ROTRONIC HF5 - Manual (Page 27)

E-M-HF5-V1_25
Rotronic AG
Bassersdorf, Switzerland
Document code Unit
HygroFlex HF5 Humidity Temperature
Transmitters: User Guide Instruction Manual
Document Type
Page 27 of 30
Document title
© 2009-2013; Rotronic AG E-M-HF5-V1_25
10 Technical data
10.1 Specifications
General HF52 HF53 HF55
Device type
Humidity temperature transmitter with analog output
signals
Humidity temperature
transmitter with digital
output
Circuit type 2-wire, loop powered 3-wire
Mechanical configuration types D and W
Power supply and connections HF52 HF53 HF55
Supply voltage (VDD) 10…28VDC
V min = 10 V + (0.02 x
Load*) *Load
resistance in ohms. Option 1 (standard):
15…40 VDC or
12…28 VAC
Option 2: (
galvanically
isolated):
9 to 36 VDC or
7 to 24 VAC
Option 1 (standard):
5…40 VDC or
12…28 VAC
Option 2: (
galvanically
isolated):
9 to 36 VDC or
7 to 24 VAC
Option 3: PoE (not
available on models
with RS-485
interface)
Typical current consumption 2 x 20 mA 100 mA Model with USB
interface: 100 mA
Model with Ethernet
interface: 300 mA
Electrical connections Terminal block and M16 cable grip or ½” conduit
adapter
Connector (USB or
Ethernet), terminal block
(power supply and RS-
485) and M16 cable grip
or ½” conduit adapter
Polarity protection Protective diode on V+
Humidity and temperature
measurement
See document E-M-HC2 Probes > Specifications
Calculated parameters
HF52 HF53 HF55
Psychrometric calculations
Dew point (Dp) above and below freezing
Frost point (Fp) below freezing and dew point above freezing
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)