DryCheck - Self-Contained Dew Point Instrument Datasheet

Dew-Point TransmittersDryCheckDryCheckSelf-Contained Dew Point InstrumentA simple and efficient, self-contained dew point hygrometer, with filtration andflow control, for measurement of dew point or moisture contentDew-Point TransmittersDryCheckFeaturesIntegrated instrument and sampling systemSimple installationWide measurement rangeDew point or moisture contentAnalogue output, display and dual alarmsIP65 enclosure Please note: The accuracy stated represents the typical variation between the instruments undertest and a calibrated and corrected reference.Please contact us for the latest version: DryCheck: Ref: DC-0908ApplicationsCompressed air dryersPlastic mouldingOzone generatorsMedical gasesPneumaticsBreathing airWelding gases... and many moreMichell Instruments Ltd48 Lancaster Way Business ParkEly, CambridgeshireCB6 3NW, United KingdomTel: +44 (0) 1353 658 000Fax: +44 (0) 1353 658 199 Email: info@michell.co.ukWeb: www.michell.comTechnical SpecificationsMeasurement range -100 to +20°C dew point3000 ppmv (ppmv output or non-standard dew point range must be specified at time of order)Accuracy ±2°C dew pointOperating temperature -5 to +50°C Storage temperature -40 to +75°COutput 4-20 mA maximum load resistance 500 ?Alarm 2 volt free contacts 3 A @ 240 VUser interface Front panel configuration of alarm pointsDisplay 20 mm red LEDPower supply 85 to 265 VAC, 50/60 HzIngress protection IP65Mains cable 2 m cable suppliedGas pressure 10 Barg max (high pressure option available)Sample flow rate 1-5 Litres / minFiltration 99.5 % removal of 0.3 micronGas connection Quick Connect fittings for 6 mm OD Teflon pipeTechnical SpecificationsFor full specification please see the Easidew Transmitter and Easidew Online datasheetsDryCheckSelf-Contained Dew Point InstrumentDimensionsDew-Point Transmitters Dew-Point Transmitterswww.michell.comDryCheckSelf-Contained Dew Point InstrumentBackgroundThe DryCheck system was designed by MichellInstruments in response to demands from customers foran economic instrument package with good accuracyand stability, inclusive of a comprehensive samplingsystem, which could be easily installed for use in anumber of dew point measurement applications.In air drying and many other applications a costeffective and reliable hygrometer that is quick andsimple to install is vital to ensure that dew pointmeasurement can be made at the point of use.Fast Response and AccurateMeasurementThe DryCheck utilises the Michell Instruments EasidewOnline to measure dew point in the range –100 to + 20°C dew point, or moisture content in the range 0-3000 ppm. This well proven instrument has at itsheart, Michell’s advanced Ceramic Moisture Sensor, providing accurate and stable measurement. The calibration data for each sensor is stored within thetransmitter’s flash memory. This allows Michell Instruments to offer the unique sensor exchangescheme, keeping calibration costs and downtime to anabsolute minimum.Simple InstallationAll components are housed in a rugged IP65 rated polycarbonate case. This can easily be wall mounted ata convenient point close to the gas sample.A clear cover protects the display and the sampleflowmeter. Gas connection (gas in and gas out) is provided using “quick connect” push-fittings suitable foruse with 6 mm OD Teflon tubing. Mains power input,and connection to the 4-20 mA analogue output, andthe two user programmable voltage free relay contactsare all easily accessible behind the lower panel. Integral Sampling SystemThe DryCheck sampling system includes a 0.3 micronparticulate filter element, a monolithic sampling block tohouse the Easidew Transmitter, and a valve and flowmeter for setting the sample flow. The filter elementis easily replaceable to ensure that the sensor is protected. All components are rated to 10 Barg and theDryCheck can be configured for measurement of dew point at either system, or atmospheric pressure.Display and OutputsThe DryCheck features an extremely clear 20 mm redLED display, which can be programmed to display dew point, in °C or °F and moisture content in ppmv. Theinstrument also provides a 4-20 mA output and 2 offalarm relays. All these features are easily configurable bythe user via the front panel of the display, makingDryCheck one of the most versatile instruments on themarket.Please note: Michell Instruments adopts a continuous developmentprogram which sometimes necessitates specification changes withoutnotice.© Michell Instruments 2008Easidew TX Easidew Online Cermet II Easidew SamplerRelated ProductsIP65 enclosureSimple gas connectionsFlow meterIntegrated instrument and sampling systemAnalogue output, display and two alarmsDew point or moisturecontent