S500 Explosion-proof Temperature, Humidity and Noise Detector

S500 Explosion-proof Temperature, Humidity and Noise Detector (Temperature / Humidity / Noise Detector).

Operating voltage: 10~28V Power consumption: 27.8 mA @ 24v Transmitter circuit operating temperature: -20°C~+60°C, 0%RH~80%RH Output signal: RS485 modbus-rtu communication protocol UART or rs-485 communication parameters: 9600 N 81 Measurement range: 50dB~120dB Frequency weighting: A weighting Frequency response range: 20Hz~ 12.5khz Response time: fast mode: 500ms Slow mode: 1.5S Stability: less than 2% in service life Reference calibration points: 94dB and 114dB calibration, reference sound pressure 20uPa, frequency 1kHZ Noise accuracy: + 0.5db (in reference pitch, 94db@1khz) Dust cover influence: influence <0.5dB in the range of 50~ 115db Influence within other ranges within the range < 0.7db Working environment: air temperature: -40~+60°C Relative humidity: 25%~90% The static pressure: 65 kpa to 106 kpa