HygroFlex HF7 Humidity Temperature Transmitters v.1 User Guide
Contents
1. a HF72 2 wire loop powered 10 28 VDC depending on the load connected to the output s The minimum supply voltage can be determined as follows V min 10 V 0 02 x Load Load resistance in ohms For the maximum load of 500 Q the minimum supply voltage is 10 0 02 x 500 20 VDC With both output circuits closed the maximum current consumption is 40 mA b HF73 3 wire with analog outputs 15 to 40 VDC see note below or 12 to 28 VAC With both output circuits closed the maximum current consumption is 50 mA Note depending on the type of output signal the HF 73 will operate with the following minimum voltage 0 1 V outputs 5 VDC or 5 VAC 0 5 V outputs 10 VDC or 8 VAC 0 10 V outputs 15 VDC or 12 VAC 0 20 mA or 4 20 mA outputs 6 VDC or 5 VAC with 0 load 15 VDC or 12 VAC with 500 load 3 2 Measured parameters The HF7 measures relative humidity with a ROTRONIC Hygromer IN1 capacitive sensor and temperature with a Pt100 RTD 3 3 Calculated parameters Using the ROTRONIC HW4 software the HF7 can be configured by the user to calculate either the dew point or the frost point 3 4 Analog output signals HF72 and HF73 With the ROTRONIC HW4 software any of the two analog output signals can be made to correspond to one of the following e Relative humidity e Temperature e Dew or frost point Any output can also be disabled The scale of each analog output can be set within the numeri2. Universal Asynchronous Receiver Transmitter Maximum service cable length 5 m 16 4 ft Approx 800 g 28 2 oz 140 g 4 9 oz per probe extension unit signal range 1V signal range 3 mV Maximum offset at bottom of 9 V signal range 50mV 2009 2011 Rotronic AG E M HF7 V1_24 E M H F7 V1 24 Rotronic AG Bassersdorf Switzerland Document code Unit HygroFlex HF7 Humidity Temperature Instruction Manual Transmitters User Guide Document Type Document title Page 22 0f23 Conformity with standards HF72 HF73 EMC Directive 2004 108 EG EN 61000 6 1 2001 EN 61000 6 2 2005 CE EMC immunity EN 61000 6 3 2005 EN 61000 6 4 2001 A11 Solder type Lead free RoHS directive Fire protection class Corresponds to UL94 HB FDA GAMP directives compatible Environmental limits HF72 HF73 Operating limits at electronics 50 85 C 0 100 RH non condensing valid for survival only Temperature limits at probe 100 150 C valid for type N D and A 100 RH up to 80 C 176 F 75 RH at 100 C 212 F 45 RH at 125 C 260 F 15 RH at 150 C 302 F Maximum air velocity at probe 40 m s 7 870 ft min depends on dust filter type Critical environments Humidity sensor as per DV04 14 0803 02 Critical chemicals 10 2 Dew point accuracy The HF7 can be configured to calculate either the dew point or frost point based on the measurement of relative humidity and temperature The accuracy of this
3. User Guide Document Type Document title 8 Maintenance 8 1 Service cable IMPORTANT o Use service cable AC3009 with all 2 wire loop powered transmitters This cable powers up the transmitter via the service connector Do not use any other method for powering the transmitter when using this cable AC3009 as this will create a ground loop and damage the transmitter For the same reasons do not use cable AC3006 with a 2 wire loop powered transmitter o Use service cable AC3006 with all 3 wire transmitters as well as with digital models This cable does not provide power to the transmitter and the transmitter should powered separately when using this cable e Both cables AC3006 and AC3009 convert UART service connector to USB and are used to connect the transmitter to a USB port of a PC running the ROTRONIC HW4 software Prior to using any of these cables the ROTRONIC USB driver must be installed on the PC Both the driver and the installation instructions document E M HW4v3 Main are located on the HW4 CD e Asanalternative cable AC2001 is used to connect the HF7 to a probe input of the HP23 hand held calibrator For service purposes the HP23 offers essentially the same functionality as the HW4 software 8 2 Location of the service connector mini USB type WARNING the service connector is a UART interface with a mini USB connector type Do not connect the service connector directly to the USB port of a PC or hub The service conn
4. 1 RH year Sensor time constant Typical 10 sec 63 of a 35 to 80 RH step change 1m sec air flow at sensor Measurement accuracy at 23 C 1 0 RH ii Typical 4 sec 6396 of a step change 1m sec air flow at sensor Psychrometric calculations Dew or frost point user configurable option 2009 2011 Rotronic AG E M HF7 V1_24 E M H F7 V1 24 Rotronic AG Bassersdorf Switzerland Document code Unit HygroFlex HF7 Humidity Temperature Instruction Manual Transmitters User Guide Document Type Document title Page 21 0f23 Start up time and data refresh rate HF72 HF73 3 4s typical 1 98 typica Data refresh rate 3 4s typical 1 7s typical Output 1 Can be made to correspond to any parameter Factory default parameter Relative humidity or dew frostpont O Fadoyd autscde Asperoorderingcode O O OoOO OoOo OO Factory detault parameter Temperature SSS Factory defauitsoale Asperodemmgcode lt C o 0 20 mA 4 20 mA 0 1 V Signal type 4 20 mA o 5V 0 10V user configurable User configurable scaling limits 999 99 9999 99 engineering units no offset 10 V signal range 90mV 20 mA signal range 4uA 20 mA signal range no offset Short circuit tolerant Maximum external load 500 O 500 O current output 1 KQ 0 1 V output 5 kO 0 5 V output Minimum external load 0 Q0 10 kO 0 10 V output 0 O current output Interface type UART
5. Instruction Manual Transmitters User Guide Document Type Page 7 of 23 Document title 3 Sensor protection dust filter A dust filter is required to protect the sensors against dust particles and high air velocity The probe of the HF7 is equipped with a with a metal filter base mod NSP ME The filter cartridge must be ordered separately see Accessories 11 5 Filter cartridge mod SP M15 is suitable for most applications 4 User configurable settings and functions The HF7 ships configured as specified on the customer order The analog outputs can be used just as with any conventional humidity and temperature transmitter and most users will never need to use the HF7 configurable settings and functions Making use of the HF7 configurable settings and functions is entirely up to the user and the appropriate settings depend on the user application We have provided below a short description of the HF7 functions and also indicated the factory default settings 4 1 Function overview MEASUREMENT ACCURACY AND RELIABILITY AirChip 3000 Functions Humidity temperature adjustment 1 point or multi point humidity calibration or adjustment 1 point or 2 point temperature calibration or adjustment Generate a time stamp for calibrations and adjustments Retain and view last adjustment date and adjustment values Generate calibration and adjustment protocols gt Automatic humidity sensor test Tests the humidity sensor for drift caused by
6. conversion varies depending on the humidity and temperature conditions as shown in the graph below Maximum humidity at sensor DPIFP Accucary 100 on Jee Sensor limit oer DP FP C 50 40 30 20 10 0 10 20 30 40 50 60 70 80 90 100 Temperature C Example at a temperature of 20 C a frost point value of 25 C is measured with an accuracy of 0 5 C or better 2009 2011 Rotronic AG E M HF7 V1_24 E M H F7 V1 24 Rotronic AG Bassersdorf Switzerland Document code Unit HygroFlex HF7 Humidity Temperature Instruction Manual Transmitters User Guide Document Type Page 230f23 Document title 11 Accessories For accessories and parts such as the HW4 configuration software service cables calibration accessories and spare dust filters please see document E M HC2 accessories 12 Supporting documents Note All document file names have an extension corresponding to the document release number example of a first release E M HWAv3 Main 10 This extension is not shown in the above table 13 Document releases Doc Release Date Nee Apr 11 2009 Original release Changed maximum operating temperature at electronics from E Mar 2 2010 Added the LC display option am Li 20 2010 20 2010 Updated document for HW4 v 3 00 document for Updated document for HAN v 3 Oct 28 2011 Updated this document regarding the model of service cable to be used with 2 wire and 3 wire mod
7. see Maintenance gt Service Cable to connect the service connector of the HF7 to a USB port of a PC with the ROTRONIC HW4 software installed Note that the ROTRONIC USB driver must be installed on the PC as explained in the HW4 manual E M HW4v3 Main e Copy the firmware update file from the ROTRONIC website to the PC e Start HW4 software on the PC and search for the HF7 HW4 Main Menu Bar gt Devices and Groups gt Search for USB Masters e After finding the HF7 expand the device tree to see the HF7 functions Select Device Manager In the Device Manager menu bar select Tools gt Firmware Update For instructions see document E M HW4v3 F2 007 2009 2011 Rotronic AG E M HF7 V1_24 E M HF7 V1 24 Rotronic AG Bassersdorf Switzerland Document code Unit HygroFlex HF7 Humidity Temperature Instruction Manual Transmitters User Guide Document Type Document title Page 20 of23 10 Technical data 10 1 Specifications Device type Humidity temperature transmitter with analog output signals Circuit type 2 wire loop powered Mechanical configuration types N D A and W 10 28VDC Supply voltage VDD V min 10 V 0 02 x Load Load 19 40 VDC or 12 28 VAC resistance in ohms Nominal current consumption 2 x 20 mA Electrical connections Terminal block and M16 cable grip or 72 conduit adapter Polarity protection Protective diode on V ROTRONIC Hygromer IN Repeatability 0 3 RH Long term stability lt
8. the right of the value For instructions see the following HW4 manual E M HW4v3 F2 007 The display option for the HF73 has a backlight The display option for the HF72 does not have a backlight 3 6 Service connector The service connector is a UART digital interface Universal Asynchronous Receiver Transmitter with a mini USB type connector This allows connecting the HF7 either to a PC running the ROTRONIC HW4 software or to a probe input of another instrument that is compatible with the HygroClip 2 HC2 probes In both cases a service cable is required See Maintenance for the location of the service connector and for the type of service cable to be used e Connecting the HF7 to a PC is used to configure the HF7 gain access to the HF7 functions such as humidity and temperature adjustment read data from the HF7 on the PC and update the AirChip 3000 firmware e Connecting the HF7 to the probe input of another instrument is useful only when the other instrument has its own display and keypad and has an internal menu equivalent to the menu of the HP23 hand held calibrator The connection allows showing the data measured by the HF7 on the other instrument display and also allows using the other instrument internal menu to do for example a humidity and temperature adjustment of the HF7 2009 2011 Rotronic AG E M HF7 V1_24 E M H F7 V1 24 Rotronic AG Bassersdorf Switzerland Document code Unit HygroFlex HF7 Humidity Temperature
9. 7 Humidity Temperature Instruction Manual Transmitters User Guide Document Type Applicability This manual applies to all instruments of the HF7 series with firmware version 1 x where 1 x can be 1 0 1 1 etc Changes to the last digit of the version number reflect minor firmware changes that do not affect the manner in which the instrument should be operated 1 Overview The HF7 transmitter series are designed for fixed installation in industrial applications The HF7 measures relative humidity and temperature and can be configured to calculate the dew or frost point Depending on the model the HF7 can measure environments within the range of 0 to 100 RH and 100 to 150 C 148 to 302 F The electronics operating range is limited to 50 100 C 58 212 F Two types of electronic circuit are available e HF72 2 wire loop powered 4 20 mA current signal e HF73 3 wire voltage or current signal Both circuit types provide linear analog outputs signals for transmission over a length of cable to a remote display recorder controller or data processing unit and can be used to measure humidity only temperature only or both parameters The HF7 features well proven sensors and a robust housing Digital signal processing ensures consistent product performance and also facilitates the task of field maintenance with features such as potentiometer free digital calibration Based on the ROTRONIC AirChip 3000 digital technolog
10. Maintenance Service Cable Unit system Metric or English HF72 HF73 As per ordering code Analog signal type 4 20 mA or other HF73 As per ordering code Psychrometric calculation HF72 HF73 As per ordering code Output 1 parameter scale and unit HF72 HF73 As per ordering code RH or DP Output 2 parameter scale and unit HF72 HF73 Temperature unit as per ordering code 2009 201 1 Rotronic AG E M HF7 V1 24 E M H F7 V1 24 Rotronic AG Bassersdorf Switzerland Document code Unit HygroFlex HF7 Humidity Temperature Instruction Manual Transmitters User Guide Document Type Page 9of 23 Document title Humidity temperature adjustment HES HE fe Device write protection Menu access from keypad Limit humidity output to 100 RH Out of limit value digital display alarm Data recording Automatic humidity sensor test Humidity sensor drift compensation Fail safe mode Simulator mode o Fora detailed description of all AirChip 3000 HF7 main functions see document E T AC3000 DF V1 o Instructions regarding the configuration of the HF7 and access to its functions are provided in the following manuals E M HW4v3 Main E M HW4v3 F2 007 E M HW4v3 DR 001 E M HW4v3 A2 001 o The factory default setting for dew frost point calculation is frost point below freezing 9 Mechanical installation 5 1 General guidelines Relative humidity is extremely dependent on temperature Proper measurement of relative humidity require
11. Rotronic AG E M HF7 V1 _24 Bassersdorf Switzerland Document code Unit HygroFlex HF7 Humidity Temperature Instruction Manual Transmitters User Guide KEE TV Page 1 of 23 Document title HygroFlex HF7 Humidity Temperature Transmitters User Guide rotronic 3 oreet Tel 44 0 191 490 1547 THORNE amp Fax 44 0 191 477 5371 DERRICK UK wine www thorneanderrick co uk 2009 2011 Rotronic AG E M HF7 V1_24 E M H F7 V1 24 Rotronic AG Bassersdorf Switzerland Document code Unit Page 2 0f 23 HygroFlex HF7 Humidity Temperature Instruction Manual Transmitters User Guide Document Type Document title Table of contents 1 OVEFVIG ee 3 2 Mechanical configurations and dimensions cccceessseeeeeeeeseeeseeenseeeseeenneeeseeeneeessonenseeseoeeseeessoneas 4 3 General ACS CHD TON me 5 3 1 dels 2 8 6 a ERR r OT 5 3 2 Measured parameters EE 5 3 9 Calculated parameters EE 5 3 4 Analog OULD UT SIO MANS eem M cL 5 3 5 IDISDIAY Option EE 6 3 6 DEVICE CONNEC eege EE 6 9f Sensor protection dust fiert 7 4 User configurable settings and functions e leeeeee ee ieeeeee ee seeee ene nennen nnn hann nn nnn nnn 7 4 1 PUNCH ONVOVEIVICW Tn X 7 4 2 Facto derau SOUS eee te erc E 8 5 leeft H 5 1 Ee Re Ee ie EE 9 5 2 Enclosure installation HF7 type N and Wi 10 5 3 Pro
12. Transmitters User Guide Document Type Document title Page 13 of 23 Terminal block diagram K1 1 H V Power supply 10 28 VDC IA o LI Relative humidity or dew point K1 2 H OUT OUT 1 K1 3 T V Power supply 10 28 VDC T 2 K1 4 T OUT Eu e output Note connect the of the power supply to only one of the V terminals The two terminals marked H V and T V are internally connected Measuring humidity or temperature only Unless configured to measure either humidity only or temperature only proper operation of the HF 72 requires both current loops to be closed The HF72 can be directly ordered from the factory to measure either humidity or temperature only When necessary any unused output of the HF72 can be disabled with the ROTRONIC HWA software When the HF72 is configured with one of the two outputs disabled close only the loop that is being used 2009 2011 Rotronic AG E M HF7 V1_24 Rotronic AG E M HF V1 24 Bassersdorf Switzerland Document code Unit Page 140f23 HygroFlex HF7 Humidity Temperature Instruction Manual Transmitters User Guide Document Tyde 6 3 2 HF73 3 wire transmitter Electrical diagram for voltage outputs The maximum permissible cable length can be determined under consideration of the voltage drop caused by the current flowing to the devices connected to the unit The voltage drop in the cable depends both on cable resistance and on the equivalent re
13. be installation H7 type N Datig EE 10 6 Ele trical instalation Mee 11 6 1 General wiring guidelines aater a nennen nenne nnn nnn n nnns sina ann nnns 11 6 2 Cable grip and cable specifICallOPs eret Ree pota het ec cea exa an De EENS ENEE 12 6 3 Wiring and terminal block dagrams 12 7 esp Emm 16 7 1 Minimum load requirements for the HF73 with voltage outputs ccccseeeeeeseeeeeeeeeeeseeeeeeseeeeeens 16 7 2 HE72 and HF73 transmitters analog OUIDUIS EE 16 8 Maintena NCE ce 17 8 1 SENICE CINIO EE 17 8 2 Location of the service connector mini USB bwpel 17 8 3 Periodic callbration eli amp CK EE 18 8 4 Cleaning or replacing the dust filter seeeeeeseseseeseseeeeeeeeeeennnn nennen 18 8 5 Validation of the output signals Iransmtssion eese nnns 18 9 So r ab orer ir Meme TT EN 19 10 Techricabdald E 20 10 1 SDECIICANOMS E EC 20 10 2 DEW DOMME ACCURACY renei DT S US 22 11 PAC COSSOMOS m 23 12 Supporting Re eu Ee EC EE 23 13 Document releases nire eee a a ea EE D ee ean 23 2009 201 1 Rotronic AG E M HF7 V1 24 E M H F7 V1 24 Rotronic AG Bassersdorf Switzerland Document code Unit Page 3of 23 Document title HygroFlex HF
14. cal limits of 999 99 and 9999 99 The D A converters used to generate the analog output signals feature a 16 bit resolution The D A converters used to generate the analog output signals feature a 16 bit resolution and exhibit a small positive offset at the bottom of the signal range as indicated below 2009 201 1 Rotronic AG E M HF7 V1 24 E M H F7 V1 24 Rotronic AG Bassersdorf Switzerland Document code Unit HygroFlex HF7 Humidity Temperature Instruction Manual Transmitters User Guide Document TE Document title Page QUE Signal type Maximum offset at range bottom 1V 3 mV 0 4 20 mA No offset HF73 The ROTRONIC HW4 software allows changing the type of output signal to one of the following 0 20 mA 4 20 mA 0 1V 0 5V or O 10V Both output signals are automatically configured with the same signal type No calibration or adjustment is required after changing the type of output signal In the case of voltage output signals load requirements apply to the external device or circuit connected to the HF 73 transmitter These requirements are defined in the Operation chapter 3 5 Display option The upper line of the display corresponds to relative humidity or dew frost point and the bottom line corresponds to temperature The display can be configured to show a trend indicator on each line A increasing value V decreasing value In the event of an alarm the display shows the symbol to
15. contaminants and and optional drift compensation can be used to automatically 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 with the instrument display if available and is shown as Good SQ tuned corrected for drift or Bad defective gt Data recording The data recording function differs from a true data logging function in the sense that the AirChip 3000 does not time stamp the data This data recording function can be used to investigate events such as a sensor malfunction as well as to retrieve data that would otherwise be lost Start or stop data recording up to 2000 value pairs RH and temperature Starting a recording session erases all previously recorded data The recording mode and log interval can be specified When the device is powered off the recording session is paused but not ended As long as the recording session has not been ended the device automatically resumes recording data when powered up again The recorded data can be downloaded to a PC with the HWA software time stamped and viewed 2009 2011 Rotronic AG E M HF7 V1_24 E M HF7 V1 24 Rotronic AG Bassersdorf Switzerland Document code Unit HygroFlex HF7 Humidity Temperature Instruction Manual Transmitters User Guide Document Type Page 8of 23 Document title AirChip 3000 Functions
16. e side of the power supply especially if the electronics will be subjected to a low humidity environment 35 RH or less 2009 2011 Rotronic AG E M HF7 V1_24 E M H F7 V1 24 Rotronic AG Bassersdorf Switzerland Document code Unit HygroFlex HF7 Humidity Temperature Instruction Manual Transmitters User Guide Document Type Page 16 0f23 Document title 7 Operation 7 1 Minimum load requirements for the HF73 with voltage outputs The following requirements apply to any external device or circuit connected to the HF 73 transmitter with voltage outputs HF73 HF73 output signal Input resistance RL Voltage Output 0 10V gt 10kOhm In the situation where the external device uses an internal pull up resistor the value of this resistor should meet the requirements shown below It is also necessary to add a pull down resistor RL connected to ground in order to be able to read 100 of the range of the HF73 voltage output VCC R Pull up HF73 Voltage Output maen vec Spo RL ov 300v et Monm ue 7 2 HF72and HF73 transmitters analog outputs If so desired use the HW4 software to configure the HF7 Complete the mechanical and electrical installation and simply power up the HF7 2009 2011 Rotronic AG E M HF7 V1_24 Rotronic AG E M HF V1 24 Bassersdorf Switzerland Document code Unit Page 17 of 23 HygroFlex HF7 Humidity Temperature Instruction Manual Transmitters
17. ector is located on the HF7 printed circuit board and can be accessed after removing the enclosure cover Service Connector Mini USB 2009 2011 Rotronic AG E M HF7 V1_24 E M H F7 V1 24 Rotronic AG Bassersdorf Switzerland Document code Unit Page 18 of 23 HygroFlex HF7 Humidity Temperature Instruction Manual Transmitters User Guide Document Type Document title 8 3 Periodic calibration check Both the Pt 100 RTD temperature sensor and associated electronics are very stable and should not require any calibration after the initial factory adjustment Long term stability of the ROTRONIC Hygromer humidity sensor is typically better than 1 RH per year For maximum accuracy calibration of the HF7 should be verified every 6 to 12 months Applications where the HF7 is exposed to significant pollution may require more frequent verifications Procedure for adjusting the HF7 with the ROTRONIC HW4 software o Use the appropriate model of service cable see Maintenance gt Service Cable to connect the service connector of the HF7 to a USB port of a PC with the HW4 software installed Note that the ROTRONIC USB driver must be installed on the PC as explained in the HW4 manual E M HW4v3 Main o Start HW4 on the PC and search for the HF7 HW4 Main Menu Bar gt Devices and Groups gt Search for USB Masters o After finding the HF7 with HW4 expand the device tree to see the HF7 functions Select Probe Adjustment Ins
18. els Tel 44 0 191 490 1547 THORNE amp Fax 44 0 191 477 5371 DERRICK UK iise 0 www thorneanderrick co uk
19. gt Simulator mode Used to make the HF7 generate fixed values for the humidity temperature and calculated parameter Can be configured enabled or disabled AirChip 3000 Functions gt Device write protection Used to protect the HF7 with a password to prevent unauthorized digital access by a digital user Can be configured enabled or disabled AirChip 3000 Functions gt Limit humidity output to 100 RH Used to prevent the humidity signal from exceeding 100 96RH when condensation forms on the sensor Can be enabled or disabled gt Out of limit value alarm Used to specify the normal range for humidity temperature and the calculated parameter depending on the user application Can be configured enabled or disabled Out of limit values trigger a digital alarm which can be also be seen on the optional display Bad sensor alarm Built in function Cannot be disabled A bad humidity or temperature sensor triggers a digital alarm which can be also be seen on the optional display gt Fail safe mode Used to specify a safe fixed value for humidity and for temperature in the event of a sensor failure Can be configured enabled or disabled 4 2 X Factory default settings Notes o Configuration of the HF7 by the user and access to its functions requires a PC with the ROTRONIC HW4 software version 2 1 1 or higher installed Service cable AC3006 or AC3009 is used to connect the HF7 service connector to a USB port of the PC see
20. ion of condensation water at the level of the sensor leads Install the probe so that the probe tip is looking downward If this is not possible install the probe horizontally AER OK Bee 5 2 Enclosure installation HF7 type N and W 100 The HF7 enclosure consists of a base and a cover held together with 4 screws Remove the cover to gain access to the 4 holes that are provided to attach the enclosure to a mounting surface Mounting Hole 5 3 Probe installation HF7 type N D and A Type N and D use parts AC1303 M compression fitting and AC1305 flange to hold and seal the probe when mounted through a wall see Accessories Type A use parts AC1304 M compression fitting and AC1306 flange to hold and seal the probe when mounted through a wall see Accessories o The enclosure of the HF7 type D and A does not require any additional support 2009 2011 Rotronic AG E M HF7 V1_24 E M H F7 V1 24 Rotronic AG Bassersdorf Switzerland Document code Unit HygroFlex HF7 Humidity Temperature Instruction Manual Transmitters User Guide Document Type Page 11 0f23 Document title 6 Electrical installation 6 1 General wiring guidelines Power supply wiring Heavy machinery and instrumentation should not share the same power supply wiring If this cannot be avoided noise filters and surge protectors should be used Most UPS devices have those features already integrated General guideli
21. nce lines leading into EX rated areas 2009 2011 Rotronic AG E M HF7 V1_24 E M H F7 V1 24 Rotronic AG Bassersdorf Switzerland Document code Unit HygroFlex HF7 Humidity Temperature Instruction Manual Transmitters User Guide Document Type Page 120f23 Document title 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 optic cables If this is not possible use copper cables that are suitable for underground installation 6 2 Cable grip and cable specifications The HF7 is supplied either with one M16 sealing cable grip or with a 72 conduit adapter The M16 cable grip provides effective sealing only with cables having the proper outside diameter Preferably use a cable with an outside diameter of 6 to 7 mm 0 236 to 0 275 inch with 18 AWG wires 6 3 Wiring and terminal block diagrams 6 3 1 HF72 2 wire loop powered transmitter Electrical diagram The maximum permissible cable length connecting the HF72 to other devices is determined by the total resistance resulting from the addition of the cable resistance and that of the devices connected in series with the unit This resistance should not exceed 500 ohms 2009 2011 Rotronic AG E M HF7 V1_24 Rotronic AG E M HF V1 24 Bassersdorf Switzerland Document code Unit HygroFlex HF7 Humidity Temperature Instruction Manual
22. nes for signal cables The following guidelines are derived from European Standard EN 50170 for the transmission of signals by copper wires When planning an installation the rules provided by EN 50170 should be followed under consideration of local circumstances to determine the position of machines and equipment All ROTRONIC products are tested for Electromagnetic Compatibility according to EMC Directive 2004 106 EG and following European standards EN 61000 6 1 2001 EN 61000 6 2 2005 EN 61000 6 3 2005 EN 61000 6 4 2001 A11 Whenever the level of electromagnetic interference is expected to be high both the instruments and signal cables should be placed as far away as possible from the source of interference In general signal cables should be installed in bundles or channels conduits separate from other cables as indicated in the table below Bus signals such as RS485 Data signals for PCs printers etc shielded analog inputs unshielded direct current lt 60V in common bundles or channels conduits shielded process signals lt 25 V unshielded alternate current lt 25V coaxial cables for CRT monitors direct current from 60 V to 400 V unshielded in separated bundles or channels alternate current from 25V to 400 V conduits without minimum distance unshielded direct and alternate current gt 400 V unshielded in separated bundles or channels Telephone lines conduits without minimum dista
23. s that the probe and its sensors be at exactly the temperature of the environment to be measured Because of this the location where you choose to install the probe can have a significant effect on the performance of the instrument The following guidelines should guarantee good instrument performance a Selecta representative location install the probe where humidity temperature and pressure conditions are representative of the environment to be measured b Provide good air movement at the probe air velocity of at least 200 ft minute 1 meter second facilitates adaptation of the probe to changing temperature C Avoid the following 1 Close proximity of the probe to a heating element a cooling coil a cold or hot wall direct exposure to sun rays etc 2 Close proximity of the probe to a steam injector humidifier direct exposure to precipitation etc 3 Unstable pressure conditions resulting from excessive air turbulence d Immerse as much of the probe as possible in the environment to be measured HF7 type N with 120 mm probe length to avoid measurement errors caused by temperature gradients fully immerse the probe barrel in the environment to be measured 2009 201 1 Rotronic AG E M HF7 V1 24 Rotronic AG E M HF V1 24 Bassersdorf Switzerland Document code Unit Page 10 of23 HygroFlex HF7 Humidity Temperature Instruction Manual Transmitters User Guide Document Type Document title e Prevent the accumulat
24. sistance of the devices 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 Minimum load requirements apply to the external device or circuit connected to the HF7 transmitter These requirements are defined in the Operation chapter Electrical diagram for current outputs The maximum permissible cable length connecting the unit to other devices is determined by the total resistance resulting from the addition of the cable resistance and that of the devices connected in series with the unit This resistance should not exceed 500 ohms 2009 201 1 Rotronic AG E M HF7 V1 24 E M H F7 V1 24 Rotronic AG Bassersdorf Switzerland Document code Unit HygroFlex HF7 Humidity Temperature Instruction Manual Transmitters User Guide Document Type Page 150f23 Document title Terminal block diagram Terminals Description Ground tied with other GND e Power supply or neutral K2 2 GND tied with other GND Measuring humidity or temperature only Operation of the HF73 does not require both current loops to be closed When using the HF73 to measure either humidity only or temperature only close only the loop that is being used Using the ROTRONIC HWA software any unused output of the HF73 can be disabled 6 3 3 Grounding all models We generally recommend grounding th
25. tructions for using the ROTRONIC calibration devices and humidity standards are provided in document E M CalBasics o Forfurther instructions see HW4 manual E M HW4v3 A2 001 8 4 Cleaning or replacing the dust filter Depending on the conditions of measurement the filter should be checked from time to time Corroded discolored or clogged filters should be replaced The probe of the HF7 has a removable filter cartridge Simply replace the cartridge leave the metal base on the probe 8 5 Validation of the output signals transmission If so desired transmission of the HF7 output signals can be validated by using the simulator function The HWA software is required to enable and configure this function When this function is enabled the HF7 generates fixed digital and analog signals as specified by the user For instructions see document E M HW4v3 F2 007 2009 2011 Rotronic AG E M HF7 V1_24 Rotronic AG E M HF V1 24 Bassersdorf Switzerland Document code Unit Page 19 of 23 HygroFlex HF7 Humidity Temperature Instruction Manual Transmitters User Guide Document Type Document title 9 Firmware updates Firmware updates will be available on the ROTRONIC website for downloading Firmware files are given a 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 e Use the appropriate model of service cable
26. y the HF7 series offers the following functions User configurable settings Calculation of the dew or frost point Humidity temperature calibration and adjustment Simulator mode Automatic humidity sensor test and drift compensation Fail safe mode Data recording The ability for the user to easily update the AirChip 3000 firmware means that instruments of the HF7 series can be kept up to date regarding any future functionality improvement 2009 201 1 Rotronic AG E M HF7 V1 24 Rotronic AG E M HF V1 24 Bassersdorf Switzerland Unit Page 4of 23 Document code HygroFlex HF7 Humidity Temperature Instruction Manual Transmitters User Guide Document Type Document title 2 Mechanical configurations and dimensions Type W Wall Mount Type N Cable Probe S 100 ae 60 e e tf 7 S oj L 4 i E A 25 PS 15 ds i KH li m TI 70 a 265 L 150 i 2915 025 Type A Duct Mount 15 25 mm 100 Type D Duct Mount 15 mm Dimensions in mm 2009 2011 Rotronic AG E M HF7 V1_24 E M H F7 V1 24 Rotronic AG Bassersdorf Switzerland Document code Unit Page 5of 23 HygroFlex HF7 Humidity Temperature Instruction Manual Transmitters User Guide Document Type Document title 3 General description 3 1 Power supply Depending on the circuit type the HF7 requires the following power supply
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