The HD48/49 series temperature and humidity transmitter can measure temperature, relative humidity, and dew point. Depending on the specific model, it outputs 4-20mA or 0-10V linear analog signals or RS485 digital signals, which are transmitted to remote displays, recorders, control systems, or data processing units. Its sensitive component capacitance measures relative humidity, while NTC thermistor or PT100 measures temperature. The HD48/49 series temperature and humidity transmitters are mainly used in crowded places such as medicine, museums, clean rooms, ventilation ducts, restaurants, auditoriums, gyms, as well as industrial and livelihood sectors.
Technical Specifications
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Relative humidity
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sensor
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Capacitor 150pF
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range
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0…100%RH
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precision
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±1.5%RH(0…90%RH)/±2%RH(90-100%)
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repetitiveness
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0.4%RH
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temperature
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sensor
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NTC 10k Ω or PT100
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range
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-20~+80℃,-40~+150℃
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precision
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PT100 temperature sensor: ± 0.3 ℃ NTC temperature sensor: ± 0.3 ℃ (0-70 ℃); ±0.4℃(-20~0℃&70℃~80℃)
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repetitiveness
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0.05℃
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dew point
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sensor
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Parameters calculated based on relative humidity and temperature values
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range
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-20~+80℃ DP
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precision
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±1℃ DP(0~40℃,10…90%RH)
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±2℃ DP(0~40℃ and 90…98%RH, 5…10%RH)
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±3℃ DP(-20~0℃, 40℃~+80℃ and 90…98%RH, 0…10%RH)
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Not specified(0…5%RH)
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repetitiveness
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0.5℃ DP
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Analog or digital signal output
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T、RH、DP
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4... 20mA or 0... 10V, RS485 (varies depending on the specific model)
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General parameters
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power supply
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16…40VDC/24VAC±10%
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circuit connection
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Screw terminal board, PG9 cable clamp
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Electrical working temperature
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0~+60℃
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Probe operating temperature
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-20~+100 ℃, extension range: -40~+150 ℃
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Storage temperature
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-20~+80℃
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Protection level
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IP66
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Dimensional drawing:
-TV wall mounted temperature and humidity transmitter

-TOx Pipeline Temperature and Humidity Transmitter