65-2428 H
2
S Detector • 1
Overview
This manual describes the 65-2428 hydrogen sulfide (H
2
S) 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
2
S detector.
Specifications
WARNING: Do not use this product in a manner not specified in this instruction
manual.
Table 1 lists specifications for the H
2
S detector.
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 65-2428, you must follow the 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.
Table 1: Specifications
Target Gas
Hydrogen sulfide (H
2
S)
Area Classification*
Explosionproof for Class I, Groups B, C, and D
Temperature Code
T6
Installation Category
Installation Category 1. Signal level, special equipment or parts of
equipment, telecommunication, electronic, etc., with smaller
transient overvoltages than Installation Category (Overvoltage
Category) II (ref. IEC 664).
Sampling Method
Diffusion
H2S Detector Signal Output
0.3 mA at 0 ppm H2S nominal
2.5 mA at 100 ppm H2S nominal
Detection Range
0 to 100 PPM (parts per million)
Accuracy
± 5% of reading or ± 2 ppm H
2
S (whichever is greater)
Response Time
90% in 30 seconds
Operating Temperature
-40°F to 104°F (-40°C to 40°C)
*
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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