The Easidew Online Hygrometer has been designed to make continuous measurement of the dew point in air and gases simple and reliable. The 1/8 DIN display unit is connected to the Easidew Transmitter sensor module, which may be permanently installed in a plant or process location at a distance of up to 800m (2625 feet) from the display. An analog output is provided for re-transmission to a chart recorder or data-logger. The two alarm relays are adjustable from the front panel and can provide control of the monitored process. The Easidew Online can be quickly incorporated into your air or gas management and control system reducing the cost of ownership.

Product Features

  • Dew point or ppmV moisture content
  • -100 to +20°C (-148 to +68°F) dew point range
  • Fast response
  • Analog and digital outputs
  • Dual alarms
  • Easy to read display
  • Excellent sensor protection
  • NEMA 4 Transmitter, NEMA 12 Monitor (front panel only)

Measurement Range (dewpoint) -100 to +20°Cdp (-148 to +68°Fdp)
0–3000 ppmv
ppmV output or non-standard dew-point range must be specified at time of order
Accuracy (dp) ±2°Cdp (±3.6°Fdp)
Response Time 5 mins to T95 (dry to wet)
Repeatability 0.5°Cdp (0.9°Fdp)
Electrical output/input
Output Signals 4–20mA or 0-20mA
maximum load resistance 500 Ω
Supply Voltage 85 to 264 V AC, 50/60Hz
Load Resistance Max 250 Ω @12 V / 500 Ω @ 24 V
Current Consumption 60 mA max
Operating conditions
Operating Humidity 0–100% RH
Operating Temperature
Monitor: 0 to 50°C (+32 to +122°F)
Sensor:  -40 to +60°C (-40 to +140°F)
Operating Pressure 45 MPa (450 barg / 6500 psig) max
Mechanical specification
Ingress Protection Monitor: IP65 (NEMA 12) front panel only
Sensor:  IP66 (NEMA 4)
Dimensions Monitor: 1/8 DIN case, 96 x 48 x 100mm (3.77 x 1.88 x 4”) including clearance (W x H x D)
Sensor:  132 x 27mm (5.19 x 1.06”) (length x A/F)
Filter HDPE
Sensor weight 150g (5.3oz)
Electrical Connections Monitor: Screw terminals
Sensor:  4 pin socket provided
Alarm Front panel configuration of alarm points
Sensor Cable 0.8m (2.6 ft) standard
800m (2625 ft) max
Mains Cable 2m (6.5 ft) cable supplied

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