Rotronic HF5 User Manual download pdf (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

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)

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