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Dew Point Monitors
APPL Dew Point monitors may be used to continuously monitor the dew point in compressed air systems, or in low pressure air systems such as those used in the drying of plastic resins or other moisture sensitive products. For compressed air systems, the monitors are available in two dew point ranges. The first is for use with systems using desiccant air dryers which normally operate within a pressure dew point range of -9 to -40ºC. The second is for refrigerant air dryers which normally operate within a dew point range above 0ºC.
The monitors may be used to provide a visual dew point display, and additionally, to provide a set of dry output contacts for alarm purposes, or for the operation of associated equipment. The same hygrometer board provides dew point monitoring functions for the APPL ""Purge Economizer Controls"" system used on twintower regenerative compressed air dryers. Ask for the ""Purge Economizer Controls"" bulletin for information on retrofit control panels to allow your twintower air dryer to operate at maximum efficiency.
- Easy to read digital dew point display.
- Dry relay contact output for remote indication of alarms, or control of process functions.
- Can be used to monitor moisture sensitive products
- Dew point range may be converter to display either Celsius or Fahrenheit
- Standard units are suitable for compressed air monitoring to 150 PSIG. Optional systems available for monitoring compressed air pressures to 710 PSIG.
- Also see APPL’s “Purge Economizer Control$” using dew point monitoring to monitor and reduce purge consumption on twintower compressed air dryers.
- Fast response time
- Digital LED display
- Dry relay contact output
- Adjustable set point
- 4-20 mA/0-5 VDC Linear analogue output
- -9º to -40ºC (+15º to -40ºF) or -12 to +21ºC (+10 to +70ºF) dew point ranges easily convertible optional ranges available
- 1/60/120V or 24VDC other voltage on request
- Economical replaceable sensor (no calibration required)
- Sample air sensor block with needle valve for flow regulation