RKI Instruments 65-2322RKSS Bedienungsanleitung

65-2322RKSS

Oxygen Transmitter

Operator’s Manual

Part Number: 71-0299RK

Revision: B

Released: 10/1/20

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2 • 65-2322RKSS Oxygen 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.

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65-2322RKSS Oxygen 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 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

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4 • 65-2322RKSS Oxygen Transmitter

Table of Contents

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

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

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

Oxygen Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Junction Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

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

Mounting the Oxygen Transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Wiring the Oxygen Transmitter to a Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Introducing Incoming Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Verifying/Setting the Fresh Air Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Replacing Components of the Oxygen Transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

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

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

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

Setting the Fresh Air Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

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

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

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

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65-2322RKSS Oxygen Transmitter • 5

Overview

This instruction manual describes the explosion proof capillary type oxygen transmitter

65-2322RKSS. This manual also describes how to install, start up, configure, maintain, and

calibrate the transmitter when using it with a gas monitoring controller. A parts list at the end

of this manual lists replacement parts and accessories for the oxygen transmitter. See the

controller operator’s manual for information specific to the controller.

Specifications

Table 1 lists specifications for the oxygen 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 65-2322RKSS, you must follow the instructions and warnings

in this manual to assure proper and safe operation of the 65-2322RKSS and to

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

calibrate the 65-2322RKSS as described in this manual.

Table 1: Specifications

Target Gas Oxygen

Sampling Method Diffusion

Detection Range 0 to 25%

Accuracy ± 0.5% O2

Area Classification CSA classified explosion proof 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).

Signal Output 4 to 20 mA

Oxygen Detector Signal Output 0 mV at 0% oxygen nominal

18 mV at 25% oxygen nominal

Response Time 90% in 30 seconds

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6 • 65-2322RKSS Oxygen Transmitter

Description

This section describes the components of the oxygen transmitter. The oxygen transmitter is a 4

- 20 mA type detector head. It consists of the oxygen detector, amplifier, and junction box.

Figure 1: Oxygen Transmitter Component Location

Amplifier

SIG/PWR

ZERO

SPAN

Controller Terminal Strip

Factory Adjust Pot

Span Pot

Zero Pot

Detector Terminal Strip

TOXIC OXY

Oxygen Detector

+TestPoint(Red)

- Test Point (Black)

100mV - 500mV

Range

J-Box

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65-2322RKSS Oxygen Transmitter • 7

Oxygen Detector

The oxygen detector consists of the detector housing body, detector housing cap, cap gasket,

and the plug-in sensor.

Figure 2: Oxygen 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 oxygen 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 oxygen detector to the amplifier. One of the wires is

white and one of the wires is green.

The housing includes two sockets installed on a circuit board. These sockets accept the plug-

in sensor’s two pins to provide electrical connection for the sensor. The circuit board with the

sockets conditions the sensor’s signal before the signal reaches the amplifier.

Housing Cap & Cap Gasket

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

from damage. A foam gasket is installed inside the housing cap that seals against the sensor

face. The housing cap also includes a flame arrestor which contains any sparks that may occur

within the detector and a flame arrestor guard which protects the flame arrestor from damage.

Unscrew the detector cap to access the plug-in sensor for maintenance or replacement. A cap

gasket seals the interface between the housing and cap.

Plug-in Oxygen Sensor

The plug-in sensor is secured in the detector assembly by the housing cap. Through a series of

chemical and electrical reactions, the sensor produces a millivolt output that corresponds to

Cap Gasket

Flame Arrestor

Guard

Detector Housing Cap

Plug-in Oxygen Sensor

Detector HousingBody

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8 • 65-2322RKSS Oxygen Transmitter

the detection range of the transmitter.

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. A

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

the amplifier. The amplifier includes the controller terminal strip, detector 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 amplifier 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 a toxic gas detector and are not

used in the oxygen transmitter. Use the two detector terminal strip positions that are labelled

“OXY” to connect the detector to the amplifier.

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

Transmitter to a Controller” on page 11 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

(oxygen free) output during the calibration procedure. Turn the adjustment 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 fresh air output

during the start up and calibration procedure. Turn the adjustment screw clockwise to increase

the fresh air output and counterclockwise to decrease the fresh air 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.

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65-2322RKSS Oxygen Transmitter • 9

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 amplifier and wiring

connections made to the amplifier. 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.

The amplifier is factory installed in the junction box. 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.

Installation

This section describes procedures to mount the oxygen transmitter in the monitoring

environment and wire the transmitter to a controller.

Mounting the Oxygen 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 that is at normal breathing level.

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10 • 65-2322RKSS Oxygen Transmitter

Figure 3: Mounting the Oxygen Transmitter

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

down (see Figure 3).

2.40 3/4 NPT

Female,

.20 Dia. x .45

Slot, 2X

3.66

3.15

Oxygen Detector

J-Box

3.34

1.10

8.25 max

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