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Super Dew SDG
Displays Any Moisture in Dry Air or Gas To The Shaw Sensor Page
Use as a monitor, indicator, alarm, or controller
 

There is much more to the Super-Dew first meets the eye.

The “Super Dew” can be connected by ordinary t/v cable, to a Shaw moisture sensor, from a remote site up to half a mile distant. Simple, compact and reliable, it is used world wide, for spot checks or continuous moisture indication in still or flowing air or gas. Two alarm or control settings are easily set by the user and provide instant alarms on the large LCD illuminated back lit dial and on the green and red signal lamps.

Model SDG has a practical dew point range of - 80 which is less than one part per million of water vapour up to saturation moisture levels in room air. The superb performance depends on the unique Shaw sensors, which have a built in accuracy and a linear response to dry dew point at room temperature. The Shaw modified molecular sieve moisture sensors as connected to the “Super Dew SDG. Have 100 times the dry capacitance of other moisture in very dry air or gas. They are gold plated with gold filters and 20 years life. The two years guarantee is an indication of the quality of these gems of the moisture sensor world which have the world’s largest moisture sensor sales. Subject to ISO 9002.

Please state either 240v 110v with order. 4.20 m/a. output. D.C 24 volts input available. Included is a table stand and panel mounting springs.

 
 
  • Fast, one second for 99% response, dry to wet.
  • Indication of ANY moisture.
  • User 5 second calibration check.
  • Economic Price.
  • Wet Alarm & Dry Alarm.
  • 20 years sensor life.
  • Large clear digital display with back light.
  • Two years guarantee on meter and sensor.
  • Quality Control ISO9002.
  • 4-20 m/a. output.
  • Supplied complete with free table stand for one more as required.
 
MLPR
 

Accuracy to one part per million moisture in dry air. One second response time dry to wet. No mains power problems or connecting wires when used for portable checks. Records from minutes to four years. Economy price. Five year life lithium internal cell.

Full screen display of moisture on Lap top or P.C Remote reading up to half mile if required. Instant moisture checks on materials, products or samples. Records moisture in glove boxes or sealed packages. Supremely versatile. Display of partial water vapour pressure, dew point, pascals, or milli-bars you select. Order a Moisture Log factory calibrated for your use.

Model MLPR
Range -80/0 degrees c. dew point for dry air or gas.
The range introduced by Shaw 50 years ago.

Model M40
0/40 milli-bars water vapour pressure for samples.
Checks moisture in freeze dried instant coffee in one second.
Also reads Dew points or Water activity.

Model P100
0/100 pascals water vapour pressure in dry air or gas,
compensates for different pressures, temperatures and altitudes. Most certainly, this is the world’s most procise comtemporary hygormeter.
 
Another World's first by Prof. Leonard Shaw
 
Sensor can be up to half a mileaway using standard t/v coax cable!
    
 
 
 
SSDIRG
Direct moisture sensor to factory computer

The new Shaw sensor connects directly to a factory computer, so there is no need for a hygormeter in dry air or gas.
Simply connect the two wire sensor lead to the computer and for accurate calibration, set 20 mA on the computer, that’s it
With the sensor in room air, Shaw Automatic Calibration has entered the range of -80 deg c which is less than 1 part per million of water vapour, to 00 deg c.

 
Type. SSDIRG In line 2 wire, 4/20 mA Dew point sensor.
Range. - 80 to 00 deg c dew point at room pressure.
Accuracy. Guaranteed better than 1 p.p.m. on dry or gas
Sensor type. Shaw Grey Spot. Calibration to 4/20 mA 20 years life, Gold Plated with fine gold filter, 2 years guarantee
Weather Proof Rating. IP65. Blue anodized finish.
Dimensions. 64mm diameter. 170mm overall length.
Weight. 370g. resolution 0.01mA
Twisted Pair Lead. 20 mA. Length up to 1 Km.
Connection. Lemo 2 pin connector.
Power Supply. 18/30 volt dc. Scada.DCS computer systems.
Sample Pressure. To 10 bars, but preferably 1 litre per minute flow to atmosphere to avoid errors due to pressure variation.
Output. Fully isolated from process computer, acts as current drain. 4-20 mA proportional to dew point, on 2 way power lead.
Order. Sensor type SSDIRG 

 
Technical Details
 
MODEL SDA
 

The model SDA is a compact instrument designed for wall or panel mounting. It features direct indication of air or gas moisture content indewpoint temperature and parts per million of water vapour, an analogue output signal and two separated alarm fuctions, (optional) each fully adjustable over the range of the sensor.

 
SPECIFICATION
 

Calibration: the unique SHAW Automatic Calibration systems enables the instrument and sensor to be calibrated-and subsequent calibration checks made when required- in less than one minute, by unskilled personnel without the need for any other equipment

Alarms: two separate alarms ( optional) single pole infinitely adjustable change over contacts rated at 3A. 240V.
Power: 100/120V. or 200/240V, at 50/60 Hz.
Indication: precision 9cm Taut band indicator,scaled in direct reading dewpoint temperature and vpm (parts per million by volume of water vapour).
Signal Lamps: Green of power, Red for alarm.
Connections: the coaxial cable connection to the sensor may be up to 1Km.along.
 
Automatic Dewpoint Meter Standard Model SADP
Dew point readings on flowing dry air or gas.
 

Easily portable, and ready for spot checks or continuous use, this battery powered hygormeter indicates both dew point temperatures and parts per million of water vapour on the large meter dial. Calibration is accurate for different gases as the reading is specific to water vapour. Certified intrinsically safe.

The self extending head allows up to a flow of 20 litres a minute for clearing the air supply pipe work without wetting the test chamber, Automatic Dry down ensures quick response from the sensor. Note the absence of knobs, calibrating, cooling, and servicing as required by some other methods. The heart of the meter is a Shaw molecular sieve moisture sensor with a gold internal filter and gold plated exterior, a jewel of a sensor in fact!

So simply to use-with an air flow. The head (test chamber) extends by blocking the outlet with a finger for a moment. One second response time from dry to wet (99%) accuracy is guaranteed to better than one part in a million of moisture in vey dry air or gas.

Easily checked with room air on a few seconds by means of the Shaw Automatic Calibration feature, flow rate has no effect. The standard model SADPG has a range from one part in a million of moisture to room air.

Each SADP hygrometer has three weeks of daily laboratory checks at Bradford, subject to stringent ISO9002 quality control an is traceable to NPL (Sira). Every meter is CE marked and is certified intrinsically safe to : LCIE Certificate : 82.6187 X BASEEFA STANDARD Ex IA IIC T6. Certificate: 73212. EECS: ATEX 09669 FM Report : JIOQGA3AX Class no: 3610. Test no:0024.