Product Overview

TEMPERATURE (F)
RESISTANCE/OHMS
TEMPERATURE (F)
RESISTANCE/OHMS
-5
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
100184
85340
72906
62460
53658
46220
39917
34562
30000
26104
22767
19903
17438
15313
13475
11884
10501
9298
8249
7333
6530
5826
The “OAS” is constructed of UV stabilized Poly Carbonate Plastic with seamless aluminum
tubing frame and a highly accurate thermistor with 24AWG 12” leads. The unique
construction provides a thermal barrier between the temperature probe and the duct work
allowing precise air temperature measurements.
To test an OAS, disconnect the wire leads from the control panel and remove it from
the duct. At room temperature (75F.) The ohm reading on an OAS will be
approximately 10.5K ohms (10,500 ohms). Or leave the OAS where it is and place a
separate temperature probe of known accuracy in the same location as the OAS and
measure the OAS resistance against the table provided below. You should measure
a value within 5% of the table value and the separate probe reading.
AIRFLOW
50F
20K
Model OAS
(OUTSIDE Air Sensor)
Page 4
CONTROLS INC.
Excellence Without Compromis
e
385 Hwy. 33 Englishtown, NJ 07726
Ph: 800-446-3110 - Fx: 732-446-5362
P/N 090377A0073 Rev. D Copyright © 2004-2009, EWC Controls Inc., All Rights Reserved
Forced Air Zone Controls
®