HMT140 Wi-Fi Data Logger by Vaisala | environmental monitoring for GxP applications | Scoop.it
The Vaisala HMT140 wireless data logger is designed for humidity, temperature and analog signal monitoring in warehouses, freezer and cryogenic farms, laboratories, blood banks and many other life science applications.
Performance The HMT140 incorporates Vaisala HUMICAP® technology to measure relative humidity and temperature accurately and reliably. The Vaisala HUMICAP® sensor is resistant to dust and most chemicals. Alternatively, the HMT140 can connect to Resistance Temperature Detectors (RTDs), Voltage, Current and Contact sensors, making the HMT140 the most versatile Vaisala data logger for life science applications. Combining RTD and contact inputs, the HMT140 is ideal for monitoring chamber/door excursions. Using Wi-Fi connectivity, the HMT140 can connect through any wireless access point. The battery powered logger can operate for 18 months continuously, or longer if using the batteries only as backup to an optional external power source. 

Optional local display allows the HMT140 to indicate process parameter values and any limit warnings. All data is logged locally and uploaded to the Vaisala Continuous Monitoring System (CMS) software viewLinc at preset intervals and during parameter excursions. Autonomous operation with audible and visual alarming (beep and flashing LED) ensures that local alerts are indicated independent of active network or server connection. The data logger's enclosure is optimized for use in cleanrooms with a surface that is easy to clean and tolerates purifying agents.

Interchangeable Probe The HMT141 version of this data logger uses a fully interchangeable relative humidity probe. This allows for quick recalibration of the data logger. The probe can be adjusted using one of Vaisala’s portable meters as a reference.  Other probes/device configurations are:

 HUMICAP® Humidity and Temperature Probe—HMT141RTD Temperature Inputs w/5M Probes —HMT143Voltage Inputs (0-5 VDC) —HMT144Voltage inputs (0-10 VDC) —HMT145Current Inputs (4-20mADC) —HMT146Boolean Inputs —HMT147 RTD Temperature Input w/5M Probe & Boolean Input — HMT148
Via WiFiNovation