The world renowned Model SADP portable dewpoint meter from Shaw Moisture Meters offers an easy to use hygrometer for fast and reliable trace moisture measurement.

Designed to operate at atmospheric pressure, the Model SADP features a large, easy to read analogue indicator scaled in °C dewpoint, °F dewpoint and corresponding parts per million (ppm(v)) range. The TR versions of the Shaw SADP offer the 0-10 ppm(v) range expanded over the full scale, which is selected by means of the rotary switch on the front panel. This allows for accurate measurement below 10 ppm(v).

The key to the Shaw automatic dewpoint meter is the unique desiccant head and sensor assembly which allows the sensor to be kept dry between tests. This ensures that the instrument is always available for rapid spot checks of moisture in gases and compressed air.

Features

•  Analogue or Digital Display

•  Intrinsically Safe for use in Hazardous Areas

•  Automatic Calibration

•  Desiccant Dry-Down Chamber for rapid measurements

•  Over 150 hours continuous operation

•  Self Contained and fully portable

•  Simple to operate

Having been in production for nearly 50 years, this unit has stood the test of time and it’s popularity is demonstrated by the fact that it can be found in every industrialised country in the world. It remains the benchmark in portable hygrometry for measuring absolute humidities down to one part per million and below.

Built to the exacting demands stipulated by SHAW, the robust and easy to use Model SADP Dewpoint Hygrometer has, at its heart, the world renown SHAW High Capacitance Sensor with the unique Automatic Calibration feature (see overleaf).

Designed to operate at atmospheric pressure, the instrument is available in a variety of sensor ranges, covering an overall range of -110°C to +20°C dewpoint.

 

Shaw Gold Filter High Capacitance Moisture Sensors with 20 year life
Purple Spot	-100/0 degrees c. dew point. 0/6000 p.p.m.
Silver Spot	-120/-20 degrees. c. dew point.
Red Spot DP	-80/-20 degrees c. dew point. For SADPR
Red Spot Auto	-80/-20 degrees c. dew point.
Grey Spot	-80/0 degrees c. dew point .

Analogue versions of the SHAW Automatic Dewpoint Meter offer the 0-10ppm(v) range expanded over the full scale, which is selected by means of a rotary switch on the front panel. This allows for accurate measurements below 10ppm(v).

Digital versions of Model SADP can be configured to display dewpoint in either °C or °F on a large, easy to read, 41/2  digit LCD display.

The SHAW Automatic Dewpoint Meter is fully self-contained and is also certified as intrinsically safe for use in hazardous areas, without the need for any additional accessories such as zener barriers etc.

The unit is supplied ready for use with batteries installed and a calibration certificate traceable to National and international standards. Standard accessories supplied with the unit include a specially designed carrying case with shoulder strap, operational tools, 2m PTFE sampling hose and a pressure dewpoint calculator.

 

Dewpoint Sensor
Sensing Element	Shaw Ultra High Capacitance – Aluminium Oxide Sensor
Ranges	Purple (P): -100 to 0 °C dewpoint, 0 – 6000 ppm(v) Silver (S): -100 to -20 °C dewpoint, 0 – 1000 ppm(v) Grey (G): -80 to 0 °C dewpoint, 0 – 6000 ppm(v) Red (R): -80 to -20 °C dewpoint, 0 – 1000 ppm(v) Blue (Bl): -80 to +20 °C dewpoint, 0 – 23,000 ppm(v)
AutoCal	Field calibration/span check facility. Activated and operated via potentiometer on the front of the instrument
Factory Calibration	Supplied with Certificate of Calibration traceable to National Physics Laboratory (NPL)
Accuracy	± 3 °C/ ± 4 °C (± 5.4 °F/ ± 7.2 °F) dewpoint NPL traceable -90 °C to +20 °C (-130 °F to +68 °F)
Response Times	Wet to dry: -20 °C to -60 °C – less than 120 secs Dry to wet: -100 °C to -20 °C – less than 20 secs
Sample Flow Rate	Flow independent but ideally 2 to 5 litres per minute Max: 25 litres/min
Calibration Warranty	12 months from date of dispatch
Electrical
Electromagnetic Compatibility (EMC)	Immunity: complies with EN 61000-6-1:2001 Emissions: complies with EN 61000-6-3:2000
Display	Analogue: 120 mm Taut Band indicating meter showing dewpoint and ppm with amplified range of 0 – 10 ppm on TR versions.
Warm Up Time	5 seconds
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	Overall dimensions: 200 mm x 225 mm x 278 mm High (328 mm with head extended)
Weight	4.5 kg
Operating Pressure	Atmospheric to 0.5 barg
Operating Humidity (External)	Maximum – 95% RH non-condensing
Operating Temperature	-20 °C to +60 °C (-4°F to +140 °F)
Storage Temperature	-20 °C to +70 °C (-4°F to +158 °F)
Sensor Protection	316 sintered stainless steel filter – 50 micron
Weatherproof Classification	IP66/NEMA 4X
Mechanical Warranty	24 months in case of faulty workmanship and defective parts