Humidity & Temperature Measurement - Vaisala

Vaisala HMP80 + Indigo80 Hand-Held is designed for demanding humidity measurement in spot-checking applications. It is also ideal for field checking and calibration of Vaisala’s fixed humidity instruments.

The set consists of an Indigo80 handheld indicator and an HMP80 hand held humidity probe. 2 probe lengths are available depending on the application.

Key Features

• RH measurement range 0…100 % RH
• RH accuracy up to ±0.8% RH
• Graphical user interface with colour screen
• Shows measurement trends and live data
• Proven Vaisala HUMICAP® Sensor technology
• 2 probes, temperature measurement ranges between -50 and +180 °C
• Multiprobe operation; dewpoint, CO2, H2O2 and moisture in oil probes can also be connected
• Displays various humidity parameters
• Sensor preheat and chemical purge options for demanding conditions including condensation
• Powered by a rechargeable Li-Ion battery with 10 hour typical operation time, or AC adaptor
• Data can be logged, and transferred to a PC via Vaisala Insight software
• Rugged and reliable – even in extreme conditions
• NIST traceable calibration certificate included

Displays Relative Humidity, Temperature, Dewpoint Temperature, Mixing Ratio, Absolute Humidity, Wet Bulb Temperature, Enthalpy, Water Vapour Pressure and more.

Configuration Code required for ordering:  INDIGO80 order form with probes (PDF)

Indigo80 Handheld Indicator –  Indgo80 Datasheet (PDF)
HMP80N Handheld Humidity & Temp Probe, Standard shaft -20 to +60°C  – HMP80 Datasheet (PDF)
HMP80L Handheld Humidity & Temp Probe, Long shaft -50 to +120°C

The Vaisala HUMICAP® Hand-Held Humidity and Temperature Meter HM40 is a compact and portable humidity meter. It is an ideal spot-checking tool that is easy to use and provides reliable measurement.
It can be used for a wide range or various portable measurement applications.

Key Features

• Humidity measurement range 0…100 %RH
• Operating temperature range -10 °C…+60 °C
• Display a wide range of quantities: RH, T, Td, Tw, a, x, h
• Graphical display indicates when measurement has stabilized
• Compact and robust housing
• Hold-button to freeze the screen and save the reading
• Multilingual user interface with 10 languages
• The interchangeable measurement probe HMP113 can be user calibrated
• Incorporates the proven Vaisala HUMICAP 180R® sensor

Displays Humidity, Temperature plus Dewpoint, Wet bulb, Absolute humidity, Mixing ratio & Enthalpy.

Includes two AA Alkaline batteries & belt clip.

Data on HM40 (pdf, opens in a new tab)

User’s Guide on HM40 (pdf, opens in a new tab)

Configuration code is required: HM40 Order Form (PDF) 

HM41 Hand-Held Humidity and Temperature Meter, Standard probe (directly attached HMP113):
HM45 Hand-Held Humidity and Temperature Meter, Remote probe with handle (HMP113+HM40HANDLE): 
HM42 Hand-Held Humidity and Temperature Meter, 4mm thin probe (HM42PROBE) with membrane filter: 
HM46 Hand-Held Humidity and Temperature Meter, Stainless steel probe (HM46PROBE) with sintered filter:

SHM40 offers an easy and reliable solution for humidity measurements in concrete and other structures using the borehole method. In this method, a humidity probe is left in the borehole until the humidity in the hole has reached an equilibrium state and the stabilized values can be read.

The interchangeable HMP40S probes connect easily to the HM40 indicator with a snap-on connector enabling convenient use of multiple probes with one indicator. The measurement data can be displayed for example in a stabilization graph. The rugged HMP40S probes are IP65 classified and conform to the ASTM-standard F2170.

Key Features

• HM40 indicator with adapter
• HMP40S RH&T probe with a cable
• Calibration certificate (ISO9001 compliant, NIST traceable)
• 12 pcs plastic tubes (19266HM)
• 12 pcs rubber plugs (233976)
• 3 pcs protective covers with lid (19268HM)
• Weather-proof carrying case with a shoulder strap

Data on SHM40 (pdf, opens in a new tab)

SHM40 Vaisala Structural Humidity Measurement Kit

A reliable basic outdoor humidity sensor for a pole or wall installation. Dew point, wet bulb and enthalpy outputs can be selected by dip switch instead of the default RH output.

The Humidity and Temperature Sensor Transmitter Series HMS80 are optimized for outdoor measurements HVAC. They feature an integrated solar radiation shield, which is a must for accurate humidity and temperature measurements in outdoor conditions. Both 2-wire HMS82 and 3-wire HMS83 versions are available.

Key Features

• Reliable outdoor transmitters with integrated radiation shields
• ±3 %RH accuracy
• User-exchangeable INTERCAP® sensor for easy field replacement
• Default output parameters are relative humidity and temperature. Dew point temperature, wet bulb
  temperature, and enthalpy outputs selectable using dip switches
• Options for both current and voltage outputs
• Ingress protection IP65

Operating temperature range: -40 … +60 °C (-40 … +140 °F)
Operating humidity range: 0 … 100 %RH

Data sheet on HMS80, HMD80, HMW80 Series (pdf, opens in a new tab)

HMS82 Outdoor Transmitter, RH+Temp, 2-wire, 4-20mA current output, Radiation shield, calculated parameters* IP65
HMS83 Outdoor Transmitter, RH+Temp, 3-wire, 0-10V voltage output, Radiation shield, calculated parameters* IP65

*Calculated parameters include dew point temperature, wet bulb temperature, and enthalpy.

Vaisala HUMICAP® Humidity and Temperature Transmitter Series HMS110 are designed for demanding outdoor measurements in building automation applications. These ±2% transmitters include an integrated radiation shield to reduce the influence of solar radiation on temperature and humidity measurements and to ensure measurement accuracy in outdoor conditions.

HMS110 transmitters are equipped with the trusted HUMICAP® 180R – a robust, general-purpose humidity sensor that functions well in high humidity. The sensor’s superior stability ensures long-lasting accuracy and minimal maintenance throughout the transmitter’s lifetime.

If necessary, the transmitters can be field-calibrated using either an Indigo80 Hand-Held Humidity and Temperature Meter, or a PC connection.

Key Features

• Integrated solar radiation shield
• Calibration certificate included
• Proven HUMICAP® 180R sensor for long-lasting accuracy
• 3-point traceable calibration (certificate included)
• Current output (4…20 mA)
• On-site calibration with HM70 Hand-Held Meter or PC connection
• Ingress protection IP65

Data on HMS110 (pdf, opens in a new tab) 

HMS110 Outdoor Transmitter, ±2%RH, RH+Temp, configurable, 2-wire 4-20mA current output, IP65
Configuration code required – HMS110 Order Form (PDF)
Delivered with customer specific output settings, including calculated humidity parameters and special scaling of outputs, IP65

HMS112 Outdoor Transmitter, ±2%RH, RH+Temp, 2-wire, 4-20mA current output, IP65

Provides reliable and stable humidity and temperature measurement with the new generation Vaisala HUMICAP® 180R sensor.

Especially designed for use in meteorological applications and for a wide range of instrumentation, for example, recorders, data loggers, and laboratory equipment and monitoring.

Key Features

• Vaisala HUMICAP®180R sensor – superior long-term stability
• Optional warmed humidity probe
• Plug-and-play
• Chemical purge
• USB connection for service use
• Installation kits for DTR13 and DTR502 radiation shields and also for a Stevenson screen
• Weather-proof housing IP66
• New, fast temperature probe
• Different output possibilities: voltage, RS-485, resistive Pt100
• Applications: meteorology, aviation and road weather, instrumentation

Datasheet on HMP155 (pdf, opens in a new tab)

HMP155 User Guide (pdf, opens in a new tab)

HMP155A High Accuracy Outdoor RH+Temp Probe, 2 x voltage outputs (RS485 for service use)
HMP155D High Accuracy Outdoor RH+Temp Probe, Voltage output for RH, 4-wire Pt100 output for Temperature (RS485 for service use)
HMP155E High Accuracy Outdoor RH+Temp Probe, RS485 serial output
Configuration code is required: HMP155 Order form (pdf, opens in a new tab)

Variants that replace old models HMP45A & HMP45D:

HMP155 RH & T probe with 2 x 0…1VDC outputs. Includes 3.5m cable and Humicap 180R sensor
Order code HMP155-A2GB11A0A1A1A0A

HMP155 RH & T probe with 0…1VDC output for RH & 4-wire RTD Pt100 output for temperature. Includes 3.5m cable and Humicap 180R sensor
Order code HMP155-D2AB11A0A1A1A0A

The Vaisala Radiation Shield Series DTR500 are solar radiation and precipitation shields supporting humidity probe installations in outdoor applications.

Key Features

• Protects temperature and humidity probes from scattered, as well as, direct solar radiation and rain
• Maintenance-free
• Naturally ventilated
• Easy to install on a vertical pole, horizontal beam or flat surface
• Suitable for a wide range of applications

Choice of shields and mounting accessories

Used together with the HMT337 Humidity Transmitter, the HMT120/130 Humidity Transmitter, the HMP155 Humidity Probes, the HMP60 Humidity and Temperature Probe, and the HMP110 Humidity and Temperature Probe .

Data on DTR Solar Radiation & Precipitation Shields (pdf, opens in a new tab)

The DTR Shields can be used with the following Vaisala products:

• DTR502(A) with adapter 221072 for Vaisala HUMICAP® Humidity and Temperature Probe HMP155’s additional temp. sensor
• DTR502B for Vaisala HUMICAP® Humidity and Temperature Transmitters HMT333, HMT337, HMT363 and HMT367 and Vaisala Combined Pressure, Humidity and Temperature Transmitters PTU303 and PTU307
• DTR503(A) for Vaisala HUMICAP® Humidity and Temperature Probe HMP155
• DTR503B for Vaisala HUMICAP® Humidity and Temperature Transmitters HMD60/70
• DTR504(A) for Vaisala HUMICAP® Humidity and Temperature Transmitters HMT120/130, Vaisala HUMICAP® Humidity and Temperature Probe HMP110 and Vaisala INTERCAP® Humidity and Temperature Probe HMP60

DTR502B Radiation Shield for HMT333/337
DTR503A Radiation Shield for HMP45/HMP155
DTR503B Radiation Shield for HMD60Y
DTR504 Radiation Shield for HMP60/110. Beam installation
DTR504A Radiation Shield for HMP60/110. Pole mount
DTR13 Radiation Shield, 22cm dia. Beam installation

The HMP60 is a simple, durable and cost-effective humidity probe. It is suitable for volume applications, integration into other manufacturers’ equipment, incubators, glove boxes, greenhouses, fermentation chambers, and data loggers.

Easy installation: The probe cable has a screw-on quick connector for easy installation. Different cable lengths are available. Also other compatible M8 series cables can be used. Accessories are available for different installation needs. Low current consumption. The HMP60 is suitable for battery powered applications because of its very low current consumption.

Several outputs: There are two configurable voltage outputs with relative humidity, temperature or dew point scaling. Four voltage output ranges are available.

Rugged design: The HMP60 is designed for extreme conditions. The aluminium body of the HMP60 is classified as IP65. The probe has a sealed structure and the sensor is protected by a membrane filter and a plastic grid, or optionally by a stainless steel filter.

Recalibration not needed: The Vaisala INTERCAP® Sensor is interchangeable. No recalibration is required; the sensor can simply be replaced, also in the field.

Key Features

• Miniature-size humidity probe
• Low power consumption
• Measurement range: 0 … 100 %RH; -40 … +60°C
• Cable detachable with standard M8 connector
• Rugged metal housing
• Interchangeable Vaisala INTERCAP® Sensor
• Optional RS485 digital output, Optional * dew point output
• Applications: volume applications, integration into other manufacturers’ equipment, glove boxes, greenhouses, fermentation chambers, data loggers

Inputs and outputs

Operating voltage (Use lowest available operating voltage to minimize heating.)
5…28 VDC / 8…28 VDC with 5 V output
8…28VDC with loop power converter
Current consumption 1 mA average, max. peak 5 mA
Start-up time at operating voltage <14 V: 1s;>14 V: 4s

Outputs

2 channels 0…1 VDC / 0…2.5 VDC / 0…5 VDC / 1…5 VDC
1-channel loop-power converter (separate module, compatible with humidity accuracy only) 4…20 mA
digital output (optional): RS485 2-wire half duplex

External loads

0…1 V RL min 10 kOhms
0…2.5 V / 0…5 V RL min 50 kOhms

Data sheet on HMP60 (pdf, opens in a new tab)

HMP60 Integrated RH & T transmitter, incorporates INTERCAP® interchangeable relative humidity sensor.
Order code required: HMP60 Order Form (PDF)

A cost-effective humidity probe HMP63 with plastic enclosure for indoor environment. The probe fits into tight spaces.It is ideal for conditions with fast temperature changes and when standard measurement accuracy is sufficient.

Key Features

• Fast thermal response time
• Low power consumption
• Start-up time < 2 s
• Measurement range: 0 … 100 %RH; -40 … +60°C
• Detachable cable with standard 4-pin M8 connector
• Plastic enclosure with IP54 classification
• Interchangeable Vaisala INTERCAP® sensor
• Optional RS485 digital output
• Optional dew point output

The probe fits into tight spaces. The cable has a threaded M8 connector for easy installation. Different cable lengths are available and other compatible M8-series cables can also be used. Accessories are available for different installation needs.

There are two configurable voltage outputs for relative humidity, temperature, or dew point output. An alternative RS485 output is also available.

No Recalibration Required
The HMP63 includes an interchangeable Vaisala INTERCAP® sensor.
No recalibration is required – the humidity sensor can simply be replaced, even in the field.

Data on HMP63 (pdf, opens in a new tab)

HMP63 Cost Effective RH and Temp probe, Plastic
Configuration code required: HMP63 Order Form (PDF)

The HMP110 is a trouble-free and cost-effective humidity transmitter with high accuracy and good stability.
It is suitable for volume applications or integration into other manufacturers’ equipment. The HMP110 is also suitable for glove boxes, greenhouses, fermentation and stability chambers, data loggers, and incubators.

Easy installation: The probe cable has a screw-on quick connector for easy installation. Different cable lengths and accessories are available.

Low current consumption: HMP110 is suitable for battery powered applications because of its very low current consumption. It also has a fast start-up time.

Several outputs: The temperature measurement is a standard feature, dew point measurement is optional.
Three standard voltage outputs are available.

Robust design: The aluminium body of the HMP110 is classified as IP65. Thus, it survives rough conditions.
The HMP110 has high chemical tolerance because of the HUMICAP® 180R sensor.

Easy maintenance: Maintaining measurement traceability is easy using the HMP110R replacement probe. We send you a replacement probe, you detach the old probe and send it back to us. In this way the measurement is available at all times without interruptions

Key Features

• Miniature-size humidity transmitter
• Low power consumption and fast startup for battery powered applications
• Measurement range: 0 … 100 %RH; -40 … +80°C
• Cable detachable with standard M8 quick connector
• Reliable: Latest generation HUMICAP® 180R sensor for best stability and high chemical tolerance. IP65 metal housing.
• Optional RS485 digital output
• Traceable: Comes with calibration certificate. ±1.7%RH measurement accuracy(0 … 90%RH)
• HMP110R replacement probe service available for easy maintenance
• Optional dew point calculation

Data sheet on HMP110 (pdf, opens in a new tab)

HMP110 High Accuracy RH & Temp Probe
Configuration code required: HMP110 Order Form (PDF)

The HMP113 is a trouble-free and cost-effective humidity transmitter with high accuracy and good stability.
It is suitable for volume applications or integration into other manufacturers’ equipment.

Key Features

• Fast thermal response time
• Low power consumption
• Start-up time < 2 s
• Measurement range: 0 … 100 %RH; -40 … +60°C
• Detachable cable with standard 4-pin M8 connector
• Plastic enclosure with IP54 classification
• Proven Vaisala HUMICAP® 180R sensor for excellent stability
• Optional dew point calculation

The compact probe fits into tight spaces. The cable has a threaded M8 connector for easy installation.
Different cable lengths and a selection of accessories are available.

There are two voltage outputs for relative humidity and temperature or dew point measurement.
An optional RS485 output is also available.

Variety of Calibration Options

A quick field calibration can easily be carried out using a hand-held meter, for example Vaisala Hand-Held Meter HM40. Alternatively, the probe can be calibrated using a PC with USB cable or sent to a Vaisala Service Center.

Datasheet on HMP113 (pdf, opens in a new tab)

HMP113 High Accuracy, Cost Effective RH and Temp probe, plastic body
Configuration code is required: HMP113 Order Form 2026 (PDF)

The Vaisala HUMICAP® HMT120 and HMT130 transmitters are suitable for cleanrooms, museums, laboratories and data centres. Maintaining measurement traceability is easy due to field exchangeable intelligent measurement probes. These can be exchanged with minimal downtime and process disturbance. The humidity parameter options available are: relative humidity, dew point/frost point, wet bulb temperature, enthalpy, absolute humidity, mixing ratio, vapor pressure, and saturation vapor pressure.

The HMT120/130 transmitters use a fully interchangeable relative humidity probe. The probe can be easily removed and replaced with a new one without having to adjust the transmitter, which allows for easy and quick recalibration of the transmitter.

The probe can be adjusted using one of Vaisala’s portable meters as a reference. Also available is a constant output probe with fixed RH and T output for convenient inspection of the monitoring system and signal transfer line.

Features & Benefits

• Vaisala HUMICAP® technology with humidity sensor HUMICAP ® 180R
• Humidity parameter options: relative humidity, dew point/frost point, wet bulb temperature, enthalpy, absolute humidity, mixing ratio, vapor pressure, and saturation vapor pressure
• 2-wire loop-powered or 3-wire voltage output configurations
• Interchangeable probe (easy field calibration)
• Accurate and reliable
• Resistant to dust and most chemicals
• Optional LCD display
• USB cable available for a PC connection for maintenance
• Wall-mounted or with a remote probe
• Constant output probe available
• Can be mounted outdoors using a Vaisala installation kit and the Vaisala Radiation Shield DTR502B
• Enclosure IP65
• Suitable for cleanrooms and demanding HVAC applications
• Measurement range -40 °C … +80 °C

Available Options The HMT120 and HMT130 transmitters are available as wall mounted or with remote probe.

For high temperature applications or where space is limited, the remote probe is ideal.

The transmitters come with an optional, LCD display, which shows the measurement results of selected parameters in selected units. The parameters are displayed simultaneously at two separate rows on the display.

Data sheet on HMT120 & HMT130 (pdf, opens in a new tab)

Note that HMT130 includes a relay output (but not the HMT120). The relay set point can be done via the optional USB cable.

HMT120 Humidity Transmitters with 4-20mA Current Output 
Configuration code required: HMT120 Order Form (PDF) 

HMT120H Humidity only, 4-20mA current output
HMT120K Humidity & Temperature, 4-20mA current output
HMT120V Humidity & Temperature, Catalytic Sensor, 4-20mA current output
HMT120T Temperature output only, 4…20mA current output

HMT130 Humidity Transmitters with Voltage Output
Configuration code required: HMT130 Order Form (PDF)

HMT130H Humidity only, voltage output 0-1V, 0-5V, 0-10V or user defined
HMT130K Humidity & Temperature, voltage output 0-1V, 0-5V, 0-10V or user defined
HMT130V Humidity & Temperature, Catalytic Sensor, voltage output 0-1V, 0-5V, 0-10V or user defined
HMT130T Temperature only, voltage output 0-1V, 0-5V, 0-10V or user defined

The Vaisala HUMICAP® HMT310 series is for demanding industrial applications where compact product design is essential. The measurement stability is excellent. The instrument is easy to integrate, small in size and insensitive to dust and most chemicals. The HMT310 series features several probe options for different application needs:

• HMT311 for wall mounting
• HMT313 for general use
• HMT314 for high pressures up to 100 bar and vacuum conditions
• HMT315 for high temperatures
• HMT317 for high humidity and meteorological applications
• HMT318 for pressurized pipelines up to 40 bar

Key Features

• Six models for demanding industrial applications
• Full 0 … 100 %RH measurement, wide temperature range -40…+180 °C (-40…+356 °F)
• Pressure tolerance up to 100 bar
• Excellent performance in harsh conditions; good chemical tolerance
• Corrosion-resistant IP65/IP66 housing
• 5-point calibration (certificate included)
• Two analog outputs, calibrated (certificate included)
• RS232, ASCII output

Data Sheet on HMT310 (pdf, opens in a new tab)

Configuration code required: HMT310 Order Form (PDF)

HMT310 Industrial series transmitters

HMT311 Transmitter for Wall Mounting, Temperature range -40°C to +60°C
HMT313 Transmitter with Compact Probe, Temperature range -40°C to +80°C
HMT314 Transmitter with Pressure Tight Probe, Temperature range -70°C to +180°C
HMT315 Transmitter with High Temperature Probe, Temperature range -70°C to +180°C
HMT317 Transmitter with Small Vapour-tight Probe, Temperature range -70°C to +180°C, Non Heated
HMT317W Transmitter with Small Vapour-tight Probe, Temperature range -70°C to +180°C, (inc $798 Warmed Probe)
HMT318 Transmitter with Probe for Pipeline Installations, Temperature range -70°C to +180°C

Measure humidity in harsh environments with the best-in-class instrument you can truly depend on. The Vaisala Indigo500 Transmitter paired with the series of HMPX HUMICAP® Humidity and Temperature probes is designed for demanding industrial applications where stable measurements and extensive customisation are essential. This is the top-of-the-line model for demanding industrial applications, incorporating a large graphical display, and a fully configurable transmitter.

There are six probes to choose from:

• HMP1 for wall mounting
• HMP3 for general purpose and duct mounting
• HMP4 for high pressures up to 100 bar and vacuum conditions
• HMP5 for high temperatures
• HMP7 for high humidity and meteorological applications
• HMP8 for pressurized pipelines up to 40 bar
• HMP9 narrow probe for tight spaces and duct mounting

The Indigo500 instrument can be quickly tailored to meet the specific needs of each individual application and is pre-configured for each delivery. There are 2 models of Indigo500 Transmitter:

• Indigo510 Transmitter, 2x Analog Outputs, Ethernet, USB
• Indigo520 Transmitter, 4x Analog Outputs, 1x 4-20mA Input for generic sensor, 2x Relay Outputs, Ethernet, USB

Replaces HMT330 series industrial transmitters.

Key Features

• Full 0…100 %RH measurement, temperature range up to +180 °C, depending on model
• Vaisala HUMICAP® Sensor for excellent accuracy and stability
• Warmed probe for superior performance in condensing environments
• Shows measurement trends and 1-year history graphically
• Multilingual touch screen user interface
• Excellent performance in harsh chemical concentrations
• Corrosion resistant IP65 housing
• NIST traceable (certificate included)

Transmitters:

Indigo510 Configurable industrial series transmitter, 2 Analog Outputs: INDIGO510 Datasheet (PDF) 
Indigo520 Configurable industrial series transmitter, 4 Analog Outputs + 2 Relays: INDIGO520-Datasheet (PDF)
Configuration code is required: INDIGO510 Order Form (PDF) / INDIGO520 Order Form (PDF)

Probes:

HMP1 Humidity/Temp Probe for Wall Mounting, Temperature range -40°C to +60°C HMP1 Datasheet (PDF)
HMP3 Humidity/Temp Probe, General Purpose, Temperature range -40°C to +120°C HMP3 Datasheet (PDF)
HMP4 Humidity/Temp Probe for High Pressures, Temperature range -70°C to +180°C HMP4 Datasheet (PDF)
HMP5 Humidity/Temp Probe for High Temperatures, Temperature range -70°C to +180°C HMP5 Datasheet (PDF)
HMP7 Humidity/Temp Probe for High Humidities, Temperature range -70°C to +180°C HMP7 Datasheet (PDF)
HMP8 Humidity/Temp Probe for Pressure / Vacuum Installations, Temperature range -70°C to +180°C HMP8 Datasheet (PDF)
HMP9 Humidity/Temp Probe, Compact 5mm Dia Head, Temperature range -40°C to +120°C HMP9 Datasheet (PDF)
Configuration code is required: HMPX Order Form (PDF)

The Vaisala Meteorological Installation Kit Indigo500MIK enables the Vaisala Indigo500 series transmitter combined with Humidity and Temperature probe HMP7 and Temperature probe TMP1 to be installed outdoors to obtain reliable measurements for meteorological purposes.

• For outdoor humidity and temperature measurements
• Can be ordered in a variety of configurations
• Use together with Indigo500 series plus HMP7 and optionally TMP1
• Can be used with the Indigo520 Barometric Pressure module to create a three-in-one device, covering Temperature, Humidity and Barometric Pressure. Optional Vaisala SPH10 Static Pressure Head eliminates pressure variations in the barometer caused by wind.

Indigo500MIK Meteorological Installation Kit (For Indigo500 & HMP7 / TMP1) INDIGO500MIK Datasheet (PDF)
Configuration code required: INDIGO500MIK Order Form (PDF)

Vaisala HUMICAP® HMT370 wall mount transmitter is designed specifically for hazardous and explosive environments. The entire transmitter can be placed into zone 0 and 20. There are six different probe options:

• HMP371 for Wall Mounting
• HMP373 for Confined Spaces
• HMP374 for High Pressure
• HMP375 for High Temperature
• HMP377 for High Humidities
• HMP378 for Pressurized Pipelines

Replaces HMT360 Series.

Key Features

• Intrinsically safe (Exi)
• Interchangeable probes
• Detachable probe module
• Graphical LCD display and non-display model
• Vaisala HUMICAP® sensor
• Compatible with Vaisala Insight PC software
• Traceable calibration (certificate included)

Note: This product must be used with a Galvanic Isolator or Zener Barrier.
Please see the manual for further information

Two 4…20 mA analog output signals, power supply 12 .. 28 VDC

HMT370EX Datasheet (PDF)

HMT370EX IECEx Certificate (PDF)

Configuration code required: HMT370EX Order Form (PDF)

The Vaisala HUMICAP® Humidity Module HMM100 is an open frame module for integration into environmental chambers. The modules provide a single analog output channel for relative humidity (RH) or dew point (Td).

Key Features

• Full temperature compensation over the operating temperature range of -70˚C … +180˚C
• High temperature tolerance, also suitable for heat sterilization
• Excellent measurement accuracy with Vaisala HUMICAP® 180R sensor
• Durable Easy field calibration by trimmers
• Maintenance-free
• Easy to install

Applications: test chambers, incubators

Data sheet on HMM100 (pdf, opens in a new tab)

Configuration code is required

HMM100 Humidity module for OEM integration in Environmental Chambers

The Vaisala HUMICAP® Digital Humidity Module HMM105 is an open frame module for integration into environmental chambers. The modules provide an I2C output for relative humidity (RH) or dew point (Td).

The module consists of a detachable probe assembly – a probe head with M10x1 threads and a flex cable and the module circuit board.

The probe assembly is 30 cm in length. The module incorporates the Vaisala HUMICAP® 180R sensor which ensures excellent measurement accuracy.

Key Features

• Digital I2C communication interface available
• Full temperature compensation over the operating temperature range of -40 °C … +180 °C
• High temperature tolerance, suitable for heat sterilization up to +200 °C
• Excellent measurement accuracy with Vaisala HUMICAP® 180R sensor
• Maintenance-free
• Detachable probe assembly for easy installation
• Probe head with M10x1 threads
• 2-point NIST traceable calibration (certificate included)
• Applications: test chambers, incubators

Data sheet on HMM105 (pdf, opens in a new tab)

Configuration code is required

HMM105 Digital Humidity module (I2C output only) for OEM applications

The Vaisala Meteorological Installation Kit HMT330MIK enables the Vaisala HUMICAP® Humidity and Temperature Transmitter HMT337 to be installed outdoors to obtain reliable measurements for meteorological purposes.

• Humidity Calibrator, based on the use of salt solutions.
• Consists of two salt chambers, thermometer and instructions.
• Salts and Ion exchanged water need to be ordered separately.

Refer to order form for all available options.

Two salt chambers with 4 holes: one for the thermometer, and three different sized holes for various Vaisala sensors: 12mm, 13.5mm, 18.5mm, Ion exchange water, 60ml, covers, base plate & mercury thermometer, acc 0.3°C

HMK15 Humidity calibrator including: Two salt chambers, chamber covers, transit covers, base plate, thermometer, measurement cup and mixing spoon

Data sheet on HMK15 (pdf, opens in a new tab)

HMK15 Order Form (pdf, opens in a new tab)

Order salts separately:
# Recommended for normal calibration (0% to 75% RH)
* Rec. salts for high humidity calibration (75% to 100% RH)

#* LiCl for 11.3% RH;
# NaCl for 75.5% RH;

MgCl2 for 33% RH;
*K2SO4 for 97.6% RH;
Mg(NO3)2 for 54% RH