GE TMO2D, Руководство пользователя

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Chapter 2. Installation
4 TMO2D Digital Display User’s Manual
2.3.1 TMO2 Transmitter (cont.)
2.3.1a Cable Requirements:
•
Internal compensation: X3(*) or Y3(*) 3-wire 22-AWG cable.
•
External compensation: X4(*) 4-wire 22-AWG cable.
The X3(*) and X4(*) cables can be used for distances up to 450 ft (130 m). For longer distances, each cable can be
supplied as 18-AWG that can be located up to 1,050 ft (320 m). If you are using your own cable, refer to Table 1 below
for cable requirements.
For longer cable lengths, consult the factory.
2.3.1b Wiring:
Use the following steps to interconnect the TMO2 to the TMO2D.
1. Route the cable into the TMO2 transmitter through one of the 3/4" conduit holes on the side of the transmitter.
WARNING! Be sure to plug the unused conduit/cable entry hole on the transmitter, in order to meet
specifications and to maintain the appropriate weatherproof or explosion-proof rating.
2. Unplug TB1 on the TMO2 transmitter PC board (PCB) by carefully pulling it directly up without bending the pins
attached to the PCB.
3. Loosen the TB1 side screws and insert the colored wires into the corresponding openings on top of TB1. See
Table 2 below for color-coded pin designations, and Figure 1 on page 5 for the TB1 location.
Table 1: Cable Requirements for TMO2
MAX. CABLE LENGTH CABLE SIZE
Feet Meters AWG Sq. mm
450 130 22 0.35
700 200 20 0.6
1050 320 18 1.0
1700 500 16 1.2
2800 850 14 2.0
4000 1200 12 3.0
Table 2: Wiring the TMO2 with a 4-Wire Cable
Wire Connections Color TMO2 Transmitter TB1 TMO2D Display TB5
Power +24 VDC Red Pin 1 +24 V
Power Return Black Pin 2 RTN
Oxygen White Pin 3 GAS
External Compensation* Blue or Green Pin 4 COMP
*For external compensation, you must use a 4-wire cable to make this connection