Page 1
Hydrogen Sulfide Detector
Part Number: 71-0227RK
Revision: 0
65-2427RK-05
Operator’s Manual
Released: 7/18/14
RKI Instruments, Inc.
www.rkiinstruments.com
Page 2
WARNING
Read and understand this instruction manual before operating
instrument. Improper use of the detector could result in bodily
harm or death.
Periodic calibration and maintenance of the detector is essential
for proper operation and correct readings. Please calibrate and
maintain this detector regularly! Frequency of calibration
depends upon the type of use you have and the sensor types.
T ypical calibration frequencies for most applications a re between
3 and 6 months, but can be required more often or less often
based on your usage.
65-2427RK-05 H2S Detector
Page 3
Product Warranty
RKI Instruments, Inc. warrants gas alarm equipment sold by us to be free from defects in
materials, workmanship, and performance for a period of one year fr o m date of shipment
from RKI Instruments, Inc. Any parts found defective withi n tha t period will be repaired
or replaced, at our option, free of charge. This warranty does not apply to those items
which by their nature are subject to deterioration or consumption in normal ser v ice, and
which must be cleaned, repaired, or replaced on a routine basis. Examples of such items
are:
W arranty is voided by abuse including mechanical damage, alteration, rough handling, or
repair procedures not in accordance with the operator’s manual. This warranty indicates
the full extent of our liability , a nd we are not r esponsible for removal or r eplacement costs,
local repair costs, transportation costs, or contingent expenses incurred without our prior
approval.
a) Absorbent cartridges d) Batteries
b) Pump diaphragms and valves e) Filter elements
c) Fuses
THIS WARRANTY IS EXPRESSLY IN LIEU OF ANY AND ALL OTHER
WARRANTIES AND REPRESENTATIONS, EXPRESSED OR IMPLIED,
AND ALL OTHER OBLIGATIONS OR LIABILITIES ON THE PART OF
RKI INSTRUMENTS, INC. INCLUDING BUT NOT LIMITED TO, THE
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE. IN NO EVENT SHALL RKI INSTRUMENTS,
INC. BE LIABLE FOR INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
LOSS OR DAMAGE OF ANY KIND CONNECTED WITH THE USE OF
ITS PRODUCTS OR FAILURE OF ITS PRODUCTS TO FUNCTION OR
OPERATE PROPERLY.
This warranty covers instruments and parts sold to users by authorized distributors,
dealers, and representatives as appointed by RKI Instruments, Inc.
We do no t as su me indemnif ic a t ion for any accident or d amage caused b y t he op e r a t ion of
this gas monitor, and our warranty is limited to the replacement of parts or our complete
goods.
65-2427RK-05 H2S Detector
Page 4
Table of Contents
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
H2S Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Junction Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Mounting the H2S Detector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Wiring the H
Startup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Introducing Incoming Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Setting the Zero Signal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
S Detector to a Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2
Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Replacing Components of the H
S Detector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Preparing for Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Setting the Zero Reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Setting the Response Reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Returning to Normal Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
65-2427RK-05 H2S Detector
Page 5
Overview
!
This manual describes the 65-2427RK-05 hydrogen sulfide (H2S) detector . This manual
also describes how to install, start up, maintain, and calibrate the detector when it is used
with a gas monitoring controller. A parts list at the end of this manual lists replacement
parts and accessories for the H
Specifications
WARNING: Do not use this product in a manner not specified in thi s instruction
manual.
S detector.
2
Table 1 lists specifications for the H
S detector.
2
Table 1: Specifications
Target Gas Hydrogen sulfide (H
S)
2
Area Classification Explosionproof for Class I, Groups B, C, and D
Temperature Code T6
Installation Category Installation Category 1. Signal level, special equipm ent or parts of
equipment, telecommunication, electronic, etc., with smaller
transient overvoltages than Installati on Category (Overvoltage
Category) II (ref. IEC 664).
Sampling Method Diffusion
Detection Range 0 to 100 PPM (parts per million)
H
S Detector Signal Output 0.3 mA at 0 ppm H2S nominal
2
2.5 mA at 100 ppm H
S nominal
2
Response Time 90% in 30 seconds
Accuracy ± 5% of reading or ± 2 ppm H
S (whichever is greater)
2
Operating Temperature -40°F to 104°F (-40°C to 40°C)
NOTE: The following symbol on the detector label is a caution to the user to refer to this
documentation for installation and operation instructions:
WARNING: When using the 65-2427RK-05, you must follow the instructions and
warnings in this manual to assure proper and safe opera tion of the
65-2427RK-05 and to minimize the risk of personal injury. Be sure to
maintain and periodically calibrate the 65-2427RK-05 as described in this
manual.
65-2427RK-05 H2S Detector • 1
Page 6
Description
This section describes the components of the 65-2427RK-05 H2S detector. The
65-2427RK-05 consis t s of the 65-24 23 RK-05 H
Terminal Block
Red
Black
S detector and junction box.
2
J-Box
Rubber
Spacer,
3X
H2S Detector
Figure 1: H
S Detector Component Location
2
2 • 65-2427RK-05 H2S Detector
Page 7
65-2423RK-05 H2S Detector
r
The 65-2423RK-05 H2S detector consists of the detector housing body, detector housing
cap, cap gasket, rubber boot, spacer, and the plug-in sensor.
Detector Housing Body
Cap Gasket
H2S Plug-inSensor
Spacer
Rubber Boo t
Detector
Housing Cap
Flame
Arresto
Guard
Figure 2: H
S Detector Component Location
2
Detector Housing Body, Housing Cap, & Cap Gasket
The detector housing body protects the sensing components within the housing. Use the
3/4” NPT mounting threads at the top of the housing to screw the H2S detector into the
bottom conduit hubs of the junction box. Use the removable cap near the bottom of the
housing to access the sensor for maintenance or replacement. The cap protects the sensor
from damage and includes a flame arrestor which contains any sparks which may occur
within the detector housing. A cap gasket seals the interface between the housing and cap.
A flame arrestor guard is permanently bonded to the cap.
Two wires extend from the top of the detector housing body. Use these wires to connect
the H
S detector to the junction box terminal strip. The housing includes a four-socket
2
pattern. This socket pattern accepts the sensor’s four pins to secure the sensor within the
detector housing. A pre-amplifier, located between the sockets and two interconnect
wires, conditions the sensor’s signal before the signal reaches the controller.
Rubber Boot and Spacer
A rubber boot and spacer are installed between the detector housing cap and the sensor.
They help ensure that the detector remains plugged into the detector housing body.
Plug-In Sensor
The sensor is secured within the sensor housing by four pins. Through a series of chemical
and electrical reactions, the sensor produces an electrical output that corresponds to the
detection range of the detector.
65-2427RK-05 H2S Detector • 3
Page 8
Installation
Junction Box
The junction box allows you to install the detector at a mounting site that is remote from a
controller, and it protects the detector wiring connections. Two conduit hubs allow you to
mount the detector to the junction box and connect the wiring from the detector to a
controller. Three spacers installed on the back of the junction box control the distance of
the junction box from a mounting surface and ensure that there is enough room to install a
calibration cup on the detector during calibration. The terminal block within the junction
box facilitates the wiring process. A cover on the front of the junction box allows access to
the interior of the junction box.
This section describes procedures to mount the H2S detector in the monitoring
environment and wire the detector to a controller.
Mounting the H2S Detector
1. Select a mounting site that is representative of the monitoring environment. Consider
the following when you select the mounting site.
• Select a site where the detector is not likely to be bumped or disturbed. Ma ke sur e
there is sufficient room to perform start-up, maintenance, and calibration
procedures.
• Select a site where the target gas is likely to be found first.
NOTE: If your application does not require a specific mounting site, mo unt the detector
at approximately breathing level.
4 • 65-2427RK-05 H2S Detector
Page 9
3.10
3/4 NPT
Female
.75
.38
3.65
8.25 MAX
Rubber
Spacers
3X
J-Box
H2S Detecto r
1-1/2- 20Thread
for Calibration Cup
Figure 3: Outline & Mounting Dimensions
2. At the monitoring site you select, hang or mount th e jun c tion box with the detector
facing down (see Figure 3).
Wiring the H2S Detector to a Controller
WARNING: Always verify that the power source is OFF bef ore you make wiring
connections.
1. Turn off the controller.
2. Turn off or unplug p ower to the controller.
3. Remove the junction box cover.
WARNING: To maintain the explosion proof classification of the H2S detector, a
conduit seal must be used within 18 inches of the junction box conduit hub
used for wiring to the controller.
65-2427RK-05 H2S Detector • 5
Page 10
4. Guide a two-conductor, shielded cable or two wires in conduit through an unused
conduit hub of the junction box. Use appropriate conduit fittings and construction
technique for the environmental and hazardous location rating of the junction box.
The junction box is rated NEMA 4X and Class 1, Division 1, Groups B, C, D.
5. Connect the two wires to the detector using the 2 point terminal block.
CAUTION: If using shielded cable, leave the drain wire insulated and disconne cted at the
detector. You will connect the opposite end of the cable’s drain wire at the controller.
6. Secure the junction box cover to the junction box.
7. Route the cable or wires leading from the H
S detector through one of the conduit
2
hubs at the controller housing. Use appropriate conduit fitt ings and construction
technique for the environmental rating of the controller. RKI controllers are typically
rated NEMA 4X.
CAUTION: Do not route power and detector wiring through the same conduit hub. The power
cable may disru pt the transmission of the detect or signal to the controller.
8. Connect the wires to the applicable controller terminal strip. See the controller
operator’ s manual and the controller’s detector head specification sheet.
Cable Shield
Controller Detector/Transmitter
Terminals, T ypical Designations
Controller Housing
+
S
Figure 4: Wiring the H
6 • 65-2427RK-05 H2S Detector
Terminal Block
Black
Red
H2S Detector
S Detector to a Controller
2
Page 11
Start Up
9. If using shielded cable, connect the cable’s drain wire to an available chassis ground at
the controller. RKI controllers typically have a ground stud that is a convenient
grounding location.
10. Reinstall the junction box cover.
This section describes procedures to start up the H2S detector and place the detector into
normal operation.
Introducing Incoming Power
1. Complete the installation procedures described earlier in this manual.
2. Verify that the power wiring to the controller is correct and secure. Refer to the
controller operator’s manual.
3. Turn on power to the controller.
4. Turn on the controller.
5. Verify that the controller is on and operating properly. Refer to the controller
operator’s ma nual.
CAUTION: Allow the detector to warm up for 5 minutes before you continue with the next
section, “Setting the Zero (Fresh Air) Reading”.
Setting the Zero (Fresh Air) Reading
WARNING: If the detector installation is explosion proof, do not remove the detector
housing cap or junction box cover while the circuits are energized unless the
area is determined to be non-hazardous. Keep the detector housing cap and
junction box cover tightly closed during operation.
CAUTION: If you suspect the presence of H2S in the monitoring en vironment, use the
calibration kit and a zero air calibration cylinder to introduce “fresh air” to the H
detector and verify an accurate zero setti n g. Se e “Cal ibration” on page 11 for
instructions to introduce zero air to the H2S detector.
1. Verify that the detector is in a fresh air environment (environment known to be free of
hydrogen sulfide, other toxic and combust ible gases, and of normal oxyge n content,
20.9%).
2. Verify a reading of 0 p pm H
If the display reading is 0 ppm H
operation. If the display reading is not 0 ppm H
S at the controller.
2
S, start up is complete. The detector is in normal
2
S, continue with step 3.
2
S
2
3. Perform a zeroing operation at the controller. See the contr oller operato r’s manual for
directions.
65-2427RK-05 H2S Detector • 7
Page 12
Maintenance
This section describes maintenance procedures. It includes preventive maintenance,
troubleshooting, and component replacement procedures.
Preventive Maintenance
This section describes a preventive maintenance schedule to ensure the optimum
performance of the H
Daily
S detector. It includes daily, monthly, and quarterly procedures.
2
Verify a display reading of 0 PPM H
S at the controller. Investigate significant changes in
2
the display reading.
Monthly
This procedure describes a test to verify that the H
S detector responds properly to
2
hydrogen sulfide. It describes a test using a fixed flow regulator with an on/off knob. RKI
Instruments, Inc. recommends using a 0.5 LPM (liters per minute) fixed flow regulat or.
NOTE: Performin g a response te st on the H2S detector may cause alarms. Be sure to put
the controller into its calibration program or disable external alarms before
performing this test.
Preparing for the response test
1. Place the controller into its calibration program or disable external alarms.
2. Verify that the controller display reading for the channel you are testing is 0.
If the display reading is not zero, set the zero reading of the detector as described in
the Start Up section of this manual, then continue this procedure.
WARNING: Do not remove the detector housing cap while the circuits are energized
unless the area is determined to be non-hazardous. Keep the detector
housing cap tightly closed duri ng operation.
3. Screw the calibration cup onto the bottom of the H
4. Screw the regulator into the calibration cylinder.
5. Use the calibration kit sample tubing to connect the regulator to the calibration cup.
Performing the response test
1. Turn the regulator’s on/off knob counterclockwise to open the regulator. Gas will
begin to flow.
2. Allow the gas to flow for two minutes, then verify that the reading is within ± 20% of
the cylinder gas concentration.
NOTE: If the reading is not within ± 20% of the correct response reading, calibrate the
detector as described in the Calibration section of this manual.
3. Turn the regulator’s on/off knob clockwise to close the regulator.
4. Unscrew the regulator from the calibration cylind er.
8 • 65-2427RK-05 H2S Detector
S detector.
2
Page 13
5. Unscrew the calibration cup from the H2S detector.
6. When the controller display reading falls below th e alarm setpoints, return the
controller to normal operation.
7. Store the components of the calibration kit in a safe place.
Quarterly
Calibrate the H
S detector as described in the Calibration section of this manual.
2
Troubleshooting
The troubleshooting guide describes symptoms, probable causes, and recommended
action for problems you may encounter with the H
NOTE: This troubleshooting guide describes detector problems only. See the controller
operator’s manual for problems you may encounte r with the controller.
Table 2: Troubleshooting the H
Condition Symptom(s) Probable Causes Recommended Action
Fail Condition Controller indicates a
fail condition.
• The detector wiring is
disconnected or
misconnected.
• The plug-in sensor is
not properly plugged
into the sockets in the
detector housing body.
• The detector’s zero
reading is low enough
to cause a fail
condition.
• The detector is
malfunctioning.
S detector.
2
S Detector
2
1. Verify that the detector wiring is
correct and secure.
2. Confirm that the plug-in sensor is
installed properl y.
3. Perform a zero adjustment. A full
calibration is recommended.
4. If the fail condition continues, replace
the plug-in sensor as described later
in this section.
5. If the fail condition continues, contact
RKI for further instruction.
Slow or No
Response/
Difficult or
Unable to
Calibrate
• Detector responds
slowly or does not
respond during
response test.
• Unable to accurately
set the zero or
response reading
during calibration.
• Detector requires
frequent calibration.
Note: Under “normal”
circumstances, the
detector requires
calibration once every 3
months.
Some applications
may require a more
frequent calibration
schedule.
• The calibration cylinder
is low, out-dated, or
defective.
• The flame arrestor in
the detector housing
cap is wet or clogged
with dirt or other
particulates.
• The calibration gas is
not an appr opriate
concentration.
• The detector is
malfunctioning.
1. Verify that the calibration cylinder
contains an adequate supply of a
fresh test sample.
2. Check the detector housing cap to
determine if the flame arrestor is wet
or dirty. Clean if necessary.
3. Verify that the calibration gas
concentration is appropriate for the
detector. Zero emission air (20.9%
oxygen) is normally used for a zero
adjustment if the environment is
suspect and 25 PPM H
is normally used for a response
adjustment.
4. If the calibration/response difficulties
continue, replace the plug-in sensor
as described later in this section.
5. If the calibration/response difficulties
continue, contact RKI for further
instruction.
65-2427RK-05 H2S Detector • 9
S in nitrogen
2
Page 14
Replacing Components of the H2S Detector
This section includes a procedure to replace the H2S sensor and the entire detector
assembly. In most cases, it is not necessary to replace the entire detector assembly.
Replacing the Plug-In H
S Sensor
2
CAUTION: The sensor contains electrolyte which is a dilute acid. Do not dis assemble the sens o r
when replacing it with a new one. If sensor electrolyte comes in co ntact with your
skin, wash affected area thoroughly with soap and water.
1. Turn off the controller.
2. Turn off or unplug p ower to the controller.
3. Unscrew the detector housing cap from the detector housing body. Make sure not to
lose the cap gasket.
4. Unplug an d remove the H
S sensor with the rubber boot and spacer attached.
2
5. Remove the rubber boot and spacer from the old sensor.
6. Ins tall the spacer and rubber boot onto the replacement sensor’s face.
7. Carefully plug the replacement sensor into the four-socket pattern that is located in
the detector housing.
8. Make sure the cap gasket is in place and screw the detector housing cap back onto the
detector housing body.
9. Turn on or plug in power to the controller.
10. Turn on the controller and place into normal operation.
CAUTION: Allow the r ep la cem ent sens or to w arm up for 5 m inu tes before you continue with the
next step.
11. Calibrate the replacement sensor as described in the Calibration section of this
manual.
Replacing the H
S Detector
2
NOTE: In most cases, it is only necessary to replace the H2S sensor.
1. Turn off the controller.
2. Turn off or unplug p ower to the controller.
3. Remove the junction box cover.
4. Disconnect the detector leads from the terminal block in the junction box. Note the
position of the color-coded leads as you remove them.
5. Unscrew the detector from the junction box hub.
6. Gu ide the detector leads of the replacement detector through the junction box hub
then screw the mounting threads of the detector into the hub.
7. Connect the detector leads to the terminal block the same way the old detector was
wired. See the controller operator’s manual and the controller’s detector head
specification sheet to verify the connections are correct.
10 • 65-2427RK-05 H2S Detector
Page 15
8. Reinstall the junction box cover.
9. Turn on or plug in power to the controller.
10. Turn on the controller and place into normal operation.
CAUTION: Allow the replacement detector to warm up for 5 minutes before y o u c o ntinue with
the next step.
11. Calibrate the replacement detector as described in the Calibration section of this
manual.
Calibration Frequency
Although there is no particular calibration frequency that is correct for all applications, a
calibration frequency of every 3 months is adequate for most H
Unless experience in a particular application dictates otherwise, RKI Instruments, Inc.
recommends a calibration frequency of every 3 months for the H
If an application is not very demanding, for example detection in a clean, temperature
controlled environment, and calibration adjustments a re minima l at calibration, then a
calibration frequency of every 6 months is adequate.
S detector applications.
2
S detector.
2
Calibration
If an application is very demanding, for example if the environment is not well controlled,
then more frequent calibration than every 3 months may be necessary.
This section describes how to calibrate the H2S detector. It includes procedures to prepar e
for calibration, set the zero reading, set the response reading, and return to normal
operation. It describes calibration using a calibration kit that includes a calibration cup,
calibration gas, sample tubing, and a fixed flow regulator with an on/off knob. RKI
Instruments, Inc. recommends using a 0.5 LPM (liters per minute) fixed flow regulat or.
Prepari ng for Ca libration
NOTE: Calibrating the H2S detector may cause alarms. Be sure to put the controller into
its calibration program or disable external alarms before calibrating.
WARNING: Do not remove the detector housing cap while the circuits are energized
unless the area is determined to be non-hazardous. Keep the detector
housing cap tightly closed duri ng operation.
1. Screw the calibration cup onto the bottom of the H
2. Screw the regulator into the zero air calibration cylinder.
S detector.
2
3. Use the calibration kit sample tubing to connect the fixed flow regulator to the
calibration cup.
4. Put the controller into its calibration program.
65-2427RK-05 H2S Detector • 11
Page 16
Setting the Zero Reading
NOTE If you can verify that the H2S detector is in a fresh air environment, you do not
need to apply zero air to the detector before adjusting the zero reading.
1. Follow the directions in the controller operator’s manual for setting the zero reading.
2. When the instructions call for applying z e ro air to the detector, turn the regulator’s
on/off knob counterclockwise to open it.
3. Allow the gas to flow for two minutes.
4. Set the zero reading according to the controller operator’s manual.
5. Turn the regulator’s on/off knob clockwise to close it.
6. Unscrew the regulator from the zero air calibration cylinder.
7. Leave the sample tubing connected to the regulator and the calibration cup.
NOTE: Depending on the size of your zero air cylinder, it is possible that you will have a
different regulator for the zero air cylinder and the H
to fit the H2S calibration gas cylinder, change the regulator.
S gas cylinder. If necessary
2
Setting the Response Reading
1. Screw the regulator into the calibration gas cylinder.
2. Follow the directions in the controller operator’s manual for setting the response
reading (span).
3. When the directions call for exposing the detector to gas, turn the regulator’s on/off
knob counterclockwise to open it.
4. Allow gas to flow for 2 min utes.
5. Set the response reading according to the controller operator’s manual.
6. After setting the response reading, turn the regulator’s on/off knob clockwise to close
it.
7. Unscrew the regulator from the cylinder.
8. Remove the calibration cup from the detector.
NOTE: For convenience, leave regulator and calibration cup connected by the sample
tubing.
Returning to Normal Operation
1. Allow about 45 seconds for the gas reading to decrease below the alarm points and
then return the controller to normal operation.
NOTE: If you do not allow the gas reading to decrease below the alarm points, then
unwanted alarms may occur.
2. Verify that the controller display reading decreases and stabilizes a t 0 ppm H
3. Store the components of the calibration kit in a safe and convenient place.
12 • 65-2427RK-05 H2S Detector
S.
2
Page 17
Parts List
Table 5 lists replacement parts and accessories for the H2S detector.
Table 3: Parts List
Part Number Description
06-1248RK Sample tubing (order by the foot)
07-0033RK Detector housing cap gasket
07-0203RK Rubber retaining boot
14-2101RK Spacer between sensor and rubber boot
18-0400RK-01 Junction box with rubber spacers
65-2423RK-05 H
65-2427RK-05 H
71-0227RK 65-2427RK-05 H
81-0064RK-04 Calibrat ion cylinder, 25 PPM H
S detector (with plug-in sensor)
2
S detector/j-box, CSA classified
2
S Detector Operator’s Manual (this document)
2
S in nitrogen, 34 liter aluminum
2
81-0076RK Zero air calibration cylinder, 17 liter steel
81-0076RK-01 Zero air calibration cylinder, 34 liter steel
81-0076RK -03 Zero air calibration cylinder, 103 liter steel
81-0151RK-02 Calibrat ion cylinder, 25 PPM H
S in nitrogen, 58 liter aluminum
2
81-1050RK Regulator with gauge and knob, 0 .5 L PM, for 17 liter and 34 liter
steel calibration cylinders
81-1051RK Regulator with gauge and knob, 0.5 LPM , for 34AL/58/103 liter
calibration cylinders
81-1117RK Calibration cup
ES-1537-H2S H
S replacement sensor
2
65-2427RK-05 H2S Detector • 13
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