Vaisala HMDW110 User Manual

M211726EN-AUSER'S GUIDEVaisala HMDW110 Series Humidity andTemperature Transmitters

HMD110/112 PartsFigure 1 HMD110/112 Parts1 = PTFE membrane filter.2 = Sensors for humidity and temperature.3 = Fastening flange.4 = Tightening screw f

HMW110/112 PartsFigure 2 HMW110/112 Parts1 = Screw holes for mounting (2 pcs).2 = Cable gland.3 = Sensors for humidity and temperature.4 = PTFE filter

HMS110/112 PartsFigure 3 HMS110/112 Parts1 = Radiation shield. Do not remove for installation, only when replacing thesensor or filter.2 = Long screws

Component BoardAll HMDW110 transmitter models use the same component board and have two4...20 mA outputs (loop powered). There is also a service por

Analog Output Overrange BehaviorAnalog outputs of the HMDW100 series transmitters have a defined behaviorwhen the values measured by the transmitter a

3 INSTALLATIONSelecting LocationWhen mounting duct model transmitters:n Avoid installing in a location where condensation may fall on the sensorinside

HMD110/112 Installationn Medium size crosshead screwdriver (Pozidriv) for screws oncover and flange.n Small slotted screwdriver for screw terminals.n

4. Push the probe of the transmitter through the flange and into the duct.Theprobe should reach far enough so that the sensor is located in the middle

HMW110/112 Installationn Medium size crosshead screwdriver (Pozidriv) for coverscrews.n Small slotted screwdriver for screw terminals.n Two installati

2. Open the transmitter cover, and route the cable through the cable gland.Connect the wires to the screw terminals according to the wiringinstruction

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3. Adjust the length of cablebetween the cable gland and theterminal blocks. Make the cableshort enough to close the coverwithout leaving a cable loop

6. Plug in the screw terminal blocks,close the cover, and tighten thescrews.7. Secure the cable to the poleusing a zip tie, or on the wallusing cable

Wiring Both Current Loops With a Single Power SupplyFigure 9 HMDW110 Wiring with Single Power SupplyHMDW110 Power Supply RequirementsHMDW110 series tr

Wiring HMDW110 with RDP100You must always connect the humidity measurement current loop (HUM,terminals 5and 6) to power the transmitter. Connecting t

4 SERVICE PORTConnecting to the Service Portn Computer withoWindows operating systemoTerminal applicationoFree USBportoDriver for Vaisala USB cable i

Terminal Application SettingsYou need a terminal application to be able to use the service port commands ofthe HMDW110 series transmitter. You can dow

Serial CommandsThe notation <cr> refers to the carriage return control character, which you cansend in a terminal application by pressing enter

Command Description PagecrhclrClear user calibration for humidity measurement.Factorycalibration remains.37ctUser calibration for T measurement. 37ct

Syntax Descriptionerrs<cr>Show active error(s). Possible errormessages are listed below. For moreinformation, see Error Messages onpage54.n No

Syntax Descriptionhelp<cr>Show list of currently available serialcommands.Example:help???ADDRAERRAMODEAOVERASELATESTCLOSECRHCRHCLRCTCTCLRERRSFCR

Table of Contents1 General Information 3About This Document 3Documentation Conventions 3Safety 4ESD Protection 4Recycling 4Trademarks 4Software Licens

Syntax Descriptiontime<cr>Show transmitter uptime (time since lastreset) in hh:mm:ss.Example:timeTime : 00:54:51Table 9 Time CommandSerial Line

Syntax Descriptions<cr>Stop the continuous outputting ofmeasurement values.Example:...T= 22.8 'C RH= 39.5 %RH Td= 8.3 'C Tw= 14.5 &apo

Syntax Descriptionform<cr>Show the currently used measurementformat.form /<cr>Reset measurement format to default.form [sss]<cr>Set

Modifier DescriptionuxName of the measurement unit usingxnumber of characters. Forexample, u3 shows the name of the measurement unit with threecharact

Syntax Descriptionseri<cr>Show current serial line settings.seri [baud p d s]<cr>Set new serial line settings for RS-485 line(also affects

Syntax Descriptionsmode<cr>Show current start-up operating mode of theserial line, and prompt to enter new mode.New mode is taken into use when

Syntax Descriptionamode<cr>Show currently set analog output mode.Example:amodeCh1 output : 4 ... 20 mACh2 output : 4 ... 20 mATable 25 Amode Com

Syntax Descriptionasel ?<cr>Show currently set analog outputparameters and scaling.asel<cr>Show currently set analog outputparameters and

Syntax Descriptionatest [ch1 ch2]<cr>Set analog channels to defined output value(in mA).ch1 = Output value for channel 1.ch2 = Output value for

Syntax Descriptioncrhclr<cr>Clear the current user adjustment forhumidity. Factory calibration remains.Example:crhclrOKTable 30 Crhclr CommandSy

5 Maintenance 41Cleaning 41Calibration and Adjustment 41Adjustment Types 42Adjustment Points 42Calibration and Adjustment Using a Hand-Held Meter and

Syntax Descriptionfcrh<cr>Start the two-point humidity calibration andadjustment sequence. If you have changedthe humidity sensor of the device

Syntax Descriptionli<cr>Enter values for offset and gain parametersfor user adjustment. Useful for restoringsome earlier state of user adjustmen

Syntax Descriptionfrestore<cr>Restores the factory default settings. Alluser-made settings are lost, including usercalibration. Reset the transm

5 MAINTENANCECleaningThe body of the transmitter can be cleaned by wiping with a moistened lint-freecloth. Do not use cleaning agents or solvents, or

n Always wait for measurement instruments to stabilize in the ambienttemperature. Temperature differences are a major source of measurementerror.n Che

n The second point (high point) affects measurement gain. For humidityadjustment, the high point must be > 50 %RH.Additionally, two-point humidity

9. Select the parameter for adjustment. You can only adjust relative humidity(RH) or temperature (T). The rest of the parameters are calculated based

One-Point Humidity Calibration and AdjustmentUsing a Hand-Held Meter and HMK15 HumidityCalibratorn A fully charged Vaisala MI70 indicator (the measure

12. Select Ready, and use the arrow buttons to enter the correct RHvalue ofthe salt jar. Select OKwhen done.13. The MI70 will ask Do you really want

2. Plug in the connection cable 219690to the service port of the HMDW110series transmitter, and the other end to a free USBport on your computer.3.

1 GENERAL INFORMATIONAbout This DocumentThis document provides information for installing, operating, and maintainingHMDW110 series transmitters.Docum

10. Press enter to refresh the measured value (to see if the measurement isnow stable). When it is, enter the value of the first reference point and p

16. Remove the probe from the salt jar and reconnect the filter. Plug the hole onthe salt jar.17. Disconnect the connection cable from the service por

7. Give the l command to view the currently active user adjustmentparameters.Example:default values of the user adjustment parameters (no useradjustm

13. Give the l command to verify that new values for user adjustmentparameters T offset and T gain have been stored.Example:user adjustment parameter

3. Remove the filter to access the sensors.1 = Vaisala HUMICAP®sensor. Handle by theplastic frame.2 = Temperature sensor. Do not touch orattempt to re

You will need to remove the radiation shield to access thesensor, and this is difficult to do while the transmitter remainsmounted on a pole or wall.

5 TROUBLESHOOTINGError MessagesTo show the currently active error messages of the transmitter, use the errsserial command. See page 26.Error Message P

Technical SupportFor technical questions, contact the Vaisala technical support by e-mail [email protected]. Provide at least the following suppo

6 TECHNICAL DATASpecificationsProperty SpecificationRelative humidityMeasurement range 0 ... 100 %RHAccuracyTemperature range +10 ... +30 °C (+50 ...

Property SpecificationOperating temperature range -40 ... +60 °C (-40...+140 °F)Operating humidity range 0 ... 100 %RHMaximum wind/flow speed 30 m/s

SafetyThe HMDW110 series transmitter delivered to you has been tested for safetyand approved as shipped from the factory. Note the following precautio

DimensionsAll dimensions are in millimeters (mm).Figure 13 HMS110/112 DimensionsFigure 14 HMD110/112 Dimensions586 Technical Data

Figure 15 HMW110/112 DimensionsSpare Parts and AccessoriesInformation on spare parts, accessories, and calibration productsisavailable online at www.

*M211726EN*www.vaisala.com

Software LicenseThis product contains software developed by Vaisala. Use of the software isgoverned by license terms and conditions included in the ap

2 PRODUCT OVERVIEWHMDW110 Series OverviewHMDW110 series transmitters are accurate humidity and temperaturetransmitters for measurements in HVAC and cl

Output Parameters ExplainedHMDW110 series transmitters offer several output parameters. Relative humidity(RH) and temperature (T) are the measured par