RKI Instruments 65-2507RK User Manual

65-2507RK

Oxygen Transmitter

Operator’s Manual

Part Number: 71-0080RK
Revision: B
Released: 1/14/14

www.rkiinstruments.com

WARNING

Read and understand this instruction manual before operating
detector . Improper use of the dete ctor 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.
T ypical calibration frequencies for most applications a re between
3 and 6 months, but can be required more often or less often
based on your usage.

65-2507RK Oxygen Transmitter

Product Warranty

RKI Instr umen ts, I nc. wa rran ties gas a larm equi pment sold by us to be fr ee f rom def ects in
materials, workmanship, and performance for a period of one year fr o m date of shipment
from RKI Instruments, Inc. Any parts found defective withi n tha t 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 ser v ice, and
which must be cleaned, repaired, or replaced on a routine basis. Examples of such items
are:

W arranty 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 , a nd we are not r esponsible for removal or r eplacement costs,
local repair costs, transportation costs, or contingent expenses incurred without our prior
approval.

a) Absorbent cartridges d) Batteries
b) Pump diaphragms and valves e) Filter elements
c) Fuses

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 RK I 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 i ndemnification for a ny accident or damag e c au sed by the operatio n of
this gas monitor, and our warranty is limited to the replacement of parts or our complete
goods.

65-2 5 07R K Oxygen Transmitter

Table of Contents

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

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

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

Oxygen Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

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

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

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Mounting the Oxygen Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Wiring the Oxygen Transm itter to a Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Start Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Introducing Incoming Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Setting the Fresh Air Signal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Replacing Components of the Oxygen Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Calibration Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Preparing for Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Setting the Fresh Air Reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Setting the Zero Reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Returning to Normal Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

65-2507RK Oxygen Transmitter

Overview

This instruction manual describes the oxygen transmitter. 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 operator’s manual for the controller for
information specific to the controller.

Specifications

Table 1 lists specif ications for the oxygen transmitter.

Table 1: Specifications

Description Specification

Target Gas Oxygen (O
Sampling Method Diffusion

Signal Out put 4 - 20 mA
Detection Range 0 to 25.0% VOL (by volume)
Accuracy ± 0.5% O

Response Time 90% in 30 seconds

)

2

2

W ARNING: When using the 65-2507RK, you must follow the instructions and warnings

in this manual to assure proper and safe operation of the 65-2507RK and to
minimize the risk of personal injury. Be sure to maintain and period ically
calibrate the 65-2507RK as described in t hi s manual.

65-2507RK Oxygen Transmitter • 1

Description

This section describes the components of the oxygen transmitter. The transmitter consists
of the oxygen detector, amplifier, and junction box.

Interconnect
terminal strip

Test point (-)

Potentiometer

(factory-set)

Zero potentiometer

Span potentiometer

Amplifier type

selector

terminal strip

Oxygen Detector

+

FB

4/20

POWER/SIG

SENSOR

OXY

W

24V

+

TP

+

G

ZERO

SPAN

OXYGEN

-

TP

-

BATT

TOXIC

RD BK

Detector

Figure 1: Oxygen Transmitter Component Location

Test point (+)

Oxygen amplifier

Securing screw (2)

Oxygen detector

The oxygen detector includes the oxygen sensor, detector housing, and detector leads.

Oxygen Sensor

The oxygen sensor is encapsulated within the detector housing. Through a series of
chemical and electronic reactions, the sensor produces an electrical output that is
proportional to the detection range of the transmitter. The oxygen sensor used is a
capillary type that is not susceptible to output changes with cha nges in atmospheric
pressure.

Detector Housing

The oxygen sensor is encapsulated within the detector housing. Mounting threads
(3/4 in. NPT) at the top of the detector housing allow you to mount the oxygen detector
into the bottom conduit hub of the junction box.

Detector Leads

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

2 • 65-2507RK Oxygen Transmitt er