- Out-of-Stock
HMM100 catalogue
Humidity Module HMM100
872KB
Vaisala HMM100 Humidity Module for Environmental Chambers
The Vaisala HMM100 provides reliable humidity measurement and a configurable analog output for integration into environmental chambers and OEM equipment.
- 0–100% RH measurement range
- Relative-humidity or dew-point output
- Current and voltage output options
- Plastic or stainless-steel probes for temperatures up to +180 °C
Vaisala HMM100 Humidity Module
The Vaisala HUMICAP® HMM100 is an open-frame humidity module designed for integration into environmental chambers and OEM equipment. It provides a single configurable analog output for relative humidity or dew point and offers several probe, cable, filter and electrical configurations.
The separate probe allows the sensing point to be installed inside the chamber while the component board remains in a protected and serviceable location. Depending on the selected configuration, the HMM100 can provide a loop-powered 4–20 mA output or a configurable current or voltage output.
Designed for Environmental Chambers
The HMM100 measures relative humidity from 0–100% RH and can output either relative humidity or dew-point temperature. Full temperature compensation supports measurement across changing chamber conditions, while the available probe and filter options accommodate different temperatures and installation requirements.
Plastic and stainless-steel probe versions are available. With a suitable probe and filter, the measurement probe can operate at temperatures up to +180 °C. The component board must remain within its specified operating-temperature range.
Analog Output Options
The HMM100 is suitable for chamber controllers and data-acquisition systems that accept conventional analog signals. The required output arrangement must be selected when specifying the module.
- Two-wire model: loop-powered 4–20 mA output.
- Three-wire model: configurable 0–20 mA or voltage output.
- Selectable parameter: relative humidity or dew point.
The three-wire version can be configured for 0–1 V, 0–5 V, 0–10 V or 1–5 V output according to the controller input and module configuration.
Practical Calibration and Maintenance
The HMM100 uses the Vaisala HUMICAP® 180R sensor for stable humidity measurement. Two adjustment trimmers on the component board allow humidity offset and gain to be adjusted during field calibration.
A service connection is also available for configuration and calibration using the appropriate Vaisala service cable and software. Calibration frequency should be based on chamber conditions, measurement criticality, operating temperature and the applicable quality requirements.
Key HMM100 Features
- Open-frame module for environmental-chamber and OEM integration
- 0–100% RH measurement range
- Relative-humidity or dew-point output
- Two-wire 4–20 mA model
- Three-wire current and voltage output model
- Plastic or stainless-steel probe options
- Standard and extended plastic-probe options
- Probe-cable lengths available according to probe type
- Field adjustment using component-board trimmers
- Optional IP65 module housing and installation accessories
HMM100, HMM105 or HMM170?
All three modules are designed for integration into environmental chambers or OEM equipment. The correct model depends mainly on the controller interface, required outputs, chamber conditions and maintenance functions.
| Selection point | Vaisala HMM100 | Vaisala HMM105 | Vaisala HMM170 |
|---|---|---|---|
| Best suited for | Conventional chambers requiring one analog measurement output | OEM chambers and incubators with direct I2C controller integration | Demanding chambers requiring higher accuracy, multiple outputs or condensation protection |
| Measured parameters | Relative humidity or dew point | Relative humidity or dew point | Relative humidity, temperature, dew point and other calculated parameters |
| Humidity range | 0–100% RH | 0–100% RH | 0–100% RH |
| RH accuracy at −20 to +40 °C | ±2% RH from 0–90% RH | ±2% RH from 0–90% RH | Approximately ±1.0 to ±1.7% RH, depending on temperature and RH |
| Primary output | One configurable current or voltage output | Digital I2C | Modbus RTU and three configurable analog outputs |
| Probe temperature capability | Up to +180 °C, depending on probe and filter | Up to +180 °C continuously; +200 °C short-term peak | −70 to +180 °C |
| Probe arrangement | Plastic or stainless-steel probe with several cable and length options | Detachable 12 mm probe with fixed 300 mm flexible cable | 12 mm stainless-steel probe with 2, 5 or 10 m cable options |
| Condensation and chemical protection | Standard HUMICAP measurement without active probe heating | Standard HUMICAP measurement without active probe heating | Optional sensor purge, probe heating and sensor warming |
| Configuration and servicing | Service port and on-board adjustment trimmers | Configuration and adjustment through the I2C interface | Vaisala Insight software through the integrated service port |
Quick selection: choose HMM100 when the chamber controller needs a conventional analog signal. Choose HMM105 when direct I2C communication and a compact detachable probe are required. Choose HMM170 for demanding installations needing improved accuracy, Modbus RTU, several analog outputs, longer probe cables or active condensation protection.
Information Required for HMM100 Selection
Before ordering the HMM100, confirm whether the controller requires a two-wire or three-wire connection, the required current or voltage signal, the output parameter, probe material, probe length, cable length, protective filter and maximum chamber temperature.
For existing equipment, provide the current HMM100 model code, wiring arrangement, power supply and controller scaling. When planning an upgrade to HMM170, the circuit-board footprint may simplify the mechanical work, but the electrical connections, controller programming and output configuration must still be checked.
Vaisala HMM100 Supplier and Technical Support in Malaysia
Seacom Process Instruments supplies and supports the Vaisala HMM100 Humidity Module in Malaysia for environmental chambers, stability chambers, climatic test equipment and OEM humidity-measurement systems.
Our team can assist with probe material, cable length, filter, analog output, power supply, installation accessories, controller scaling and calibration planning. We can also help compare the HMM100 with the digital HMM105 and advanced HMM170.
Contact Seacom with your chamber operating range, required output, controller input, installation dimensions and probe conditions so we can recommend a suitable HMM100 configuration.
You might also like
The Vaisala HMM105 provides reliable humidity measurement for integration into environmental chambers, incubators and OEM equipment.
- 0–100% RH measurement range
- I2C output for relative humidity or dew point
- Detachable 12 mm probe with 300 mm flexible cable
- Probe withstands +180 °C continuously and +200 °C temporarily
The Vaisala HMM170 provides accurate and stable humidity and temperature measurement for demanding environmental chambers, including vacuum and pressurised applications.
- Humidity accuracy up to ±1.0% RH
- Temperature measurement from −70 to +180 °C
- Modbus RTU and three configurable analog outputs
- Probe heating, sensor warming and chemical-purge options
16 other products in the same category:
The Vaisala HMT370EX provides intrinsically safe humidity and temperature measurement with HMP-series probes. The new DMP370 configuration combines the HMT370EX transmitter with a DMP37X DRYCAP® probe for low-dew-point measurement in hazardous locations.
- HMP probes for relative humidity and temperature
- DMP370 dew-point measurement from −70 to +10 °C Td/f
- Two two-wire 4–20 mA outputs
- Certified configurations for hazardous gas and dust areas, up to Zone 0 / 20
- Detachable probes and traceable calibration
DMP370 availability: Vaisala plans first deliveries for Q1 2027. Contact Seacom for configuration and project lead time.
The Vaisala HMP8 provides high-accuracy humidity and temperature measurement in compressed air, refrigerant dryers and pressurised industrial processes up to 40 bar.
- Humidity accuracy up to ±0.8% RH
- Operating pressure from vacuum to 40 bar
- Adjustable insertion depth with two probe lengths
- Optional ball valve for insertion and removal under process conditions
The Vaisala Indigo300 is a rugged industrial transmitter for one Vaisala Indigo-compatible smart probe, providing local measurement display and up to three configurable analog outputs.
Its corrosion-resistant IP66 metal enclosure, flexible probe mounting and interchangeable probe design make Indigo300 suitable for humidity, temperature, dew point, CO2, moisture in oil and other demanding industrial measurements.
The Vaisala HMT330 Series was a flagship industrial transmitter platform for humidity, temperature and calculated moisture parameters. It is discontinued and replaced by an Indigo500 transmitter with the HMP probe selected for the application.
- HMT331 wall mounting → HMP1 with Indigo500
- HMT333 ducts and tight spaces → HMP3 or HMP9 with Indigo500
- HMT334 high pressure and vacuum → HMP4 with Indigo500
- HMT335 high temperature → HMP5 with Indigo500
- HMT337 high humidity → HMP7 with Indigo500
- HMT338 pressurised pipelines → HMP8 with Indigo500
The Vaisala HMM105 provides reliable humidity measurement for integration into environmental chambers, incubators and OEM equipment.
- 0–100% RH measurement range
- I2C output for relative humidity or dew point
- Detachable 12 mm probe with 300 mm flexible cable
- Probe withstands +180 °C continuously and +200 °C temporarily
The Vaisala HMW90 Series provides high-accuracy humidity and temperature measurement for demanding indoor HVAC and controlled-environment applications.
- Humidity accuracy up to ±1.7% RH
- Analog or Modbus RTU output models
- Optional display and configurable relay
- Replaceable measurement module with calibration certificate
The Vaisala HMT140 Wi-Fi Data Logger has been discontinued and is no longer recommended for new monitoring systems.
- Primary replacement: Vaisala RFL100 with AP10 VaiNet Access Point
- Existing HMT140 installations can continue to be supported
- Migration should be checked against the existing sensor and input type
- Contact Seacom for replacement selection and viewLinc compatibility
The Vaisala HMP155 provides stable humidity and temperature measurement for automatic weather stations, road-weather systems, airports, research sites and demanding outdoor monitoring.
- Relative-humidity measurement from 0 to 100 %RH
- Operating range from −80 to +60 °C
- HMP155A with two analogue voltage outputs
- HMP155D with RH voltage output and passive four-wire Pt100 temperature
- HMP155E with RS-485 digital output
- Optional warmed probe, chemical purge and additional temperature sensor
The Vaisala HMT120 and HMT130 provide accurate, stable humidity and temperature measurement for cleanrooms, laboratories, data centres and demanding HVAC applications.
Product transition: HMT120/HMT130 are expected to be phased out. For new projects, the Vaisala Origo10 is the recommended replacement platform.
- Humidity accuracy up to ±1.5% RH
- HMT120 loop-powered 4–20 mA output
- HMT130 voltage outputs, RS-485 and relay
- Interchangeable fixed or remote measurement probe
- Origo10 recommended for new installations
The Vaisala MGP261 measures methane, carbon dioxide and humidity directly in raw biogas. Its in-situ design avoids a separate sampling system and helps operators monitor gas quality while protecting downstream equipment.
- Measures CH4, CO2 and water vapour in one probe
- 0–100 vol-% measurement range for methane and carbon dioxide
- Humidity output as 0–25 vol-% H2O or −10 to +60 °C dew point
- Heated optics help prevent condensation in wet biogas
- Three isolated 4–20 mA outputs and RS-485 Modbus RTU
- Ex-certified construction for direct installation in hazardous process areas
The Vaisala HMDW80 Series provides cost-effective humidity and temperature measurement for routine HVAC and building-automation applications.
- Humidity accuracy up to ±3% RH
- Wall, duct and outdoor installation models
- Current or voltage output configurations
- Replaceable INTERCAP® humidity sensor
The Vaisala GMW90 Series provides stable wall-mounted carbon-dioxide and temperature measurement, with optional humidity, for demanding HVAC and building-automation applications.
- Carbon-dioxide measurement from 0 to 5000 ppm
- CO₂ accuracy up to ±(30 ppm + 2% of reading)
- Temperature measurement from −5 to +55 °C
- Optional HUMICAP® relative-humidity measurement from 0 to 95 %RH
- Voltage, current or Modbus RTU output models
- Display and CO₂ status-indicator options
- Field-exchangeable calibrated measurement modules
- Traceable three-point CO₂ calibration certificate included
The Vaisala XMW85 Series provides reliable indoor CO2, humidity and temperature measurement for demand-controlled ventilation, smart buildings and indoor air-quality monitoring.
All models support Modbus RTU over RS-485, with two-in-one and three-in-one measurement configurations and optional metric or non-metric displays.
The Vaisala XMP10 Series comprises compact humidity and temperature probes offering accuracy levels up to ±1% RH and ±0.1 °C for demanding HVAC, data-centre and critical-environment applications.
The probes feature analog or Modbus RTU outputs, a standard M8 connector, an IP65-rated body and compatibility with Vaisala Origo10 modular HVAC transmitters.
The Vaisala HMP3 is a high-accuracy, field-maintainable probe for industrial HVAC, air-handling units, cleanrooms, paint booths and environmental chambers.
- Humidity accuracy up to ±0.8% RH
- Temperature measurement from −40 to +120 °C
- Field-replaceable filter and HUMICAP sensor option
- Standalone Modbus RTU or Vaisala Indigo transmitter operation
The Vaisala HMP7 is designed for continuously humid, rapidly changing and near-condensing environments. Probe heating helps prevent condensation while maintaining reliable process measurement.
- Humidity accuracy up to ±0.8% RH
- Probe heating for condensation prevention
- −70 to +180 °C probe-head measurement range
- Standalone Modbus RTU or Vaisala Indigo transmitter operation