S4000 Remote Precision Dew-Point Hygrometer

A precision laboratory dew-point hygrometer with the ultimate accuracy, reliability and long-term performance for humidity measurement and calibration.

Product Features

  • Super-sensitive dual optics
  • Three stage Peltier cooling
  • Precision 100 Ω 4-wire platinum resistance thermometer
  • 0.1°Cdp accuracy (0.18°Fdp)
  • Dual multi-function LED display with unit indicator
  • Current, voltage outputs and RS232 digital communications
S4000 Remote

Technical Specification

Measurement TechnologyChilled Mirror
Measurement Units°Cdp, °Fdp; °C, °F temp; % RH, ppmV, ppmW, g/m3, g/kg, ppmW for SF6
Measurement Range-80 to +20°Cdp (-112 to +68°F) (remote);
-80 to +85°Cdp (112 to +185°F) (climatic sensor)
Accuracy±0.1°Cdp (0.18°Fdp) (typical system accuracy)
Sensitivity0.01°C (0.018°F)
Response Speed0.5°C/sec + setting time (0.9°F) (dew-point dependent)
RepeatabilityBetter than 0.1°C (0.18°F)
Sample Flow Rate0.1 to 0.7 l/min (0.2 to 1.5 scfh) (recommended)
Sensor Pressure0.1 MPa (1 barg / 14.5 psig)
Electrical input/output
Output: Analog10 mV/ °Cdp, 4-20 mA
Output: DigitalRS232; data hold, ABC status, optics alarm (logic)
Output ranges
Display Resolution0.01 for all units
Power Supply90 to 265 V AC; 50/60 Hz (monitor)
Operating conditions
Sensor Operating
-30 to +30°C (-22 to +86°F) (remote);
-30 to +90°C (-22 to +194°F) (climatic)
Mechanical specifications
Sensor Housing TypeBench case; space frame (climatic version)
Dimensions268mm x 300mm x 133mm (w x d x h)
10.6 in x 11.8 in x 5.2 in (w x d x h)
Weight5.5kg; 4.8 kg (climatic version)
12.1 lbs; 10.6 lbs (climatic version)
Cable Length50 metres (164ft) (max)
DisplayDual 6 digit LED, with 2 digit eng unit indicators
Dual Optics Detection SystemWide band red LED with dual photo sensors
Integrated Flow Meter0 to 1 l/min (0 to 2 scfh)


Automotive Metrology

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