SU4 – Sample Conditioning Unit

Designed for gas or general compressed air sampling

Product details

Shaw Moisture Meters Model SU4 sample conditioning unit is designed to reduce the dryer/process line pressure to give a pressure and flow suitable for measurement of trace moisture in process gases and dry compressed air.

The system is designed for gas or general compressed air sampling and allows the sensor to operate at atmospheric pressure. It combines a pressure regulator, sensor holder and a flow meter for up to 10 litres per minute (1 – 2 litres is usual for continuous use), mounted on a stove enameled backplate and is suitable for wall mounting.

The SU4 sample system conditions the flow of sample gas to the required 2 – 10 litres per minute at near atmospheric pressure for accurate and consistent sampling. Pneumatic connections with a choice of ¼”, ⅛” or 6 mm compression fittings are available, if required, for inlet and outlet.

Key features of SU4 – Sample Conditioning Unit

  • Shaw brand accurate held hygrometer
    Designed for gas or general compressed air sampling
  • Shaw brand accurate held hygrometer
    Reduced inlet pressure from up to 210 bar (3045 psi)
  • Shaw brand accurate held hygrometer
    Adjustable sample flow – up to 10 litres per minute
  • Shaw brand accurate held hygrometer
    All stainless steel fittings and pipework
  • Shaw brand accurate held hygrometer
    Inlet and outlet fittings with a choice of ¼”, ⅛” or 6 mm compression fittings
  • Shaw brand accurate held hygrometer
    Overall dimensions: 260 mm (h) x 160 mm (w) x 135 mm (d)
  • Shaw brand accurate held hygrometer
    Approximate weight: 1.6 – 1.8 kg
  • Shaw brand accurate held hygrometer
    Sampling options: Input pressure (pr): Up to 200 bar (MED), 400 bar (HI)
  • Shaw brand accurate held hygrometer
    Wall mounted with 4 x 5 mm mounting holes at 240 mm (h) x 140 mm (w)
  • Shaw brand accurate held hygrometer
    Optional filter unit available (for 200 bar variants only)
  • Shaw brand accurate held hygrometer
    Optional Firtree fittings for 6 mm id hose (low pressure only typically <8 bar)
moisture sensor, dewpoint sensor Shaw moisture sensor, SHAW dewpoint sensor, moisture measurement, dew-point

System accuracy

Each sensor is calibrated to provide an overall system accuracy of better than ±2 °C (±3.6 °F) dewpoint and supplied with a Calibration Certificate traceable to international standards.

Ordering information

  • Shaw brand accurate held hygrometer
    SU4-Me (¼”, ⅛” or 6 mm fittings) for 200 bar variant
  • Shaw brand accurate held hygrometer
    SU4-Hi (¼”, ⅛” or 6 mm fittings) for 400 bar variant

Please state required fittings with order.

Related products and accessories for SU4 – Sample Conditioning Unit

Product support for SU4 – Sample Conditioning Unit

Downloads for SU4 – Sample Conditioning Unit

SHAW SU4 sample system, compatible with moisture analyzers and dew point hygrometers, providing ideal conditions for dew point measurement in the toughest applications.

Model SU4 Specification Sheet

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