www.davidson.com.au - General Eastern Humidity and Moisture

Simultaneously measure and display dew point, temperature, and pressure
Display any humidity parameter
Ethernet ready, so you can access GE Optica hygrometers via the Internet for remote monitoring applications
Data logger function lets you record & upload weeks of data
Primary NIST Traceable Humidity Transfer Standard
Accuracy to +/- 0.15°CAccurate: ą1% RH from 10-70% RH & ą1.5% RH from 70-90% RH

The Optica hygrometer, a standard choice for water vapor measurement, simultaneously measures dew point, temperature, and pressure. It also enables you to access the data for remote monitoring applications. The Optica Hygrometer offers precision dew point measurement. Precisely controlled by GE's chilled mirror sensing technology - providing NIST traceable humidity,temperature and pressure measurement anywhere via the worldwide intranet.

The Optica Hygrometer measures dew point temperature by regulating the temperature of a polished metal mirror by the use of optical feedback such that a constant mass of dew or frost is maintained. The temperature of the mirror is measured with a precise PRTD and is by definition equal to the dew or frost point.