Lefoo 2000 - 2025
Lefoo 2000 - 2025
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LFM55
Embedded Differential Pressure Transmitter

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LFM55 Differential Pressure Transmitter is widely used in differential pressure detection of air or neutral gas. The product installation takes up small space, and can be embedded in system surface or installed inside switch box. The product panel is made of 316L stainless steel. The surface is smooth and dust-free and has strong corrosion resistance, which meets clean room standard. Customers can setup measurement range, communication address and other functions on site. The product has sound and light alarm function, and can set the alarm pressure point, alarm delay time, and alarm function on/off on site. The product adopts imported micro-pressure sensing element with temperature compensation, and has the characteristics of sensitive pressure response, long term output stability, and excellent temperature performance. The products can be widely used in clean rooms, operating rooms, dust-free laboratories, also suitable for HVAC, intelligent buildings and other applications.

  • Embedded installation, suitable for switch box

  • Sound and light alarm, range, and alarm, on sitesetting

  • Large-size LCD digital display, easy to operate

  • 316L stainless steel panel has no dust andcorrosion resistance

  • Imported micro-pressure sensing element, pressure sensitive

SPECIFICATION
Dimension

SPECIFICATION

MediumDry air and neutral gases
Pressure range±100Pa, Field configurable range
DisplayBacklit LCD display, display screen size 45×30 mm
Display resolution0.1Pa
Overload pressure7Kpa
Accuracy±1Pa
Operating temperature-20℃~70℃
Compensation temperature-10℃~60℃
Storage temperature-40℃~80℃
Protection gradeIP30
Electrical connectionFour-wiredSix-wired
Output signal①RS4854~20mA/0~10VDC
Power supply9~30VDC/24VAC±20%12~30VDC/24VAC±20%
Pressure connectionφ6.5mm, quick fit
CommunicationRS-485 Standard interface, Modbus RTU protocol
Shell materialFireproof Plastic UL94 V0 & Stainless Steel Panel
CertificationROHS, CE
Weight (Approximate)225g

①When the product is powered by an AC power supply, it is recommended to use an isolated AC power supply.

Dimension

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