Water analyzer 8800 Series

tracedew-pointportable

​The 8800 series uses field proven aluminum oxide (Al2O3) sensing technology to accurately detect trace moisture on either a continuous or spot checking basis. All Al2O3 sensors share the same basic operating principle: the capacitance measured between the sensor’s aluminum core and gold film deposited on the oxide layer varies with the water content. The 8800 series moisture sensor employs unique Hyper Thin Film (HTF) technology, which offers three major structural improvements in Al2O3 sensor design. These structural changes, noted below, provide the user with increased sensitivity, greater stability and a quicker response time when compared to other conventional aluminum oxide sensors on the market today. Barrier Layer In HTF sensors, the transition between the aluminum oxide and the aluminum core is sharp and clearly defined. This inner barrier layer produces a capacitor with its electrodes very close together, which, in turn, leads to the sensor’s high wet to dry capacitance ratio. The benefit of this high ratio is that drift in capacitance, due to undesirable factors, is much less significant. This is clearly a benefit when comparing HTF versus conventional sensors where temperature sensitivity and aging drift are concerned. An added benefit associated with this sharp transition in the barrier layer is a reduction in metal migration, one of the major causes of aging drift in conventional sensors.