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SHAW SADP-D

Digital Portable Dewpoint Meter

Digital Portable Dewpoint Meter

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Description

The world-renowned SADP-D portable dewpoint meter is an easy-to-use portable hygrometer for fast and reliable trace moisture measurement. The SADP-D is suitable for a wide range of industries including power generation, semi-conductor manufacture and pharmaceuticals.

The key to the SHAW SADP-D dewpoint meter is the unique desiccant chamber assembly and the SHAW ultra high capacitance aluminium oxide sensor. Shaw Moisture Meters continuously develops their Al2O3 sensing technology to provide a dewpoint sensor with improved performance, reliability and exceptional quality. The unique desiccant chamber assembly design allows the sensor to stay dry when the dewpoint meter is not in use. This ensures the SADP-D is always available for rapid spot checks of moisture in gases and compressed air. Taking readings is a simple and speedy process with minimum air or gas usage.

The SADP-D is fully self-contained and certified intrinsically safe to UKCA, ATEX and IECEx standards, CE and UKCA approved. It is suitable for use in hazardous areas without the need for any additional accessories such as a Zener barrier or signal isolator.

Designed to operate at atmospheric pressure, this portable dewpoint meter features a single on/off switch, AutoCal (automatic calibration) potentiometer and a large, easy to read LCD display scaled in °C dewpoint or °F dewpoint. Supplied ready to use with batteries installed, the SADP-D also includes: a Certificate of Calibration traceable to National and International Humidity Standards, two metres of PTFE sampling hose, screwdriver, Allen key, pressure calculator, instruction manual and a specially designed heavy duty leather carry case with shoulder strap.

FEATURES

Features:

  • Guaranteed accuracy ±3 °C to ±4 °C (±5.4 °F to ±7.2 °F) dewpoint
  • Intrinsically safe for use in hazardous areas to ATEX: Ex II I G Ex ia IIC T6 Ga and IECEx: Ex ia IIC T6 Ga
  • Various ranges: overall range -100 °C to +20 °C (-148 °F to +68 °F) dewpoint
  • LCD display indication in °C of °F
  • Desiccant dry-down chamber for instantaneous readings
  • AutoCal (automatic calibration)
  • Standard “C” type battery operation
  • Self-contained, robust and reliable
  • Fully portable
  • Simple to operate
  • Over 150 hours continuous operation
  • Supplied with Certificate of Calibration traceable to National & International Humidity Standards

SPECIFICATION

SPECIFICATIONS
• Sensing Element: SHAW Ultra High Capacitance Aluminium Oxide Sensor
• Ranges

P (Purple): -100 to 0 °C dewpoint, 0 – 6,000 ppm(V)
S (Silver): -100 to -20 °C dewpoint, 0 – 1,000 ppm(V)
G (Grey): -80 to 0 °C dewpoint, 0 – 6,000 ppm(V)
R (Red): -80 to -20 °C dewpoint, 0 – 1,000 ppm(V)
B (Blue): -80 to +20 °C dewpoint, 0 – 23,000 ppm(V)
Intrinsic Safety Certification
ATEX: Ex II 1 G Ex ia IIC T6 Ga IEC
Ex: Ex ia IIC T6 Ga
AutoCal Field calibration/span check facility. Activated and operated via the potentiometer on the front of the instrument
Accuracy ± 3 °C (± 5.4 °F) dewpoint (Red/Silver) ± 4 °C (± 7.2 °F) dewpoint (all others) NPL traceable -90 °C to +20 °C (-130 °F to +68 °F)
Response Times
Wet to dry: -20 °C to -60 °C (-4 °F to -76 °F) – less than 120 secs
Dry to wet: -100 °C to -20 °C (-148 °F to -4 °F) – less than 20 secs
Sample Flow Rate Flow independent but ideally 2 to 5 litres per minute Max: 20 litres per minute
Display Digital: 4 ½ digit, LCD. Factory set to read either °C or °F dewpoint
Power Supply 9 V DC – six “C” type batteries (included)
Battery Life In excess of 150 hours continuous operation
Resolution 0.1 °C, 0.2 °F dewpoint or 0.1 ppm(V)
Repeatability Better than ±0.5 °C (±0.9 °F) dewpoint MECHANICAL
Dimensions and Weight Overall dimensions: 200 mm (w) x 225 mm (d) x 278 mm (h) Height (328 mm with head extended) Weight 4.5 kg
Operating Pressure Atmospheric to 0.3 barg
Operating Humidity (External) Maximum – 95% RH non-condensing
Operating Temperature -20 °C to +50 °C (-4°F to +122 °F) Storage Temperature-20 °C to +40 °C (-4°F to +104 °F)
Sensor Protection 316 sintered stainless steel filter – 50 micron
Weatherproof Classification IP66/NEMA 4X

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