RKI Instruments 65-2443-100 Bedienungsanleitung

RKI Instruments, Inc.

www.rkiinstruments.com

65-2443-XX

PPM Hydrogen Transmitter

Operator’s Manual

Part Number: 71-0542

Revision: 0

Released: 5/8/23

2• 65-2443-XX PPM Hydrogen Transmitter Operator’s Manual

WARNING

Read and understand this instruction manual before operating

instrument. Improper use of the gas monitor could result in bodily

harm or death.

Periodic calibration and maintenance of the gas monitor is essential

for proper operation and correct readings. Please calibrate and

maintain this instrument regularly! Frequency of calibration depends

upon the type of use you have and the sensor types. For most

applications, typical calibration frequencies are between 3 and 6

months but can be more often or less often based on your usage.

65-2443-XX PPM Hydrogen Transmitter Operator’s Manual • 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 the 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. Parts must be returned to RKI Instruments, Inc. for repair

or replacement. 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:

• Pump diaphragms and valves

•Fuses

•Batteries

• Filter elements

Warranty is voided by abuse including mechanical damage, alteration, rough handling, or repair

procedures not in accordance with instruction manual. This warranty indicates the full extend 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 APARTI CULAR PURPOSE. INNO

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 only 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. Warranty

covers parts and labor performed at RKI Instruments, Inc. only, and does not cover field labor or

shipment of parts back to RKI.

4• 65-2443-XX PPM Hydrogen Transmitter Operator’s Manual

Table of Contents

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

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

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

PPM Hydrogen Detector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Amplifier. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

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

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Mounting the PPM Hydrogen Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Wiring the PPM Hydrogen Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

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

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

Transmitter Burn-In Period. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

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

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

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

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

Replacing Components of the PPM Hydrogen Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Calibration Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Calibration Kit Humidifier Tube. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Preparing for Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Setting the Zero Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Setting the Span Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Setting the Linearization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Returning to Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

65-2443-XX PPM Hydrogen Transmitter Operator’s Manual Overview • 5

Overview

This manual describes the 65-2443-XX ppm hydrogen transmitter. This manual also describes

how to install, start up, configure, maintain, and calibrate the transmitter 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 transmitter.

Specifications

Table 1 lists specifications for the ppm hydrogen transmitter.

WARNING: When using the 65-2443-XX, you must follow the instructions and warnings in

this manual to assure proper and safe operation of the 65-2443-XX and to

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

calibrate the 65-2443-XX as described in this manual.

Table 1: Specifications

Target Gas Hydrogen (H2)

Detection Range

• 65-2443-100: 0 - 100 ppm

• 65-2443-500: 0 - 500 ppm

• 65-2443-1000: 0 - 1,000 ppm

• 65-2443-2000: 0 - 2,000 ppm

Area Classification Explosion-proof for Class I, Groups B, C, and D

Sampling Method Diffusion

Input Power 10 - 30 VDC

Signal Output

4 to 20 mA with impedance maximums listed

below:

• 12 VDC input: 500 Ohms

• 24 VDC input: 1000 Ohms

Response Time 90% in 45 seconds

6• Description 65-2443-XX PPM Hydrogen Transmitter Operator’s Manual

Description

This section describes the ppm hydrogen transmitter’s components. It is a 4 to 20 mA type

detector head. It consists of the ppm hydrogen detector, amplifier, and junction box.

Figure 1: Component Location

Amplifier

J-Box

Hydrogen Detector

LINEAR

SPAN

Reducing Bushing,

3/4 NPT to1/2 NPT

DETECTOR PWR / SIG

SWBR

65-2443-XX PPM Hydrogen Transmitter Operator’s Manual Description • 7

PPM Hydrogen Detector

The ppm hydrogen detector is a MOS type (metal oxide semiconductor) detector packaged in a 1/

2 NPT nipple with a sintered metal flame arrestor on one end allowing ambient air to diffuse into

the detector. The flame arrestor also contains any sparks which may occur within the detector. The

1/2 NPT mounting threads at the top of the detector allow you to mount it into the bottom conduit

hub of the junction box. A rainshield screws onto the bottom of the detector (flame arrestor end).

The rainshield helps protect the detector from rain and debris in the monitoring environment.

Three color-coded leads extend from the top of the detector. The leads allow you to connect the

detector to the amplifier.

The detector has a built in molecular sieve that only allows hydrogen to diffuse into the detector.

The output of the detector is non-linear and is linearized by the amplifier (see below).

Amplifier

The amplifier converts the non-linear electrical output from the detector to a linear 4 to 20 mA

signal that corresponds to the detection range and transmits the signal to a gas monitoring

controller. The amplifier includes the terminal strips, span pot, linearizing pot, and test points.

Figure 2: Amplifier Component Location

Controller Terminal Strip

The controller terminal strip is a three position plug-in style terminal strip located near the top of

the amplifier. Use the controller terminal strip to wire the transmitter to a controller.

+ Test Point, Red

DETECTOR

- Test Point, Black

Mounting Screw

w/ flat and lock washer

SPAN

PWR / SIG

JP2 Jumper

JP1 Jumper

LINEAR

Detector Terminal Strip

Span Pot

Controller Terminal Strip

Linearizing Pot

8• Description 65-2443-XX PPM Hydrogen Transmitter Operator’s Manual

Detector Terminal Strip

The detector terminal strip is a three position plug-in style terminal strip located below the

controller terminal strip. Use the detector terminal strip to connect the detector to the amplifier.

NOTE: The detector is factory-wired to the detector terminal strip. See page 10 for all wiring

procedures related to the transmitter.

Span Pot

The span pot is located to the left of the detector terminal strip (see Figure 2). Use a small flat

blade screwdriver to turn the span pot’s adjustment screw and adjust the amplifier’s full scale

response output during the calibration procedure.

Linearizing Pot

The linearizing pot (labeled LINEAR) is located in the bottom left corner of the amplifier (see

Figure 2). Use a small flat blade screwdriver to turn the linearizing pot’s adjustment screw while

applying mid-scale gas to linearize the transmitter’s output during the calibration procedure.

Test Points

The test points are on the right side of the amplifier (see Figure 2). The test points produce a 100

to 500 mV output that corresponds to the transmitter’s 4 to 20 mA output. Use the test points and

a voltmeter to measure the amplifier’s output during the start-up and calibration procedures. The

black test point on the bottom is the negative (-) test point and the red test point on the top is the

positive (+) test point.

JP1 and JP2 Jumpers

The JP1 and JP2 jumpers are both shipped from the factory. For the 0 - 100 ppm range, JP1 will

only be installed on one pin and JP2 will be installed on either one or both pins. For the 0 - 500

ppm, 0 - 1,000 ppm, and 0 - 2,000 ppm ranges, JP1 will be installed on either one or both pins and

JP2 will be installed on both pins. When installing a new sensor, the jumper configuration may

need to be adjusted (see page 17).

Junction Box

Use the junction box to install the transmitter at a mounting site that is remote from the controller.

The junction box also protects the amplifier and wiring connections made to the amplifier. Use the

top 3/4 NPT conduit hub to connect wiring from the amplifier to the controller. Use the cover on

the front of the junction box to access the interior of the junction box. The detector and amplifier

are factory installed in the junction box.

65-2443-XX PPM Hydrogen Transmitter Operator’s Manual Installation • 9

Installation

This section describes procedures to mount the ppm hydrogen transmitter in the monitoring

environment and wire the transmitter to a controller.

Mounting the PPM Hydrogen Transmitter

Figure 3: Mounting the PPM Hydrogen Transmitter

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 transmitter 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. For hydrogen, which is lighter

than air, mount the transmitter near the ceiling or where hydrogen is most likely to

accumulate.

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

down (see Figure 3).

.38

.75

2.70

JBox

Rubber

Spacers,

3/4 NPT Female

3.65

Hydrogen

Detector

3/4 x 1/2 Reducing

Bushing

7.5 max

10 • Installation 65-2443-XX PPM Hydrogen Transmitter Operator’s Manual

Wiring the PPM Hydrogen Transmitter

WARNING: Always verify that the power to the controller is off before you make wiring

connections.

1. Turn off power to the controller.

2. Place the controller’s power switch in the OFF position.

3. Remove the junction box cover.

4. The detector leads are factory wired. Verify that the detector leads are wired to the amplifier’s

detector terminal strip as shown in Figure 4.

5. To gain access to a plug-in terminal strip for wiring, pull it out of its socket by grasping the

terminal strip and pulling. The detector strip is keyed so that the controller and detector

terminal strips cannot be reversed inadvertently.

6. Guide a three-conductor, shielded cable or three wires in conduit through the top conduit hub

of the junction box.

7. Pull out the controller terminal strip, and connect the three wires to the terminal strip as

follows (see Figure 4).

• Connect the positive wire to the PWR/SIG “+” terminal.

• Connect the signal wire to the PWR/SIG “S” terminal.

• Connect the negative wire to the PWR/SIG “-” terminal.

CAUTION: If shielded cable is used, leave the cable shield’s drain wire

disconnected and insulated at the transmitter. You will connect the

opposite end of the cable’s drain wire to the controller’s chassis (earth)

ground.

8. Reinstall the controller terminal strip into its socket.

9. Secure the junction box cover to the junction box.

10. Route the cable or wires leading from the ppm hydrogen transmitter through one of the

conduit hubs at the controller housing.

CAUTION: Do not route power and transmitter wiring through the same controller

conduit hub. The power cable may disrupt the transmission of the

transmitter signal to the controller.

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