Model BL783 Precision Chilled Mirror Hygrometer SPECIFICATION ■ ■ ■ ■ ■ ■ ■ Chilled mirror hygrometry is a precise technique for determining the water vapor content is gases by directly measuring dew point or frost temperatures. Using this technique a metal mirror is cooled until it reaches a temperature at which a thin layer of condensation begins to form on it. The dew layer is detected optically, and the mirror is held at that temperature. The mirror temperature, measures with a PRT, is an accurate indicator of dew or frost point. Dew/frost point ranges -40℃ to +90℃ Accuracy of dew point is to ±0.15 ℃ Dynamic balance control for contamination Simultaneously measures dew point, temperature, relative humidity, absolute humidity, specific humidity, enthalpy, vapor pressure and volume ratio (ppmV). Real time data logging and display curve MAX value and MIN value are recorded AC or alternative DC power supply MODBUS RTU and USB communication 4 Inch touch screen External temperature sensor port Force frost function at low dew points Reference standard in calibration lab Inlet air measurement for engine testing Heating ventilation and air conditioning test Environment monitoring in clean room Humidity control for metallurgical processes Coating process monitoring in pharmacy Reference humidity instruments for climatic and environmental chambers Balun Technology Co., Ltd Add: 1322, F/3, Bldg 1, 33 Zique Rd, Haidian, Beijing100095, China DP/FP ranges: -40℃ to +90℃ , (0.55%~100%RH @20℃ ) DP/FP accuracy: ±0.15℃ (calibration: -15℃ to +20℃ ) DP/FP resolution: 0.01℃ DP/FP reproducibility error: ±0.05℃ Temperature range: -45℃ to +100℃ Temperature accuracy: ±0.05℃ (calibration: -10℃ ~60℃ ) Temperature resolution: 0.01℃ Temperature reproducibility error: ±0.05℃ Working environment: -20℃ to +60℃ , 10%RH to 90%RH, 101.325kPa (custom atm. is option) Mirror temperature measurement: 4 wire PT100 1/3B Depression: Two stages, 65℃ at 25℃ Probe material:SUS304 stainless steel Cable material: Polyurethane material with shielding layer Response time: Max cooling 0.8℃ /s, + 15s balance time Sampling airflow rate: 0.1~1NL/min (The volume of ventilation is inversely proportional to the dew point) Cooling type: Peltier cooling Output signal: Modbus RTU, USB Power:100-240VAC 35W or USB Type-C 5V/2A 10W Ingress protection grade:IP54 Dimension: 160mm (W) x 165mm (D) x 85mm (H) Weight: 4kg includes standard accessories BL783 Precision chilled mirror hygrometer Two Stage Chilled Mirror Dew point sensor Ambient temperature sensor 2 meters dew point sensor connection cable 2 meters temperature sensor connection cable USB2.0 into USB type-C cable Standard AC Power cord Carrying case OPTIONAL ACCESSORIES AND SERVICES ■