IN-E-HyFlex-V4_10
Rotronic AG
Bassersdorf, Switzerland
Document code
Unit
Instruction Manual
Document Type
HygroFlex transmitter version 4: instruction
manual
Document title
Page
33
of 61
© 2006; Rotronic AG IN-E-HyFlex-V2_10.doc
7.1 CALCULATE (HygroFlex 2 and 3)
Definition
This function is used to select the humidity parameter that is calculated and displayed by the
instrument
1)
. Any selection made here has no effect on analog output #3 (computed parameter) of
the HygroFlex 3. Use the HW4 software to change the computed parameter sent this output.
1) Does not apply to third-party analog probes.
The calculated parameter is selected individually for each probe connected to the instrument
1)
.
Prior to entering this function, select on the display the probe input to program.
The unit system (
M
etric or
E
nglish) is factory programmed according to what was specified when
the instrument was ordered. The unit system can be selected with the optional HW4 software (see
separate instructions).
Selections
Parameter
Metric
English
Flex 2
Flex 3
Dew Point / Frost Point
1)
°
C
°
F
x x
Wet Bulb Temperature
°
C
°
F
x x
Enthalpy J/g
BTU/lb
x x
Vapor Concentration
g/m
3
gr/cuft
x x
Specific Humidity
g/kg
gr/lb
x x
Mixing Ratio
g/kg
gr/lb
x x
Vapor Concentration
at Saturation
g/m
3
gr/cuft
x x
Partial Pressure
of Water Vapor
hPa
PSI or In Hg
x x
Saturation Pressure
of Water Vapor
hPa
PSI or In Hg
x x
Pressure Constant
2)
(Barometric Pressure)
hPa
PSI or In Hg
x x
1) The standard factory setting is frost point for values below freezing. This setting can be changed
to dew point with the optional HW4 software
2) This selection shows the fixed value that is used for computing the parameters that require
barometric pressure as an input. The fixed pressure value can be changed with the optional HW4
