9101 Zero Point Dry-Well
Contents
1. Hart Scientific 9101 Zero Point Dry Well User Manual Rev 501501 Fluke Corporation Hart Scientific Division 799 E Utah Valley Drive e American Fork UT 84003 9775 USA Phone 1 801 763 1600 Telefax 1 801 763 1010 E mail support hartscientific com www hartscientific com Subject to change without notice e Copyright 2005 Printed in USA Rev 501501 Table of Contents 1 Before You Start 1 1 Symbols Used yra msi ss sure EG sir 1 2 Safety Information 1 2 1 WARNINGS cerana al iy We A E rer a m ee ee 1 2 2 CAUTIONS 3 2 scurra eet ane Me dan de Anse a a AN aie deci 1 3 Authorized Service Centers 2 Introduction lt es sesa 4 du su su d s su sua 3 Specifications and Environmental Conditions 3 1 Specifications ke D due e du nd t ee de 3 2 Environmental Conditions 3 3 Warranty gs eck eee EERE OGRE OO ae oS 4 Quek Starts ss se se s Ree Ske A 4 1 Unpacking sra acy ae Go eee ace dus ee ee po 4 2 SEUL res douar Sees Se Say 4 3 POWELL 2 ai LIEN NAN Ps Soe eo 5 General Operation 5 1 SETUP gi eS LS dis RNB ed ee hs cou Bhat as 5 2 COGNE 24 24 id GAG a Lie a eee a 53 Measurement cng Lois Li UNE de CHERE 6 Test Probe Calibration 20606 44 ne we bee ees 6 1 Calibration Methods 6 1 1 Comparison Calibr2. Operable 5 to 27 C 40 to 80 F temperature range Accuracy 18 to 25 C 64 to 77 F temperature range Cooling time 15 to 30 min Depending on ambient Well 3 wells 2 outside wells 25 dia X 6 deep center well 280 dia x 6 deep Power 115 VAC 10 1 A or 230 VAC 10 0 5 A 50 60 Hz 125 W Dimensions 12 25 H x 8 5 W x 5 75 D 311 x 216 x 146 mm Environmental Conditions Although the instrument has been designed for optimum durability and trou ble free operation it must be handled with care The instrument should not be operated in an excessively dusty or dirty environment Maintenance and clean ing recommendations can be found in the Maintenance Section of this manual The instrument operates safely under the following conditions e temperature range 5 50 C 41 122 F e ambient relative humidity maximum 80 for temperature lt 31 C de creasing linearly to 50 at 40 C e pressure 75kPa 106kPa e mains voltage within 10 of nominal e vibrations in the calibration environment should be minimized e altitude does not effect the performance or safety of the unit 9101 Zero Point Dry Well User s Guide 3 3 Warranty Fluke Corporation Hart Scientific Division Hart warrants this product to be free from defects in material and workmanship under normal use and service for a period as stated in our current product catalog from the date of shipment This warranty extends only to the original purchas
3. on the surface which may damage the paint It is important to keep the well of the calibrator clean and clear of any for eign matter DO NOT use fluid to clean out the well The dry well calibrator should be handled with care Avoid knocking or dropping the calibrator DO NOT slam the probe stems into the well This type of action can cause a shock to the sensor If a hazardous material is spilt on or inside the equipment the user is re sponsible for taking the appropriate decontamination steps as outlined by the national safety council with respect to the material If the mains supply cord becomes damaged replace it with a cord with the appropriate gauge wire for the current of the instrument If there are any questions call a Hart Scientific Authorized Service Center for more information Before using any cleaning or decontamination method except those rec ommended by Hart users should check with a Hart Scientific Authorized Service Center to be sure that the proposed method will not damage the equipment Tf the instrument is used in a manner not in accordance with the equip ment design the operation of the dry well may be impaired or safety haz ards may arise 17 9 Troubleshooting 9 Troubleshooting If the amber LED on the top of the unit is off e Check that there is power to the unit If there is power to the unit contact an Authorized Service Center for further assistance 19
4. VERE INJURY or DEATH may result if personnel fail to observe safety pre cautions Before working inside the equipment turn power off and dis connect power cord 1 Before You Start Authorized Service Centers e DO NOT use this unit in environments other than those listed in the user s manual e DO NOT use this unit for any application other than calibration work e Follow all safety guidelines listed in the user s manual e Calibration Equipment should only be used by Trained Personnel 1 2 2 CAUTIONS To avoid possible damage to the instrument follow these guidelines e Operate the instrument in room temperatures between 5 50 C 41 122 F Allow sufficient air circulation by leaving at least 6 inches of space be tween the instrument and nearby objects Overhead clearance needs to al low for safe and easy insertion and removal of probes for calibration e The dry well is a precision instrument Although it has been designed for optimum durability and trouble free operation it must be handled with care The instrument should not be operated in excessively wet oily dusty or dirty environments It is important to keep the wells of the in strument clean and clear of any foreign matter Do not operate near flam mable materials e DO NOT use fluids to clean out the well e Ifa mains supply power fluctuation occurs immediately turn off the in strument Power bumps from brown outs and black outs could damage the instr
5. an Waste Electrical and Electronic Equipment WEEE Directive 2002 96 EC mark 1 2 Safety Information Use this instrument only as specified in this manual Otherwise the protection provided by the instrument may be impaired The following definitions apply to the terms Warning and Caution e WARNING identifies conditions and actions that may pose hazards to the user e CAUTION identifies conditions and actions that may damage the in strument being used 1 2 1 WARNINGS To avoid personal injury follow these guidelines e Before initial use or after transport or after storage in humid or semi hu mid environments or anytime the instrument has not been energized for more than 10 days the instrument needs to be energized for a dry out period of 2 hours before it can be assumed to meet all of the safety re quirements of the IEC 1010 1 If the product is wet or has been in a wet environment take necessary measures to remove moisture prior to apply ing power such as storage in a low humidity temperature chamber operat ing at 50 degree centigrade for 4 hours or more e Use only a grounded AC mains supply of the appropriate voltage to power the instrument The dry well requires a maximum of 1 amp 50 60 Hz 115 230 VAC 10 e DO NOT connect this unit to a non grounded non polarized outlet e DO use a ground fault interrupt device e HIGH VOLTAGE is used in the operation of this equipment SE
6. ations scr os hae ara a vies eS ee wa 6 1 2 Calibration of Multiple Probes 6 2 Dry Well Characteristics 6 2 1 Vertical Gradient dio a a ere we OMe ac 6 2 2 Stabilization and Accuracy 7 Calibration Procedure 8 Maintenance 9 Troubleshooting 4 os wi eme se ss vue 13 13 13 14 1 Before You Start Symbols Used 1 1 Before You Start Symbols Used Table 1 lists the International Electrical Symbols Some or all of these symbols may be used on the instrument or in this manual Table 1 International Electrical Symbols Symbol Description NU AC Alternating Current PS AC DC Battery CE Complies with European Union Directives Mm MA DC Double Insulated Electric Shock Fuse PE Ground Hot Surface Burn Hazard Read the User s Manual Important Information Off On O Oi gt o 9101 Zero Point Dry Well User s Guide Symbol Description Canadian Standards Association us OVERVOLTAGE Installation CATEGORY II Pollution Degree 2 per IEC1010 1 re CATI fers to the level of Impulse Withstand Voltage protection provided Equipment of OVERVOLTAGE CATEGORY II is energy consuming equipment to be supplied from the fixed installation Examples include household office and laboratory appliances C TIC Australian EMC Mark The Europe
7. cause less error in the compar ison calibration method than with the direct calibration method Dry Well Characteristics Understanding the thermal characteristics of the dry well calibrator can help you achieve the best accuracy and efficiency possible Vertical Gradient There is a temperature gradient vertically in the test well The heater has been applied to the block in such a way as to compensate for nominal heat losses out of the top of the dry well and minimize vertical temperature gradients How ever actual heat losses will vary depending on the number and types of probes inserted into the calibrator and the block temperature For best results insert probes the full depth of well Stabilization and Accuracy The stabilization time of the dry well calibrator will depend on the conditions and temperatures involved Typically the dry well will be stable to 0 1 C within 5 minutes of reaching the set point temperature as indicated by the dis play Ultimate stability will be achieved 10 to 20 minutes after reaching the set temperature Inserting a cold probe into a well will require another period of stabilization de pending on the magnitude of the disturbance and the required accuracy For ex ample inserting a 1 4 inch diameter room probe at temperature into a sleeve at 300 C will take approximately 5 minutes to be within 0 1 C of its set point and will take 10 minutes to achieve maximum stability Decreasing the time req
8. d to provide a stable zero ref erence for thermocouples or for calibrating temperature probes The 9101 has three wells so that multiple probes may be calibrated and compared at once The 9101 uses solid state electronics to control the temperature of an aluminum block The block temperature is monitored with a high sensitivity thermistor sensor The controlling circuit adjusts the current to thermoelectric modules which cool the block maintaining a stable temperature Since the current to the cooling modules is constant DC there is no problem with induced EMF noise in the user s probes or thermocouples due to switching transients of the cooling circuits Because the temperature control is done with solid state electronics the 9101 is rugged and stable The zero point dry well will not be damaged by subfreezing temperatures during shipping or storage The 9101 is calibrated at the factory for NIST traceable accuracy It may also be easily calibrated in the field to the user s own standard Figure 1 9101 Zero Point Calibrator 3 Specifications and Environmental Conditions Specifications 3 1 3 2 Specifications and Environmental Conditions Specifications Temperature 0 C Accuracy 0 02 C typical 0 05 C maximum 18 C 25 C ambient Stability 0 005 C Temperature 0 005 C C amb Coefficient Stabilization Time Approximately 30 minutes the ready lamp indicates stable control at 0 C
9. een wells e Place the reference probe in one well e Place the probe to be calibrated the unit under test UUT in another well e With the reference inserted into one well and the probe under test inserted into a second well make measurements of each e Swap the locations of the reference probe and probe under test Allow plenty of time for thermal settling e Make another set of measurements of the reference probe and the probe under test e Average the two measurements of the reference probe Average the two measurements of the probe under test Averaging the two measurements in this way eliminates error due to temperature gradients between the two wells 13 9101 Zero Point Dry Well User s Guide 6 2 6 2 1 6 2 2 e Compare the averaged measurement of the probe under test with the aver aged measurement of the reference probe e For best results repeat the test several times at the same temperature and at different temperatures This method can be used with different types of probes but the user must deter mine the uncertainty of the measurement Calibration of Multiple Probes Fully loading the calibrator with probes increases the time required for the tem perature to stabilize after inserting the probes Be sure that the temperature has stabilized before starting the calibration Multiple probes may be calibrated simultaneously using either the direct or comparison calibration method Stem effect will
10. er and shall not apply to any product which in Hart s sole opinion has been subject to misuse alteration abuse or abnormal conditions of operation or handling Software is warranted to operate in accordance with its programmed instruc tions on appropriate Hart products It is not warranted to be error free Hart s obligation under this warranty is limited to repair or replacement of a product which is returned to Hart within the warranty period and is determined upon examination by Hart to be defective If Hart determines that the defect or malfunction has been caused by misuse alteration abuse or abnormal condi tions or operation or handling Hart will repair the product and bill the pur chaser for the reasonable cost of repair To exercise this warranty the purchaser must forward the product after calling or Writing an Authorized Service Center see Section 1 3 for authorization The Service Centers assume NO risk for in transit damage THE FOREGOING WARRANTY IS PURCHASER S SOLE AND EXCLU SIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES EX PRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OR MECHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR USE HART SHALL NOT BE LIABLE FOR ANY SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAM AGES OR LOSS WHETHER IN CONTRACT TORT OR OTHERWISE 4 Quick Start Unpacking 4 1 4 2 4 3 Quick Start Unpacking Unpack the dry well carefully and inspec
11. low the calibrator to warm up for 10 minutes after power up and then allow adequate stabilization time after reach ing the set point temperature After completing calibration allow the block to cool before switching the power off Calibration Methods Never introduce any foreign material into the probe hole of the insert Flu ids etc can leak into the calibrator causing damage to the calibrator or binding and damage to your probe Comparison Calibration Comparison calibration involves testing a probe against a similar reference probe The advantage to this method is that better accuracy can be achieved since errors due to dry well inaccuracy stem effect and drift can be reduced After inserting the probes to be calibrated allow sufficient time for the probes to settle and the temperature of the dry well to stabilize It is best if both the reference probe and the probe under test are the same size and construction Using probes with different lengths diameters and materials will have different stem effects causing an unknown temperature difference All dry wells have horizontal and vertical gradients that change with temperature This is an unknown variable which can be factored out if probes are the same type length diameter and material Probes should be inserted to the same depth in the well The following procedure can be used to calibrate a probe against a reference while eliminating error due to temperature gradients betw
12. r circulation For best results operate the dry well in room of constant temperature between 18 to 25 C 64 to 77 F free from drafts Stable ambient temperatures allow stable well gradients and less drift Cooling Turn on power by pressing the switch on the top of the instrument to the on po sition Notice that the amber POWER indicator light turns on and the fan be gins circulating air The dry well will begin to cool the well until it reaches 0 C and stabilizes Typically it takes 15 to 30 minutes for the block to reach 0 and stabilize longer at higher ambient temperatures When the block has reached 0 and stabilized the green READY indicator light will turn on and the instrument 1s ready for use Measurement When the instrument is ready insert the probe into one of the three well holes at the top of the instrument The probe should be inserted the full depth of the well since the temperature is most accurate at the bottom The probe must make good contact with the bottom of the well A little heat conduction grease on the probe may help It also helps to apply a small constant sideways and down wards force on the probe After inserting the probe allow approximately 10 minutes for the temperature to stabilize At this point the probe may be mea sured for accuracy or used as a stable zero reference 11 6 Test Probe Calibration Calibration Methods 6 1 6 1 1 Test Probe Calibration For optimum accuracy and stability al
13. t it for any damage that may have oc curred during shipment If there is shipping damage notify the carrier immediately Verify that the following components are present e 9101 Dry well e 2130 Well tube sizing kit e Power Cord e User s Guide e Report of Calibration e Calibration Label Set up Place the 9101 zero point dry well upright on a flat stable surface The area around the instrument must be clear to allow adequate air circulation For best results operate the dry well in room of constant temperature between 18 to 25 C 64 to 77 F free from drafts Stable ambient temperatures allow stable well gradients and less drift Turn on the power to the calibrator by toggling the power switch on The fan should begin quietly blowing air through the instrument The amber LED will light when the unit is energized The green LED will light when the unit is ready to use The unit is not at the correct temperature until the green LED is illuminated Power Connect the power cord provided into the instrument and plug the other end into a power socket of specified voltage Normally this will be 115 VAC 10 50 60 Hz If specified upon ordering the instrument may optionally be configured to operate at 230 VAC 10 5 General Operation Set up 5 1 5 2 5 3 General Operation Set up Place the 9101 zero point dry well upright on a flat stable surface The area around the instrument must be clear to allow adequate ai
14. uired for the calibration process can be accomplished by knowing how soon to make the measurement It is recommended that typi cal measurements be made at the desired temperatures with the desired test probes to establish these times 7 Calibration Procedure Calibration Procedure The user may easily calibrate the 9101 zero point dry well at any time to agree more closely with a particular standard thermometer To calibrate the instru ment insert the standard probe into the center well as discussed in Section5 3 and allow the temperature to stabilize At the back of the 9101 is a small hole covered by a calibration void if removed sticker which allows access to a trimmer potentiometer used to set the temperature Insert a small adjustment tool or screwdriver through the hole and slowly turn the trimmer until the stan dard measures 0 0 C Allow a few minutes between adjustments to allow time for the temperature to change and stabilize 15 8 Maintenance Maintenance The calibration instrument has been designed with the utmost care Ease of op eration and simplicity of maintenance have been a central theme in the product development Therefore with proper care the instrument should require very little maintenance Avoid operating the instrument in an oily wet dirty or dusty environment If the outside of the instrument becomes soiled it may be wiped clean with a damp cloth and mild detergent DO NOT use harsh chemicals
15. ument Wait until the power has stabilized before re energizing the instrument 1 3 Authorized Service Centers Please contact one of the following authorized Service Centers to coordinate service on your Hart product Fluke Corporation Hart Scientific Division 799 E Utah Valley Drive American Fork UT 84003 9775 USA Phone 1 801 763 1600 Telefax 1 801 763 1010 E mail supportO hartscientific com Fluke Nederland B V Customer Support Services Science Park Eindhoven 5108 9101 Zero Point Dry Well User s Guide 5692 EC Son NETHERLANDS Phone 31 402 675300 Telefax 31 402 675321 E mail ServiceDesk fluke nl Fluke Int l Corporation Service Center Instrimpex Room 2301 Sciteck Tower 22 Jianguomenwai Dajie Chao Yang District Beijing 100004 PRC CHINA Phone 86 10 6 5 12 3436 Telefax 86 10 6 5 12 3437 E mail xingye han fluke com cn Fluke South East Asia Pte Ltd Fluke ASEAN Regional Office Service Center 60 Alexandra Terrace 03 16 The Comtech Lobby D 118502 SINGAPORE Phone 65 6799 5588 Telefax 65 6799 5588 E mail antng singa fluke com When contacting these Service Centers for support please have the following information available Model Number Serial Number Voltage Complete description of the problem 2 Introduction Introduction The Hart model 9101 zero point dry well is a precision instrument which main tains a constant temperature at 0 C It can be use
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