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
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 HMP9 combines a miniature 5 mm probe head with fast-response, high-accuracy humidity and temperature measurement for tight spaces and rapidly changing environments.
Humidity accuracy up to ±0.8% RH
Temperature accuracy up to ±0.1 °C
−40 to +120 °C probe-head measurement range
Standalone Modbus RTU or Vaisala Indigo transmitter operation
The Vaisala Indigo200 Series is the standard transmitter platform for one interchangeable Indigo-compatible smart probe, providing local display and practical automation-system connectivity.
Indigo201 with three analog outputs and two relays
Indigo202 with Modbus RTU and two relays
Colour display with numerical and graphical views
IP65 enclosure for industrial measurement applications
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 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 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
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 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
The Vaisala HMP4 provides high-accuracy humidity and temperature measurement in compressed air, breathing air, industrial gases, vacuum systems and other processes operating at pressures up to 100 bar.
Operating pressure below 100 bar, including vacuum applications
Humidity accuracy up to ±0.8% RH
Temperature range from -70 °C to +180 °C
Standalone Modbus RTU or connection to an Indigo transmitter
The Vaisala HMP1 is a high-accuracy, interchangeable humidity and temperature probe for indoor spaces. It connects directly to an Indigo200 or Indigo300 transmitter to create a compact wall-mounted measurement system.
The Vaisala HMP5 provides high-accuracy humidity and temperature measurement in ovens, dryers, kilns and other processes operating at temperatures up to +180 °C.
Humidity accuracy up to ±0.8% RH
Temperature accuracy up to ±0.1 °C
−70 to +180 °C probe-head measurement range
Standalone Modbus RTU or Vaisala Indigo transmitter operation
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