ROTRONIC HygroLab - Manual (Page 17)

IN-E-HyLab-V4_11
Rotronic AG
Bassersdorf, Switzerland
Document code Unit
Instruction Manual
Document Type
HygroLab bench top indicator version 4:
instruction manual
Document title
Page 17 of 51
© 2006; Rotronic AG IN-E-HyLab-V4_11
6.1 CALCULATE (HygroLab 2 and 3)
Definition
This function is used to select or view the humidity parameter that is calculated by the instrument.
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 to program.
1) Does not apply to third-party analog probes.
The unit system (Metric or English) can be changed with the keypad (see Functions, Settings) or
with the optional HW4 software, when the HygroLab is connected to a PC.
Selections
Parameter Metric English Lab 1 Lab 2 Lab 3
Dew Point / Frost Point 1) °C °F N/A x x
Wet Bulb Temperature 2) °C °F N/A x x
Enthalpy 2) J/g BTU/lb N/A X X
Vapor Concentration g/m 3 gr/cuft N/A X X
Specific Humidity 2) g/kg gr/lb N/A X X
Mixing Ratio 2) g/kg gr/lb N/A X X
Vapor Concentration
at Saturation
g/m 3 gr/cuft N/A X X
Partial Pressure
of Water Vapor
hPa PSI or In Hg N/A X X
Saturation Pressure
of Water Vapor
hPa PSI or In Hg N/A 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)
Calculation of this parameter requires barometric pressure as an input. The fixed value used for barometric
pressure can be changed either directly from the keypad - see MENU, SETTINGS - or with the optional HW4
software (all models). The HygroLab 2 or 3 can also be configured to accept the input from an analog
pressure probe (variable pressure value).