Model BL798 Precision Humidity and Temperature Probe Range: 0…100%RH Accuracy @23℃ : ±1.0%RH (0…90%RH) ■ T63 response time: 20 seconds ■ Uncertainty: ±0.6%RH (<40%RH); ±1%RH (40…95%RH) Temperature Measurement ■ Sensor type: Pt100 RTD1/3 Class B IEC751 ■ Range: -40℃…+160℃ , -40℃…+180℃ (option) ■ Accuracy @23℃ : ±0.6℃ (<40%RH), ±1℃ (40…95%RH) ■ Calibration uncertainty: ±0.1℃ Operating Environment ■ Operating temperature of probe head: -40℃…+160℃ , -40℃…+180℃ (option) ■ Operating temperature of probe body: -40℃…+60℃ ■ Storage temperature: -40℃…+80℃ ■ Operating environment: Suitable for outdoor use ■ Measurement environment: For air, N2， H2，Ar, He, O2 ■ IP rating of probe body: IP66 Input and Output ■ Operating voltage: 18 to 28VDC ■ Current consumption: 10mA typical, 500m max ■ Digital Output: RS485, non-isolated ■ Protocols: Modbus RTU Other Specification ■ Connector: M12-pin A-coded male ■ Weight: 250g ■ Probe cable length: 2 meter ■ Probe material: 316L ■ Probe body material: 316L ■ Cable jacket material: FEP ■ ■ The BL798 is a rugged, accurate temperature and relative humidity probe. It measures relative humidity over the range of 0 to 100% RH and temperature over the range of -40°C to +160°C. Alternatively, the range can expanded from -40°C to +180°C. RH accuracy up to 1.0%RH Temperature accuracy up to 0.6℃ Temperature measuring range -40…+180℃ Full 0…100%RH measure, +80℃ measure Modbus RTU over RS-485 Easy Installation and connection Sensor purge improves long-term stability and chemical resistance Chemical purge function (option) Industrial applications where periodic recalibration alone is not sufficient for maintaining the probe performance. Industrial HVAC systems, cleanrooms, and environmental chambers.HVAC Systems Humidity & temperature probe w/ 2m cable Analog part OPTIONAL ACCESSORIES AND SERVICCE ■ ■ ■ Relative Humidity Measurement ■ Sensor type: Thin film capacity Balun Technology Co., Ltd Add: 1322, F/3, Bldg 1, 33 Zique Rd, Haidian, Beijing100095, China ISO17025 accredited calibration certificate (SN: 9000-7330) BL7330 temperature & humidity transmitter (SN: BL7330) Chemical purge function (SN: 798-CP)