Indoor Temperature Humidity Transmitter
Lefoo Indoor Temperature Humidity Sensor LFH20 LEFOO LFH20 temperature and humidity transmitter is a transmitter specially designed for indoor temperature and humidity detection, with small size, simple installation and easy operation. It has special design for lightning surge, electrostatic discharge, group pulse, withstand voltage, etc., and has strong anti-interference ability. There are three output modes of current, voltage and RS485 to choose from. It can be widely used in computer rooms, buildings, warehouses and other places that need to measure temperature and humidity. Range Measuring Temperature 0~50 ℃ Range Measuring Humidity 0 ~ 100 % Output : 4-20mA Accuracy : Digital sensor: ±0.3℃@20℃ Working Environment :-20~60℃, 5%-95%RH(non-condensing) IP30
Indoor Differential Pressure Transmitter
Lefoo Low Differential Pressure Transmitter LFM108 Low differential pressure transmitters and low cost pressure sensor controller of LEFOO pressure control have a wide application for air-conditioning/ventilation, duct static pressure measurement, filter and flap control, airflow control, cleanroom control, Lab/Fume hood control, airflow control, VAV and fan control, smoke hood control, furnace airflow control, oven pressurization, fluid, level monitoring, Isolation rooms monitoring, environmental protection, air blower, air cleaning or pneumatic feed lines. energy management systems. The low differential pressure transducer is ideal for the application of monitoring the vacuum pressure, a gauge pressure of air with differential pressure, such as natural gas, and especially low pressure of non-corrosive gases. General Value Pressure Range 0～±500Pa Accuracy ±1%F.S Operating temperature －20℃~70℃ Response time 0.5s/1s/2s/4s Cable Connector Cable maximum diameter Ø8mm Stability Typical value：0.1%F.S Maximum value:0.2%F.S Protection Level IP54 Electrical connections Three-wired Four-wired Five-wired Output signal 4~20mA Power supply 10~30 VDC Power consumption ≤1.5W Pressure interface Metal barbed interface,φ6.2mm Certification ROHS certification，CE certification Electromagnetic compatibility Electromagnetic radiation:EN50081-1/-2;Electromagnetic sensitivity:EN50082-2 Lightning protection