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Specification of Embedded Temperature and Humidity Transmitter LFH75

Technical parameter

Specification of Embedded Temperature and Humidity Transmitter LFH75
Relative Humidity
Sensor	Humidity Sensitive Capacitor
Range	0%~100%RH
Output	RS485/Modbus,0~10VDC,4~20mA,0~20mA
Accuracy	±2%@ 20℃ & 20~80%RH
Response Time	≤10s(20°C, slow flow air)
Temperature
Transducer	PT1000(class A)
Range	0-50°C,-20-60°C,etc.
Output	RS485/Modbus, 0~10VDC, 4~20mA, 0~20mA
Accuracy	±0.2℃@ 10°C-30℃ see chart for other ranges

Temperature Accuracy Curve

lfh75_Embedded_Temperature_And_Humidity_Transmitter_curve.jpg

Power supply: 16-35VDC or 24VAC ±20%.
Note: An isolation transformer is required when using AC power.
Output Load: ≥10KΩ (voltage type); ≤500Ω (current type).
Display Resolution: 0.01℃, 0.01% RH.
Housing Material: Base shell PC, panel stainless steel 304, probe stainless steel 304 probe.
Operating Environment: -20 to 60℃, 5%-95% RH(non-condensing).
Storage Environment: -20 to 60℃, 5%-95% RH.
Protection Level: Front panel: lP65 after installation; Probe: lP65 (stainless steel sintered and H₂O₂ filter); lP30 (metal U-groove filter)

LEFOO_LFH75_Embedded_Temperature_And_Humidity_Transmitter_02(1).jpg

LEFOO_LFH75_Embedded_Temperature_And_Humidity_Transmitter_02(2).jpg

Note:

1. Only when the output option is V10, A0, or A4, the temperature range 1-8 must be selected,otherwise,only0 can be selected.

2. Example LFH75-A42202 represents an embedded temperature and humidity transmitter with current output 4-20mA, temperature range -20-60℃, stainless steel sintered filter, and 2-meter cable length.

3. Prolonged exposure of the sensor probe to high temperature and humidity environments may cause humidity drift, which can be restored by placing it in a normal environment.