JEROME® 631-X ™ HYDROGEN SULFIDE ANALYZER Operation Manual January 2003 Arizona Instrument LLC 1912 W 4th Street Tempe, AZ 85281 (800) 528-7411 (602) 470-1414 Fax (480) 804-0656 http://www.azic.com email: azi@azic.com - General intl@azic.com - International support@azic.
JEROME 631-X Hydrogen Sulfide Analyzer Operation Manual PROPRIETARY RIGHTS NOTICE This manual contains valuable information and material developed by Arizona Instrument LLC for use with the Jerome 631-X Hydrogen Sulfide Analyzer. No part of this manual can be reproduced or transmitted in any form or by any means, electronic, mechanical or otherwise.
Table of Contents 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. FOR THOSE WHO CAN'T READ THE WHOLE MANUAL NOW .................................................................4 INTRODUCTION ....................................................................................................................................................6 PRINCIPLE OF OPERATION...............................................................................................................................
1. FOR THOSE WHO CAN'T READ THE WHOLE MANUAL NOW This manual contains details that will optimize the results and the life of your instrument. Read and refer to the manual for complete details on operation, maintenance and troubleshooting, special voltage inputs and data output. The Jerome 631-X is easy to operate and ready for use upon receipt from the factory. • Remove the instrument from the packing material. Retain all packaging materials for any future shipment of the instrument.
• Check the voltage setting (110 or 220 VAC) on the back of the instrument. Ensure that it is set to the correct voltage. If the pointer is not aligned to the local voltage, turn the selector to point to the correct voltage. • Perform a sensor regeneration by following these steps: Connect the line cord between the connector on the back of the 631-X and an AC power outlet. Press the ON switch and then press the REGEN button. The instrument will begin a 10 minute regeneration cycle, indicated by .H.H.
2. INTRODUCTION The Jerome 631-X Hydrogen Sulfide Analyzer is an ambient air analyzer with a range of 0.003 ppm to 50 ppm (parts per million). CAUTION: The Jerome 631-X is for vapor use only. DO NOT allow the probe or the instrument's intake to be exposed to any liquid, dust or other foreign material. The 631-X is designed to be easy to operate for quick and accurate analysis of hydrogen sulfide vapor levels. It has few maintenance requirements.
Applications • • • • • • • • • • 3. Ambient air analysis Odor nuisance monitoring Regulatory compliance Control room corrosion monitoring Quality control Scrubber efficiency testing Accuracy check for other hydrogen sulfide monitors and control systems Hydrogen sulfide source detection Leak detection The Jerome 631-X can be operated from 100-120 or 200-240 VAC. To change the default voltage range, refer to “Setting the Input Voltage” on page 21.
Zero Air Filter The Zero Air Filter removes mercury vapor, mercaptans, and hydrogen sulfide from the air sample. Readings with the filter installed should be near zero. Because air that is cooler than the instrument will cause low readings and warmer air will cause higher readings, the Zero Air Filter should be used to equilibrate the unit to ambient air.
AZI Customer Service 800-528-7411 or 602-470-1414 Page 9 of 50
4. INSTRUMENT OPERATION LCD Codes LCD CODE EXPLANATION 000 Ready to sample .000 No hydrogen sulfide reading .8.8.8 Sensor saturated-regeneration needed (refer to page 12) .H.H.H Sensor regeneration in progress (.H.H.H flashes) .L.L.L Re-zero needed (refer to page 13) .P.P.P Power cord required or low line power, <100 VAC (or 200 VAC) (see pages 16 and 17, Changing the Fuse, if .P.P.P remains on after the cord is connected.) .LO BAT Recharge batteries (refer to page 17) .E.E.
Daily Operations Before each day's use of the Jerome 631-X, perform the following steps to verify proper instrument operation: • Press the power ON button. The digital meter displays 000. (Disregard the digital meter's initial momentary reading.) Recharge or replace the battery pack if the LO BAT indicator REMAINS ON. Refer to “Charging Batteries” on page 17 and/or “Replacing the Battery Pack” on page 21.
Sensor Regeneration Sensor regeneration is needed to clear the 631-X sensor of any accumulated hydrogen sulfide. This simple procedure should be done: • At the beginning of the day on which the instrument is to be used. • During the day when the sensor becomes saturated. • At the end of the day before storing the instrument. CAUTION: Ensure the voltage selector on the back of the instrument, near the power cord inlet connector, points to the local AC power value. See “Setting the Input Voltage” on page 21.
Zero Adjust • To ensure air entering the instrument is clean, install the aero air filter in the instrument’s intake and sample until the readings stabilize. • While pressing the ZERO button, turn the ZERO ADJUST potentiometer (shown at right) using the trimmer tool until the digital meter reads 0. If the LCD reads H, turn the ZERO ADJUST counterclockwise; If the LCD reads L, turn the ZERO ADJUST clockwise.
Sample Mode This is the standard operation mode and is used for optimum accuracy. • Press the power ON button. The LCD displays 000. Disregard the LCD's initial momentary readings. Recharge or replace the battery pack if the LO BAT indicator REMAINS ON, see page 17 and/or page 21 if necessary. • Allow a 1-minute warm up before beginning the next step to ensure the instrument's electronics have stabilized. • Press the SAMPLE button.
Survey Mode The survey mode takes samples every 3 to 20 seconds automatically. The length of time varies with the hydrogen sulfide concentration. Use this mode to locate the source of hydrogen sulfide, such as a leak, a hot spot, or to assess areas of potentially high hydrogen sulfide concentrations. After the survey mode is activated, the 631-X samples continuously. • Press the power ON button. The digital meter displays 000. Disregard the LCD’s initial momentary readings.
Operating on AC Power or Generator • For stationary use, the 631-X may be operated on AC power. Operating the instrument on AC power at all times eliminates the need for the battery pack and its necessary maintenance. The battery may be unplugged or removed completely whenever the instrument is operating on AC power.
Charging Batteries • Press the power OFF button. • Connect the AC power cord between the 631-X power receptacle and an AC power source. Complete battery recharging takes 14 hours. The 631-X contains a trickle charger so it may be continually plugged into an AC power source without damaging the battery pack. • The battery pack may be charged outside the instrument with an optional AZI IDC Battery Charger.
5. MAINTENANCE Preventive Maintenance Calendar To keep the Jerome 631-X operating at peak performance, follow the maintenance schedule below as a guide. Since maintenance is more a function of application and amount of use rather than time, your requirements may be different from the listed schedule. Call AZI Customer Service at 800-528-7411, 602-470-1414, or e-mail support@azic.com for additional guidance for your environment and operation.
Flow System The Jerome 631-X's flow system is the crucial link between the sensor and the sample. For the instrument to perform correctly, the flow system must be properly maintained. The user maintainable components of this system are the intake filter (.25 inch fritware), two scrubber filters and connecting tubing. Check the Preventive Maintenance Calendar on page 18, for a suggested schedule for changing fritware and scrubber filters.
Internal Filters • Replace the internal filters after six (6) months of use, or as needed. • Press the power OFF button and unplug the power cord. • Remove the two (2) side screws from the intake end of the instrument and open the case. • Carefully disconnect the Tygon tubing from both ends of the filters and discard the old filters. CAUTION: Scrubber filters contain Resisorb. Used filters, especially the scrubber filter may contain hydrogen sulfide also. Use proper methods when disposing of used filters.
Replacing the Battery Pack • Press the power OFF button. • Unplug the power cord. • Remove the two (2) side screws from the intake end of the instrument and open the case lid. • Disconnect the battery connector from the board. • Loosen the two (2) captive screws holding the battery bracket and remove the bracket. • Remove the old battery pack and replace with a new battery pack. • Replace the battery bracket and tighten the captive screws. • Connect the new battery connector to the board.
Changing the Fuse If the instrument display reads .P.P.P when the instrument is connected to AC power or when REGEN is pressed, or if the battery will not charge, the fuse may need to be replaced. The AC line power could also be less than 100 VAC (220 VAC). Check the fuse with an ohmmeter and the AC line power with a voltage meter. • Locate the power receptacle on the rear of the instrument. • Insert a small screwdriver in the slot, located in the power receptacle, and gently slide the fuse compartment out.
6. CALIBRATION The Jerome 631-X's gold film sensor is inherently stable and does not require frequent calibration. The interval between calibrations depends upon the application and frequency of use; however, the recommended interval is every 12 months. The Jerome 631-X has been factory calibrated using laboratory equipment containing NIST traceable permeation tubes. These permeation tubes have a rated accuracy of +/- 2%.
7. 631-X TROUBLESHOOTING Symptom Possible Cause Solution Power Problems Discharged battery or Unit does not turn ON. Unit turns on when power cord is plugged in. LCD displays 000 when instrument is operating on Dead battery. AC power. Recharge battery for a minimum of 14 hours. Refer to page 17. Unit does not turn on when connected to AC power cord. Open fuse. Replace fuse. Refer to page 22. Insufficient power. Use a voltmeter to verify there is power to the AC outlet.
Sampling Problems Airflow is restricted during the sensor regeneration cycle, causing possible permanent damage. High erratic results. High/erratic results Kinks and crimps in the Tygon tubing. Periodically check the Tygon tubing inside the instrument. Refer to page 20. 1. Install zero air filter in intake Internal hydrogen sulfide and tighten intake nut. Press contamination. SAMPLE button. After three samples, if readings are over 0.003 ppm, replace fritware filter, intake filter disk, and Tygon tubing.
Miscellaneous Problems Display reads .P.P.P when regeneration is attempted. Power cord not attached. Check power cord for connection Blown fuse. Replace fuse. Refer to page 22. Check line voltage settings. Refer Line voltage less than 100 VAC (or less than 200 VAC to page 21. for 220 unit). Cycles dipswitch set incorrectly. Check input cycle settings. Refer to page 39. If fuse and line voltage are OK, it may be circuit board adjustment or component failure.
8. JEROME 631-X TECHNICAL SPECIFICATIONS Range 0.003ppm (3ppb) to 50ppm H2S in four graduated ranges Sensitivity 0.003ppm H2S Precision 5% relative standard deviation Accuracy Range 0: Range 1: Range 2: Range 3: " 0.003ppm at 0.050ppm H2S " 0.03ppm at 0.50ppm H2S " 0.3ppm at 5.0ppm H2S " 2ppm at 25ppm H2S Response time-sample mode 10 to 50 ppm 1.0 to 10.0 ppm 0.10 to 1.00 ppm 0.001 to 0.100 ppm 13 seconds 16 seconds 25 seconds 30 seconds Response time-survey mode 0 to 50 ppm 1.0 to 9.9 ppm 0.
Optional Communications Capability Alarm output 30V DC, 100mA Data output 1. 2. RS-232 Serial, Baud Rate 1200 for use with data logger, and/or Jerome communication program. RS-232 Serial data format with 0 & 20mA current logic levels; Baud Rate 1200 (special industrial applications) and Analog 20 mA output. "OPTION BOARD" - See APPENDIX D - JEROME 631-X OPTION BOARD on page 40.
• Alarm output Maximum voltage Maximum current Pin assignments: Pin 9 Pin 10 Pin 7 Pin 23 30 VDC 100mAmp Switched battery (+) Alarm output (open collector, active low) Battery ground (-) Battery ground (-) • Switched battery connection for data logger Pin assignments: Pin 9 Battery (+) Pin 7 Battery ground (-) Pin 23 Battery ground (-) • Unswitched battery connection for external battery pack pin assignments Pin assignments: Pin 15 Battery (+) Pin 19 Battery (+) Pin 7 Battery ground (-) Pin 23 Battery gro
9. ACCESSORIES & MAINTENANCE PARTS PART # ITEM DESCRIPTION Y631 0901 631 Accessory Kit (See pictures beginning on page 32) 1400 2002 Probe 1400 3010 Tubing Adapter, 1/4” to 1/8” 2300 0001 Trimmer Tool 2600 3039 .25 Fritware 6000 4003 Line Cord, 115 VAC - USA and Canada Alt. 200-0003 Line Cord, 220-240 VAC - England Alt.
Jerome Data Logger Y6100 0057 Includes the Jerome Data Logger and JCI Software Kit. Y6100 0054 Jerome Communication Software Kit Hard Side Carry Case Includes a molded case with die Y411 0904 cut foam rubber inserts to hold the Jerome 631-X and accessories.
Soft Field Carrying Case 1400 0052 Hand/shoulder case with pockets for accessories.
Y26003945 Intake Kit PS 151 Tube Nut 2600 3039 .25 inch fritware 2500 3001 Tygon tubing 1/8" I.D. (1 foot) 2500 3002 Tygon tubing 1/16" I.D.
230 VAC IDC battery charger 4000 1012 Used to charge an uninstalled battery 6000 4003 100-120 VAC Line Cord Alternate – 220-240 VAC Line Cord for 200-0003 England Alternate – 220-240 VAC Line Cord for 200-0008 Europe Page 34 of 50 AZI Customer Service 800-528-7411 or 602-470-1414
5100 1012 Spare Fuse 6000 1055 JeromeCommunication Interface Cable 6000 1045 Adaptor, RS-232, 9M/25F For current prices and delivery information, call AZI Customer Service at (800) 528-7411 or (602) 470-1414. 10. Factory Calibration Service Service includes filter replacement, component testing, and instrument calibration to NIST traceable standards. For scheduling and shipping authorization, call AZI Customer Service at (800) 528-7411 or (602) 470-1414.
11. APPENDIX A - 631-X FUNCTIONAL TEST MODULE The Jerome Hydrogen Sulfide Functional Test Module provides a fast and easy method of verifying that Jerome 631-X Hydrogen Sulfide Analyzers are within specifications.
12. APPENDIX B - JEROME COMMUNICATIONS SOFTWARE The Jerome Communications Software (JCS) is used with 631-X Hydrogen Sulfide Analyzers that feature the communications configuration option. • The JCS allows the user to program the instrument for unattended monitoring and to download recorded data stored in the Jerome data logger. • Automatic sampling can be initiated every one (1) to sixty (60) minutes with programmable audible alarm levels.
JCI Kit Contents • • • • One disk containing the Jerome Communication Software Jerome Communication Interface Cable, AZI P/N 6000 1055 Cable Adaptor, SR-232, 9M/25F, AZI P/N 6000 1045 User’s manual System Requirements • Instrument: Jerome 631-X with the communications option. These Jerome instruments have a DB-25 connector and related internal hardware and firmware. • Computer: IBM (or compatible) PC, XT, AT, 286, 386, 486 or Pentium • Operating System: MSDOS or PCDOS 2.
13. APPENDIX C - INTERNAL DIP SWITCH SETTINGS The DIP switch identified as SW2 on the 631-X control board is located at the top center of the board. CAUTION: Switch the instrument’s power to OFF before opening the instrument and changing DIP switch settings.
14. APPENDIX D - JEROME 631-X OPTION BOARD Proper use of this board requires that the base instrument be fully functional and set correctly for the intended operation. Auto-Zero With the option board installed, the 631-X has a limited auto-zero function. This function cannot be disabled and is transparent to the user. The instrument can be manually zeroed as described in “Zero Adjust” on page 13.
• In some cases, the instrument cannot resume sampling after regeneration. .L.L.L appears on the display when the ZERO button is pressed and the error message “manual bridge adjust needed” is added to the notes column of the JCS text file when the JCS is used. If this problem persists, it may be necessary to re-set the auto-zero. • When necessary to re-adjust the auto-zero point: Turn the instrument off. Make a note of the original DIP switch settings of SW100 on the option board.
Auto-Sample If a data logger is connected and operating in the manual sampling mode or a data logger is not connected the following automatic sampling rates may be selected with SW100 dip switch settings: Dip switch settings 3 5 4 Sampling frequency ON ON ON No automatic sampling OFF ON ON 5 minutes OFF OFF ON 15 minutes OFF ON OFF 30 minutes OFF OFF OFF 1 hour This auto-sample function will not function if a data logger is connected and operating in automatic sampler mode programmed
Jerome 631-X instruments shipped after early 1995, are capable of providing 0-2 volts analog output. Instruments shipped before that time can be upgraded by a firmware update and adjustment. Instruments that are capable of 0-2 volt output can be upgraded to the 4-20 mA output with the addition of an option board upgrade. This must be installed at the factory. Connection and Setup: • 0-2 volt devices connect as shown in Figure 1.
• The 4-20 mA passive receivers must not contain a voltage source to power the loop current. They do require the addition of a separate isolated power supply. Typically a supply that delivers 15 to 20 volts DC at 50 mA is sufficient. Wire these as in Figure 3. Note that some 12-volt DC wall transformers (as used on portable equipment) may deliver 15 to 20 volts when they are lightly loaded.
Fresh Air Solenoid An external three-way solenoid can be used to provide fresh air or conditioned air during sensor regeneration. This may be necessary if the sample stream lacks molecular oxygen. A low current six volt DC solenoid, connected between pins 19 and 11 of the 25 pin rear panel connector, will be energized during the regeneration cycle if the option board SW100 switch 6 is placed in the OFF position.
DC Power Operation Instruments with the 631-X option board modification can be used with any +12 VDC source for continuous operation, if the AZI Power Inverter Kit, P/N Y031 0902 is installed along with the option board. To preserve the life of the DC power source, usually a car or truck battery, the power inverter will switch on automatically to supply the AC necessary for regeneration only. The external switch on the inverter should always be OFF to preserve battery life during normal sampling.
Ensure that the inverter’s power switch is in the “OFF” position. LEAVE the power switch in the “OFF” position at all times. The interface board will activate the inverter when necessary. If the inverter power switch is placed in the “ON” position, it will cause a continuous drain on the external 12-volt power system. • Remove the screws from the rear cover of the inverter and remove the cover.
15. APPENDIX E: CALCULATION OF DYNACALIBRATOR H2S CONCENTRATION UNIT DEFINITIONS mole / 6.02@1023 molecules nanogram (ngm) = gm 10 9 PPMv / 10-6 CALCULATIONS (molar volume @ 25 o C) ∗ (tube permeation rate) (molecular weight of H 2 S) = PPM volume/volume (total gas flow rate) ltr 24.45 ∗ ngm mole ∗ 5090 ∗ gm min 34.07 ∗ mole = 0.
16. WARRANTY Arizona Instrument LLC (seller) warrants to buyer that Jerome products delivered pursuant to this agreement shall, at the time of delivery, and for a period of one (1) year. Thereafter (the Internal Battery Pack, where applicable, is warranted for a period of ninety [90] days only), to be free from defects in material or workmanship and shall conform to seller's specifications or such other specifications as seller has agreed to in writing.
TRADEMARK AND COPYRIGHT PROTECTION Jerome Instrument, Arizona Instrument, AZI and the stylized AZI are all registered trademarks of Arizona Instrument LLC. Copyright 1990-2003, Arizona Instrument LLC. All Rights Reserved. Resisorb™ is a registered trademark of J.T. Baker Chemical Company Tygon™ is a registered trademark of Norton.