RKI Instruments 65-2428 User manual
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Part Number: 71-0344
Revision: 0
Released: 6/15/20
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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 APARTICULAR 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.
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WARNING: Do not use this product in a manner not specified in this instruction manual.
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WARNING: When using the 65-2428, you must followthe instructions and warnings in this
manual to assure proper and safe operation of the 65-2428 and to minimize the
risk of personal injury. Be sure to maintain and periodically calibrate the 65-
2428 as described in this manual.
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* The area classification only applies if the detector is installed using a junction box with an
internal volume less than or equal to 69 cubic inches and rated explosion proof for Class I,
Groups B, C, and D. The detector is not explosion proof if it is installed in a non-explosion
proof enclosure, such as in a conduit hub of a controller like the Beacon 200 or Beacon 800.
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Spacer
Rubber Boot
H2S Plug-inSensor
Flame
Arrestor
Guard
Detector
Housing Cap
Detector Housing Body
Cap Gasket
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CAUTION:Mount the H2S detector with the detector facing down (see Figure 2).
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Shrink Tubing
3/4 NPT
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WARNING: Always verify that the power source is OFF before you make wiring
connections.
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WARNING: To maintain the explosion proof classification of the H2S detector/junction box
combination, a conduit seal must be used within 2 inches of the junction box
conduit hub used for wiring to the controller.
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CAUTION:If using shielded cable, leave the drain wire insulated and disconnected at the
detector. You will connect the opposite end of the cable’s drain wire at the
controller.
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CAUTION:Do not route power and detector wiring through the same conduit hub. The
power cable may disrupt the transmission of the detector signal to the
controller.
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Controller H2S Detector Terminals
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CAUTION:Allow the detector to warm up for 5 minutes before you continue with the next
section, “Setting the Zero Signal”.
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WARNING: If the detector installation is explosion proof, do not remove the sensor cap or
junction box cover while the circuits are energized unless the area is
determined to be non-hazardous. Keep the sensor cap and junction box cover
tightly closed during operation.
CAUTION: If you suspect the presence of the target gas in the monitoring environment,
use the calibration kit and the zero air calibration cylinder to introduce “fresh
air” to the sensor and verify an accurate zero setting.
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Fail Condition
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Slow or No Response/Difficult or Unable to Calibrate
Symptoms
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Replacing the Sensor
CAUTION:The sensor contains electrolyte which is a dilute acid. Do not disassemble the
sensor when replacing it with a new one. If sensor electrolyte comes in contact
with your skin, wash affected area thoroughly with soap and water.
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WARNING: The H2S sensor will not operate properly if the wire jumper is not removed.
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CAUTION:Allow the replacement sensor to warm up for 5 minutes before you continue with
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Replacing the H2S Detector
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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
65-2428 H2S replacement detector assembly (includes sensor)
71-0344 65-2428 H2S Detector Operator’s Manual (this document)
81-0076RK Zero air calibration cylinder, 17 liter
81-0076RK-01 Zero air calibration cylinder, 34 liter steel
81-0076RK-03 Zero air calibration cylinder, 103 liter
81-0151RK-02 Calibration gas cylinder, 25 ppm H2S in nitrogen, 58 liter aluminum
81-0151RK-04 Calibration cylinder (25 ppm H2S in nitrogen; 34 liter aluminum)
81-1050RK Regulator with gauge and knob, 0.5 LPM, for 17 liter and 34 liter
steel calibration cylinders (cylinders with external threads)
81-1051RK Regulator with gauge and knob, 0.5 LPM, for 34 liter aluminum, 58
liter, and 103 liter cylinders (cylinders with internal thread)
81-1117RK Calibration cup
ES-1537-H2S H2S replacement sensor
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