RKI Instruments 65-2427-05-01 Manuel utilisateur

RKI Instruments, Inc.

www.rkiinstruments.com

65-2427-05-01

Hydrogen Sulfide Detector

Operator’s Manual

Part Number: 71-0454

Revision: 0

Released: 6/15/20

2 • 65-2427-05-01 H2S Detector

WARNING

Read and understand this instruction manual before operating instru-

ment. 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. Typical calibration frequen-

cies for most applications are between 3 and 6 months, but can be

required more often or less often based on your usage.

65-2427-05-01 H2S Detector • 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 from date of shipment from

RKI Instruments, Inc. Any parts found defective within that 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 service, and which must be

cleaned, repaired, or replaced on a routine basis. Examples of such items are:

Warranty 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, and we are not responsible for removal or replacement costs, local

repair costs, transportation costs, or contingent expenses incurred without our prior approval.

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.

This warranty covers instruments and parts sold to users by authorized distributors, dealers,

and representatives as appointed by RKI Instruments, Inc.

We do not assume indemnification for any accident or damage caused by the operation of this

gas monitor, and our warranty is limited to the replacement of parts or our complete goods.

a) Absorbent cartridges d) Batteries

b) Pump diaphragms and valves e) Filter elements

c) Fuses

4 • 65-2427-05-01 H2S Detector

Table of Contents

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

H2S Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Junction Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Mounting the H2S Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Wiring the H2S Detector to a Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Introducing Incoming Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Setting the Zero Signal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Replacing Components of the H2S Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Preparing for Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Setting the Zero Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Setting the Span Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Returning to Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

65-2427-05-01 H2S Detector • 5

Overview

This manual describes the 65-2427-05-01 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 H2S detector.

Specifications

WARNING: Do not use this product in a manner not specified in this instruction manual.

Table 1 lists specifications for the H2S 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 65-2427-05-01, you must follow the instructions and warnings

in this manual to assure proper and safe operation of the 65-2427-05-01 and to

minimize the risk of personal injury. Be sure to maintain and periodically

calibrate the 65-2427-05-01 as described in this manual.

Table 1: Specifications

Target Gas Hydrogen sulfide (H2S)

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

Detection Range 0 to 100 ppm (parts per million)

H2S Detector Signal Output 0.3 mA at 0 ppm H2S nominal

2.5 mA at 100 ppm H2S nominal

Response Time 90% in 30 seconds

Accuracy ± 5% of reading or ± 2 ppm H2S (whichever is greater)

Operating Temperature -40°F to 104°F (-40°C to 40°C)

6 • 65-2427-05-01 H2S Detector

Description

This section describes the components of the 65-2427-05-01 H2S detector. The 65-2427-05-

01 consists of the 65-2428-01 H2S detector and junction box.

Figure 1: H2S Detector Component Location

Terminal Block

Rubber

Spacer,

H2S Detector

Red

Black

J-Box

65-2427-05-01 H2S Detector • 7

65-2428-01 H2S Detector

The 65-2428-01 H2S detector consists of the detector housing body, detector housing cap, cap

gasket, rubber boot, spacer, and the plug-in sensor.

Figure 2: H2S Detector Component Location

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 plug-in sensor for maintenance or replacement. The cap protects the plug-in 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

H2S detector to the junction box terminal strip. The housing includes a four-socket pattern.

This socket pattern accepts the plug-in 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 sensor 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

Spacer

Rubber Boot

H2S Plug-inSensor

Flame

Arrestor

Guard

Detector

Housing Cap

Detector Housing Body

Cap Gasket

8 • 65-2427-05-01 H2S Detector

detection range of the detector. The plug-in sensor used for this detector is resistant to

degradation caused by frequent exposure to low levels of H2S or occasional exposure to high

levels of H2S.

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.

Installation

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. Make sure

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, mount the detector at

approximately breathing level.

65-2427-05-01 H2S Detector • 9

Figure 3: Outline & Mounting Dimensions

2. At the monitoring site you select, hang or mount the junction box with the detector facing

down (see Figure 3).

.38

.75

3.10

Rubber

Spacers

3/4 NPT

Female

3.65

1-1/2 - 20 Thread for Calibration Cup

J-Box

H2S Detector

8.45 MAX

10 • 65-2427-05-01 H2S Detector

Wiring the H2S Detector to a Controller

WARNING: Always verify that the power source is OFF before you make wiring

connections.

1. Turn off the controller.

2. Turn off or unplug power 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 2 inches of the junction box conduit hub used for

wiring to the controller.

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 disconnected 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 H2S detector through one of the conduit hubs at

the controller housing. Use appropriate conduit fittings 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 disrupt the transmission of the detector signal to the controller.

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