User Manual

E-M-HF62-V1_11

Rotronic AG

Bassersdorf, Switzerland

Document code Unit

Instruction Manual

Document Type

HygroFlex HF62 Humidity Temperature

Transmitters: User Guide

Document title

Page

21 of 27

10 Technical data

10.1 Specifications

General HF62

Device type Humidity temperature transmitter with analog output signals

Circuit type Two independent 2-wire, loop powered circuits

Mechanical configuration types D and W

Power supply and connections HF62

Supply voltage (VDD)

10…28VDC

V min = 10 V + (0.02 x Load*) *Load resistance in ohms.

Nominal current consumption

(low voltage models)

2 x 20 mA

Cable fittings Terminal block and M16 cable grip or ½” conduit adapter

Polarity protection

(low voltage models)

Protective diode on V+

Humidity measurement HF62

Sensor ROTRONIC Hygromer

IN1

Measuring range 0…100 %RH

Measurement accuracy at 23 °C ±1.0 %RH

Repeatability 0.3 %RH

Long term stability < 1 %RH / year

Sensor time constant Typical 10 sec, 63% of a 35 to 80 %RH step change (1m/sec air flow at sensor)

Temperature measurement HF62

Sensor Pt100 RTD, IEC 751 1/3 class B

Measuring range limits -100…150 °C / -148…302 °F

Measurement accuracy at 23 °C ±0.2 °C

Repeatability 0.05°C

Long term stability < 0.1°C / year

Sensor time constant Typical 4 sec, 63% of a step change (1m/sec air flow at sensor)

Calculated parameters HF62

Psychrometric calculations Dew or frost point (user configurable option)