Optidew User’s Manual
26 97551 Issue 1, February 2018
OPERATION
Inputs
Figure 21
Inputs screen
Source (Pressure
Input)
Changes between pressure input from external 4-20mA
transmitter or a fixed value
Available input: Fixed, External
Pressure Unit
Measurement unit for pressure inputs
Available input: kPa, psig, psia, barg, bara
Setpoint
(If ‘Manual’
selected)
Sets pressure used for internal calculations
Range Low
(If ‘External’
selected)
Sets the low range of the connected pressure transmitter
Range High
(If ‘External’
selected)
Sets the high range of the connected pressure transmitter.
Compensation
Recalculate dew point based on pressure input
Available input: Off, On
Direction (If
‘Compensation’
On)
Select ‘From Atmos’ if dew-point sensor is at atmospheric
pressure.
Select ‘To Atmos’ if dew-point sensor is at ‘Setpoint’ pressure or
pressure measured by transducer.
Source (Ambient
Temp Input)
Changes between temperature input from external PT100 or a
fixed value.
Available input: Fixed, External
Setpoint
(If ‘Manual’
selected)
Sets temperature used for internal calculations