Vaisala HUMICAP HM70 User Manual
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Vaisala HUMICAP HM70 User Manual

Hand-held humidity and temperature meter
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USER'S GUIDE
Vaisala HUMICAP® Hand-Held
Humidity and Temperature Meter
HM70
M210297EN-E

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Summary of Contents for Vaisala HUMICAP HM70

  • Page 1 USER'S GUIDE Vaisala HUMICAP® Hand-Held Humidity and Temperature Meter HM70 M210297EN-E...
  • Page 2 The contents are subject to change without prior notice. Please observe that this manual does not create any legally binding obligations for Vaisala towards the customer or end user. All legally binding commitments and agreements are included exclusively in the applicable supply contract or Conditions of...

  • Page 3: Table Of Contents

    Graphical Display ..............19 Menus ..................19 CHAPTER 6 SETTINGS ....................21 Pressure Setting..............21 Display Settings ..............22 Quantities and Units............22 Rounding ................22 Hold/Save Display............... 23 Graphic History ..............23 User Interface ................. 24 VAISALA ________________________________________________________________________ 1...
  • Page 4 User's Guide ______________________________________________________________________ Selecting Language.............24 Automatic Power OFF ............25 Changing Shortcut Keys............25 Button Click and Backlight on Button Press......26 Setting Date and Time............26 Device Information ..............27 Reverting to Factory Settings ..........27 CHAPTER 7 RECORDING DATA ..................29 Recording ................29 Stopping Recording ...............30 Viewing Recorded Data............30 Checking Memory Status............31 Deleting All Recorded Files ...........31...
  • Page 5 Changing the Filter..............67 Changing the Battery Pack............ 67 Error Messages ..............68 Technical Support ..............69 Return Instructions ..............69 Vaisala Service Centers............70 CHAPTER 14 TECHNICAL SPECIFICATIONS..............71 Probes HMP75, HMP76 and HMP77........71 Measured Variables ............71 Relative Humidity ............
  • Page 6 Accuracy of Wet Bulb Temperature °C ......74 Accuracy of Absolute Humidity g/m³ ......74 General ..................74 MI70 Indicator................75 Indicator General ..............75 Battery Pack ..............76 General about Vaisala Hand-Held Humidity and Temperature Meter HM70 ..........76 Electromagnetic Compatibility........76 Accessories................77 Dimensions in mm (inches)...........78 4 ___________________________________________________________________ M210297EN-E...

  • Page 7: Chapter 1 General Information

    Throughout the manual, important safety considerations are highlighted as follows: WARNING Warning alerts you to a potential hazard. If you do not read and follow instructions very carefully at this point, there is a risk of injury or even death. VAISALA ________________________________________________________________________ 5...

  • Page 8: Recycling

    User's Guide ______________________________________________________________________ CAUTION Caution warns you of a potential hazard. If you do not read and follow instructions carefully at this point, the product could be damaged or important data could be lost. NOTE Note highlights important information on using the product. Recycling Recycle all applicable material.

  • Page 9: Warranty

    The allegedly defective Product or part shall, liability shall under no circumstances exceed the should Vaisala so require, be sent to the works of invoice price of any Product for which a warranty Vaisala or to such other place as Vaisala may...
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  • Page 11: Chapter 2 Product Description

    Windows software, which allows an easy way to handle measurement data using a serial line or a USB instrument cable. Vaisala HM70 is delivered with a factory calibration certificate. Display Parameters RH relative humidity (% RH) T temperature ( C/ F)
  • Page 12 User's Guide ______________________________________________________________________ shows dewpoint over water throughout the entire measurement range. Recharger connector Connector ports for probes and cables Power ON/OFF Port I Port II Figure 1 MI70 indicator 10 __________________________________________________________________ M210297EN-E...
  • Page 13 180 C. shaft. Preheat and Preheat and chemical purge Preheat and chemical purge chemical purge options options available (HMP75B). options available (HMP77B). available (HMP76B). Figure 2 HMP75, HMP76, and HMP77 probes VAISALA _______________________________________________________________________ 11...
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  • Page 15: Preparations Before Use

    The duration of recharging depends on the charge level of the battery pack. 4 hours is a typical recharging time. The recommended first charging time is 6 hours. When the battery symbol stops rolling, the battery is fully recharged. Disconnect the recharger. VAISALA _______________________________________________________________________ 13...

  • Page 16: Turning On The Device

    User's Guide ______________________________________________________________________ Turning ON the Device Connect the probe to the either of the base connectors of the indicator. Press the button to turn on the device. Select the language by using the buttons. Confirm by SELECT pressing . You can select the language later as well, see page 24.

  • Page 17: Taking Measurements

    The basic display opens. Let the reading stabilize. CAUTION If you need to disconnect the probe from the indicator, first press POWER ON/OFF button to turn the indicator OFF. This ensures that all settings and data are saved properly. VAISALA _______________________________________________________________________ 15...

  • Page 18: Beware Of Temperature Differences

    User's Guide ______________________________________________________________________ Beware of Temperature Differences In humidity measurement and especially in calibration it is essential that temperature of the probe and measuring environment is the same. Even a small difference in temperature between the environment and the probe causes an error. As the curve below shows, if the temperature is +20 °C and the relative humidity 100 %RH, a difference of ±1 °C between the environment and the probe causes an error of ±6 %RH.

  • Page 19: Buttons, Displays And Menus

    SHORTCUT Press the buttons to activate the function shown above the button. ARROW MENUS MENUS Press any of the buttons to open the . In the you can navigate ARROW with buttons. VAISALA _______________________________________________________________________ 17...

  • Page 20: Basic Display

    User's Guide ______________________________________________________________________ Basic Display Figure 5 MI70 basic display Selected quantities. Up to three of the quantities can be selected at a time. RH relative humidity (% RH) T temperature (ºC/ ºF) : dewpoint/frostpoint temperature (ºC/ ºF) : dewpoint temperature (ºC/ ºF) a : absolute humidity (g/m / gr/ft...

  • Page 21: Graphical Display

    Move in the menus by using buttons. Select the item with buttom. Press to return to the earlier level. EXIT returns back to normal operation. Main menu Display menu Functions menu Recording/Viewing menu Environment menu Settings menu VAISALA _______________________________________________________________________ 19...
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  • Page 23: Chapter 6 Settings

    Default unit is hPa. Press to set the ambient pressure value. Set the pressure value by using buttons Press change the sign of the pressure value. Press to save the value. EXIT Press to return to the basic display. VAISALA _______________________________________________________________________ 21...

  • Page 24: Display Settings

    User's Guide ______________________________________________________________________ Display Settings Quantities and Units All the quantities and units are shown in page 9. MENU; OPEN. 1. Open the press Display 2. Select , press Quantities and units 3. Select , press 4. To select a quantity, move on the quantity you want by using the SELECT arrow buttons, press 5.

  • Page 25: Hold/Save Display

    1. Open the press Display 2. Select , press Graphic history, SHOW 3. Select press to have a graphical history display. 4. To get the statistical info on the graph area (minimum, maximum INFO. and mean values), press VAISALA _______________________________________________________________________ 23...

  • Page 26: User Interface

    User's Guide ______________________________________________________________________ NEXT. To get the curve of the other selected quantities, press NEXT To get the curves of the all quantities, press until text ALL is shown instead of NEXT. Then press To zoom in the curve, press the arrow button . To zoom out, press the button .

  • Page 27: Automatic Power Off

    Functions) Chemical Purge SELECT , press . Answer to confirm your selection, otherwise answer and continue from item 4. EXIT Press to return to the basic display. Hold/Save -shortcut key replaced by Chemical purge -shortcut key VAISALA _______________________________________________________________________ 25...

  • Page 28: Button Click And Backlight On Button Press

    User's Guide ______________________________________________________________________ Button Click and Backlight on Button Press MENU: OPEN. Open the press Settings Select , press User interface, Select press To turn OFF or ON sound effect while pressing the buttons, Key Click ON/OFF select and press To turn OFF and ON backlight while pressing the buttons, select Backlight on key ON/OFF...

  • Page 29: Device Information

    Press to confirm the reverting. The power turns off automatically. When switching on again, the factory settings are reverted. After reverting to the factory settings, you must set the language, date and time again. See Chapter 3. VAISALA _______________________________________________________________________ 27...
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  • Page 31: Chapter 7 Recording Data

    3 days 15 min 28 days 14 days 9 days 30 min 56 days 28 days 18 days 113 days 56 days 37 days 339 days 169 days 112 days 12 h 1359 days 678 days 451 days VAISALA _______________________________________________________________________ 29...

  • Page 32: Stopping Recording

    User's Guide ______________________________________________________________________ SELECT. Press Duration SET. To set the recording duration, select , press Select the recording duration (1 min, 5 min, 15 min, 30 min, 1 h, 3 h, 12 h, 24 h, 7 d, 30 d, memory full) with arrow buttons and SELECT.

  • Page 33: Checking Memory Status

    The data memory can be cleared as follows: MENU: OPEN. Open the press Recording/Viewing Select , press Clear data memory, CLEAR Select press Press to confirm deletion of all recorded data files. EXIT. To return to the basic display, press VAISALA _______________________________________________________________________ 31...

  • Page 34: Mi70 Link Program For Transferring Recorded Data To Pc

    Data to PC The recorded data can be transferred to a PC by using MI70 Link program. MI70 Link program can be ordered from Vaisala, see the list of accessories on page 77. You can examine the recorded data easily in ®...

  • Page 35: Chapter 8 Other Functions

    If you have only one limit, e.g. if you want to detect if the humidity is rising above 50 % RH, set the upper limit to 50 % VAISALA _______________________________________________________________________ 33...

  • Page 36: Chemical Purge (Optional)

    User's Guide ______________________________________________________________________ RH and the lower limit so low that it never will be reached (for example 0 % RH). Thus, the HM70 will alert when RH rises above 50 % RH. Alarm ON/OFF, Select press to activate the alarm and return back to the basic display.
  • Page 37 When the chemical purge is done the basic display with readings returns. Stabilization of temperature reading can take a few minutes. You can make a shortcut to the chemical purge function by setting one shortcut key to refer Chemical Purge function, see page 25. VAISALA _______________________________________________________________________ 35...

  • Page 38: Sensor Preheat (Optional)

    User's Guide ______________________________________________________________________ Sensor Preheat (Optional) Sensor preheat is an optional feature of the HM70 series humidity probes (B-version probes). In some measurement applications, unwanted dew formation makes humidity measurement difficult or even impossible. High humidity combined with rapidly changing outdoor temperature can condense the water vapour in the air onto the sensor.

  • Page 39: Turning Sensor Preheat On/Off

    Stabilization of the temperature can take a few minutes. You can make a shortcut to the sensor preheat function by setting one shortcut key to refer sensor preheat function, see page 25. VAISALA _______________________________________________________________________ 37...
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  • Page 41: Calibration And Adjustment Of Transmitters

    HM70. One or two point calibrations can be done to industrial transmitters and modules (HMP230/240 series, HMT320/330 series, HMM210 modules) by using a MI70 indicator and Vaisala's humidity calibrator HMK15. Calibration Cables...

  • Page 42: Calibration And Adjustment Of Hmd/W 60/70, Hmd/W 20/30 And Hmp130 Series Transmitters

    User's Guide ______________________________________________________________________ Connector ports Figure 7 Connectors for connection cables Calibration and Adjustment of HMD/W 60/70, HMD/W 20/30 and HMP130 Series Transmitters For checking and adjusting HM60/70 series and HM20/30/130 series transmitters you need a MI70 and a HMP70 calibrated reference probe and a connection cable.
  • Page 43 Do not breathe towards the transmitter probes when adjusting the reading. When the transmitter reading is equal with the HM70 reference probe's reading, adjustment is done. Switch off HM70 and detach the cable from the transmitter and the HM70 indicator. VAISALA _______________________________________________________________________ 41...

  • Page 44: Calibration And Adjustment Of Hmt100 Series Transmitters

    Transmitters You can check and adjust the HMT100 relative humidity measurement with Vaisala HM70 Hand-Held Humidity and Temperature meter. A HM70-connection cable is needed, Vaisala order code: 211339. There are four types of adjustments available: field checking and adjustment using a calibrated reference probe, one-point adjustment using a calibrator, two-point adjustment using a calibrator and LiCl- NaCl adjustment.

  • Page 45: One-Point Adjustment Using A Calibrator

    Enter the correct reference value with the arrow buttons. Press Confirm the adjustment by pressing BACK EXIT The adjustment is done. Press to return to the basic display. Turn off the MI70 and detach the connection cable. VAISALA _______________________________________________________________________ 43...

  • Page 46: Two-Point Adjustment Using A Calibrator

    User's Guide ______________________________________________________________________ Two-Point Adjustment Using a Calibrator Note that the difference between the two reference humidities must be at least 50 %. MI70 indicator is used now only as a terminal for visualizing and setting the transmitter's RH reading. Follow steps 1 to 7 on page 42 and continue as follows: Remove the filter from the transmitter's probe and insert the probe into the lower humidity reference condition.

  • Page 47: Licl-Nacl Adjustment

    MI70 indicator in communication. Follow the first 12 steps and continue according to the chosen calibration method. In case you have a transmitter provided with heated probe, carry out these preparations before calibration. VAISALA _______________________________________________________________________ 45...
  • Page 48 User's Guide ______________________________________________________________________ HMP240 transmitter with a probe heating: The heating function is turned off automatically when the connection has been established in step 10. HMM210 module with chemical purge function (re-gain) or with probe heating option: Before calibration activate the re- gain function by resetting the device.

  • Page 49: Field Checking And Adjustment Of Humidity By Using A Calibrated Reference Probe

    1-Point Humidity Adjustment by Using a Calibrator You can use Vaisala humidity calibrator HMK15 to achieve the reference humidities. MI70 indicator is working as a communicator in the calibration procedure. Follow the steps from 1 to 12 and continue as follows:...

  • Page 50: 2-Point Adjustment By Using A Calibrator

    2-Point Adjustment by Using a Calibrator You can use Vaisala humidity calibrator HMK15 in calibration and adjustment. Note that the difference between the two reference humidities shall be at least 50 %. MI70 indicator is working as a communicator in the calibration procedure.

  • Page 51: Calibration And Adjustment Of Hmt320 Series Transmitters

    CAL.DIS Take off the jumper from the motherboard of the HMT300 transmitter. Now MI70 is moved into Adjustment mode. Press to start adjustment. SELECT. Select press Check the environment settings, if needed. Otherwise press VAISALA _______________________________________________________________________ 49...

  • Page 52: Field Checking And Adjustment By Using A Calibrated Reference Probe

    User's Guide ______________________________________________________________________ Field Checking and Adjustment by Using a Calibrated Reference Probe Follow the steps from 1 to 8 and continue as follows: 9. Check that the probes are located in equal conditions and wait until the readings are stabilized (can take 30 minutes or more). If you are near the probes, do not breathe in their direction.

  • Page 53: 2-Point Adjustment By Using A Calibrator

    Give the higher reference humidity value by using the arrow buttons. Press Confirm the adjustment, press (by pressing return to adjustment mode display and no changes are made). If VAISALA _______________________________________________________________________ 51...

  • Page 54: Calibration And Adjustment Of Hmt330 Series Transmitters

    User's Guide ______________________________________________________________________ the difference between two references is less than 50 %, adjustment can not be done. BACK Adjustment is done. Press to exit the adjustment mode EXIT press to return to the basic display. CAL.RH Replace the jumper to pins.

  • Page 55: Field Checking And Adjustment By Using A Calibrated Reference Probe

    If you use humidity calibrator HMK15, please use the adapter fitting (13.5 mm) on the measurement hole if you calibrate probes of HMT334, HMT335, HMT337 and HMT338. Follow the steps from 1 to 8 on page 52 and continue as follows: VAISALA _______________________________________________________________________ 53...

  • Page 56: 2-Point Adjustment By Using A Calibrator

    User's Guide ______________________________________________________________________ Remove the filter from the transmitter's probe and insert the probe into the reference condition. ADJUST Press to continue adjusting 1-point adjustment SELECT. Select , press READY Press when the reading is stabilized in the reference condition (takes about 30 minutes or more) You can follow the GRAPH stabilization from the...

  • Page 57: Licl-Nacl Adjustment

    Confirm the adjustment, press (by pressing return to adjustment mode display and no changes are made). BACK Adjustment is done. Press to exit the adjustment mode EXIT press to return to the basic display. VAISALA _______________________________________________________________________ 55...

  • Page 58: Field Checking Of Dmw19 Transmitter

    2. Remove the lid of the DMW19 transmitter. 3. Connect the 211917ZZ- cable to the 6-pins test connector (cable connector position: Vaisala-logo on top) of the DMW19. 4. Connect the other end of the calibration cable to either of the HM70's connector port located on the bottom of the indicator, see Figure 7 on page 40.

  • Page 59: Measuring Other Parameters Simultaneously

    MEASURING OTHER PARAMETERS SIMULTANEOUSLY The MI70 indicator is a generic indicator that can be used with Vaisala interchangeable dewpoint (DMP) and carbon dioxide (GMP) probes. Two different probes can be used simultaneously. 1. Turn off the device. 2. Connect the DMP70/GMP70 probe to the other connector port in the bottom of the indicator.
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  • Page 61: Analog Output Connection

    Connect the analog output signal cable connector to the indicator base connector. Connect the screw terminal block as follows: Brown wire: common wire (-) Yellow-green wire: signal (+) MENU: OPEN. Open the press Functions 3. Select , press Analog output, 4. Select press VAISALA _______________________________________________________________________ 59...
  • Page 62 User's Guide ______________________________________________________________________ Quantity 5. Select and press to choose a quantity. Quantity, SELECT. 6. Select press (One quantity can be chosen at a time. Only active quantities can be selected. To change the MENU Display Quantities and units quantities, go to 0.0 V 7.

  • Page 63: Calibration And Adjustment Of Hm70 Series Probes

    It is recommended to send the device to Vaisala Service Centers for calibration, see contact information on page 68. Alternatively user can calibrate and adjust HM70 by following the instructions given in this chapter.

  • Page 64: 2-Point Adjustment

    User's Guide ______________________________________________________________________ stored into the memory of the HM70. Make the adjustment as LiCl--NaCl instructed in the following section 2-Point Adjustment (select autom. on item 9 and follow the display instructions). 2-Point Adjustment Low humidity references 0 % (Nitrogen)/ 11.3 % (LiCl) and higher humidity references 75 % (NaCl)/ 97 % (K ) are recommended for two-point adjustment.

  • Page 65: 1-Point Adjustment

    Temperature Adjustment Temperature adjustment in one or two points can be done if there is reason to believe that the adjustment is changed. If adjustment is done only in one point, reference condition shall represent the measuring environment. VAISALA _______________________________________________________________________ 63...

  • Page 66: 1-Point Adjustment

    User's Guide ______________________________________________________________________ Take out the screw covering the calibration button (in the probe handle). Press the calibration button. For pressing, use tool with thin and sharp point, such as small screwdriver. When pressing the button, indicator turns to adjusting mode. SELECT Select , press...

  • Page 67: 2-Point Adjustment

    EXIT mode and to return to the basic display. Last Adjustment Date Last adjustment date. To see the last adjustment date, select You can Device information check this date also from the , see page 27. VAISALA _______________________________________________________________________ 65...
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  • Page 69: Chapter 13 Maintenance

    Install the new filter. Changing the Battery Pack A new rechargeable battery pack can be ordered from Vaisala. Change the battery pack as follows, and refer to Figure 9 on page 68: 1. Open the back plate of the indicator by opening the screw of the back plate.

  • Page 70: Error Messages

    If the HM70 displays an error message, check first that the sensor is connected properly. If there is condensed water in the probe, let the probe dry before resuming measurement. In case of constant error, please contact Vaisala Service Centers (see page 68). Error Messages...

  • Page 71: Technical Support

    Include the information specified in step 2 in the box with the faulty product. Also include a detailed return address. Ship the box to the address specified by your Vaisala contact. VAISALA _______________________________________________________________________ 69...

  • Page 72: Vaisala Service Centers

    User's Guide ______________________________________________________________________ Vaisala Service Centers Vaisala Service Centers perform calibrations and adjustments as well as repair and spare part services. See contact information below. Vaisala Service Centers also offer accredited calibrations, maintenance contracts, and a calibration reminder program. Do not hesitate to contact them to get further information.

  • Page 73: Technical Specifications

    ± 0.6 % RH (0...40 % RH) ± 1.0 % RH (40...97 % RH) (**) Defined as ±2 standard deviation limits. Small variations possible, see also calibration certificate. Humidity sensors for HM70: ® HUMICAP 180R ® HUMICAP 180RC (chemical purge, sensor preheat) VAISALA _______________________________________________________________________ 71...

  • Page 74: Temperature

    User's Guide ______________________________________________________________________ Response time (90 %) at 20 ºC in 0.1 m/s air flow 17 s with grid filter 50 s with grid + steel netting filter 60 s with sintered filter Temperature Measurement ranges HMP75 -20 ... +60 ºC HMP76 -50 ...

  • Page 75: Accuracies Of Calculated Variables

    3.43 3.72 4.04 4.38 4.75 5.15 5.58 6.73 7.73 8.92 10.34 12.05 14.14 16.71 19.92 24.01 29.29 16.26 21.34 28.89 40.75 60.86 98.85 183.66 438.56 — — 40.83 74.66 172.36 — — — — — — — VAISALA _______________________________________________________________________ 73...

  • Page 76: Accuracy Of Wet Bulb Temperature °C

    User's Guide ______________________________________________________________________ Accuracy of Wet Bulb Temperature °C Relative humidity Temp. 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.20 — — 0.21 0.21 0.22 0.22 0.22 0.22 0.23 0.23 — — 0.27 0.28 0.28 0.29 0.29 0.29 0.30 0.30 0.31 0.31 0.45 0.45...

  • Page 77: Mi70 Indicator

    0.002 %/°C full scale Minimum load resistor 10 kΩ to ground Data interface RS232C (EIA-232) Data logging capacity 900 ... 2700 real time data points, Logging interval 1 s to 12 h Logging duration 1 min ... memory full VAISALA _______________________________________________________________________ 75...

  • Page 78: Battery Pack

    30 days Power consumption during charge 10W max Charging time 4 hours General about Vaisala Hand-Held Humidity and Temperature Meter HM70 Storage temperature -40 ... +70 °C Storage humidity range 0 ... 100 % (non-...

  • Page 79: Accessories

    Probe holder (only for HMP76) HM36915 Others Measurement indicator MI70 PC Connection tools MI70 Link software interface kit including a USB 219687 instrument cable for MI70 MI70 Link software interface kit including a MI70LINK serial connection cable for MI70 VAISALA _______________________________________________________________________ 77...

  • Page 80: Dimensions In Mm (Inches)

    User's Guide ______________________________________________________________________ Dimensions in mm (inches) Ø 12 (0.47) MI70 Indicator HMP75 Probe 78 __________________________________________________________________ M210297EN-E...
  • Page 81 Chapter 14 ____________________________________________________ Technical Specifications Ø 12 (0.47) HMP76 Probe HMP77 Probe 37.5 (1.48) 79.5 (3.13) 99.5 (3.92) HMP77 Probe ntionally left blank. VAISALA _______________________________________________________________________ 79...
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  • Page 83 *M210297EN*...

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