The ATH-2 range of temperature and humidity sensors are easy to maintain, with an exchangeable calibration chip to ensure accurate and reliable measurements over time. Available with either an analogue (ATH-2A) or SDI-12 (ATH-2S or ATH-VPD) output, these sensors are ideal for long-term installations.

Humidity and temperature sensors available today come in varying degrees of quality – in ease of long-term maintenance, stability and durability. In response to the experiences of researchers and customers, the ATH range was developed to have greater instrument accuracy, easier upkeep, and an extended life. These sensors are ideally suited to in-canopy measurement and for use in the measurement of Vapour Pressure Deficit to predict the response of plants to environmental evaporative demand.

The ATH-VPD performs onboard Vapour Pressure Deficit calculations resulting in a sensor output available for VPD measurement and calculation with the ATH-VPD.