濕度露點偵測
SADP Portable Hygrometer
Portable hygrometer for rapid moisture checks or continuous use on flowing gas or air
Whether you need spot checks or continuous use, this portable hygrometer displays dew point temperature and water vapour to less than one part per million on an easy-to-read, large, meter dial. The calibration is accurate for different gases because the reading is specific to water vapour. We designed the SADP to operate at atmospheric pressure, guaranteeing accuracy to better than one part per million of trace moisture in very dry air or gas.
The combination of the desiccant head assembly, dew point sensor and AutoCal function is key to the SADP’s performance. Together, these three features are vital, working in unison to ensure a rapid response time from dry to wet conditions. Shaw Moisture Meters ultra high capacitance aluminium oxide sensor provides improved performance alongside reliability and exceptional quality.
For convenience, the SADP portable hygrometer is always available for rapid spot checks of trace moisture in compressed air and gases. This is possible because the desiccant head assembly ensures a quick response from the sensor. Furthermore, note the uncomplicated design of the SADP. Unlike some other methods, there are no confusing dials and switches for calibrating, cooling and servicing.
In terms of calibration, the AutoCal function allows span verification and adjustment on site without the need for additional equipment, thereby ensuring accuracy between laboratory calibrations for users. To achieve this, we precisely manufacture our sensor to saturate with water vapour at its design maximum. When you expose the sensor to moisture above its maximum operating range, it rapidly comes into equilibrium and then ceases to respond to any further increase in moisture. Consequently, this forms the basis of AutoCal. The benefits of AutoCal include: reduced downtime, minimised calibration costs and immediate verification of the system. While it is acceptable to perform AutoCal every two to three months, do not replace your annual laboratory calibration against a known reference standard with AutoCal.
Taking a spot check reading with the SADP portable hygrometer is a quick and simple process using minimum air/gas. Notably, this portable dew point meter is fully self-contained. It is also certified intrinsically safe to ATEX and IECEx standards, with CE and UKCA approvals, for use in hazardous environments. As a result, it is accurate, reliable and suitable for a wide range of industries including power generation, semiconductor manufacture and pharmaceuticals. Overall, it remains a popular choice of dewpoint meter for the spot check measurement of trace moisture.