ROTRONIC PF4 - Manual (Page 50)

E-M-PF4-V1_00
Rotronic AG
Bassersdorf, Switzerland
Document Code Unit
PF4 Differential Pressure Transmitter:
Instruction Manual
Instruction Manual
Document Type
Page 50 of 54
Document Title
© 2014; Rotronic AG E-M-PF4-V1_00
Analog Input
Measurement range
Voltage: 0…3.2 V
Current: 0…25 mA
Accuracy 0.5% of current measured value
Temperature dependence
Voltage: ±30 mV
Current: ±60 µA
Calculated Parameters
Psychrometric parameters
Dew point (Dp) above and below freezing point
Frost point (Fp) below freezing point and dew point above freezing point
Wet bulb temperature (Tw)
Enthalpy (H)
Vapor concentration (Dv)
Specific humidity (Q)
Mixing ratio by weight (R)
Vapor concentration at saturation (Dvs)
Vapor partial pressure (E)
Vapor saturation pressure (Ew)
Startup Time and Measurement Interval
Startup time <5 s (typical)
Measurement interval 1 s (typical)