S4000 Remote Precision Dew-Point Hygrometer

The S4000 Remote is a precision laboratory dew-point hygrometer with the ultimate accuracy, reliability and long-term performance for humidity measurement and calibration. The product offers unmatched accuracy and reliability in dew-point measurements of air and gas systems in calibration laboratories.

Its powerful three-stage Peltier thermoelectric heat pump gives a depression capability of more than 70°C at normal laboratory temperature. The S4000 Remote comprises a free-standing sensor and a 19" x 3U monitor unit, connected by individual power and signal cables for the most stable and precise dew-point control.

Product Features

  • Super-sensitive dual optics
  • Three-stage Peltier cooling
  • Precision 4-wire Pt100 Sensor
  • 0.1°Cdp accuracy
  • Dual multi-function LED display with unit indicator
  • Current, voltage outputs and RS232 digital communications
S4000 Remote

Technical Specification

Measurement Technology Cooled Mirror
Measurement Units °Cdp, °Fdp, °C, °F temp; % RH, ppmV, ppmW, g/m³, g/kg, ppmW for SF6
Measurement Range -80 to +20°Cdp (remote)
-80 to +85°Cdp (climatic sensor)
Temperature Measurement 4 wire 100 Ω 1/10 DIN class B Pt100
Accuracy ±0.1°Cdp (typical system accuracy)
Sensitivity 0.01°C
Response Speed 0.5°C/sec plus setting time (dew-point dependent)
Repeatability Better than 0.1°C
Sample Flow Rate 0.1 to 0.7 l/min(recommended)
Sensor Pressure 1 MPa (1 barg) (max)
Electrical output/input
Outputs Analogue: 10 mV/ °Cdp, 4-20 mA
Digital:       RS232 - data hold, ABC status, optics alarm (logic)
Output Ranges
Display Resolution 0.01 for all units
Power Supply 90 to 265 V AC; 50-60 Hz (monitor)
Operating conditions
Sensor Operating Temperature -30 to +30°C (remote)
-30 to +90°C (climatic)
Mechanical specification
Sensor Housing Type Bench case; space frame (climatic version)
Dimensions 268 x 300 x 133mm (w x d x h)
Weight 5.5kg
4.8kg (climatic version)
Cable Length 50m (max)
Display Dual 6-digit LED, with 2 digit eng unit indicators
Dual Optics Detection Wide band red LED with dual photo sensors
Integrated Flow Meter 0 to 1 l/min


Automotive Metrology

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