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E-M-HF8-V2_13 

Rotronic AG 
Bassersdorf, Switzerland 

Document code 

Unit 

HygroFlex HF8 Humidity Temperature 
Transmitter: User Guide 

Instruction Manual 

Document Type 

Page 

1

 of 37 

Document title 

 

HygroFlex HF8 

Humidity Temperature Transmitter 

 

User Guide 

 
 

 

 

 

© 2012-2013; Rotronic AG                                                                                                                               E-M-HF8-V2_20

 

Summary of Contents for HygroFlex HF8

Page 1: ...tzerland Document code Unit HygroFlex HF8 Humidity Temperature Transmitter User Guide Instruction Manual Document Type Page 1 of 37 Document title HygroFlex HF8 Humidity Temperature Transmitter User G...

Page 2: ...ctions 11 4 3 Configuration of the analog output signal type 12 5 Mechanical installation 12 5 1 General guidelines 12 5 2 HF8 enclosure 13 5 3 Installation of the enclosure and probe 13 6 Electrical...

Page 3: ...ures such as potentiometer free digital calibration hot swapping of the probe etc Depending on the HygroClip 2 probe model the HF8 can measure conditions within the range of 0 to 100 RH and 100 to 200...

Page 4: ...ide of the analog output signals is tied to the negative side VDC or neutral VAC of the power supply Depending on the type of output signal the HF8 will operate with the following minimum voltage 0 1...

Page 5: ...tions for the typical current consumption of the HF8 3 2 Probe inputs The HF8 has two probe inputs Probe input 1 is the input that is the closest to the front of the transmitter see picture Using the...

Page 6: ...ing o Frost point Fp below freezing and dew point above freezing o Wet bulb temperature Tw o Enthalpy H o Vapor concentration Dv o Specific humidity Q o Mixing ratio by weight R o Vapor concentration...

Page 7: ...e Both probe inputs can be logged at the same time and in that case the recording capacity per probe is cut in half Each record is automatically date and time stamped The calculated parameter cannot b...

Page 8: ...ny of the two HF8 probe inputs and can be made to monitor alarm conditions associated with one of the following o Relative humidity or parameter measured by an analog 1 channel probe o Temperature o C...

Page 9: ...he HW4 software for each probe input o Bad RH sensor or major sensor failure open or shorted sensor humidity and temperature 3 10 Audible alarm beeper The HF8 can emit a sound when an alarm condition...

Page 10: ...apply a correction The test is automatically carried out at regular intervals of time Can be configured enabled or disabled The humidity sensor status can be verified either with the HW4 software or...

Page 11: ...ity temperature and the calculated parameter depending on the user application Can be configured enabled or disabled for each probe input The out of limits alarm function controls the operation of the...

Page 12: ...nalog outputs X Parameter and scale The HC2 probe settings have no effect on the HF8 4 3 Configuration of the analog output signal type The type of analog output signals generated by the HF8 can be co...

Page 13: ...tallation of the enclosure and probe Mounting position of the enclosure The enclosure of the HF8 is designed to be mounted in a horizontal position with the probe inputs located underneath Mounting ha...

Page 14: ...eans of safely separating the transmitter from the supply voltage Appropriate safety warnings and instructions should be located by the transmitter to prevent electrical shock when the transmitter enc...

Page 15: ...ut minimum distance Lightning protection Cabling in areas with a risk of lightning requires a lightning protection For cabling underground in between buildings we recommend the use of special fiber op...

Page 16: ...s connected in parallel to the unit The total resistance connected to each unit output should be at least 1000 ohms Cable resistance should not be more than 1 1000 of the load resistance HF8 analog cu...

Page 17: ...AG Bassersdorf Switzerland Document code Unit HygroFlex HF8 Humidity Temperature Transmitter User Guide Instruction Manual Document Type Page 17 of 37 Document title HF8 relay contacts 2012 2013 Rotr...

Page 18: ...2 Terminal block diagram all models Terminal Blocks K1 and K2 analog outputs Description K1 1 GND Output signal 1 see also 6 4 3 K1 2 GND Output signal 2 see also 6 4 3 K1 3 GND Output signal 3 see al...

Page 19: ...a cable K3 2 GND VDC when HF8 is powered from RS 485 data cable K3 3 D RS 485 K3 4 D RS 485 Terminal Block K4 Relay 3 Description K4 1 NC Normally closed relay not energized K4 2 COM Common K4 3 NO No...

Page 20: ...the negative of the power supply VDC or the neutral VAC Please see 3 1 for more details Terminal K6 3 Protective ground is usually connected to GND If this is not wanted a link on the PCB B2 must be r...

Page 21: ...e the mechanical and electrical installation connect the probe and simply power up the HF8 7 2 Digital interface The HF8 uses the RO ASCII communications protocol and does not offer any other option T...

Page 22: ...is properly configured for your network 7 2 2 RS 485 serial interface multi drop Instructions for using the HF8 with a RS 485 network are provided in the following manuals E M HW4v3 Main 7 5 E M HW4v3...

Page 23: ...mode can be changed as shown below The display can also be configured to show a trend indicator on each line increasing value decreasing value In the event of an alarm the symbol appears to the right...

Page 24: ...Version Firmware version Type Device type Name Device name User defined MENU Activates the internal menu Press this key again to go back to the previous sub menu or to exit the menu o Changes the pro...

Page 25: ...probe 1 and probe 2 for each displayed parameter When Custom Calculations are enabled displays up to two user defined Custom Calculations on two separate lines Local Settings Date Fmt dd mm yyyy mm d...

Page 26: ...reference environment Saves value entered manually as a cal point Adjust Adjusts the probe Effect depends on number of calibration points in probe memory Reset to Factory Returns the probe to the ini...

Page 27: ...ings Unit Sys Press ENTER to activate the Unit Sys menu item use the or key to change the unit system Press ENTER to confirm and press MENU to exit The HW4 software can also be used to change the unit...

Page 28: ...ged at the same time and in that case the recording capacity per probe is cut in half Each record is automatically date and time stamped The calculated parameter cannot be recorded 7 5 1 Logging data...

Page 29: ...4v3 F2 015 7 7 Audible alarm beeper The audible alarm can be disabled enabled and configured after using a service cable to connect HF8 to a PC running the ROTRONIC HW4 software Instructions are provi...

Page 30: ...e ROTRONIC calibration devices and humidity standards are provided in document E M CalBasics 8 4 1 Calibration against a reference probe The HF8 can be used to do a 1 point or multi point calibration...

Page 31: ...oth the current temperature read by the device to be calibrated and the reference temperature known environment Press ENTER to activate the reference value menu item and use the or key to change each...

Page 32: ...name that shows both to which device the file applies and the version number of the firmware All firmware files have the extension HEX Procedure for updating the firmware Use cable AC3006 to connect t...

Page 33: ...nalog outputs relay outputs RS 485 terminal block and M16 cable grip or conduit adapter Ethernet connector Polarity protection Protective diode on V Probe input options HF8 Number of probe inputs 2 Di...

Page 34: ...nfigurable with the ROTRONIC HW4 software User configurable scaling limits 999 99 9999 99 engineering units Short circuit tolerant Yes Maximum external load 500 current output Minimum external load 10...

Page 35: ...EMC immunity EMC Directive 2004 108 EG EN 61000 6 1 2001 EN 61000 6 2 2005 EN 61000 6 3 2005 EN 61000 6 4 2001 A11 Solder type Lead free RoHS directive Fire protection class Corresponds to UL94 HB FD...

Page 36: ...rsion 3 Device Manager HF8 transmitter E M HW4v3 F2 001 HW4 software version 3 Device Manager HC2 probe series E M HW4v3 A2 001 HW4 software version 3 Probe Adjustment function AirChip 3000 devices E...

Page 37: ...cument title 13 Document releases Doc Release Date Notes _10 Nov 14 2012 Original release _11 May 21 2013 Page 19 the HF8 is now being shipped with the protective ground terminal block K6 tied to the...

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