Connecting The Delta F Oxygen Cell - GE moisture.IQ User Manual

1.9.4 Connecting the Delta F Oxygen Cell

The Delta F Oxygen Cell is available in a general-purpose model with standard or VCR
also be mounted in a weatherproof enclosure (R4) for outdoor applications or an explosion-proof enclosure (R7) for
use in hazardous areas.
CAUTION! Do not power up the moisture.IQ without first establishing a gas flow through the Delta F
Oxygen Cell (see "Establishing a Gas Flow Through the Oxygen Cell" on page 26).
Each Delta F Oxygen Cell has a set of sensor electrodes and a set of secondary electrodes. For proper operation, make
connections to each set of electrodes using a six-wire shielded cable. GE provides the
22 AWG conductors for use with Delta F Oxygen cells.
Note: Cable with 16 AWG conductors is the largest cable size that can be easily installed into the moisture.IQ
terminal blocks and the Delta F sensor terminal posts.
Cable error is a function of cable resistance/foot, length of cable, and maximum sensor current output. Since higher
range sensors have a greater current output, they have shorter acceptable cable lengths. Larger gauge cable results in
longer acceptable cable lengths. Use Table 1 below to determine acceptable installation lengths for your application.
moisture.IQ User's Guide
Table 1: Acceptable Cable Lengths for Delta F Ranges
Delta F Sensor Range
0-50 ppm and 0-100 ppm
0-1000 ppm
0-10,000 ppm and greater
0-50 ppm and 0-100 ppm
0-1000 ppm
0-10,000 ppm and greater
0-50 ppm and 0-100 ppm
0-1000 ppm
0-10,000 ppm and greater
0-50 ppm and 0-100 ppm
0-1000 ppm
0-10,000 ppm and greater
Cable Gauge Max Length
22 AWG 1300 ft
22 AWG 400 ft
22 AWG 100 ft
20 AWG 2100 ft
20 AWG 630 ft
20 AWG 160 ft
18 AWG 3300 ft
18 AWG 1000 ft
18 AWG 250 ft
16 AWG 6600 ft
16 AWG 2000 ft
16 AWG 500 ft
Chapter 1. Installation and Wiring
®
fittings. The oxygen cell can
704-1357-B-Z
cable with
21