Panametrics TMO2D, User Manual, Page: 15 / 101

TMO2D User’s Manual 7
Chapter 2. Installation
2.3.2 XMO2 Transmitter
Wiring the XMO2 oxygen transmitter to the TMO2D display requires use of the X4(*) cable, which can support
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 3 below for cable requirements.
For longer cable lengths, consult the factory.
2.3.2.1 Wiring:
Use the following steps to interconnect the XMO2 to the TMO2D.
1. Route the 4-wire power/analog output cable through a cable gland as shown in Figure 3 below.
2. After terminating the shield as shown, assemble the three gland pieces together and tighten the gland to secure
the cable and the shield.
IMPORTANT: The cable shield must be terminated in the cable gland as shown in Figure 3 below.
Figure 3: Proper Cable Gland Assembly
3. Route the cable into the XMO2 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.
4. Unplug terminal block TB1/TB2 on the XMO2 transmitter PC board (PCB) by carefully pulling it directly up without
bending the pins attached to the PCB. (See Figure 4 on page 8.)
5. Loosen the TB1 side screws and insert the colored wires into the corresponding openings on top of TB1. See Table 4
on page 7 for color-coded pin designations.
Table 3: Cable Requirements for XMO2
MAX. CABLE LENGTH CABLE SIZE MAX. CABLE LENGTH CABLE SIZE
Feet Meters AWG Sq. mm Feet Meters AWG Sq. mm
450 130 22 0.35 1,700 500 16 1.2
700 200 20 0.6 2,800 850 14 2.0
1,050 320 18 1.0 4,000 1,200 12 3.0
Table 4: Wiring the XMO2 with 4-Wire Cable
Wire Connections Color XMO2 Transmitter TB1 TMO2D Display TB5
Power +24 VDC Red Pin 1 +24 V
Power Return Black Pin 2 RTN
+ mA Signal White Pin 3 GAS
–mA Signal Blue or Green Pin 4 RTN
Cable Shield