RKI Instruments 65-2340RKSS Bedienungsanleitung

RKI Instruments, Inc.

www.rkiinstruments.com

65-2340RKSS

Toxic Gas Transmitter

Operator’s Manual

Part Number: 71-0302RK

Revision: 0

Released: 5/16/17

65-2340RKSS Toxic Gas Transmitter

WARNING

Read and understand this instruction manual before operating

detector. 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 frequencies for most applications are between

3 and 6 months, but can be required more often or less often

based on your usage.

65-2340RKSS Toxic Gas Transmitter

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 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 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

65-2340RKSS Toxic Gas Transmitter

Table of Contents

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Toxic Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Junction Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Mounting the Toxic Gas Transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Wiring the Toxic Gas Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Startup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Introducing Incoming Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Setting the Zero Signal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Replacing Components of the Toxic Gas Transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Calibration Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Preparing for Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Setting the Zero Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Setting the Response Reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Returning to Normal Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

65-2340RKSS Toxic Gas Transmitter • 1

Overview

This manual describes the 65-2340RKSS toxic gas transmitter. This manual also describes

how to install, start up, maintain, and calibrate the toxic gas transmitter when used with a

gas monitoring controller. A parts list at the end of this manuallists replacement parts and

accessories for the toxic gas transmitter.

The 65-2340RKSS toxic gas transmitter can be used for various target gases which are

listed in Table 1 below. For a particular target gas, the part number of the toxic transmitter

will be of the format 65-2340RKSS-XXX. For example, 65-2340RKSS-NH3 is for ammonia

(NH3) detection.

Specifications

Table 1 lists specifications for the toxic gas transmitter.

WARNING: When using the 65-2340RKSS, you must follow the instructions and

warnings in this manual to assure proper and safe operation of the

65-2340RKSS and to minimize the risk of personal injury. Be sure to

maintain and periodically calibrate the 65-2340RKSS as described in this

manual.

Table 1: Specifications

Target Gas 65-2340RKSS-ASH3: Arsine (AsH3)

65-2340RKSS-CL2: Chlorine (Cl2)

65-2340RKSS-CL-10: Chlorine (Cl2)

65-2340RKSS-HCN: Hydrogen Cyanide (HCN)

65-2340RKSS-NH3: Ammonia (NH3)

65-2340RKSS-SO2: Sulphur Dioxide (SO2)

65-2340RKSS-PH3: Phosphine (PH3)

Sampling Method Diffusion

Detection Range AsH3: 0 - 1.50 ppm

Cl2: 0 - 3.00 ppm

Cl2: 0 - 10.0 ppm

HCN: 0 - 15.0 ppm

NH3: 0 - 75.0 ppm

SO2: 0 - 6.00 ppm

PH3: 0 - 1.00 ppm

Accuracy ± 10% of reading or ± 5% of full scale (whichever is greater)

Signal Output 4 to 20 mA

Response Time • Cl2and NH3: T90 in 90 seconds

• All others: T90 in 45 seconds

Operating Temperature &

Humidity • 14°F to 104°F (-10°C to 40°C)

• 20% to 90% Relative Humidity

2 • 65-2340RKSS Toxic Gas Transmitter

Description

This section describes the components of the toxic gas transmitter. The toxic gas

transmitter is a 4 - 20 mA type detector head. It consists of the toxic detector, amplifier,

and junction box.

Figure 1: Toxic Transmitter Component Location

TOXIC OXY

ZERO

SIG /P W R

Span Pot

Zero Pot

SPAN

Black - Test Point

Red + Test Point

J-Box

Detector TerminalStrip

Mounting Screw

Controller TerminalStrip

Amplifier

Factory Adjust Pot

Toxic Detector

65-2340RKSS Toxic Gas Transmitter • 3

Toxic Detector

The toxic detector consists of the detector housing body, detector housing cap,

splashguard, cap gasket, and the plug-in sensor.

Figure 2: Toxic Detector Component Location

Detector Housing Body

The detector housing body protects the electronic components within the housing. Use the

mounting threads at the top of the housing to screw the toxic detector into the 3/4” NPT

hub on the bottom of the junction box. Two wires extend from the top of the detector

housing body. Use these wires to connect the toxic detector to the amplifier. One of the

wires is black and one of the wires is color coded depending on the detector type. See

Figure 4 on page 7 for the color code assignments.

The housing body includes a 12 position connector at the bottom of the housing body. The

plug-in sensor mates to this connector. A pre-amplifier located between the connector and

the two interconnect wires conditions the sensor’s signal before the signal reaches the

controller. Each plug-in sensor type (Cl2for example) requires a different pre-amplifier, so

there is a different detector housing body for each gas type.

Housing Cap, Cap Gasket, & Splashguard

The housing cap screws onto the detector housing. It retains the plug-in sensor and

protects it from damage. A removable splashguard is screwed onto the detector cap to

protect the sensor from impact damage, direct water spray, and splashing. Unscrew the

detector cap to access the sensor for maintenance or replacement. A cap gasket seals the

interface between the housing and cap.

Plug-In Sensor

The plug-in sensor is secured in the detector assembly by the housing cap. There is a

different sensor for each target gas. Through a series of chemical and electrical reactions,

the sensor produces an electrical output that corresponds to the detection range of the

sensor.

Amplifier

The amplifier converts the electrical output from the detector to a 4 to 20 mA signal that

corresponds to the detection range and transmits the signal to a gas monitoring controller.

Splash Guard

(removable)

Sensor

(different for each detector type)

Detector Housing

Cap

Cap Gasket

Detector Housing Body

(different for each detector type)

4 • 65-2340RKSS Toxic Gas Transmitter

A foam gasket that orients the amplifier and keeps it from rotating is installed on the

bottom of the amplifier. The amplifier includes the detector terminal strip, controller

terminal strip, zero pot, span pot, and test points (see Figure 1).

Controller Terminal Strip

The controller terminal strip is a two position plug-in style terminal strip located at the

top edge of the amplifier. Use the controller terminal strip to wire the transmitter to a

controller.

Detector Terminal Strip

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

controller terminal strip. Two of the positions are for use with an oxygen sensor and are

not used in the toxic gas transmitter. Use the two detector terminal strip positions that are

labelled “TOXIC” to connect the detector to the amplifier.

NOTE: The detector is factory-wired to the detector terminal strip. See “Wiring the Toxic

Gas Transmitter to a Controller” on page 6 for all wiring procedures related to

the transmitter.

Zero Pot

The zero pot is located in the upper left corner of the amplifier (see Figure 1). Use a small

flat blade screwdriver to turn the zero pot’s adjustment screw and adjust the amplifier’s

zero (fresh air) output during the start-up and calibration procedures. Turn the adjust-

ment screw clockwise to increase the zero output and counterclockwise to decrease the

zero output.

Span Pot

The span pot is located to the right of the zero pot (see Figure 1). Use a small flat blade

screwdriver to turn the span pot’s adjustment screw and adjust the amplifier’s gas

response output during the calibration procedure. Turn the adjustment screw clockwise to

increase the span output and counterclockwise to decrease the span output.

CAUTION: The amplifier includes an additional potentiometer. It is factory-set. Do not adjust it.

Test Points

The test points are on the left side of the amplifier (see Figure 1). The test points produce a

100 mV 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 in the lower left corner is the negative (-) test

point and the red test point below the zero pot is the positive (+) test point.

Junction Box

The stainless steel, corrosion resistant 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. An O-ring seals the interface between

the junction box cover and the junction box base.

A cover on the front of the junction box allows access to the interior of the junction box. A

locking set screw on the junction box cover allows you to secure the junction box cover

and prevent it from being removed.

65-2340RKSS Toxic Gas Transmitter • 5

Installation

This section describes procedures to mount the toxic gas transmitter in the monitoring

environment and wire the transmitter to a controller.

Mounting the Toxic Gas 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.

Figure 3: Mounting the Toxic Gas Transmitter

Text Oriented

This Way

3.15

2.40 3/4 NPT

Conduit Hub

.20 Dia. x .45

Slot, 2X

Toxic

Detector

Junction

Box

10.00Max

1.10

3.66

6 • 65-2340RKSS Toxic Gas Transmitter

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

facing down (see Figure 3).

Wiring the Toxic Gas Transmitter to a Controller

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

connections.

1. Turn off the controller.

2. Turn off power to the controller.

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 two-conductor, shielded cable or two wires in conduit through the top

conduit hub of the junction box.

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

as follows (see Figure 4).

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

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

11. Connect the wires to the applicable detector/transmitter terminal strip at the

controller as shown in Figure 4.

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