Vaisala HMT140 - Wireless Temperature and Humidity Logger

Performance

The HMT140 incorporates Vaisala HUMICAP^® technology that measures relative humidity and temperature accurately and reliably. The Vaisala HUMICAP^® is resistant to dust and most chemicals. Alternatively, the HMT140 can connect to RTD’s, 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 data logger can operate for 18 months continuously, or longer if using the batteries only as backup to the optional external power source.

Optional local display allows the HMT140 to display process parameter values and any limit warnings. All data is logged locally and uploaded to the Vaisala Continuous Monitoring Software at preset intervals and during parameter excursions. The data logger enclosure is optimized for use in cleanrooms. The smooth surface of the enclosure makes it easy to clean and the enclosure material is chosen to tolerate purifying agents.

Interchangeable Probe

The HMT140 data logger uses a fully interchangeable relative humidity probe. The probe can be easily removed and replaced with a new one without having to adjust the data logger, which allows for easy and quick recalibration of the data logger. The probe can be adjusted using one of Vaisala’s portable meters as a reference.

Available Options

The HMT140 data logger is available as wall mounted or with remote probe. For high temperature applications or where space is limited, the remote probe is ideal. The optional LCD display is operated using a power-saving infrared sensor that, when activated, shows the measurement results of selected parameters displayed simultaneously on two separate rows.

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