Page 1 f 19 HygrMet MP Humidity Temperature Meterlgical Prbe User Guide
Page 2 f 19 Table f cntents 1 Overview... 3 2 Mechanical cnfiguratins and dimensins... 4 3 General descriptin... 5 3.1 Pwer supply... 5 3.2 Measured parameters... 5 3.3 Calculated parameters... 5 3.4 Output signals... 6 3.5 Analg utput signal type... 6 3.6 Service cnnectr... 6 3.7 Prbe... 6 4 User cnfigurable settings and functins... 6 4.1 Requirements fr cnfiguring the HygrMet MP... 7 4.2 Functin verview... 7 4.3 Factry default settings... 8 4.4 Interactin between the HygrMet MP and prbe functins... 9 5 Mechanical installatin... 10 5.1 General guidelines... 10 6 Electrical installatin... 10 6.1 General wiring guidelines... 10 6.2 Guidelines fr RS-485 wiring (HygrMet MP 3-wire)... 11 6.3 Wiring clr cde... 11 6.4 Electrical diagram... 12 7 Operatin... 13 7.1 Analg utputs... 13 7.2 RS-485 serial interface... 13 8 Maintenance... 14 8.1 Service cable... 14 8.2 Lcatin f the service cnnectr (mini USB type)... 14 8.3 Peridic calibratin check f the HC2-S3 prbe... 14 8.4 Cleaning r replacing the prbe dust filter... 15 8.5 Validatin f the utput signals transmissin... 15 9 Firmware updates... 15 10 Technical data... 16 10.1 Specificatins... 16 10.2 Dew pint accuracy... 18 11 Accessries... 18 12 Supprting dcuments... 18 13 Dcument releases... 19
Page 3 f 19 Applicability: This manual applies t the HygrMet MP prbe series with firmware versin 1.x, where 1.x can be 1.0, 1.1, etc. Changes t the last digit f the versin number reflect minr firmware changes that d nt affect the manner in which the instrument shuld be perated. 1 Overview The HygrMet MP prbe uses the digital signals frm a HygrClip HC2-S3 digital plug-in prbe t measure humidity and temperature at cnditins within the range f 0 t 100 %RH and -40 t 80 C. In additin the HygrMet MP can be cnfigured t calculate a psychrmetric value such as dew pint, frst pint, enthalpy, etc. The HygrMet MP perates frm a DC vltage surce and is designed fr use in weather statins where pwer is available n a cntinuus basis. The HygrClip HC2-S3 digital plug-in prbe features the well prven ROTRONIC Hygrmer TM IN1 capacitive humidity sensr and a precisin Pt100 RTD. Calibratin data, sensr characteristics, serial number, etc., are retained in a nn-vlatile memry within the prbe. The HC2-S3 is fully interchangeable and can be replaced in secnds withut lss f accuracy. As an ptin, the HygrMet MP prbe can be rdered with an additinal fast respnse temperature prbe (Pt100 RTD) that is directly accessible by means f 4-wires. The HygrMet MP is available in 3-wire circuit type. This versin prvides tw analg utput signals crrespnding t any tw f the fllwing: relative humidity, temperature r calculated value such as dew pint, enthalpy, mixing rati, etc. The 3-wire versin features a RS-485 interface fr the digital transmissin f all 3 signals: relative humidity, temperature and calculated parameter. Based n the ROTRONIC AirChip 3000 digital technlgy the cmbinatin f HygrMet MP and HC2-S3 2 prbe ffers the fllwing user functins: User cnfigurable settings Calculatin f psychrmetric parameters such as the dew r frst pint Humidity temperature calibratin and adjustment Simulatr mde Autmatic humidity sensr test and drift cmpensatin Sensr failure mde Data recrding The ability fr the user t easily update bth the HygrMet MP and HygrClip 2 prbe firmware means that bth devices can be kept up-t-date regarding any future functinality imprvement.
Page 4 f 19 2 Mechanical cnfiguratins and dimensins HygrMet MP with HC2-S3 prbe HygrMet MP with HC2-S3 prbe and additinal Pt100 RTD prbe
Page 5 f 19 3 General descriptin 3.1 Pwer supply 15 t 24 VDC With bth utput circuits clsed, the maximum current cnsumptin is 50 ma. Depending n the type f analg utput signal, the minimum supply vltage can be reduced as fllws: 0 1 V utputs: 5 VDC minimum 0 5 V utputs: 10 VDC minimum 3.2 Measured parameters The HygrClip HC2-S3 prbe used with the HygrMet MP measures relative humidity with a ROTRONIC Hygrmer IN1 capacitive sensr and temperature with a Pt100 RTD. 3.3 Calculated parameters Using the ROTRONIC HW4 sftware, the HygrMet MP can be cnfigured by the user t calculate ne f the fllwing parameters: Dew pint (Dp) abve and belw freezing Frst pint (Fp) belw freezing and dew pint abve freezing Wet bulb temperature (Tw) Enthalpy (H) Vapr cncentratin (Dv) Specific humidity (Q) Mixing rati by weight (R) Vapr cncentratin at saturatin (Dvs) Vapr partial pressure (E) Vapr saturatin pressure (Ew) Nte: sme f the abve parameters depend n the value f the barmetric pressure. Using the ROTRONIC HW4 sftware, a fixed barmetric pressure value can be specified. Fr instructins see the fllwing HW4 manual: E-M-HW4v2-F2-014
Page 6 f 19 3.4 Output signals HygrMet MP: 3-wire versin With the ROTRONIC HW4 sftware any f the tw analg utput signals can be made t crrespnd t ne f the fllwing: Relative humidity Temperature Calculated parameter Any utput can als be disabled. The scale f each analg utput can be set within the numerical limits f -999.99 and 9999.99. The D/A cnverters used t generate the analg utput signals feature a 16-bit reslutin. HygrMet MP 3-wire versin: this versin ffers a RS-485 digital interface in additin t the tw analg utput signals. Making use f this interface allws the simultaneus transmissin f relative humidity, temperature and calculated parameter. 3.5 Analg utput signal type The HygrMet MP 3-wire versin can be rdered with the fllwing utput signal types: a) Current utputs: 0 20 ma r 4 20 ma b) Vltage utputs: 0 1 V, 0 5 V r 0 10 V Nte: the analg signal type is cnfigured at the factry and cannt be changed by the user. 3.6 Service cnnectr The HygrMet MP has an internal service cnnectr (mini-usb type). This cnnectr prvides access t the HygrMet MP UART digital interface (Universal Asynchrnus Receiver Transmitter) and is used t cnnect the HygrMet MP with a service cable t a PC running the ROTRONIC HW4 sftware. See Maintenance fr the lcatin f the service cnnectr and fr the type f service cable t be used. The service cnnectr is used t cnfigure the HygrMet MP and t and update its firmware as necessary. 3.7 Prbe The HygrMet MP is nrmally used with the HC2-S3 prbe and is cmpatible with all available mdels f HygrClip 2 prbes. Fr detailed infrmatin n the HygrClip 2 prbes see dcument E-M-HC2 Prbes-V1. 4 User cnfigurable settings and functins The HygrMet MP ships cnfigured as specified n the custmer rder. The HygrMet MP can be installed and used just as any cnventinal humidity and temperature prbe and mst users will never need t use the HygrMet MP cnfigurable settings and functins. Use f the RS-485 digital interface may require cnfiguratin by the user f the RS-485 netwrk address. Making use f the HygrMet MP and HC2-S3 prbe cnfigurable settings and functins is entirely up t the user and the apprpriate settings depend n the user applicatin. We have prvided belw a shrt descriptin f the HygrMet MP and HC2-S3 and prbe functins and als indicated the factry default settings.
Page 7 f 19 4.1 Requirements fr cnfiguring the HygrMet MP Cnfiguratin f the HygrMet MP by the user and access t its functins requires the fllwing: PC with the ROTRONIC HW4 sftware (versin 2.3.0 r higher) installed. Service cable AC3006 t cnnect the HygrMet internal service cnnectr t a USB prt f the PC. DC vltage surce t pwer the HygrMet MP Nte: The RS-485 interface f the HygrMet MP 3-wire versin can be used as an alternative t the service cnnectr t cnfigure the HygrMet MP after cnnecting the HygrMet MP t a RS-485 netwrk mnitred by a PC with the HW4 sftware. 4.2 Functin verview MEASUREMENT ACCURACY AND RELIABILITY (PROBE FUNCTIONS) AirChip 3000 Functins Humidity / temperature adjustment Autmatic humidity sensr test and ptinal drift cmpensatin Descriptin 1-pint r multi-pint humidity calibratin r adjustment 1-pint r 2-pint temperature calibratin r adjustment Generate a time stamp fr calibratins and adjustments Retain and view last adjustment date and adjustment values Generate calibratin and adjustment prtcls Tests the humidity sensr fr drift caused by cntaminants and can be used t autmatically apply a crrectin. The test is autmatically carried ut at regular intervals f time. Can be cnfigured, enabled, r disabled. The humidity sensr status can be verified either with the HW4 sftware r with the instrument display (if available) and is shwn as Gd, SQtuned (crrected fr drift) r Bad (defective) Data recrding The data recrding functin differs frm a true data lgging functin in the sense that the AirChip 3000 des nt time stamp the data. The data recrding functin can be use t investigate events such as a sensr malfunctin as well as t retrieve data that wuld therwise be lst Start r stp data recrding - up t 2000 value pairs (%RH and temperature). Starting a recrding sessin erases all previusly recrded data The recrding mde and lg interval can be specified When the device is pwered ff, the recrding sessin is paused but nt ended As lng as the recrding sessin has nt been ended, the device autmatically resumes recrding data when pwered up again The recrded data can be dwnladed t a PC with the HW4 sftware, time stamped and viewed MEASUREMENT LOOP VALIDATION Functins Simulatr mde Descriptin Used t make the HygrMet generate fixed values fr the humidity, temperature and calculated parameter. Can be
Page 8 f 19 cnfigured, enabled r disabled DEVICE SAFEGUARDS Functins Device write prtectin Descriptin Used t prtect the HygrMet with a passwrd t prevent unauthrized digital access by a digital user. Can be cnfigured, enabled r disabled PROCESS PROTECTION AND PROTECTION OF OTHER DEVICES AirChip 3000 Functins Limit humidity utput t 100 %RH Out-f-limit value alarm Descriptin This prbe functin is used t prevent the humidity signal frm exceeding 100 %RH when cndensatin frms n the sensr. Can be enabled r disabled Used t specify the nrmal range fr humidity, temperature and the calculated parameter depending n the user applicatin. Can be cnfigured, enabled r disabled Bad sensr alarm Fail safe mde Out-f-limit values trigger a digital alarm which can be als be seen n the ptinal display This is a built-in prbe functin. Cannt be disabled A bad humidity r temperature sensr triggers a digital alarm, prvided that the HygrMet is set t mnitr prbe alarms Used t specify a "safe" fixed value fr humidity and fr temperature (HygrMet r prbe) in the event f: Lss f cmmunicatin with the prbe (HygrMet functin) Sensr failure (prbe functin) Can be cnfigured, enabled r disabled 4.3 Factry default settings Cnfigurable Settings Factry default system (Metric r English) As per rdering cde Analg signal type (4 20 ma r ther) As per rdering cde Psychrmetric calculatin As per rdering cde Fixed pressure value 1013.25 hpa r 29.92 In Hg Output 1 parameter, scale and unit As per rdering cde (%RH r ther) Output 2 parameter, scale and unit Temperature, unit as per rdering cde Cmmunicatin prtcl RO-ASCII RS-485 address 0 Device name Instrument mdel Functins Humidity / temperature adjustment Device write prtectin Limit humidity utput t 100 %RH Factry default Disabled (HygrMet and prbe) Enabled (prbe)
Page 9 f 19 Out-f-limit value digital / display alarm Data recrding (prbe) Autmatic humidity sensr test Humidity sensr drift cmpensatin Fail safe mde Mnitr prbe alarms Lss f cmmunicatin with prbe Simulatr mde Disabled (HygrMet and prbe) Enabled (lp mde 10 min. interval) Disabled (prbe) Disabled (prbe) Disabled (prbe) Enabled Disabled (HygrMet) Disabled (HygrMet and prbe) Fr a detailed descriptin f all AirChip 3000 main functins see dcument E-T-AC3000-DF-V1 Instructins regarding the cnfiguratin f the HygrMet MP and prbe as well as access t the functins are prvided in the fllwing manuals: E-M-HW4v2-F2-014 E-M-HW4v2-F2-001 E-M-HW4v2-Main ( 6.5) E-M-HW4v2-DR-001 E-M-HW4v2-A2-001 E-M-AC3000-CP The factry default setting fr dew / frst pint calculatin is frst pint belw freezing 4.4 Interactin between the HygrMet MP and prbe functins It is imprtant t nte that when used tgether, the HygrMet MP transmitter and HC2 prbe (HygrClip 2) cnstitute a 2-cmpnent system. Each system cmpnent has its wn micrprcessr, firmware and functins. Sme f these functins are unique t each system cmpnent. Other functins are fund in bth cmpnents. The functins and settings f the HygrMet MP (HM) and HygrClip 2 prbe (HC2) perate tgether as indicated belw: Functin / Setting HM HC2 Ntes Device prtectin X X Individual t the HygrMet and HC2 prbe RS-485 address X X Individual t the HygrMet and HC2 prbe Device Name X X User defined descriptin The device name f the HC2 prbe is nt displayed by HW4 and is replaced with the HygrMet Input Name Calculatin X X Psychrmetric calculatin HygrMet setting verrides HC2 prbe setting Data refresh rate X This setting has n effect n the HygrMet and prbe. Depending n the mdel, the data refresh rate is as fllws: Simulatr functin X X HygrMet 3-wire: typically 1 s Generates fixed humidity and / r temperature value When enabled, the HygrMet settings verride the HC2 prbe settings
Page 10 f 19 Functin / Setting HM HC2 Ntes system X X Out-f-limits value alarm X X Analg utputs X X The HygrMet setting verrides HC2 prbe setting regarding the HygrMet signals. The HC2 prbe settings still apply when the prbe is used alne Make sure t use the same humidity symbl and the same temperature unit fr bth the HygrMet and prbe. The HygrMet settings are independent frm the HC2 prbe settings. The HC2 prbe settings have an effect nly when the HygrMet is enabled t mnitr alarms generated by the prbe When ut-f-limit values have been defined fr the same parameter fr bth the HygrMet and prbe, any alarm is triggered based n the narrwest set f limits (assuming that the HygrMet has been set t mnitr prbe alarms). Parameter and scale The HC2 prbe settings have n effect n the HygrMet 5 Mechanical installatin 5.1 General guidelines Install the HygrMet MP s that the lcal cnditins at the sensrs are typical f the envirnment t be measured: a) Use either a shield r a shelter t prtect the prbe and sensrs frm direct expsure t slar radiatin and precipitatin. Several shields are available frm ROTRONIC (see specificatins). b) In an pen field, install the prbe at least 6.6 feet (tw meters) abve grund. Increase this distance if the grund surface is cncrete r black tp (such as abve a rf). 6 Electrical installatin 6.1 General wiring guidelines Pwer supply wiring Heavy machinery and instrumentatin shuld nt share the same pwer supply wiring. If this cannt be avided, nise filters and surge prtectrs shuld be used. Mst UPS devices have thse features already integrated. General guidelines fr signal cables The fllwing guidelines are derived frm Eurpean Standard EN 50170 fr the transmissin f signals by cpper wires. When planning an installatin, the rules prvided by EN 50170 shuld be fllwed under cnsideratin f lcal circumstances t determine the psitin f machines and equipment. All ROTRONIC prducts are tested fr Electrmagnetic Cmpatibility accrding t EMC Directive 2004/106/EG and fllwing Eurpean standards:
Page 11 f 19 - EN 61000-6-1: 2001, EN 61000-6-2: 2005 - EN 61000-6-3: 2005, EN 61000-6-4: 2001 + A11 Whenever the level f electrmagnetic interference is expected t be high, bth the instruments and signal cables shuld be placed as far away as pssible frm the surce f interference. In general, signal cables shuld be installed in bundles r channels / cnduits, separate frm ther cables as indicated in the table belw: Bus signals such as RS485 Data signals fr PCs, printers etc. shielded analg inputs unshielded direct current (<= 60V) shielded prcess signals (<= 25 V) unshielded alternate current (<= 25V) caxial cables fr CRT mnitrs in cmmn bundles r channels / cnduits direct current frm 60 V t 400 V (unshielded) alternate current frm 25V t 400 V (unshielded) in separated bundles r channels / cnduits, withut minimum distance direct and alternate current > 400 V (unshielded) Telephne lines lines leading int EX-rated areas in separated bundles r channels / cnduits, withut minimum distance Lightning prtectin Cabling in areas with a risk f lightning requires a lightning prtectin. Fr cabling undergrund in between buildings, we recmmend the use f special fiber ptic cables. If this is nt pssible, use cpper cables that are suitable fr undergrund installatin. 6.2 Guidelines fr RS-485 wiring (HygrMet MP 3-wire) See dcument E-DV04-RS485.01: RS485 Netwrk Installatin and Start-up Guidelines 6.3 Wiring clr cde The HygrMet MP is supplied with 3m (9 ft) f PUR cable with tinned ends. Befre cnnecting the pwer, please make sure that there is n wiring errr. Imprper wiring may damage the HygrMet MP. T facilitate maintenance f the HygrMet MP, keep the prbe cable shrt. D nt replace the cable supplied with the prbe with a much lnger cable. If a lng length f cable is required, use an extensin cable with a maximum length f up t 330 feet (100 meters). When transmitting analg vltage signals ver a lng distance, yu shuld use separate wires fr pwer grund and fr each signal grund.
Page 12 f 19 6.4 Electrical diagram Electrical diagram fr vltage utputs The maximum permissible cable length can be determined under cnsideratin f the vltage drp caused by the current flwing t the devices cnnected t the unit. The vltage drp in the cable depends bth n cable resistance and n the equivalent resistance f the devices cnnected in parallel t the unit. The ttal resistance cnnected t each unit utput shuld be at least 1000 hms. Cable resistance shuld nt be mre than 1/1000 f the lad resistance. Electrical diagram fr current utputs The maximum permissible cable length, cnnecting the unit t ther devices, is determined by the ttal resistance resulting frm the additin f the cable resistance and that f the devices cnnected in series with the unit. This resistance shuld nt exceed 500 hms.
Page 13 f 19 Wiring clr cde Wire clr Gray Descriptin Pwer grund Green White n label Pwer supply (+) 5 24 VDC (depends n utput signal type) Output 1 (+) default: relative humidity r calculated parameter White labeled 2 Output 1 (-) A-GND 1 Brwn Output 2 (+) default: temperature Pink Output 2 (-) A-GND 2 Red Blue Black Purple Orange Yellw Cable shield RS485 (RXD) RS485 (TXD) Optinal: additinal Pt100 RTD prbe PT S Optinal: additinal Pt100 RTD prbe PT AS Optinal: additinal Pt100 RTD prbe PT R Optinal: additinal Pt100 RTD prbe PT AR Drain shuld be cnnected t pwer supply (-) r t an earth grund Measuring humidity r temperature nly Operatin f the HygrMet MP des nt require bth current lps t be clsed. When using the HygrMet MP t measure either humidity nly r temperature nly, clse nly the lp that is being used. Using the ROTRONIC HW4 sftware, any unused utput f the HygrMet MP can be disabled. 6.4.1 Grunding (all mdels) Operatin f the HygrMet MP des nt require that the unit be electrically grunded. Hwever, we strngly recmmend cnnecting t an earth grund the (-) side f the supply vltage t the prbe. 7 Operatin 7.1 Analg utputs Use the HW4 sftware t cnfigure the HygrMet MP as desired, cmplete the mechanical and electrical installatin, make the electrical cnnectins prbe and simply pwer up the HygrMet MP. 7.2 RS-485 serial interface Instructins fr using the HygrMet MP with a RS-485 netwrk are prvided in the fllwing manuals: E-M-HW4v2-Main ( 6.5), E-M-HW4v2-F2-014 and E-DV04-RS485.01. Ntes:
Page 14 f 19 Instruments cnnected t the same RS-485 netwrk must use the same baud rate and each instrument must be given a unique RS-485 address (the address requirement applies t the HygrMet MP but nt t its prbe) RS-485 Cmpatibility: The cmmunicatins prtcl used by the HygrMet MP is the RO-ASCII prtcl. This prtcl is nt cmpatible with the prtcl used by the previus generatin f ROTRONIC prducts. D nt cnnect legacy prducts and the HygrMet MP t the same RS-485 multi-drp netwrk. The specificatins f the RS-485 interface are as fllws: Baud rate : 19200 Parity : nne Data bits : 8 Stp bits : 1 8 Maintenance 8.1 Service cable Cable AC3006 is used t cnnect the HygrMet MP t a USB prt f a PC running the ROTRONIC HW4 sftware. The AC3006 cable des nt pwer the HygrMet MP and the HygrMet MP shuld be pwered separately. Prir t using this cable yu must install the ROTRONIC USB driver n the PC (available frm the HW4 CD r frm www.rtrnic-humidity.cm). Fr instructins see the HW4 manual E-M-HW4v2-Main ( 6.3) 8.2 Lcatin f the service cnnectr (mini USB type) WARNING: the service cnnectr is a UART interface with a mini-usb cnnectr type. D nt cnnect the service cnnectr directly t the USB prt f a PC r hub. The service cnnectr is lcated n the PCB f the HygrMet MP. T gain access t the service cnnectr prceed as fllws: a) Unscrew the curly cable grip frm the barrel f the HygrMet MP b) Slide back the sealing grmmet ver 15 cm (6 ) f cable c) Unscrew the barrel frm the bulkhead f the HygrMet MP d) Pull the barrel back t uncver the PCB 8.3 Peridic calibratin check f the HC2-S3 prbe Bth the Pt 100 RTD temperature sensr used in the HC2-S3 prbe and assciated electrnics are very stable and shuld nt require any calibratin after the initial factry adjustment. Lng term stability f the ROTRONIC Hygrmer humidity sensr is typically better than 1 %RH per year. Fr maximum accuracy, calibratin f the prbe shuld be verified every 6 t 12 mnths. Applicatins where the prbe is expsed t significant pllutin may require mre frequent verificatins. Using the HW4 sftware t adjust the prbe cnnected t the HygrMet MP:
Page 15 f 19 Use cable AC3006 t cnnect the service cnnectr f the HygrMet MP t a USB prt f a PC with the HW4 sftware installed. Nte that the ROTRONIC USB driver must be installed n the PC as explained in the HW4 manual E-M-HW4v2-Main. Pwer the HygrMet MP frm a DC vltage surce Start HW4 n the PC and search fr the HygrMet MP (HW4 Main Menu Bar > Devices and Grups > Search fr USB Masters). After finding the HygrMet MP with HW4, expand the device tree t see the HygrMet MP functins. Select Prbe and Prbe Adjustment. Fr further instructins see HW4 manual E-M-HW4v2-A2-001 8.4 Cleaning r replacing the prbe dust filter See dcument E-M-HC2 Prbes-V1 8.5 Validatin f the utput signals transmissin If s desired, transmissin f the HygrMet MP utput signals can be validated by using the simulatr functin. The HW4 sftware is required t enable and cnfigure this functin. When this functin is enabled the HygrMet MP generates fixed digital and analg signals as specified by the user. Fr instructins see dcument E-M-HW4v2-F2-014 9 Firmware updates Firmware updates will be available n the ROTRONIC website fr dwnlading. Firmware files are given a name that shws bth t which device the file applies and the versin number f the firmware. All firmware files have the extensin HEX. Prcedure fr updating the firmware: Use cable AC3006 t cnnect the service cnnectr f the HygrMet MP t a USB prt f a PC with the ROTRONIC HW4 sftware installed. Nte that the ROTRONIC USB driver must be installed n the PC as explained in the HW4 manual E-M-HW4v2-Main Pwer the HygrMet MP frm a DC vltage surce. Be sure t pwer the HygrMet MP during the entire firmware update prcess. Cpy the firmware update file frm the ROTRONIC website t the PC. Start HW4 sftware n the PC and search fr the HygrMet MP (HW4 Main Menu Bar > Devices and Grups > Search fr USB Masters). After finding the HygrMet MP, expand the device tree t see the HygrMet MP functins. Select Device Manager. In the Device Manager menu bar select Tls > Firmware Update. Fr instructins see dcument E-M-HW4v2-F2-014
Page 16 f 19 10 Technical data 10.1 Specificatins General Device type Circuit type Humidity temperature prbe with analg utput signals and RS485 interface 3-wire Pwer supply and cnnectins Supply vltage Nminal current cnsumptin Electrical cnnectins 15 24 VDC 0 1 V utputs: 5 24 VDC 0 5 V utputs: 10 24 VDC < 50 ma 3 m cable with tinned ends Plarity prtectin Prtective dide n V+ Humidity and temperature measurement See dcument E-M-HC2 Prbes > Specificatins Calculated parameters Psychrmetric calculatins Start-up time and data refresh rate Start-up time Data refresh rate Dew pint (Dp) abve and belw freezing Frst pint (Fp) belw freezing and dew pint abve freezing Wet bulb temperature (Tw) Enthalpy (H) Vapr cncentratin (Dv) Specific humidity (Q) Mixing rati by weight (R) Vapr cncentratin at saturatin (Dvs) Vapr partial pressure (E) Vapr saturatin pressure (Ew) 3 s (typical) 1 s (typical)
Page 17 f 19 Cnfigurable analg utputs Output 1 Factry default parameter Factry default scale Output 2 Factry default parameter Factry default scale Output 1 and Output 2 Signal type User cnfigurable scaling limits Shrt circuit tlerant Maximum external lad Minimum external lad Can be made t crrespnd t any parameter Relative humidity r dew / frst pint As per rdering cde Can be made t crrespnd t any parameter Temperature As per rdering cde 0 20 ma 4 20 ma 0 1 V 0 5 V 0 10 V (user cnfigurable) -999 +9999 engineering units Yes 500 Ω (current utput) 1000 Ω (vltage utput) 0 Ω (current utput) Digital interface Interface type RS-485 Service cnnectr Interface type Maximum service cable length UART (Universal Asynchrnus Receiver Transmitter) 5 m (16.4 ft) General specificatins HC2-S3 Prbe material Plycarbnate Prbe dust filter material Plyethylene Husing material POM Husing prtectin grade IP 65 Physical dimensins See Mdels Weight (with HC2-S3 prbe) 258 g (9.1 z) Cnfrmity with standards CE / EMC immunity Slder type Fire prtectin class FDA / GAMP directives 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 Lead free (RHS directive) Crrespnds t UL94-HB cmpatible
Page 18 f 19 Envirnmental limits Strage and transit Operating limits at electrnics Temperature limits at prbe Maximum humidity at sensr Maximum air velcity at prbe Critical envirnments -50 +70 C / -20...+70 C (mdels with display), 0 100 %RH, nn cndensing -40 +80 C, 0 100 %RH, nn cndensing Depends n prbe mdel 100 %RH 20 m/s (3,935 ft /min) Humidity sensr: as per DV04-14.0803.02 - Critical chemicals 10.2 Dew pint accuracy See dcument E-M-HC2 Prbes > Dew pint accuracy 11 Accessries Fr accessries and parts such as the HW4 cnfiguratin sftware, service cables, calibratin accessries and spare dust filters, please see dcument E-M-HC2-accessries 12 Supprting dcuments Dcument File Name E-M-HC2 Prbes-V1 Cntents HygrClip 2 (HC2) Humidity Temperature Prbes, User Guide E-M-HC2-accessries Accessries and parts fr prbes, indicatrs and transmitters E-T-AC3000-DF-V1 AirChip 3000 Descriptin and Main Functins E-M-HW4v2-DIR E-M-HW4v2-Main E-M-HW4v2-F2-014 List f the HW4 manuals HW4 sftware versin 2: General instructins and functins cmmn t all devices HW4 sftware versin 2: Device Manager HygrMet MP prbe E-M-HW4v2-F2-001 HW4 sftware versin 2: Device Manager HC2 prbe series E-M-HW4v2-A2-001 HW4 sftware versin 2: Prbe Adjustment functin AirChip 3000 devices E-M-HW4v2-DR-001 HW4 sftware versin 2: Data Recrding Functin AirChip 3000 Devices E-M-AC3000-CP AirChip 3000 Cmmunicatin Prtcl Optins E-DV04-RS485.01 E-M-CalBasics RS485 Netwrk Installatin and Start-up Guidelines Temperature and humidity calibratin basics Instructins fr using the ROTRONIC humidity standards
Page 19 f 19 Dcument File Name E-T-HumiDefs Cntents Humidity Definitins Nte: All dcument file names have an extensin crrespnding t the dcument release number. This extensin is nt shwn in the abve table. 13 Dcument releases Dc. Release Date Ntes _10 Dec. 4, 2009 Original release