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Vaisala HUMICAP HMT120 Series User Manual

Other manuals for HUMICAP HMT120 Series: Quick Manual, Quick manual
Manual is about: Humidity and Temperature Transmitter

Summary of HUMICAP HMT120 Series

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    M211244en-c user guide vaisala humicap â humidity and temperature transmitter series hmt120

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    Published by vaisala oyj street address: vanha nurmijärventie 21, fi-01670 vantaa, finland mailing address: p.O. Box 26, fi-00421 helsinki, finland phone: +358 9 8949 1 visit our internet pages at www.Vaisala.Com . © vaisala oyj 2018 no part of this manual may be reproduced, published or publicly di...

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    Table of contents 1. About this document ................................................................................... 7 1.1 version information .......................................................................................... 7 1.2 related manuals .......................................

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    5. Maintenance ....................................................................................................48 5.1 removing and fastening fixed humidity probe ........................................48 5.2 removing and fastening remote humidity probe ................................... 49 5.3...

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    Index ...............................................................................................................................83 warranty ....................................................................................................................... 85 technical support .................

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    List of figures figure 1 main transmitter parts......................................................................................11 figure 2 opening the transmitter cover.....................................................................13 figure 3 wall mounting measurements......................

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    List of tables table 1 document versions.............................................................................................7 table 2 related manuals...................................................................................................7 table 3 applicable patents..................

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    Table 45 mechanical specifications...............................................................................73 table 46 spare parts and accessories..........................................................................74 table 47 temperature dependence for a, m, and tn..........................

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    1. About this document 1.1 version information table 1 document versions document code date description m211244en-c january 2018 this version. Factory calibration uncertainty specification updated. Spare parts list updated. Document template updated, content structure revised. M211244en-b june 2013 ...

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    Note highlights important information on using the product. Tip gives information for using the product more efficiently. Lists tools needed to perform the task. Indicates that you need to take some notes during the task. 1.4 trademarks vaisala â and humicap â are registered trademarks of vaisala oy...

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    2. Product overview 2.1 introduction to hmt120 hmt120 measures relative humidity and temperature and converts it to analog current loop outputs. Other quantities, such as dewpoint (t d ) can be calculated from the basic rh and t values according to the device configuration. Hmt120 is powered with a ...

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    2.4 optional display the transmitter is also available with an optional graphical 128*64 pixel resolution lcd display. The display shows the measurement results of selected parameters in selected units (defined when ordering the transmitter). The parameters are displayed simultaneously on two separa...

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    2.7 transmitter parts figure 1 (page 11) shows the main transmitter parts. On the left is a remote probe model without display, and on the right is a fixed probe model with the optional display. 2 5 3 4 1 figure 1 main transmitter parts 1 transmitter enclosure 2 probe cable 3 hmp110 probe 4 plastic ...

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    2.8 safety the transmitter delivered to you has been tested for safety and approved as shipped from the factory. Note the following precautions: do not modify the unit or use it in ways not described in the documentation. Improper modification may lead to safety hazards, equipment damage, failure to...

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    3. Installation 3.1 opening the transmitter cover figure 2 opening the transmitter cover to open the transmitter cover: 1. If the transmitter is not mounted already, hold it against a flat surface. 2. Push on the cover with your thumb, and pull the bottom part of the cover towards yourself. Chapter ...

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    3.2 wall mounting to mount the transmitter on a wall: 1. Remove the transmitter cover. 2. Make sure that the transmitter is correctly aligned and attach it directly to the wall with up to four screws (not included in the package). Figure 3 (page 14) shows the distances between attachment points. It ...

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    3.3 installation with rain shield the installation kit with rain shield (vaisala order code: 215109) includes a metal mounting plate and a rain shield for the transmitter. Figure 4 installation with rain shield to install the transmitter with the rain shield: 1. Fasten the metal mounting plate to th...

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    3.4 installation with radiation shield 1 1 2 1 3 1 4 1 5 dtr504 with probe installation kit (vaisala order code: dtr504a) includes the rain/ solar radiation shield dtr504 and a plastic installation support for the humidity probe. If you already have the dtr504 shield and need only the installation s...

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    3.5 duct installation kit the duct installation kit includes a plastic pipe with a flange (vaisala order code: 215619). To install the hmp110 probe with the duct installation kit, drill a hole to the duct wall, assemble the probe to the duct installation kit, slide the probe head through the hole, a...

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    3.5.1 probe assembly with duct installation kit 1 2 3 figure 7 probe assembly with duct installation kit 1 hmp110 2 duct installation kit 3 probe cable 1. Slide the probe cable through the duct installation kit plastic pipe. 2. Attach the probe cable to the hmp110 humidity probe. 3. Attach probe ass...

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    3.5.2 drilling instructions for duct installation kit 42 Ø2 4 Ø3.2 1 3 2 figure 8 drilling instructions 1 mounting screw 2 tension screw 3 hmp110 assembled in duct installation kit plastic pipe to drill the holes for the duct installation kit: 1. Use a 24-mm drill bit to drill a hole to the duct wal...

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    Figure 9 optional probe mounting clamp attaching the probe mounting clamp to a conductive wall material should be avoided, since the potential galvanic connection to the power supplies and uncontrolled earth current loops could cause measurement errors or even damage to the transmitter. Caution! 3.7...

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    3.8 connections figure 11 (page 21) shows the main parts of the hmt120 component board, including the wiring connectors. Service port shld ch1- ch1+ ch2- ch2+ c a l rh t adj + 1 2 3 4 5 figure 11 hmt120 component board 1 optional lcd display 2 indicator leds 3 adjustment buttons 4 service port 5 fie...

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    3.8.1 wiring 1 shld 2 ch1- 3 ch1+ 4 ch2- 5 ch2+ ma ma - + - + 10 ... 30 vdc 10 ... 30 vdc figure 12 isolated current loop wiring table 4 wiring table terminal 1) current output (2-wire, ch2 isolated) 1 cable shield (optional) 2 ch1- (signal and power supply -) 3 ch1+ (signal and power supply +) 4 ch...

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    4. Serial line operation 4.1 using the service port the transmitter's motherboard has an 8-pin rj-45 connector for service use. The service port uses rs-232 signaling levels. Vaisala offers an optional usb cable (vaisala order code 219685) for connecting the transmitter to your computer. The service...

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    2. Open devices and printers from the windows â start menu. Use search to find it if necessary (search for "devices"). 3. Locate the cable in the list of devices: • if the device is listed as vaisala usb device with a com port number in brackets, the cable is ready for use. Note the com port number,...

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    The steps below describe how to connect to the transmitter using the putty terminal application for windows and a usb computer connection cable. 1. If you have not used the vaisala usb cable before, install the driver before attempting to use the cable. 2. Connect the usb cable between your computer...

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    7. To open the connection window and start using the serial line, select open . If putty is unable to open the serial port you selected, it shows you an error message instead. If this happens, restart putty and check the settings. 4.5 list of serial commands all commands can be issued either in uppe...

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    Command description frestore restore all transmitter settings to factory defaults help list available commands intv set/show the continuous output interval r start continuous outputting reset reset transmitter restore restores the latest saved settings s stop continuous outputting save save changed ...

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    Syntax description example: ? Device name : hmt120 sw name : hmt120 sw model : hmt130 sw version : 0.9.3.389 serial number : "f2220101" address : 0 unit : metric ch1 status : on ch2 status : on probe name : "hmp110" probe sw : "1.01.1" probe sw date : "" probe sn : "f0740011" table 8 calcs command s...

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    Table 9 cdate command syntax description cdate show calibration date. Calibration refers to the calibration of the transmitter's analog outputs. Cdate [yyyymmdd] set a new calibration date. Yyyy-mm-dd = year (yyyy), month (mm) and day (dd) of calibration example: >cdate calibrated : "not set" > exam...

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    Syntax description example (set a new information text): ctext calibration lab 2 calib. Info: "calibration lab 2" > table 11 aout command syntax description aout the aout command shows the following information: • analog out mode is the output mode for the channel, for example 0 ... 10 v. • error le...

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    Syntax description example (no active errors): >aout *** analog output 1 *** ch1 analog out mode : 4_20ma ch1 notification : on ch1 error level : 3.6 ch1 status : on ch1 quantity : rh rh lo : 0 rh hi : 100 rh : 23.32 % current : 7.73 ma *** analog output 2 *** ch2 analog out mode : 4_20ma ch2 notifi...

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    Syntax description example: vers hmt120 / 0.1.0.103 4.7 serial line output and communication table 14 r command syntax description r s use the r command to start the continuous outputting of measurement values as an ascii text string to the serial line. The output always includes the readings of the...

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    Syntax description example: ... Rh= 25.10% t= 24.77'c rh= 25.12% t= 24.96'c s table 16 intv command syntax description intv use the intv command to show or set the output interval of the serial line measurement messages (applies when r command or run mode is used). The shortest output interval is on...

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    Syntax description example: send rh= 25.12 % t= 24.91 'c > 4.8 calibration commands serial commands that are related to calibration are described in this section. For the actual calibration procedures, see calibration and adjustment overview (page 52) . Table 18 crh command syntax description crh us...

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    Syntax description example 3: no calibration, only updating the value >crh rh: 20.28000200 ref1 ? Rh: 20.14000000 ref1 ? Calibration terminated with esc > table 19 crhclr command syntax description crhclr use the crhclr command to restore the probe rh factory calibration. Example: >crhclr ok > table...

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    Syntax description example 2: 2-point calibration >ct t 22.0007 ref1 ? 22 press enter to continue or esc to exit t 44.9847 ref2 ? 45 ok > example 3: no calibration, only updating the value >ct t 22.0007 ref1 ? T 22.0145 ref1 ? Calibration terminated with esc > table 21 ctclr command syntax descripti...

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    Syntax description example: >acal ch1 i1 (ma) ? 5.60 ch1 i2 (ma) ? 18.40 -1.40562890e+03 a0 1.41171900e+03 a1 ok ch2 i1 (ma) ? 5.60 ch2 i2 (ma) ? 18.40 -1.40562890e+03 a0 1.41171900e+03 a1 ok > the question mark is displayed after a certain stabilization time has expired. Only enter values after the...

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    Syntax description examples >seri baud p d s : 19200 n 8 1 > >seri 9600 e 7 1 baud rate : 9600 parity : e data bits : 7 stop bits : 1 >save saving settings...Done > table 24 echo command syntax description echo [on] [off] to show or set the terminal echo status, use the echo command. Examples: >echo...

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    Syntax description example: >smode stop output mode : stop > 4.10 measurement parameter configuration commands table 26 env command syntax description env [x.Xxxx] where x.Xxxx absolute pressure in the measuring environment. The default is 1.013 . The pressure unit is bar. Use the env command to sho...

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    4.11 analog output configuration commands table 27 aerr command syntax description aerr [level1 level2] where level 1 level 2 error levels for analog output channel use the aerr command to show or set the analog output error levels. Examples: >aerr ch1 error level : 3.6 ch2 error level : 3.6 > >aerr...

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    Syntax description examples: >asel ch1 quantity : rh rh lo : 0 rh hi : 100 ch2 quantity : t t lo : -60 t hi : 100 > >asel rh td ch1 quantity : rh rh lo : 0 rh hi : 100 ch2 quantity : td t lo : -40 t hi : 60 > >asel t td 0 60 -20 60 ch1 quantity : t t lo : 0 t hi : 60 ch2 quantity : td td lo : -20 td...

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    Table 29 atest command syntax description atest [val1 val2] where val1 val2 analog channel output value (ma) use the atest command to test the analog outputs. The atest command will force the output to the given value, which can then be measured with a calibrated multimeter. The atest command affect...

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    Syntax description examples: >dsel 1. Quantity : rh 2. Quantity : t > >dsel rh t 1. Quantity : rh 2. Quantity : t > >dsel t 1. Quantity : t > table 31 form command syntax description form where format is a formatting string that consists of one of the following fields: “” string constant x.Y value l...

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    Syntax description examples: >form "rh= " 3.2 u2 rh #r #n >send rh= 32.16 % > >form "t=" 4.1 u3 t \t "rh=" 3.2 u2 rh \r >send t= 22.5 'c rh= 29.12 % > >form "t=" 4.1 u3 t \t "rh=" rh \r >send t= 22.3 'c rh= 29.5% > >form 3.2 uuu "rh=" rh \t "t=" t \r >send rh= 27.99 % t= 23.34 'c > >form 3....

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    Syntax description example (no active errors): >errs no errors. > table 34 save command syntax description save use the save command to save changed settings to the transmitter flash memory. Most settings have to be saved or the changes are lost at the next reset or power down. The smode command sav...

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    Table 36 reset command syntax description reset use the reset command to reset the transmitter. Upon reset or power-up, the transmitter enters the serial mode that has been set with the smode command. After a reset, the configuration is loaded from flash memory. This configuration can be altered by ...

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    Syntax description examples: >unit unit : metric > >unit non_metric unit : non_metric > chapter 4 – serial line operation 47.

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    5. Maintenance 5.1 removing and fastening fixed humidity probe to remove or replace the probe: 1. Loosen the metal locking bushing by carefully turning it counterclockwise. 2. Remove the probe from the transmitter by pulling it gently downwards. 3. Attach the new probe to the 4-pin m8 panel connecto...

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    5.2 removing and fastening remote humidity probe to remove or replace the probe: 1. Unscrew the small sleeve that secures the probe in place at the end of the probe cable and pull out the probe. 2. Replace the probe and screw the small sleeve back on, securing the probe tightly in place. 1 2 3 figur...

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    5.3 testing analog outputs the transmitter has a built-in software function for testing analog outputs. To test the outputs: 1. Make sure the transmitter is not in adjustment mode (see calibration and adjustment overview (page 52) ). 2. Press the + adjustment button (see figure 11 (page 21) ). This ...

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    5.4 replacing the humicap sensor to replace the humicap â sensor on a fixed or remote probe: 1. Remove the filter (plastic grid or sintered stainless steel). 2. Remove the damaged sensor and insert a new one. 3. Recalibrate the probe. 4. If the filter is dirty, replace it to ensure maximum lifetime ...

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    6. Calibration and adjustment 6.1 calibration and adjustment overview you can calibrate and adjust the transmitter using the following tools: • push buttons on the transmitter motherboard • serial line commands • portable humidity meters hm70 and hmi41 a calibrator kit is needed for calibration agai...

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    6.2 push-button calibration c a l rh t adj + service port 485- gnd rel c a l rh t adj + on 1 2 485 term 485+ sgnd ch1 ch2 sheild vin- vin+ figure 16 adjustment buttons you can calibrate and adjust the transmitter with the adjustment buttons on the transmitter motherboard. The two-point humidity adju...

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    3. The transmitter is now in rh calibration state. Analog output and optional display will still follow the actual measured rh value. If you do not wish to perform the rh adjustment at this time, press the adj button one more time. The green indicator led turns off and the red indicator led begins t...

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    8. Insert the probe into a known reference temperature (if vaisala humidity calibrator hmk15 is not used) and let the temperature reading stabilize. Do not touch the adjustment buttons before the conditions have stabilized. 9. Using the - and + buttons, make the temperature offset adjustment by maki...

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    6.3 adjusting rh and t with mi70 hand-held indicator • mi70 hand-held indicator (included in, for example, the hm70 package) • mi70 connection cable (vaisala order code: 211339) you can check and adjust the transmitter's relative humidity and temperature measurement with the mi70 (hm70) hand-held hu...

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    5. Press the adj button on the transmitter's motherboard to open the adjustment mode. Both leds on the motherboard remain in off state and the text " starting adjustment mode for hmp110 " is shown on the mi70 display. In transmitters with the optional display, the text mi70 adjustment mode is shown ...

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    6.3.2 1-point adjustment using a calibrator complete the steps listed in adjusting rh and t with mi70 hand-held indicator (page 56) before continuing with this adjustment option. 1. Remove the filter from the transmitter's probe and insert the probe head into the reference condition. 2. Press adjust...

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    When making a 2-point adjustment, the difference between the two reference conditions must be at least 50 %rh. If the difference is cannot be made. 1. Remove the filter from the transmitter's probe and insert the probe head into the lower reference condition. 2. Press adjust to continue adjusting. 3...

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    4. Press ready when the reading has stabilized in the licl salt chamber (can take 30 minutes or more). You can follow the stabilization from the graph display. 5. Remove the probe from the licl salt chamber and insert the probe head into the nacl salt chamber. 6. Press ready when the reading has sta...

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    1 3 2 figure 17 location of the hmi41 calibration connector 1 hmi41 indicator 2 25917zz connection cable 3 ext connector there are three adjustment modes available: offset (dry point), gain (wet point), and 2-point adjustment. All of these can be performed using the hmi41 either as a reference meter...

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    6.4.1 connections and selecting the calibrator function 1. To select the calibrator function from the hmi41, press the on/off button until you can see some text on the display. Then release the on/off button and within 1 ... 2 seconds, press both enter and mode buttons until the following display ap...

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    6. Press on/off to finish. These setting are stored in the hmi41 memory; when the hmi41 is switched on again, it automatically starts up as a calibrator for digital transmitters with these serial line settings. After making these settings, continue with the adjustment and follow the directions of th...

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    5. Press enter to confirm the selection. A display similar to the following appears: if you are using a transmitter with the optional display, the message hmi41 adjustment mode is shown on the upper row of the display. 6. Complete the adjustment using one of the following options: • adjustment using...

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    2. Allow the readings to stabilize (can take 30 minutes or more). If you prefer, you can change the display to show the difference in the readings. Press hold and a display similar to the following appears: the numbers on the first line indicate how much the transmitter reading differs from that of ...

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    6.4.2.2 adjustment using hmi41 as terminal complete the steps (connect the cable and select adjustment mode) listed in adjusting offset and gain with hmi41 (page 63) before continuing with this adjustment method. When you carry out an adjustment using hmi41 as a terminal, the hmi41 humidity probe is...

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    3. You can now set the blinking reading to the correct value (for example, the equilibrium rh of a salt solution) with the and buttons. Press enter to complete the adjustment. If the adjustment has been successful, the following display appears: 4. The data is now stored in the transmitter memory. I...

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    Error message probable cause remedy this message can appear during adjustment when the hmi41 is trying to contact the transmitter. Wait. The connection cable is not properly connected or the serial line settings of the hmi41 and the transmitter do not correspond. Check the connection of the calibrat...

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    7. Troubleshooting 7.1 error codes the transmitter's software provides a variety of self diagnostics information, for example, flash and program memory checksum, probe communication status, probe checksum, operation voltage check, and oscillator fault check. At startup, the transmitter's software ch...

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    7.2 solving typical problems you can check error messages with the errs serial line command. For a list of the possible error messages, see error codes (page 69) . In case of constant error, contact vaisala technical support. Table 41 problems and solutions problem or message likely causes and solut...

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    Problem or message likely causes and solutions any of the following errors is active: • program checksum error • factory flash defaults checksum error • factory flash not initialized • oscillator fault bit active faulty transmitter, contact a vaisala service center. Any of the following errors is ac...

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    8. Technical data 8.1 specifications table 42 measurement performance property description/value relative humidity measurement range 0 … 100 %rh accuracy (including non-linearity, hysteresis, and repeatability) at 0 … +40 °c (+32 … +104 °f): 0 … 90 %rh 90 … 100 %rh ±1.5 %rh ±2.5 %rh accuracy (includ...

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    Table 43 operating environment property description/value operating temperature of transmitter body, no display -40 … +60 °c (-40 … 140 °f) operating temperature of transmitter body with display -20 … +60 °c (-4 … 140 °f) operating temperature, hmp110 probe -40 … +80 °c (-40 … 176 °f) storage temper...

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    Property description/value inputs and outputs screw terminals 0.5 … 1.5 mm 2 probe interface 4-pin m8 female panel connector 8.2 spare parts and accessories table 46 spare parts and accessories description order code hmp110 probe for hmt120 hmp110 – separate order form hmp110r replacement probe for ...

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    8.3 transmitter dimensions figure 18 fixed probe model dimensions in mm(in) chapter 8 – technical data 75.

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    Figure 19 remote probe model dimensions in mm(in) hmt120 user guide m211244en-c 76.

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    Appendix a. Calculation formulas a.1 calculation formulas overview the transmitter receives the relative humidity and temperature values from the hmp110 probe. Based on these temperature and relative humidity values, the transmitter calculates dewpoint, frostpoint, absolute humidity, mixing ratio, e...

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    T a m tn 50 ... 100 °c 5.9987 7.3313 229.10 100 ... 150 °c 5.8493 7.2756 225.00 150 ... °c 6.2301 7.3033 230.00 a.3 dew/frostpoint temperature calculation dew/frostpoint temperature (t df ) is calculated with the following formula: ≥ 0 = log − 1 ° pw is the water vapor pressu...

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    A.5 saturation vapor pressure calculation saturation vapor pressure (p ws ) is the equilibrium water vapor pressure in a closed chamber containing liquid water. It is a function only of temperature, and it indicates the maximum amount of water that can exist in the vapor state. Water vapor saturatio...

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    A.7 absolute humidity calculation absolute humidity ( a ) is defined as the mass of water vapour in a certain volume. If ideal gas behaviour is assumed, the absolute humidity can be calculated using the following formula: = ⋅ + 273.15 / 3 where c 216.679 gk/j a.8 enthalpy calculation entha...

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    Temp relative humidity (%rh) 10 20 30 40 50 60 70 80 90 100 160 °c 5.80 3.18 2.30 1.85 1.57 1.38 1.24 1.14 1.06 0.99 a.9.2 accuracy of mixing ratio g/kg (ambient pressure 1013 mbar) table 50 accuracy of mixing ratio g/kg (ambient pressure 1013 mbar) temp relative humidity (%rh) 10 20 30 40 50 60 70 ...

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    Temp relative humidity (%rh) 10 20 30 40 50 60 70 80 90 100 100 °c 3.06 2.04 1.58 1.31 1.14 1.01 0.92 0.85 0.80 0.75 120 °c 3.85 2.40 1.81 1.48 1.28 1.13 1.03 0.95 0.88 0.83 140 °c 4.57 2.73 2.03 1.65 1.41 1.25 1.13 1.04 0.97 0.91 160 °c 5.25 3.06 2.25 1.82 1.55 1.37 1.24 1.13 1.05 0.99 a.9.4 accura...

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    Index a absolute humidity calculation........... 80 accessories...................................................9 accuracies of calculated variables...80 accuracy of absolute humidity g/m3 82 accuracy of dewpoint temperature °c 80 accuracy of mixing ratio g/kg (ambient pressure 1013 mbar)............

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    Mi70 adjustment: field checking and adjustment using a calibrated reference probe.................................... 57 mi70 adjustment: licl- nacl adjustment..............................................59 mi70 adjustment: temperature field check and adjustment using a calibrated reference probe.....

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    Warranty for standard warranty terms and conditions, see www.Vaisala.Com/warranty . Please observe that any such warranty may not be valid in case of damage due to normal wear and tear, exceptional operating conditions, negligent handling or installation, or unauthorized modifications. Please see th...

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    Hmt120 user guide m211244en-c 86.

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    Www.Vaisala.Com.