ler 6 You can now produce an easy to read report which shows half cell potential over the survey area see example below Corer Master il Example Data Hebier Mesunements Popographic Topogephe Resdngkinew histogram My Reports Zoom Page with O m Example 2 inspection Date 14 02 2005 12 25 00 Co mmerlis Corrosion Indecated Cusborrser Harie Marval Department Measured Half Cell Potential in mW 48 10 PLOTTING BATCHES Your Half Cell Meter can plot on its display a of the readings in a batch Use this feature to locate potential trouble spots quickly and easily The map can be plotted in pseudo greyscale or in black and white Greyscale The lowest worst readings are displayed as dark regions on the map the highest readings as light regions 16 levels of greyscale indicate readings between these extremes Black and white A threshold value is set by the user All readings below the threshold are displayed as black all readings above the threshold are displayed as white In both instances blank and over range readings are shown as white and under range reading
15. Elcometer 331 Half Cell Meter Model HM Operating Instructions en elcomeler A The Elcometer 331 Half Cell Meter has been tested in accordance with EU regulations governing C Electro magnetic compliance and it meets the required directives Note Readings may be affected if the unit is operated within a radio frequency electromagnetic strength of greater than 3 V m Copyright Elcometer Limited 2008 2012 elcometer CoverMaster and are registered trademarks of Elcometer Limited Material Safety Data Sheets for the Elcometer 331 Half Cell Probes can be downloaded via our website Elcometer 331 Half Cell Probe Copper Copper Sulphate Cu CuS0 www elcometer com images MSDS elcometer 331 half cell copper pdf Elcometer 331 Half Cell Probe Silver Siliver Chloride Ag AgCl www elcometer com images MSDS elcometer 331 half cell silver pdf All other trademarks acknowledged All rights reserved No part of this Document may be reproduced transmitted transcribed stored in a retrieval system or otherwise or translated into any language in any form or by any means electronic mechanical magnetic optical manual or otherwise without the prior written permission of Elcometer Limited A copy of this Instruction Manual is available for download on our Website via www elcometer com Doc No TMA 0435 Issue 04 Text with Cover No 20589 elcometer 5 CONTENTS Section Page 1 About your Hall Gell Meter
16. S232 IMAGE M RS232 PLAIN TEXT O 5 DISPLAY INTL GAUGE SHOW TIME o USA GAUGE o STATS ON LCD o elcome ler 4 1 MENU DATA LOGGER Opens Data logger See 4 2 DATA LOGGER BACKLIGHT Toggles the display backlight on or off STATISTICS Opens Statistics See 4 3 STATISTICS PRINT OUTPUT Opens Print output menu See 4 4 PRINT OUTPUT SETUP Opens Setup See 4 5 SETUP ABOUT Opens About See 4 6 ABOUT an cme ented ats Opens Reset See 4 7 RESET Note When Backlight is on the display is lit for 30 seconds after any key press and during measurement 4 2 DATA LOGGER EXIT BATCHING Switches off data logger OPEN NEW BATCH Opens new memory batch and starts data logger OPEN EXISTING BATCHOpens existing memory batch and starts data logger CLONE BATCH Creates a clone of an existing memory batch and starts data logger REVIEW BATCH Opens an existing memory batch for viewing of readings PLOT BATCH Plots batch readings on the display PLOT OPTIONS Sets plot options See 4 8 PLOT OPTIONS EDIT BATCH TAGS Opens an existing memory batch for editing of tags DELETE BATCH Deletes one memory batch DELETE ALL BATCHES Deletes all memory batches FREE MEMORY
17. TW33119038 Earphone TW99912220 Data transfer cable Half Cell Meter to PC T99916217 RS232 to USB transfer cable 199916716 Half Cell probe Copper Copper Sulphate Cu CuSO4 TW33119668 1 O Operation outside these limits depends upon climatic conditions p Battery packs must be disposed of carefully to avoid environmental contamination Please consult your local environ mental authority for information on disposal in your region Do not dispose of the battery pack in a fire q 9 to 25 pin adapter may be required for certain PC RS232 ports 61 elcome ler Half Cell probe Silver Silver Chloride TW33119668 2 Half cell probe kit Copper Copper Sulphate Cu CuSO4 TW331CUKIT probe 2 x connecting cables 1 x 25 m cable reel carry case Half cell probe kit Silver Silver Chloride Ag AgCl TW331AGKIT probe 2 x connecting cables 1 x 25 m cable reel carry case Half cell probe cable reel extendable to 100 m with carry handle TW33119683 Calibration Certificates traceable to National Standards including UKAS and NIST are available at the time of order or alternatively the gauge must be returned to Elcometer for certification Calibration Certificates cannot be issued retrospectively 19 RELATED EQUIPMENT Elcometer produces a wide range of concrete and coatings inspection equipment Users of the Elcometer 331 Half Cell Meter may also benefit from the following Elcometer products e Elcometer 331 Concr
18. ake a direct connection to a reinforcing bar In this situation it is common practice to use two half cell probes connected to the inputs of the Half Cell Meter One probe is fixed in position on the concrete surface and the other probe is moved over the surface In this way the surface can be mapped Using this method the absolute value of the reinforcing bar to concrete half cell will not be measurable however changes from one point on the surface to the next can be measured and interpreted 6 SETTING LIMITS Low and High limits can be set by the user to monitor whether half cell potential is within specifications MENU SETUP LIMITS LOW LIMIT HIGH LIMIT LOW LIMIT ON HIGH LIMIT ON LOW LIMIT HIGH LIMIT Set the limit value and toggle the tick box to switch the limit on or off With limits switched on when you take a reading which is within the limits the Half Cell Meter will beep once When you take a reading which is outside the limits the Half Cell Meter will beep three times to warn you of an out of limit reading 27 elcometer When limits are switched on any readings taken which are outside a limit are indicated on the reading screen by arrow icon or 1671072007 1671072007 2264 90 Reading is less than lower limit Reading is greater than upper limit When batching is switched on and limits are switched on readings in a batch which are outside the limits are
19. al analysis If a batch is open the reading is saved into a memory location The Half Cell Meter will then advance scroll to the next memory location When the last memory location of a row in a grid is reached the Half Cell Meter will advance to the first memory location of the next row Figure 5 When the final memory location in a grid or linear batch is filled the Half Cell Meter closes the batch and exits batching Refer to The BATCH softkey on page 43 for information on how to navigate around a batch and review delete overwrite and skip memory locations while you are taking readings Half Cell Meter i beep CODE Single beep reading taken Double beep reading taken in last memory location ok of a row in a grid Triple beep reading taken in last memory location of the grid Triple beep higher pitch reading taken is outside limits if limits h b MENU SETUP es imits have been set 47 Figure 5 Beeps and scrolling 6x3 grid batch A A ae ae x xxx C KKK Typically a low limit will be applied at the threshold that would indicate corrosion e g 350 mV Any readings lower more negative than this would then cause an alarm and be tagged as below limit in the statistics and or the batch 5 4 MEASURING CELL TO CELL RATHER THAN CELL TO BAR In some instances it will not be possible to m
20. ar calibration checks over the life of the Half Cell Meter are a requirement of quality management procedures e g ISO 9000 and other similar standards For checks and certification contact Elcometer or your Elcometer supplier The Half Cell Meter does not contain any user serviceable components In the unlikely event of a fault the Half Cell Meter should be returned to your Elcometer supplier or directly to Elcometer The warranty will be invalidated if the gauge has been opened Contact details can be found e Stored in the Half Cell Meter MENU ABOUT CONTACT e On the outside cover of these operating instructions e At www elcometer com 17 TECHNICAL DATA Range 999 mV to 999 mV Accuracy 5 mV Half cell probe stability 10 mV with 3 A load Weight 1 6 kg 3 5 Ib Dimensions 230 mm x 130 mm x 125 mm 9 x 5 1 x 4 9 Operating temperature 0 C to 50 32 F to 120 F 60 High impact ABS Power supply Internal rechargeable Lithium lon batteryP Fuse rating of charger 3A Battery life Up to 48 hours continuous use without backlight Up to 20 hours with backlight 18 ACCESSORIES Your Half Cell Meter is complete with all the items required to get started The following optional accessories are available from Elcometer or your Elcometer supplier To place an order please quote the sales part number which follows the description of each accessory Rechargeable battery pack
21. e Half Cell Meter includes an automatic switch off feature which will help to extend the battery life time between charges The automatic switch off time can be set to OFF 5 6 7 8 9 or 10 minutes SN MENU SETUP AUTO SWITCH OFF A countdown timer is displayed on the screen 60 seconds before the Half Cell Meter switches off automatically The timer counts down from 60 to 0 to warn you that the Half Cell Meter is about to switch off Press any key while the countdown timer is displayed to cancel automatic switch off 3 5 THE DISPLAY Take some time to familiarise yourself with the information shown on the display of your Half Cell Meter The display shows e Welcome information e Measurement information e Menus to configure the Half Cell Meter and control functions e Help and miscellaneous information 12 When the Half Cell Meter is switched on an opening welcome information screen may be displayed briefly before the main reading screen appears The information shown depends upon whether you are taking measurements reviewing readings or setting up the Half Cell Meter The main screen displayed while you are taking measurements is the Reading Screen READING SCREEN 229 4 1 Half cell potential bar graph zero at centre 2 Half cell potential numerical SYMBOLS A wide range of symbols is used on the display The 2570 meaning of all these symbols is stored in the Half Cell Mete
22. ed over and left blank When you are ready to return to the reading screen press 47 8 17 HOW TO ENTER INFORMATION INTO BATCH HEADER FIELDS You can enter information into the header fields when you first open create a new batch or clone a batch and when editing batch tags There are two methods of entering information into the header fields of a batch e use the keypad on the Half Cell Meter or e use a computer and then transfer the information to the Half Cell Meter using CoverMaster software see CoverMaster software on page 54 Which method you use depends upon your circumstances Typically on a large measuring project the best method is to design batches on your computer and then transfer the information to the Half Cell Meter The keypad can be used on site for minor changes and the addition of notes etc during cloning or editing of a batch ENTERING INFORMATION USING THE KEYPAD Text and numbers can be entered into header fields using the Half Cell Meter keypad The function of the keys is shown below 45 elcome ler 1 Scrolls up through alohanumeric characters elcometer 2 Scrolls down through alphanumeric characters 2 3 3 Moves cursor left Hold down to 15 16 delete a character 2 i3 o 4 Select character set abc 123 etc 9 9 5 Moves cursor right Hold down to insert a character p 6 Enters text into header field Press Y
23. ension cable on spool e 1 7mred rebar cable with connecting clip e 1 7 m black half cell connecting cable e Earphone e Shoulder strap containing CoverMaster software Data transfer cable e Plastic carrying case Operating instructions Note Half Cell probes are not supplied with the main instrument and have to be ordered separately see Accessories on page 61 elcometer elcometer MEM i Figure 1 Elcometer 331 Half Cell Meter 1 4 CONVENTIONS IN THESE INSTRUCTIONS A simple menu structure helps you get the most from your Half Cell Meter see The menus on page 16 There are many references to this menu structure in these instructions As an example the LANGUAGE option which is in SETUP from the MAIN MENU would be shown in these instructions as MENU SETUP LANGUAGE elcome ler 2 QUICK START Note Before switching the Half Cell Meter on for the first time read Selecting a language on page 14 To configure the Half Cell Meter quickly and start taking readings 1 Charge the batteries see page 7 2 Fit half cell probe and cables see page 10 3 Switch on see page 12 4 Select language see page 14 5 Take readings of half cell potential see page 24 6 use memory see page 33 For an overview of your Half Cell Meter menus and functions see pages 16 to 23 3 GETTING STARTED This section of the instructions is intended for first time users of the Half Cell Meter It contains essentia
24. es to confirm or No to continue editing To delete an alphanumeric character press and hold key 3 To insert an alphanumeric character press and hold key 5 The screen displays the number of spare characters remaining in the field and the maximum total number of characters allowed j following symbols are not permitted in the Batch Name field because they are illegal in Windows filenames lt gt They may be used in the other alphanumeric fields 46 The text fields can entered displayed using up to 256 different character codes These include European accented characters and a few additional accented vowels used in the Chinese phonetic Pinyin system When the Japanese language is selected the European characters codes are substituted to represent the phonetic Katakana symbols which are shown at double height 9 A TYPICAL SURVEY USING GRID BATCH MEMORY This section leads you step by step through taking measurements saving half cell readings in batches and producing a report 1 Mark out your survey area in this example a 14 x 14 grid ABCDEFGHIJKLMN 2 Fit the half cell probe and cables and then switch on the instrument 3 Create a 14 x 14 grid batch 4 4 Measure the half cell potential over the entire survey area and record the measurements in the batch created in step 3 press 7 8 Enter lt to store a reading the batch 5 Connect your Half
25. ete Covermeter e Elcometer Adhesion and Bond Strength Testers e Elcometer Concrete Crack Microscopes e Elcometer Concrete Moisture Meters Elcometer Concrete Test Hammers For further information contact Elcometer your Elcometer supplier or visit www elcometer com 62 1 INDEX A Accessories Backlight BATCH Batch Cloning Copying Deleting all Deleting one Opening existing Opening new Recalculation Batches Grid Linear What they contain Batching Exiting Batteries Charging Life of 61 14 43 40 42 42 39 41 34 33 33 39 61 Battery condition indicator Battery pack Baud rate Beeping C Calibration Calibration certificates Charger Charging the batteries Cloning a batch Computer Connection cable Computer transferring data to Copying a batch CoverMaster software D Data logging Data transfer cable Delete batch Deleting all batches Dimensions E Earphone Elcometer 331 Features Overview 9 6 53 26 60 62 7 7 40 61 53 40 54 33 56 61 42 42 60 15 Entering information Error messages Exit batching F Features Free memory G Grey Scale Levels Grid batches H Half cell Taking a measurement Half cell probes Care of Fitting to gauge Spares Storage and Shelf life Wetting Header fields Entering information Interface Access cover RS232 45 59 39 49 34 24 56 57 10 62 57 56 45 15 1
26. ful but easy to use software which simplifies setting up and using your Half Cell Meter Design batch templates on your PC and download these to your Elcometer 331 Half Cell Meter ready for use on Batch templates site e Download half cell readings data from your Half Cell Meter to the CoverMaster data management system Keep your survey notes inspection reports photographs and all your other inspection information in one place CoverMaster9 Create accurate and professional reports configured to Batch readings allow your data to be understood easily at all levels e Create PDF versions of your reports and e mail direct from CoverMaster For complete instructions on how to install and use CoverMaster software please refer to the instructions supplied with the software n When RS232 Plain Text is selected the following languages will be output as English Chinese Japanese 54 elcome ler chasida m E Shape 7 WAT o m Batch Name 2 Inspection Date 14 12 2005 12 25 00 Comments Corrosion indicated Customer Name Naval Department Measured Half Cell Potential in mV Batch Name Example 2 Inspection Date 14 12 2005 12 25 00 Comment Corrosion Indicated Customer Name Naval Department Measured Half Cell Poten m m m m
27. l information about batteries assembling the Half Cell Meter the controls and the display At the end of this section you will be ready to take readings 3 1 THE POWER SUPPLY Your Half Cell Meter is powered by a rechargeable Lithium lon battery pack which can be charged inside or outside the Half Cell Meter a The Half Cell Meter is not designed to operate using dry cell batteries 6 One battery pack is supplied with the Half Cell Meter To increase productivity on site Elcometer recommends that you purchase a spare battery pack which can be charged while you are using your Half Cell Meter To order an additional battery pack see Accessories on page 61 contact Elcometer or your local Elcometer supplier CHARGING THE BATTERIES The rechargeable battery must be fully charged before using the Half Cell Meter for the first time Use only the charger supplied with your Half Cell Meter to charge the battery Use of any other type of charger is a potential hazard may damage your Half Cell Meter and will invalidate the warranty Do not attempt to charge any other batteries with the supplied charger Always charge the battery indoors To prevent overheating ensure that the charger is not covered 1 Unscrew the retaining screw 1 and open the interface access cover 2 on the rear of Half Cell Meter protovale 331 Li lon d 4Ah L A o
28. load Elcometer Welcome Screen Wizard software This software is available free of charge from the downloads section of the Elcometer website www elcometer com Connect Half Cell Meter to PC using Data Transfer Cable Switch on the Half Cell Meter Ensure that the reading screen is displayed Run Welcome Screen Wizard software and follow the on screen instructions M duoc me 13 2 DELETING THE SCREEN 1 Run the Welcome Screen Wizard software 58 elcometer Click Next Select Create a new screen setup Click Next Select Disabled Click Next Follow the remaining on screen instructions to delete the welcome screen got OL oe 14 ERROR MESSAGES Under certain conditions the Half Cell Meter will display error messages These messages are normally cleared by pressing any one of the softkeys The cause of the error will be indicated by the message and should be corrected before proceeding If any error persists contact Elcometer or your Elcometer Supplier 15 STORAGE This Half Cell Meter incorporates a Liquid Crystal Display LCD If the display is heated above 50 120 F it may be damaged This can happen if the Half Cell Meter is left in car parked in strong sunlight Always store the Half Cell Meter in its case when it is not being used 59 elcome ler 16 MAINTENANCE You own one of the finest Half Cell Meters in the world If looked after it will last a lifetime Regul
29. lows the user to choose which statistics values are displayed on the reading screen during measurement Use tt and 2 to move the cursor and press lt to select deselect the statistics values Only two statistics values can be selected and displayed on the reading screen at the same time To view all statistics values choose MENU STATISTICS ENLARGE STATS ALL V gt MENU SETUP DISPLAY SHOW TIME SELECT STATS NO OF READINGS MEAN STD DEVIATION COEF OF VARIAT N LOWEST READING HIGHEST READING UNDER RANGE BELOW LIMIT ABOVE LIMIT OVER RANGE BLANK 0 Opening a new or existing batch will also cause all current statistical values to be reset to zero 32 8 BATCHING DATA LOGGING Your Half Cell Meter includes internal memory which can be used to save half cell readings Use this memory to save your readings as you take them this will help to increase your productivity on site and reduce the need to rely on paper and pen to record your results All readings saved into the memory of your Half Cell Meter are stored in batches Typically a single batch is used to store readings from a particular area or location on a site There two types of batch linear and grid The User must define whether a batch is to be in linear or grid HH format when the batch is first opened created 8 1 LINEAR BATCHES A linear batch of memor
30. marked as follows e Down arrow icon if the reading is below the low limit e Up arrow icon if the reading is above the high limit 28 elcorneterc 7 STATISTICS Your Half Cell Meter has a Statistics feature which calculates and displays a statistical analysis of readings as they are taken Statistics values are also calculated for the readings within a batch and these values are stored in the batch To enter a reading into the statistical analysis while you are taking measurements press Table 1 Calculated statistics values Number of Readge running value for the number of readings taken group The average of a group of readings the sum of the individual readings X divided by the number of readings e statistical measure of the spread of values in a group of readings Deviation Coefficient The standard deviation divided by the mean for a group of readings Variatio expressed as a percentage Lowest MI een value of the lowest reading taken in a group ull 29 elcometer K vo lt is d o Table 1 Calculated statistics values Under range The number and percentage of readings under range Low limit The number and percentage of readings below the low limit Within limits number and percentage of readings within limits High limit The number and percentage of readings above the high limit Overrange The number and percentage of readings
31. nsferring data to computer 53 54 W Weight 60 Welcome screen 58 Z Zoom 50 63
32. on 8 3 WHAT DOES A BATCH CONTAIN Each batch stores three types of information e header fields information entered by the user see below Create grid batch on your Half Cell Meter and store half cell potential measurements for each e readings entered automatically by the 331 as you are taking measurements e Statistics entered automatically by the 331 as you are taking measurements Entered by Symbol Symbol i Typical tent ymbo ymbol meaning ypical contents User 331 001 1 Survey 01 v HH Batch format or HH 10 only displayed for nx Number of columns nx batches 10 only displayed for ny v Number of rows ny FH batches n Number of readings taken n 96 v Site Humber Bridge v 35 elcome ler Symbol Symbol meaning Typical contents sl M Location North Pier v Area AA 123 4 001 v H Grid spacing size of each grid square 500 mm v xe Batch creation date time 09 30 17 01 06 Batch update date time 14 15 19 01 06 v Low limit 20 mm v 1 High limit 35 mm v l Half cell type 2 v Temperature 20 v Engineer M Smith Y a Customer Highways Department v MIT Lowest reading v 36 elcometer Symbol Symbol meanin Typical contents d d 7 NE User 3
33. ou want to review 2 Press to select batch 40 3 Review readings using the scroll keys to move around the contents of a batch Press and hold the Shift softkey 457 and then press any of the Scroll keys to jump quickly to the start or end of line of readings Press lt to toggle between e REVIEW BATCH shows header fields and statistics and half cell readings To delete a reading press the Delete softkey 4 Press menu esc once to select another batch using press menu esc again to return to the Data Logger menu As you scroll between batches using the Left Right softkeys the same page of information is shown for each batch This feature makes it particularly easy to identify for example batches from a particular customer location or batches with readings outside limits A bracketed asterisk next to the batch name indicates that this is the batch currently open if any A complete list of the information given on a review batch screen is given in What does a batch contain on page 35 i When readings are removed either over written or deleted from a very large batch some statistics values may be replaced by a until the batch is recalculated To force a batch to be recalculated batching MENU DATA LOG GER EXIT BATCHING and then re open the batch MENU DATA LOGGER OPEN EXISTING BATCH Invalid statistics PLEASE WAIT will be shown on the display while
34. over range or infinite Blank readings Number and percentage of blank readings skipped not recorded deleted Over range under range and blank readings are not included in the calculation of mean standard deviation coefficient of variation lowest reading and highest reading neither are they counted in number of readings taken 30 To access statistics open the Statistics menu MENU STATISTICS 7 1 VIEWING STATISTICS Statistics values can be viewed in a number of ways e As you are taking measurements any two of the statistics values in Table 1 on page 29 can be displayed on the reading screen MENU SETUP DISPLAY STATS ON LCD STATISTICS ENLARGE STATS CLEAR STATS SELECT STATS e At any point while taking measurements any two or all of the statistics values can be displayed in enlarged format MENU STATISTICS ENLARGE STATS e When a batch has been created statistics values for the batch can be displayed on the reading review screen MENU DATA LOGGER REVIEW BATCH 7 2 ENLARGE STATS Displays the chosen statistical values as double height characters Press ALL and use 1 and 3 to view all statistical values Press menu esc to return to the Reading Screen 7 3 CLEAR STATS Resets to zero all statistical values Press YES to confirm or NO to cancel Clear stats is not available while a batch is open 31 olcorneier 7 4 SELECT STATS Al
35. r MENU ABOUT HELP LCD CONTRAST Adjust the contrast of the display to suit lighting conditions MENU SETUP LCD CONTRAST b The opening welcome screen can be disabled MENU SETUP OPENING SCREEN Customised welcome screens can be created on a PC and downloaded into the gauge see Personalised welcome screen on page 58 13 elcometer BACKLIGHT The display includes a backlight which illuminates the display for 10 seconds after any key is pressed and during measurements Switch the backlight on or off as required Switching the backlight off will increase battery life MENU BACKLIGHT TIME AND DATE The time and date can be displayed on the top line of the reading screen MENU SETUP DISPLAY SHOW TIME 3 6 SELECTING A LANGUAGE Your Half Cell Meter has a number of built in languages When the Half Cell Meter is switched on for the first time after dispatch from the Elcometer factory the display will show the language selection screen Figure 3 AT FIRST SWITCH ON 1 Press 7 or 2 to locate language required 2 Press lt to activate the selected language The Half Cell Meter operates in the new language until changed AT ANY TIME 1 Switch the Half Cell Meter off 2 Press and hold left hand softkey Press to switch on Half Cell Meter 14 Figure 3 Language selection screen The display will show the language selection screen with
36. r 4 6 ABOUT GAUGE INFORMATION Press Enter to display technical information about the Half Cell Meter CONTACT Press Enter to display Elcometer offices worldwide and if programmed Supplier contact details HELL dao Press Enter to display an explanation of all the symbols used on the display 4 7 RESET INTL GAUGE Press Enter to Reset Half Cell Meter to International settings DD MM YYYY date format metric units etc USA GAUGE Press Enter to Reset Half Cell Meter to USA settings MM DD YYYY date format imperial units etc Note The Half Cell Meter will display a Yes No confirmation screen before reset is activated 4 8 PLOT OPTIONS GREYSCALE MIN MAX Sets plot greyscale between the minimum and maximum readings in the batch GREYSCALE LIMITS Sets plot greyscale between the minimum and maximum limits in the batch THRESHOLD VIEW Sets plot to white or black below an adjustable threshold SET THRESHOLD Press Enter use Scroll keys to adjust value and then press Enter see Plot options on page 51 d International settings can also be activated at switch on Press and hold third softkey m m m and switch on gauge e USA settings can also be activated at switch on Press and hold fourth softkey m m and switch on gauge 20 4 9 SELECT STATS NO OF READINGS Press Enter to toggle on or off Press Enter to toggle on or off STD DEVIATION Press Ente
37. r to toggle on or off COEF OF Press Enter to toggle on or off LOWEST READING Press Enter to toggle on or off HIGHEST READING Press Enter to toggle on or off elcometer UNDER RANGE Press Enter to toggle on or off BELOW LIMIT Press Enter to toggle on or off ABOVE LIMIT Press Enter to toggle on or off OVER RANGE Press Enter to toggle on or off BLANK Press Enter to toggle on or off Note Only two statistics from the above list can be toggled to on at the same time 4 10 UNITS CELCIUS Press Enter to toggle on or off FAHRENHEIT Press Enter to toggle on or off 4 11 LIMITS LOW LIMIT Opens Low limit menu See 4 15 LOW LIMIT HIGH LIMIT Opens High limit menu See 4 16 HIGH LIMIT 4 12 CLOCK TIME DATE Use Scroll keys and Left Right softkeys to set time and date then press Enter 21 elcome ler SET DATE FORMAT Opens Set date format menu See 4 17 SET DATE FORMAT 4 13 OUTPUT BAUD RATE Opens Baud rate menu See 4 18 BAUD RATE RS232 BIT IMAGE Press Enter to toggle on or off RS232 PLAIN TEXT Press Enter to toggle on or off Note RS232 Bit Image and RS232 Plain Text cannot be toggled to on at the same time gt see Transferring readings to a computer on page 53 4 14 DISPLAY SHOW Press Enter to toggle on or off STATS ON LCD
38. s Elcometer 331 Meter Welcome to Elcometer Elcometer are world leaders in the design manufacture and supply of inspection equipment for concrete and coatings Our concrete inspection products include a comprehensive range of concrete and civil engineering inspection equipment Our coatings products cover all aspects of coating inspection from development through application to post application inspection The Elcometer 331 Half Cell Meter is a world beating product With the purchase of this Half Cell Meter you now have access to the worldwide service and support network of Elcometer For more information visit our website at www elcometer com 1 ABOUT YOUR HALF CELL METER The Elcometer 331 Half Cell Meter is a portable Half Cell Meter for fast and accurate assessment of the potential for corrosion of concrete reinforcement bars Your Half Cell Meter measures half cell potential an electrochemical technique commonly used to assess the potential for corrosion in reinforced concrete structures The instrument acts as a voltmeter which measures the potential difference between the steel reinforcement in the concrete structure and a reference electrode the half cell placed on the surface of the concrete The Half Cell Meter is available in two versions e Model H entry level e Model with data logging This manual describes the operation of the Elcometer 331 Half Cell Meter Model HM Both versions of the instrument fea
39. s are shown as black To select greyscale or black and white see Plot options on page 51 49 elcometer 10 1 PLOT BATCH MENU DATA LOGGER PLOT BATCH Light area v D Dark area potential trouble spot Cursor position 2 Cursor scroll left Shift scroll 9 Zoom 0 5 1x 2x 4x Cursor scroll right Zoom level 9 Upper limit 10 Lower limit Threshold 4 8 D 11 Units 12 Voltage Figure 8 Typical greyscale plot CON OOF WD 13 Batch memory location Use the arrows to scroll the cursor around the plot as the cursor moves the current memory location and reading are shown at the top right of the display Large batches will scroll when the cursor reaches the edge of the display To scroll up or down use the up and down 3 keys Press with cursor scroll keys to jump to end or start of row column m When a batch is first plotted the initial zoom is set automatically to the highest level that allows the whole batch to be seen or to x0 5 if the batch does not fit on the display at minimum zoom 50 Use the Zoom softkey to zoom in to areas of interest Press lt at any time to view a key of the greyscale levels 10 2 PLOT OPTIONS Use this menu to select how readings will be displayed on the plot MENU DATA LOGGER PLOT OPTIONS GREYSCALE MIN MAX e Black is set to the minimum reading in the batch e White is set
40. softkey To return to the reading screen quickly press and hold the MENU softkey 16 DATA LOGGER PLOT OPTIONS MENU DATA LOGGER BACKLIGHT STATISTICS PRINT OUTPUT SETUP ABOUT RESET elcometer LOW LIMIT LOW LIMIT ON LOW LIMIT 50mV HIGH LIMIT HIGH LIMIT ON HIGH LIMIT 800 SET DATE FORMAT DD MM YYYY M MM DD YYYY BAUD RATE 1200 2400 o 4800 9600 M 14400 L1 19200 EXIT BATCHING GREYSCALE MIN MAX O OFEN NEN BATCH GREYSCALE LIMITS O OPEN EXISTING BATCH PER ri CENE BATCH SET THRESHOLD REVIEW BATCH PLOT BATCH PLOT OPTIONS SELECT STATS EDIT BATCH TAGS NO OF READINGS o DELETE BATCH MEAN o DELETE ALL BATCHES SID DEVIATION PREE NESE COEF OF VARIAT N LOWEST READING m 7 HIGHEST READING CLEAR STATS UNDER RANGE SELECT STATS e BELOW LIMIT Ll ABOVE LIMIT PRINT OUTPUT OVER RANGE SINGLE BATCH ALL BATCHES CURRENT STATISTICS UNITS CELCIUS SETUP FAHRENHEIT o UNITS e LIMITS LIMITS CLOCK e LOW LIMIT e OUTPUT e HIGH LIMIT e DISPLAY e BEEP VOLUME 3 LANGUAGE CLOCK AUTO SWITCH OFF 5 TIME DATE OPENING SCREEN SET DATE FORMAT e LCD CONTRAST OUTPUT ABOUT BAUD RATE 9600 R
41. splays the Reading Review Screen REVIEW readings using the scroll keys to move around the contents of a batch Press and hold the Shift softkey 454b and then press any of the Scroll keys to jump quickly to the start or end of a line of readings When you have finished reviewing press lt to return to the reading screen at the current memory location or press menu esc to return to the reading screen at the original memory location DELETE readings by pressing the Delete softkey Press Yes to confirm deletion or No to cancel When you have finished deleting press lt to return to the reading screen at the current memory location or press menu esc to return to the reading screen at the original memory location You can OVERWRITE any of the readings 1 Use the scroll keys to move to the reading you want to overwrite 2 Press The display switches to the reading screen 3 Take a new measurement and press 7 to enter reading 4 Press Yes to confirm overwrite or No to cancel 44 uy 1 2 3 Figure 6 Reading review screen grid batch 1 c ET Figure 7 Reading review screen linear batch SKIP OVER memory locations in a grid batch using scroll keys to move around the contents of the batch This facility is useful when surveying in a grid around obstructions The memory locations in the vicinity of the obstructions can be skipp
42. the potential to damage the charger the battery and or the gauge invalidating warranty BATTERY CONDITION INDICATOR The state of charge of the battery is shown by a symbol on the display B full charge 1 low charge flashing every 10 seconds charging required When the battery is completely exhausted the instrument will emit 5 loud beeps and then switch off elcometer 3 2 FITTING HALF CELL PROBES Connect the probe and cables as shown Black cable Red cable 10 elcometer 3 3 THE CONTROLS All functions of the Half Cell Meter can be controlled using the keypad There are two types of keys on the keypad fixed function keys and soft keys Figure 2 Switches the Scrolls up down Half Cell Meter through menus falcometec E on or off and lists of values Increases decreases Selects menu alphanumeric items values Toggles tick boxes on off Menu Confirms values display Accesses menus lt 4 Adds reading to Escapes from statistical menus analysis Discards values The function of these soft keys pend reading to entered on varies and is defined by symbols batch if batch is display and text on the screen open Figure 2 Half Cell Meter keypad 11 olcorneier 3 4 SWITCHING THE HALF CELL METER ON AND OFF To switch the Half Cell Meter on press C To switch the Half Cell Meter off press and hold for two seconds Th
43. ture an easy to use menu driven graphical interface which guides the user during setup and measurement A range of half cell probes is available to suit your requirements 2 This instrument is packed in cardboard and plastic packaging Please ensure that this packaging is disposed of in an environmentally sensitive manner Consult your Local Environmental Authority for further guidance To maximise the benefits of your new Elcometer 331 Half Cell Meter please take some time to read these Operating Instructions Do not hesitate to contact Elcometer or your Elcometer supplier if you have any questions 1 1 FEATURES Elcometer 331 Model Feature Page Menu driven backlit graphical user interface 12 Weather proof to IP65 Multiple languages 14 Memory multiple linear and grid batches up to 240 000 readings 33 Text fields for input of user data in each batch 35 Date and time stamping 35 Statistical analysis of readings and batches 29 Alarm if reading is outside limits 27 Transfer readings and statistics to a computer 53 CoverMaster software for batch setup data transfer and reporting 54 elcormetec 1 2 STANDARDS The Elcometer 331 Half Cell Meter can be used in accordance with the following National and International Standards ASTM C876 DGZfP B3 TR60 UNI 10174 1 3 WHAT THIS BOX CONTAINS e Elcometer 331 Model Half Cell Meter e Rechargeable battery pack and battery charger UK EUR 8 US e 25m ext
44. uter using the cable supplied see Connecting the data transfer cable on page 56 There are two methods of transferring statistics and readings e Print output CoverMaster software to store analyse and report 11 1 PRINT OUTPUT Use the PRINT OUTPUT function of the Half Cell Meter to output data over the RS232 interface direct to a printer or to communications software such as Hyperterminal Choose between outputting a single batch all batches or just the current statistics MENU PRINT OUTPUT SINGLE BATCH MENU PRINT OUTPUT ALL BATCHES MENU PRINT OUTPUT CURRENT STATISTICS Note Before you use PRINT OUTPUT you must first select the correct output baud rate and output format MENU SETUP OUTPUT Baud Rate This can be set at values from 1200 to 19200 The default value is 9600 baud RS232 Bit Image Toggle tick box to activate deactivate All images and characters are output as bit maps This allows printing on the Elcometer Miniprinter see Accessories on page 61 53 eicometerc RS232 Plain Text Toggle tick box to activate deactivate The Half Cell Meter sends standard ASCII characters from the Courier New font set This allows printing on RS232 printers and data transfer to a PC using software such as HyperTerminal 11 2 COVERMASTER SOFTWARE CoverMaster software supplied on the CD enclosed with the gauge is designed specifically for your Half Cell Meter CoverMaster is power
45. ve can leach out from the ceramic sensing tip of the half cell producing crystals as shown in the photograph This does not affect the performance of the cell The crystals should be removed by washing in distilled water 12 3 TEMPERATURE Do not allow the probe to freeze Although freezing will not damage your probe it will be impossible to obtain reliable measurements while in this state All measurements are affected by temperature if you take two readings in identical conditions one in the summer at 29 C 85 F and the other in the winter at 1 34 F the half cell potential readings will be different Each probe is tested at 25 C to be within 10 mV of a standard Calomel reference cell The following values relative to a standard Calomel cell are used as the test limits during manufacture 57 elcometer Lower limit Reference value for Calomel Upper limit Copper Copper Sulphate Cu CuSO 50 mV 60 mV 70 mV Silver Silver Chloride Ag AgCl 50 mV 40 mV 30 mV 12 4 SHELF LIFE Your probe does not degrade when stored 13 PERSONALISED WELCOME SCREEN A personalised welcome screen can be designed on a computer and then downloaded into the Half Cell Meter Screen dimensions are 128 pixels x 64 pixels The welcome screen is typically used to personalise the Half Cell Meter with a logo serial number user name etc This is the first screen displayed when the Half Cell Meter is switched on 13 1 CREATING THE SCREEN 1 Down
46. xpose the bar e g by drilling through the cover using a large drill 3 Drill a small diameter hole into the bar suitable for attachment of the positive red cable using a screw or lead plug 4 Mark out a grid on the concrete Measurements will be taken at the intersection points of the grid Typical grid spacing is 1 m x 1 m however this may be reduced if localised corrosion is suspected If the measured half cell potential between two adjacent positions differs by more than 100 mV it is recommended that the grid spacing is reduced 5 f necessary use tap water to wet the whole of the test area or just the measurement positions 6 Connect the red cable and extension reel between the exposed reinforcing bar and the red terminal on the Half Cell Meter Figure 4 Connect the black cable between the probe and the black terminal on the Half Cell Meter 24 f 10 11 Switch on the Cell Meter Remove the end cap from the probe and store the cap safely Press the electrode against the concrete surface View the reading of half cell potential on the display If you are satisfied with the reading either move on to the next measurement location or press Enter 4 Figure 4 Typical instrument configuration for half cell measurements 25 elcome ler 5 3 WHAT HAPPENS WHEN YOU PRESS ENTER 4 1 2 3 26 The half cell potential reading is entered into the current statistic
47. y locations is similar to a single row or column of cells on a spreadsheet 30 33 29 28 35 30 30 27 28 31 33 Maximum number of readings in a linear batch 1000 Maximum number of linear batches 200 33 8 2 GRID BATCHES Grid batches are typically used when you are surveying large areas of concrete A grid batch of memory locations is similar to the grid of cells marked out by the rows and columns of a spreadsheet F J 1 30 33 30 27 28 31 33 35 32 30 30 2 29 27 28 31 33 35 32 30 30 27 28 3 30 27 28 31 33 35 32 28 30 27 28 4 3527 28 31 33 35 32 30 29 27 28 5 Maximum size of a grid batch 255 rows x 255 columns Maximum number of grid batches 1000 Maximum total number of readings 240 000 Memory locations in a grid batch are referred to by their column letter and row number for instance A1 F4 etc Grid batches are typically used to save readings when surveying a large area of concrete e On the concrete mark out a pre defined grid of squares typically of 0 5 m pitch This is an arbitrary grid which does not necessarily align with the reinforcement bars e Use a Covermeter or similar instrument to locate and measure the minimum area of cover within each grid cell or the cover to the reinforcement bar nearest to each grid point depending upon your survey procedures 34 locati
48. you exit batching and hence the Half Cell Meter is not data logging readings will no longer be saved MENU DATA LOGGER EXIT BATCHING The following sections describe how to configure and use the Data Logger 38 DATA LOGGER EXIT BATCHING OPEN NEW BATCH OPEN EXISTING BATCH CLONE BATCH REVIEW BATCH PLOT BATCH PLOT OPTIONS EDIT BATCH TAGS DELETE BATCH DELETE ALL BATCHES FREE MEMORY 8 5 EXIT BATCHING Switches off batching the data logger No further readings are saved the display reverts to the reading screen and the BATCH softkey disappears 8 6 OPEN NEW BATCH Opens creates a new memory batch The Half Cell Meter uses the most recently created batch as a template for the new batch The batch name is based upon the alphanumeric value of the last batch created but all other header fields are left blank see What does a batch contain on page 35 1 Enter information in the header fields including the batch name as required see How to enter information into batch header fields on page 45 2 When you are happy with the details you have added or changed press 7 to create the batch The display switches to the reading screen and then starts batching the BATCH softkey appears on the reading screen 8 7 OPEN EXISTING BATCH Opens an existing memory batch 1 Use Left Right softkeys to scroll to the required batch h new batch is created with a name matching
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