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RKI Instruments 35-3000RK-OXY User Manual

Page 11

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35-3000RK-OXY Sample-Draw Oxygen Detector • 11

CAUTION:

If using shielded cable, leave the cable’s drain wire insulated and disconnected at the
sample-draw detector. You will connect the opposite end of the drain wire at the

controller.

7.

Route the cable or wires in conduit leading from the sample-draw detector through
one of the conduit hubs on the controller.

CAUTION:

At the controller, do not route controller power and sample-draw detector wiring
through the same conduit hub. The controller power cable may disrupt the

transmission of the sample-draw detector signal to the controller.

8.

Connect the wires to the applicable detector terminal strip and power terminals at the
controller as shown in Figure 4.

Figure 4: Wiring the Sample-Draw Oxygen Detector to a Controller

5.

Connect the cable shield to an available chassis ground. The grounding screw on one
of the controller’s grounded conduit hubs is an example of a chassis ground.

4/20

White

Green

To Oxygen

Sensor

WHT GRN BLK GND 24V

+

_

LEL/ O2

AMP

P- AMP

Pump,
Internally
Wired

PUMP

PSW

GND

H

Controller Terminals

O r Power Supply

N o tU s e dOn
ThisVersion

Controller Oxygen

Detector Terminals

Green (-)

White (+)

N

115VAC

- (DC Ground)

+( 23 VDC - 28 VDC)

PCB in Single Point

Sample- Drawing

Detector

Pressure Switch,
Internally Wired

OxygenSample Draw Housing

RD