Stork Instruments - DEWRay - Portable Dewpoint Hygrometer

Stork Instruments /

Split Beam reflex CHILLED-MIRROR Hygrometers /

The DEWRay portable is a chilled-mirror Dewpoint Hygrometer based on fundamental principles giving high accuracy and log term stability.

The DEWRay is a precision dewpoint hygrometer which works on the proven fundamental optical dew-point measurement principle (see technology section for detail information). The DEWRay split beam reflex detection method is able to detect whether ice or super-cooled is present on the mirror and compensate accordingly. This feature, unique to STORK Instruments, avoids the possibility of measurement errors of up to 4°C dewpoint which is an inherent danger in competing cooled mirror instruments.

KEY FEATURES:

Proven chilled Mirror principle
Split beam reflex sensor
Super-cooled water compensation
Lithium-Ion battery for long term operation between charges
In-built data logger
Calibration traceable to international standards
AZOR Mirror self-cleaning fincion
Blue Graphic display

TECHNICAL SPECIFICATION

Measurement range:

-40°C to +20°C dewpoint
-40°F to +68°F dewpoint
125 to 23,000 ppm(v)
Accuracy: +/-0.2°C dewpoint
Outputs: 4-20mA, (0-20mA)
Power Supply: 90-150V AC, 12V DC
Operating pressure: 0-2,5 MPa
Flow rate: 0.1-0.5 l/min
Case material: Polypropelene

Measurement Units	°C, °F for dew point and temperature; % RH: gm^-3 g/kg^-1 aw; Δ (t-tdp)
Response Speed	1°C s^-1 + settling time (dew-point dependent)
Power Supply	90 to 264 V, 47/63 Hz. IEC Connection with integral filter

Mirror	Gold plated copper
Temperature Measurement	4 wire 100 Ω 1/3 DIN Class B Pt100
Sample Flow Rate	0.1 to 2 Nl/min
Ingress Protection	IP65 (NEMA 12) 2,5 MPa (25 Barg)

Resolution	0.1 for ºC, ºF and % RH, 0.01 for gm^-3 and g/kg^-1
Outputs	Analogue: Two channels 4-20 mA or 0-20 mA Digital: RS-232 (RS-485 optional) Alarm: Volt free contact, 2A @ 30VDC
Status LEDs	Power on, DCC and alarm status
Operating Temperature	0 to +40°C ambient

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