RKI Instruments 65-2516RK - Manual (Page 6)

2 • 65-2516RK Oxygen Transmitter
Description
This section describes the components of the oxygen transmitter. The transmitter consists
of the oxygen detector, amplifier, and junction box.
Figure 1: Oxygen Transmitter Component Location
Oxygen Detector
The oxygen 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 oxygen 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. The
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
oxygen detector to the amplifier. The housing includes sockets installed on a circuit board.
These sockets accept the sensor’s two pins to secure the sensor within the detector
housing. The circuit board with the sockets conditions the sensor’s signal before the signal
reaches the amplifier.
3/4" NPT Conduit Opening
For Wire Entry
ZERO
SPAN
Not
Used 4/20
FB +
24V
POWER/SIG
OXY
W G
SENSOR
TP - TP
+
Not
Used OXYGEN
Interconnect Terminal
Strip
Test Point (+)
Amplifier
Securing Screw (2X)
Detector
Housing
Detector Housing
Cap
Flame Arrestor
Guard
Oxygen
Detector
Test Point (-)
Factory Set
Potentiometer
Zero
Potentiometer
Span
Potentiometer
Jumper Block
Installed On Oxygen
Select Header
Detector Terminal
Strip