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Description, Co detector – RKI Instruments 65-2432RK-05 User Manual

Page 6

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2 • 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.

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.

3/4" NPT Conduit Opening
For Wire Entry

TOXIC

ZERO

SPAN

Not

Used

4/20

FB

+

24V

POWER/SIG

OXY

W

G

SENSOR

TP

-

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