Vaisala Wi-Fi Data Logger HMT140

Vaisala Wi-Fi Data Logger HMT140

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Wi-Fi Data Logger HMT140
For monitoring temperature, relative humidity, current, voltage & door contacts

The Vaisala HMT140 Wi-Fi data logger is designed for humidity, temperature and analog signal monitoring in cleanrooms, warehouses, freezers, laboratories, blood banks and other life science applications. This battery-powered device simplifies installation and eliminates the need for power or network cables. Combined with viewLinc monitoring software, the HMT140 ensures continuous historical and real-time data with reliable remote alarming.



  • Quick and easy Wi-Fi connectivity to viewLinc monitoring software
  • Connectivity provided through your existing Wi-Fi network
  • Autonomous operation and local alarms ensure alerting capability regardless of network connectivity
  • Local data storage provides continuous fail-safe operation - even during power or network outage
  • Two inputs for voltage, current, contact, RTDs or temperature & RH
  • Accurate and reliable multi-signal measurements from industry best sensors
  • IP65 (NEMA 4) rated housing is resistant to dust and chemicals
  • Traceable to SI units through national metrology institutes
  • ~ 18-month battery life
  • Optional LCD display


Key Benefits

Easy to install and relocate
Wireless communication utilizes existing Wi-Fi network and is ideal for facilities without available wired infrastructure and for applications in which measurement points move regularly.
Internal Data Storage
Onboard memory stores data during a power outage or network downtime so no data is ever lost ensuring gap-free records. The logger’s history is always transmitted to the viewLinc monitoring system once communication is restored.
Interchangeable temperature/RH probes for easy field calibration
The HMP110 digital humidity and temperature probe is field replaceable and contains all calibration details. Monitoring system viewLinc's event log will record any sensor swap-outs, ensuring your audit trail is complete and compliant.

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