Arizona Hydrogen Sulfide Analyzer Jerome 631-X User manual

JEROME®631-X
™
HYDROGEN SULFIDE ANALYZER
Operation Manual
January 2003
Arizona Instrument LLC
1912 W 4th Street
Tempe, AZ 85281
[phone]
[phone]
Fax [phone]
http://www.azic.com
email:
[email protected] - General
[email protected] - International
[email protected] - Customer Support
700-0037-A

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. This includes
photocopying and recording or in connection with any information storage or retrieval system
without the express written permission of Arizona Instrument LLC.
ALL RIGHTS RESERVED
Copyright 2003, Arizona Instrument LLC
Resisorb™ is a registered trademark of J.T. Baker Chemical Company.
Tygon™ is a registered trademark of Norton.
Page 2 of 50 AZI Customer Service 800-528-7411 or 602-470-1414

Table of Contents
1. FOR THOSE WHO CAN'T READ THE WHOLE MANUAL NOW .................................................................4
2. INTRODUCTION ....................................................................................................................................................6
3. PRINCIPLE OF OPERATION............................................................................................................................... 7
Zero Air Filter .............................................................................................................................................................8
Gas Flow Schematics...................................................................................................................................................8
4. INSTRUMENT OPERATION ................................................................................................................................10
LCD Codes..................................................................................................................................................................10
Daily Operations..........................................................................................................................................................11
Sensor Regeneration....................................................................................................................................................12
Zero Adjust..................................................................................................................................................................13
Sample Mode............................................................................................................................................................... 14
Survey Mode ...............................................................................................................................................................15
Operating on AC Power or Generator .........................................................................................................................16
Operating on Internal Battery Power ...........................................................................................................................16
External battery power.................................................................................................................................................16
Charging Batteries .......................................................................................................................................................17
Obtaining Maximum Battery Life ...............................................................................................................................17
5. MAINTENANCE......................................................................................................................................................18
Preventive Maintenance Calendar ...............................................................................................................................18
Flow System................................................................................................................................................................19
.25 inch Fritware Filter ........................................................................................................................................19
Internal Filters .....................................................................................................................................................20
Replacing the Battery Pack.......................................................................................................................................... 21
Setting the Input Voltage.............................................................................................................................................21
Changing the Fuse .......................................................................................................................................................22
6. CALIBRATION........................................................................................................................................................23
Verification of Calibration and Quality Control ..........................................................................................................23
7. 631-X TROUBLESHOOTING ................................................................................................................................24
8. JEROME 631-X TECHNICAL SPECIFICATIONS ............................................................................................27
Optional Communications Capability..........................................................................................................................28
Instrument I/O Interface ..............................................................................................................................................28
9. ACCESSORIES & MAINTENANCE PARTS....................................................................................................... 30
Spare Parts...................................................................................................................................................................32
10. FACTORY CALIBRATION SERVICE.................................................................................................................35
11. APPENDIX A - 631-X FUNCTIONAL TEST MODULE.....................................................................................36
Simple Operation......................................................................................................................................................... 36
12. APPENDIX B - JEROME COMMUNICATIONS SOFTWARE.........................................................................37
Instrument Control with Real-Time Graphics .............................................................................................................37
JCI Kit Contents ..........................................................................................................................................................38
System Requirements ..................................................................................................................................................38
Data Logger Option..................................................................................................................................................... 38
13. APPENDIX C - INTERNAL DIP SWITCH SETTINGS......................................................................................39
DIP Switch Settings:....................................................................................................................................................39
14. APPENDIX D - JEROME 631-X OPTION BOARD.............................................................................................40
Auto-Zero ....................................................................................................................................................................40
Instrument Zeroing ......................................................................................................................................................40
Timed Regeneration ....................................................................................................................................................41
Auto-Sample................................................................................................................................................................ 42
4-20 MA Analog Output..............................................................................................................................................42
SW101 Functions: ...............................................................................................................................................42
Connection and Setup:.........................................................................................................................................43
Fresh Air Solenoid.......................................................................................................................................................45
DC Power Operation ...................................................................................................................................................46
DC Power Adaptor Kit, AZI P/N Y031-0902......................................................................................................46
15. APPENDIX E: CALCULATION OF DYNACALIBRATOR H2S CONCENTRATION ..................................48
16. WARRANTY ............................................................................................................................................................49
AZI Customer Service 800-528-7411 or 602-470-1414 Page 3 of 50

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.
If the instrument is returned to AZI for any reason, it must be
placed in the original packaging materials that have been tested and
proven to be effective protection during shipment.
• Call AZI Customer Service at 800-528-7411 or 602-470-1414 for Return Material
Authorization (RMA) information prior to returning a unit.
• For all shipments, boxes and packing materials are available from AZI.
• Pack the Jerome instrument only in a Jerome shipping container.
AZI WILL NOT BE RESPONSIBLE FOR SHIPPING DAMAGE.
IF YOU RETURN THE INSTRUMENT IMPROPERLY PACKAGED OR
SHIPPED,
YOU SHOULD INSURE IT FOR FULL VALUE.
• Check for any damage and confirm receipt of all parts on
your packing list. Contact Arizona Instrument Customer
Service at [phone] or [phone] if you have
any questions.
• Press the ON button. The display should read 000 in less
than one second.
 A LO BAT message appears briefly in the upper left
corner.
 If the LO BAT light persists, recharge the battery.
See page 17.
Page 4 of 50 AZI Customer Service 800-528-7411 or 602-470-1414

• 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.H flashing
on the display. Do not interrupt this cycle. For a complete description of this
process, see page 12.
 If any error message, such as .P.P.P, appears on the display, see the “Troubleshooting”
section beginning on page 24.
• When regeneration is complete, zero the sensor by pressing the ZERO button and turning
the zero adjust screw, located under the handle, until the display reads 0.
• The instrument is now ready to sample.
• To ensure the input to the instrument contains no hydrogen sulfide or mercaptans, use a
Zero Air Filter, AZI P/N Z2600 3905. The Zero Air Filter cleans the air sample and should
produce sample readings of less than 0.003 mg/m3. Therefore, use the filter to:
 Equilibrate the instrument to temperatures that are higher or lower than the instrument.
Sample with filter installed until the reading is below 0.003 mg/m3.
 Identify contamination within the unit.
 Confirm the presence of hydrogen sulfide when readings are elevated. Install filter and
verify that the readings go down with filter installed.
• When the instrument measures hydrogen sulfide, the zero display will be replaced with H.
CAUTION
Do not adjust the ZERO after the instrument has measured hydrogen sulfide
or before the next regeneration. (Occasionally the display may drop to .L.L.L
(indicating low) between the initial zeroing and the first sample. It is OK to
readjust the ZERO if the instrument has not measured hydrogen sulfide.)
• The instrument is designed for ambient air monitoring. DO NOT allow the probe or the
instrument’s intake to be exposed to any liquid.
• The instrument is not explosion proof.
• Press the SAMPLE button to start a 10 second sampling cycle.
• Perform sensor regeneration after each day’s testing.
• Perform another sensor regeneration and re-zero the instrument before each day’s use.
• Perform sensor regeneration after 30 days of storage or inactivity.
Call AZI Customer Service, at [phone] from the United States and Canada or (602)
470-1414 if you have any questions. If you prefer, you may send e-mail to [email protected]
AZI Customer Service 800-528-7411 or 602-470-1414 Page 5 of 50

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. However, please take a moment to read this
manual before attempting operation. If you have any questions about your application or
operation, please call AZI Customer Service at [phone] or [phone] or e-mail
[email protected] for assistance.
631-X Features
• Accurate analysis of hydrogen sulfide in seconds
• Wide detection range allows multiple applications
• Survey mode for rapid source detection of hydrogen sulfide concentrations
• Rechargeable internal battery pack for portability
• Automatic backlight for LCD during low light conditions
• Microprocessor ensures a linear response throughout the entire range of the sensor
• Inherently stable gold film sensor
Optional Accessories
• Data Logger, P/N Y6100 0057, to record field monitoring information
• Jerome Communication Software Kit, P/N Y6100 0054, for unattended fixed-point
sampling and downloading information from the data logger to a computer.
• Option Board (factory installed option) for external fresh air solenoid support, auto-zeroing,
DC power operation, timed regeneration, 4-20 mA or 0-2 V analog output, and timed
sampling
• Functional Test Module (FTM) and Accessory Kit, P/N Z2600 0918 and Y2600 0902, for
sensor calibration verification in the field
• Field Carrying Cases, hard sided P/N Y411 0904 or soft P/N 1400 0052, for versatile
handling and additional storage
• Maintenance Kit, P/N Y631 0905 for routine maintenance and upkeep
Page 6 of 50 AZI Customer Service 800-528-7411 or 602-470-1414

Applications
• 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.
3. PRINCIPLE OF OPERATION
A thin gold film, in the presence of hydrogen sulfide, undergoes an increase in electrical resistance
proportional to the mass of hydrogen sulfide in the sample.
When the SAMPLE button is pressed, an internal pump pulls ambient air over the gold film sensor
for a precise period. The sensor absorbs the hydrogen sulfide. The instrument determines the
amount absorbed and displays the measured concentration of hydrogen sulfide in ppm. During
normal sampling, the ambient air sample is diluted in the flow system at a ratio of 100:1. When
sampling in Range 0, (where low levels of hydrogen sulfide are expected) undiluted air samples
are drawn across the gold film sensor.
The instrument’s microprocessor automatically re-zeroes the digital meter at the start of each
sample cycle and freezes the meter reading until the next sample cycle is activated, thus
eliminating drift between samples.
During the sample mode cycle, bars on the LCD represent the percentage of sensor saturation.
Depending on the concentrations, 50 to 500 samples may be taken before the sensor reaches
saturation. At that point, a 10-minute heat cycle must be initiated to remove the accumulated
hydrogen sulfide from the sensor. During the sensor regeneration cycle, both solenoids are closed
to cause air to pass through a scrubber filter and provide clean air for the regeneration process.
The flow system’s final scrubber filter prevents contamination of the environment.
The heat generated during the regeneration may cause some low level thermal drift. To ensure
maximum sample accuracy, wait 30 minutes after regeneration before zeroing and using the
instrument.
AZI Customer Service 800-528-7411 or 602-470-1414 Page 7 of 50

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.
Continuous sampling with clean air will not cause saturation of the gold film sensor but will
equalize temperatures faster to allow accurate analysis to begin sooner.
The Zero Air Filter can also be used to identify contamination within the instrument. If the
readings do not reduce to near zero with the filter installed, contamination should be suspected. If
the readings do drop to near zero with the filter installed but elevate with the filter removed, the
presence of hydrogen sulfide at the sampled location is confirmed.
For more information on the use of the Zero Air Filter, contact customer service at 1-800-528-
7411, 1-602-470-1414, or visit our web site at http://www.azic.com.
Gas Flow Schematics
Page 8 of 50 AZI Customer Service 800-528-7411 or 602-470-1414

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.E Same as LO BAT, automatically shuts off
.HL Very high concentration has been detected. Refer to your safety
policy for additional direction to confirm the concentrations."
DURING SAMPLING
.- 0-25% sensor saturation
.-- 25-50% sensor saturation
.--- 50-75% sensor saturation
-.--- 75-100% sensor saturation
DURING SAMPLING, USING SURVEY MODE
- Survey sampling (minus sign flashes continuously)
WHEN ZERO IS
DEPRESSED
Adjust to 0 only after sensor regeneration. It is normal for the
display to read H after sampling has started.
0 Zero, ready to sample
H High, turn Zero potentiometer counterclockwise
L Low, turn Zero potentiometer clockwise
Page 10 of 50 AZI Customer Service 800-528-7411 or 602-470-1414