Kahn Optidew Bench Top, User Manual

Page: 36 / 88

Optidew User’s Manual
Kahn Instruments 27
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
Value
(If ‘Fixed’
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 dewpoint based on pressure input
Available input: Off, On
Direction (If
‘Compensation’
On)
Select ‘From Atmos’ if dewpoint sensor is at atmospheric
pressure.
Select ‘To Atmos’ if dewpoint sensor is at entered fixed pressure
or pressure measured by transducer.
Source
(Temperature
Input)
Changes between temperature input from external PT100 or a
fixed value.
Available input:
Fixed, External
Value
(If ‘Fixed’
selected)
Sets temperature used for internal calculations