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A PPENDIX
CHAPTER 0ANALOG INPUT 4-20MA REFERENCE
CHART
Analog 4-20Ma Gain/Offset Conversion Formula:
Gain = Sensor Range (High Value - Low Value) / 4
Offset = Sensor Low Value - Gain
Example: TH140 Humidity
Gain = (High Value (100) -Low Value (0)) / 4 = 25
Offset = (Sensor Low Value (0) - Gain (25)) = -25
Table A.1
Analog Input 4-20mA Reference Chart
RLE
Product
Number
Transducer Type Range Gain Offset
TEMPERATURE
TH140 Temperature (Display in Deg F) 50°F - 95°F 11 39
Temperature (Display in Deg F 32°F - 122°F 22 11
Temperature (Display in Deg C) 10°C - 35°C 6 4
Temperature (Display in Deg C 0°C - 55°C 13 -13
Humidity 0% - 100% RH 25 -25
T120 Temperature (Display in Deg F) 50°F - 95°F 11 39
Temperature (Display in Deg F) 32°F - 122°F 22 11
Temperature (Display in Deg C) 10°C - 35°C 6 4
Temperature (Display in Deg C) 0°C - 50°C 13 -13
CURRENT
CT55 Current 0 - 5 Amps
0 - 55 Amps
1
13
-1
-13