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Shaw SADP - Moisture Meter

Manufacturer:

A portable hygrometer for rapid moisture checks or continuous use on flowing gas or air.

Part Number: SADP

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Overview
Specifications

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.

SENSOR TYPE

SHAW Ultra High Capacitance Aluminium Oxide Type.

RANGE

Analogue - Seven different ranges encompassing an overall range from -110 °C to +20 °C dewpoint (-148 °F to +68 °F), with corresponding range in ppm(v). Certain models come standard with expanded linear range 0-1 or 0-10ppm(v).

Digital - Seven different ranges encompassing an overall range from -110 °C to +20 °C dewpoint (-148 °F to +68 °F). Factory set to either °C or °F

DISPLAY

Analogue - 120mm, taut band, precision analogue indicator scaled linear in °C & °F and logarithmic ppm(v). Expanded range 0-10 ppm(v) scaled linear and selected by rotary switch on front panel. (Expanded range available as standard with ranges PL, SR, BL, GY, and RD)

Digital - 41/2 digit, LCD display. Factory set to read in either °C or °F

INTRINSIC SAFETY CERTIFICATION

Code: Ex ia IIC T3 / Ex ia IIC T4

Certificate No.: Sira 02ATEX2133X

AUTOMATIC CALIBRATION

Via potentiometer adjustment on front panel.

CALIBRATION ACCURACY

±2 °C dewpoint (dewpoint scale) & ±1ppm (0-10 ppm scale). All Automatic Dewpoint Meters supplied with Certificate of calibration, documenting factory calibration against known moisture levels traceable to National and International Standards.

REPEATABILITY

±0.5 °C dewpoint.

TYPICAL RESPONSE TIME

95% of reading within 20 seconds in normal operation.

POWER SUPPLY

9V DC - six "C" type disposable batteries (included).

BATTERY LIFE

In excess of 150 hours during continuous operation.

ELECTRONIC ACCURACY

Better than ±1% of range.

WARM UP TIME

Less than 5 seconds.

OPERATING CONDITIONS Temperature: -20 °C to +50 °C Humidity: 0-98% RH, Non-condensing

Storage: Temperature: -50 °C to +70 °C

Operating pressure: Atmospheric to 0.5 barg

ELECTROMAGNETIC COMPATIBILITY

Immunity: Complies with EN61000-6-1:2007

Emissions: Complies with EN61000-6-3:2007

FLOW RATE TO SENSOR

2 to 20 litres/minute.

CONNECTIONS

Two fir tree type on either side of desiccant chamber.

WARRANTY

Two years from date of delivery against faulty materials or workmanship.

ACCESSORIES INCLUDED

Anti-static carrying case, operational tools, 2m PTFE sampling hose and pressure dewpoint calculator