BL789 Dew Point Chilled Mirror Hygrometer (-100℃ to 20℃ dp)

The chilled mirror dew point meter is a precisetechnique for determining the water vaporcontent is gases by directly measuring dewpoint or frost temperatures. Using thistechnique a metal mirror is cooled until itreaches a temperature at which a thin layer ofcondensation begins to form on it. The dewlayer is detected optically, and the mirror isheld at that temperature. The mirrortemperature, measures with a PRT, is anaccurate indicator of dew or frost point.

KEY FEATURE

• The dew point range is lower to -100℃

• ±0.1℃ dew point accuracy

• ±0.01℃ sensitivity and fast response

• Real time curve and data logging

• With multi-points calibration

• Dynamic contamination correction

• Manual Forced frost function

• Auto process the super cooled water

• Analog output: Optional

APPLICATION

• Standard reference for calibration

• Precision moisture measurements

• Monitoring dried air pipe at a production

• Moisture control at drying process

• Production process of lithium ion battery

• Measurement of gas with low dew point

• Reference in humidity calibration facilities

• Reference for RH sensor manufacturing

SPECIFICATION

• Dew point measure range: (-70/-85/-100 to +20) ℃ dp

• Dew point calibration range: (-60/-80/-90 to +20) ℃ dp

• Dew point accuracy: ±0.1℃

• Dew point resolution: 0.01℃

• Dew point sensitivity: ±0.01℃

• Dew point reproducibility: ±0.05℃

• Response: Stable measure at +15°C dp within 1 minute

• Flow range: 0-2 liter/minute

• Flow accuracy: <= ±0.25%FS

• Sample flow rate: 0.3 to 1 Nl/min (suggest 0.7 Nl/min)

• Sampling gas pressure: < 1.5MPa (15barg)

• Test gas: N2, H2, O2, CA, SF6, C2H4, C3H6, ...etc

• Cooling: 4 Stage Peltier, air compressor

• Display: 7 inch touch screen

• Digital output: RS232

• Gas in/out connector: 1/4 inch Swagelok tube

• Display units: ℃ dp, ℃, %RH, PPMv, L/min

• Power supply:100-240VAC

• Power consume: 60W

• Working condition: -20℃ to +50℃, < 95%RH

• Dimension: W750mm x D680mm x H400mm

• Weight: 12kg

SCOPE OF DELIVERY

• BL789 Chilled mirror hygrometer

• Standard AC Power cord

OPTIONAL

• ISO17025 calibration certificate (Part #: CAL-789)

• Dry gas generator (Part #: BL792)

• Dew Point Generator (Part #: BL793)

• Silent oil-free air compressor (buy locally)

• Integrated cabinet with pipes, calibration bench, manifold (Part #: 790-PACK )

ORDERING MODEL #

• BL789-60: ±0.1℃ accuracy from -60 ℃ to 20℃

• BL789-80: ±0.1℃ accuracy from -80 ℃ to 20℃

• BL789-90: ±0.1℃ accuracy from -90 ℃ to 20℃