Dew Point Analyser DP-200


Dew Point Analyser DP-200

HNL markets a full range of Hygrometers using state-of-the-art electronics to the standards & Specifications of MOISTURE SENSORS. They incorporate the most accepted & highly reliable, accurate, fast, stable and long life SENSORS having unique AUTOMATIC calibration feature and are equipped with single or dual alarms, adjustable over the complete range. They are ideal for rapid check or continuous online analysis of dew point or moisture content of air or gas in dryers or industrial processes.

  • Direct digital indication – no charts or graphs
  • Portable & continuous online
  • Accurate to 1 ppm moisture
  • Overall range – 110°c to 20°c
  • For high-pressure vacuum, general & hazardous area applications
  • With unique automatic calibration feature requires nothing but
  • Room air for calibration

The most important feature of the Sensors system is the automatic calibration facility. Each sensor is precisely manufactured so as to saturate with water vapor at its design maximum. Hence when the sensor is exposed to moisture above its maximum operating range, it will rapidly come into equilibrium at its design maximum and cease to respond to any further moisture. This forms the basis of automatic calibration.

The Sensor can be calibrated by simply exposing the sensor to an atmosphere which is “wetter” than the operating range of the sensor (Room Air is sufficient) and adjusting the Calibration control on the front panel of the instrument to display the maximum range. The sensor is Recalibrated and ready to use.

Re-calibrations can be carried out in-situ and without taking recourse to any special equipment or skilled personnel. The net result is reduced downtime. Minimum Calibration costs & immediate verification of the system.


Sensor High capacitance aluminum oxide, intrinsically safe certified
Sensor Guard Sintered bronze
Sensor Mounting 14 x 12.5 mm STD. Auto thread
Sensor Active Length 76.2 mm
Sensor Overall Length 143 m
Electrical Connection Standard TV socket
Minimum Resolution 0.1°C for Dew point
(Digital Display) 01 PPM for moisture
Flow Rate to Sensor 2 to 5 LPM (Optimum)
Maximum Operating Pressure 340 bar
Warm Up < 60 Seconds
Operating Temperature 0 to 50 °C
Repeatability 0.3 °C Dew point
Automatic Calibration Potentiometric adjustment on front of panel
Typical Response Time Wet to Dry – (23000 to 100 PPM) : < 40 seconds
Dry to Wet – (100 to 23000 PPM) : <10 seconds
Display 3 1/2 Digit LED/LCD or 4” Precision Analogue Meter
Power 240 V or 110 V AC or 12 V Dry Cells or Rechargeable Batteries with charger
Alarms One (wet) adjustable over range
Two (wet & dry) adjustable over range
Housing IP 65


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