RKI Instruments 65-2432RK-05 Bedienungsanleitung

www.rkiinstruments.com

65-2432RK-05

Carbon Monoxide Transmitter

Operator’s Manual

Part Number: 71-0113RK

Revision: C

Released: 7/6/20

2 • 65-2432RK-05 CO Transmitter

WARNING

Read and understand this instruction manual before operating detec-

tor. 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.

65-2432RK-05 CO Transmitter • 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 • 65-2432RK-05 CO Transmitter

Table of Contents

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

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

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

CO Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

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

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

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

Mounting the CO Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Wiring the CO Transmitter 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 CO Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Calibration Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

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

Setting the Zero Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Setting the Response Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

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

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

65-2432RK-05 CO Transmitter • 5

Overview

This manual describes the carbon monoxide (CO) transmitter. This manual also describes how

to install, start up, maintain, and calibrate the transmitter. A parts list at the end of this manual

lists replacement parts and accessories for the CO transmitter.

Specifications

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

Table 1 lists specifications for the CO transmitter.

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 65-2432RK-05, you must follow the instructions and warnings

in this manual to assure proper and safe operation of the 65-2432RK-05 and to

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

calibrate the 65-2432RK-05 as described in this manual.

Table 1: Specifications

Target Gas Carbon Monoxide (CO)

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).

Input Voltage 11 VDC - 30 VDC

Sampling Method Diffusion

Signal Output 4 to 20 mA

Detection Range 0 to 300 PPM (parts per million)

CO Detector Signal Output 0.3 mA at 0 ppm CO nominal

2.5 mA at 300 ppm CO nominal

Response Time 90% in 30 seconds

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

Operating Temperature 23°F to 104°F (-5°C to 40°C)

6 • 65-2432RK-05 CO Transmitter

Description

This section describes the components of the CO transmitter. The transmitter consists of the

CO detector, amplifier, and junction box.

Figure 1: CO Transmitter Component Location

CO Detector

The CO detector includes the detector housing and sensor.

Detector Housing

The detector housing protects the sensing components within the housing. Use the mounting

threads at the top of the housing to screw the CO detector into the bottom conduit hub of the

junction box. Use the removable cap near the bottom of the housing to access the sensor for

maintenance or replacement. The cap protects the 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.

3/4" NPT Conduit Opening

For Wire Entry

TOXIC

ZERO

SPAN

Not

Used

4/20

24V

POWER/SIG

OXY

SENSOR

-TP

TOXIC

RD BK

OXYGEN

Interconnect Terminal

Strip

Test Point (+)

Amplifier

Securing Screw (2X)

Detector

Housing

Detector Housing

Cap

Flame Arrestor

Guard

Carbon Monoxide

Detector

Test Point (-)

Factory Set

Potentiometer

Zero

Potentiometer

Span

Potentiometer

Jumper Block

Installed On Toxic

Select Header

Detector Terminal

Strip

65-2432RK-05 CO Transmitter • 7

Two wires extend from the top of the detector housing. Use these wires to connect the CO

detector to the amplifier. The housing includes a four-socket pattern. This socket pattern

accepts the 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 amplifier.

Sensor

The sensor is secured within the sensor housing by the four pins. Through a series of chemical

and electrical reactions, the sensor produces an electrical output that is proportional to the

detector range of the transmitter.

Charcoal Filter

The disc-shaped charcoal filter is secured to face of the CO sensor with a rubber boot. The

charcoal filter prevents interference gases (hydrogen sulfide [H2S] and certain hydrocarbons)

from producing false CO readings.

Amplifier

The amplifier converts the electrical output from the sensor to a 4 to 20 mA signal (that is

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

The amplifier includes the amplifier type selector, detector terminal strip, interconnect

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

Amplifier Type Selector

The amplifier type selector is near the bottom left corner of the amplifier. It is to the left of the

detector terminal strip and below the span pot.

The amplifier included with the CO transmitter is designed for use with RKI’s toxic gas and

oxygen transmitters. The amplifier type selector determines for which transmitter the

amplifier is intended. For CO transmitters, a jumper block is installed over the TOXIC

selector (see Figure 1).

Detector Terminal Strip

The detector terminal strip is the four-point terminal strip near the bottom of the amplifier.

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

NOTE: The CO detector is factory-wired to the amplifier. See the Installation section of this

manual for all wiring procedures related to the transmitter.

Interconnect Terminal Strip

The interconnect terminal strip is the four-point terminal strip near the top of the amplifier.

Use the interconnect terminal strip to connect the amplifier to a controller.

Span Pot

The span pot is on the left side of the amplifier. Of the three potentiometers, the span pot is

bottom most. Use the span pot to adjust the transmitter’s response output during the

calibration procedure.

8 • 65-2432RK-05 CO Transmitter

Zero Pot

The zero pot is above the span pot. Use the zero pot to adjust the transmitter’s target gas-free

output during the start-up and calibration procedures.

CAUTION: The third potentiometer is factory-set. Do not adjust it.

Test Points

The test points (labeled TP- and TP+) are on the left and right side of the interconnect

terminal strip. The test points produce a 100 to 500 mV output that is proportional to the

transmitter’s 4 to 20 mA output. Use the test points and a voltmeter to measure the

transmitter’s output during the start-up and calibration procedures.

Junction Box

Use the junction box to install the CO 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 two 3/4 in. conduit hubs to mount the detector to the junction box (bottom

hub) and connect wiring from the amplifier to the controller (top hub).

NOTE: The CO detector and amplifier are factory-mounted to the junction box.

Use the junction box’s two mounting holes to mount the CO transmitter to a vertical surface at

the monitoring site. Use the cover on the front of the junction box to access the interior of the

junction box.

Installation

This section describes procedures to mount the CO transmitter in the monitoring environment

and wire the transmitter to a controller.

Mounting the CO 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.

NOTE: If your application does not require a specific mounting site, mount the transmitter at

approximately breathing level.

65-2432RK-05 CO Transmitter • 9

Figure 2: Mounting the CO Transmitter

If the CO detector is mounted to the junction box, skip to step 5. If not, continue with step 2.

NOTE: The CO detector is normally provided with a Killark HKB junction and an HFC lid

rated explosion proof for Class I, Groups B, C, and D. This combination is shown in

Figure 2 above. Any junction box with an internal volume less than or equal to 69

cubic inches and rated explosion proof for ClassI, Groups B, C, and D may be used.

2. Remove the junction box cover.

3. Guide the two wires that extend from the top of the CO detector through the bottom

conduit hub of the junction box.

4. Screw the CO detector into the bottom conduit hub of the junction box.

5. At the monitoring site, use #10 screws through the junction box’s two mounting holes to

secure the junction box to a vertical surface.

CAUTION: Mount the CO transmitter with the detector facing down (see Figure 2).

Ø .25 Mouting Holes (2X)

3/4 NPT Conduit Hub

3.4 max

3.94 2.75

5.2

5.46

6.1

8.7 max

1.1

10 • 65-2432RK-05 CO Transmitter

Wiring the CO Transmitter to a Controller

WARNING: If the controller’s construction is not explosion-proof, the controller must be

installed in an ordinary location. Do non install a non-explosion-proof

controller in a classified location.

1. Turn off the controller.

2. Turn off or unplug incoming power to the controller.

3. Remove the junction box cover.

4. Verify that the detector leads are wired to the amplifier’s detector terminal strip. If

necessary, connect the detector leads to the detector terminal strip as shown in Figure 3.

5. Verify that the jumper block is installed over the TOXIC selector of the amplifier type

selector as shown in Figure 3.

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

of the junction box.

WARNING: To maintain the explosion proof classification of the CO 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. Adhere to your local electrical

code when installing the conduit seal.

7. Connect the two wires to the interconnect terminal strip as follows (see Figure 3).

• Connect the positive wire to the terminal labeled 24V +.

• Connect the feedback wire to the terminal labeled 4/20 FB.

CAUTION: If using shielded cable, leave the drain wire insulated and disconnected at the

transmitter. You will connect the opposite end of the cable’s drain wire at the

controller.

8. Secure the junction box cover to the junction box.

9. Route the cable or wires leading from the CO transmitter through one of the conduit hubs

at the controller housing.

CAUTION: Do not route power and transmitter wiring through the same conduit hub. The

power cable may disrupt the transmission of the transmitter signal to the

controller.

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