CS Instruments DP 400 mobile - Mobile Dew Point Measurement with Pressure Sensor

For measurement of all humidity parameters under pressure up to 16 bar.


For measurement of all humidity parameters under pressure up to 16 bar. The portable dew point meter with integrated, rechargeable battery has been developed especially for the eld use. Besides a highly precise dew point sensor the device also contains a precise pressure sensor up to 16 bar. So in addition to the dew point in °Ctd, the temperature in °C and the line pressure in bar also further moisture parameters (% RH, mg/m3, g/m3) as well as pressure-dependent measuring values (g/kg, ppm v/v, atm. dew point °C) can be calculated.


CS Instruments

CS Instruments

CS Instruments GmbH & Co. KG with locations in 24955 Harrislee and 78052 Villingen-Schwenningen/ Tannheim, is managed by Dipl. Eng. (FH) Wolfgang Blessing as sole Managing Director.

CS Instruments GmbH was established in the year 2002 by Christian Schuldt and Wolfgang Blessing as equal shareholders/Managing Directors.

Wolfgang Blessing already was sound a specialist on the sector of compressed air technology resp. industrial measurement technology long before the establishment of CS Instruments GmbH in the year 2002. Prior to the foundation of CS Instruments GmbH Dipl. Ing. (FH) Wolfgang Blessing acted for more than 10 years as primarily responsible product manager for industrial measurement technology at a worldwide known manufacturer of measuring instruments for compressed air and gases in the Black Forest. The technical knowledge and experience matched with the long-term practical knowledge was the corner stone for the success of CS Instruments.


  • Precise dew point measurement down to -80°Ctd
  • Robust case for field use
  • Integrated pressure measurement up to 16 bar
  • Integrated measuring chamber with integrated dry container protects the dew point sensor during transport and grants a quick adaptation time
  • Long-time stable humidity sensor: precise, insensitive against dewing, quick adaptation time
  • Optionally available: 2 further sensor inputs for external sensors
  • Optionally available: Integrated data logger


Specially designed for field applications


  • Display: 3.5″ touch screen
  • Measuring range: -80…+50 °Ctd
    -20…+70 °C
    0…100% RH
    0…16 bar ± 0.5 %
  • Accuracy: ± 1 °C at 50…-20 °Ctd
    ± 2 °C at -20…-50 °Ctd
    ± 3 °C at -50…-80 °Ctd
  • Moisture parameters: g/m³, mg/m³, ppm V/V, g/
    kg, °Ctdatm, % RH
  • Interface: USB interface
  • Data logger option: 16 GB SD memory card
    (100 million values)
  • Power supply for external sensors:
    Output voltage: 24 VDC
    ± 10%
    Output current: 120 mA
    in continuous operation
    Power supply: Internal rechargeable LiIon batteries, approx. 12
    h continuous operation,
    4 h charging time
  • Process connection: 6 mm plug connections
  • Ambient temperature: 0…+50 °C
  • EMC: DIN EN 61326-1

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