The THA2 is a multi-function product that monitors Temperature, Humidity and Dew Point, provides alarms for out of range conditions, and continuously logs data. It consists of a base unit with an easy to read display, and a remote sensor probe that can support cable lengths of up to 300 feet. The unit comes with a 15 feet sensor cable.
The alarm function monitors the temperature, humidity, and dew point once every second. If any of the readings reach an alarm threshold, the unit generates an alarm by turning on a beeper and a dry contact relay. The relay can be connected to a telephone dialer, light, or a bell. The delayed alarm feature can reduce false alarms, by ignoring short duration alarm conditions. The unit will also generate and alarm on probe failure.
The logger function records the temperature humidity and dew point into internal non-volatile memory at a user specified interval. The recording is performed continuously after the unit is turned on. No computer setup is necessary to start logging, and all logging settings can be viewed or changed through the front panel functions. When the internal memory becomes full, the recording rolls over, overwriting the oldest recorded data. For a 2 minute recording rate, this provides the user with an 11 day history of the temperature, humidity, and dew point data. This data can then be reviewed with PC software provided with the unit.
All the operating settings of the THA2 can be changed from the front panel, without the need for a computer. The two line display provides an easy to read means of viewing, or changing settings according to the user's requirements. The unit will simultaneously support review of logged data on a computer, while continuously recording new data.