User Manual

ManualsBrandsROTRONIC ManualsAccessories for electricalHF4

E-M-HF4-V1_22

Rotronic AG

Bassersdorf, Switzerland

Document code

Unit

HygroFlex HF4 Humidity Temperature

Transmitters: User Guide

Instruction Manual

Document Type

Page

2 of 29

Document title

Table of contents

1 Overview .............................................................................................................................................. 3

2 Mechanical configurations and dimensions ..................................................................................... 4

2.1 Display and keypad option ............................................................................................................... 5

3 General description ............................................................................................................................. 5

3.1 Power supply .................................................................................................................................... 5

3.2 Measured parameters ...................................................................................................................... 5

3.3 Calculated parameters ..................................................................................................................... 6

3.4 Analog output signals (HF42 and HF43) .......................................................................................... 6

3.5 Digital interface (HF45) ..................................................................................................................... 7

3.6 Service connector ............................................................................................................................. 8

3.7 Sensor protection (dust filter)............................................................................................................ 8

4 User configurable settings and functions ......................................................................................... 8

4.1 Function overview ............................................................................................................................. 9

4.2 Factory default settings .................................................................................................................. 10

5 Mechanical installation ..................................................................................................................... 12

5.1 General guidelines .......................................................................................................................... 12

5.2 HF4 enclosure ................................................................................................................................ 12

5.3 Installation of the HF4 type D (through wall mount) ........................................................................ 12

5.4 Installation of the HF4 type W (surface mount)............................................................................... 13

6 Electrical installation ........................................................................................................................ 14

6.1 General wiring guidelines ............................................................................................................... 14

6.2 Guidelines for RS-485 wiring (HF45) .............................................................................................. 15

6.3 Cable grip and cable specifications ................................................................................................ 15

6.4 Wiring ............................................................................................................................................. 15

7 Operation ........................................................................................................................................... 19

7.1 Minimum load requirements for the HF43 with voltage outputs ...................................................... 19

7.2 HF42 and HF43 transmitters (analog outputs)................................................................................ 19

7.3 HF45 (digital output) ....................................................................................................................... 20

7.4 Internal menu (optional keypad and display) .................................................................................. 21

7.5 Displayed parameters (optional keypad and display) ..................................................................... 21

8 Maintenance....................................................................................................................................... 22

8.1 Service cable .................................................................................................................................. 22

8.2 Location of the service connector (mini USB type) ......................................................................... 22

8.3 Periodic calibration check ............................................................................................................... 22

8.4 Cleaning or replacing the dust filter ................................................................................................ 23

8.5 Validation of the output signals transmission .................................................................................. 23

9 Firmware updates .............................................................................................................................. 24

10 Technical data ................................................................................................................................... 25

10.1 Specifications ................................................................................................................................. 25

10.2 Dew point accuracy ........................................................................................................................ 27

11 Accessories ....................................................................................................................................... 28

12 Supporting documents ..................................................................................................................... 28

13 Document releases ........................................................................................................................... 29