Measuring Pressure Voltage Values - Hussmann Freedom Line series Installation & Operation Manual

AE8-1376 R5
10. Measuring Pressure/Voltage Values for Suction Pressure Transducer
To measure voltage to the suction pressure transducer manually, do the following:
1. Turn controller ON.
2. Monitor current suction pressure on controller display (See Section 2.2) and record reading.
3. Using a voltmeter, measure voltage between pin 12 and pin 11 on the top of the green-block-plug
located on rear of controller (See Figure 15).
4. Compare suction pressure and voltage to the table below.
Figure 15 – Measuring Suction Pressure Transducer Voltage
© 2015 Emerson Climate Technologies, Inc.
Application Engineering
B U
DC Voltage PSI
0.5 -15.0
0.6 -11.3
0.7 -7.5
0.8 -3.8
0.9 0.0
1 3.8
1.1 7.5
1.2 11.3
1.3 15.0
1.4 18.8
1.5 22.5
1.6 26.3
1.7 30.0
1.8 33.8
1.9 37.5
2 41.3
2.1 45.0
2.2 48.8
2.3 52.5
2.4 56.3
L L E
DC Voltage
2.5
2.6
2.7
2.8
2.9
3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4
4.1
4.2
4.3
4.4
4.5
7-21
T I N
May 2016
PSI
60.0
63.8
67.5
71.3
75.0
78.8
82.5
86.3
90.0
93.8
97.5
101.3
105.0
108.8
112.5
116.3
120.0
123.8
127.5
131.3
135.0