DPT-2011 Single Stage Dew Point TransmitterGeneral Description The DPT-2011 Single Stage Dew Point Transmitter uses the chilled mirror principle to determine the absolute humidity of any gas in terms of its dew- or frost-point temperature. It was specifically designed for laboratory, field and industrial process applications. The control electronics maintain the sensor mirror to the equilibrium point where a dew or frost layer is established on the mirror surface. A platinum resistance thermometer directly monitors the mirror temperature. Depending on the actual dew point, settling time from ambient may take a few seconds to one minute. A local digital display and analog and digital interfaces are provided. Features
Applications Chilled mirror dew point hygrometers are used in industrial process-control and laboratory applications to ensure product quality, including:
Mirror Access A front-mounted threaded hole plug supports access to the chilled mirror for periodic cleaning. Sample gas typically passes through the system via a flow gauge and filter tubing connections. Flow rates from 0.5 to 1.0 standard cubic feet per hour (SCFH).
User Interface A front panel digital meter indicates the current dew point temperature. A pushbutton lets you rapidly check that the mirror is clean without having to open the sensing chamber for inspection. An LED indicates when cleaning is required. Both RS-232 serial and 4-20mA analog outputs are provided. The serial interface supports a graphical LabView™ application for MS-Windows9x/NT that permits you to view real time sensor data on a PC or Mac.
Mechanical Interface
Specifications
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