LFM55 embedded differential pressure transmitter is widely used for differential pressure detection of air or neutral gas. Users can customize the range, set the communication address and other functions according to the site; it has a sound and light alarm function, and can set the alarm pressure point, alarm delay time, and alarm function on/off on-site. The LFM55 differential pressure transmitter adopts an imported micro-pressure core, with built-in temperature compensation, and has the characteristics of sensitive pressure response, long-term stable output, and excellent temperature performance. The panel is made of 316L stainless steel material, with a smooth surface without dust accumulation and strong corrosion resistance, which meets the clean room standards. It can be widely used in clean rooms, operating rooms, and dust-free test rooms, and is also suitable for heating, ventilation, and air conditioning (HVAC), smart buildings, and other applications.
Features
* Embedded installation method, can be adapted to 86 boxes;
* With sound and light alarm, the range, alarm, etc. can be set on site;
* Large-size LCD digital display, simple operation;
* 316L stainless steel panel without dust accumulation and corrosion resistance;
* Adopt imported micro-pressure core, sensitive pressure response.
Transmitter
| Measuring Medium | Dry air and neutral gas | |
| Pressure Range | ±100Pa, field configurable range | |
| Display | Backlit LCD display, display area 45X30mm | |
| Resolution | 0.1Pa | |
| Allowable Overpressure | 7Kpa | |
| Accuracy | ±1Pa | |
| Operating Temperature | -20°C~70°C | |
| Compensation Temperature | -10℃~60℃ | |
| Storage Temperature | -40℃~80℃ | |
| Protection Level | IP30 | |
| Electrical Connection | Four-wired | Four-wired |
| Output Signal | RS485 | 4~20mA/0~10VDC current/voltage simultaneous output |
| Power Supply ® | 9~30VDC/24VAC+20% | 12~30VDC/24VAC+20% |
| Pressure Interface | φ6.5mm, fast straight-through | |
| Communication | RS485 marked interface, ModbusRTU protocol | |
| Housing | Fireproof plastic UL94 V0 & 316L stainless steel panel | |
| Certification Items | ROHS certification, EU CE certification | |
| Weight (approximate) | 225g | |



Embedded installation method, can be adapted to 86 boxes
With sound and light alarm, the range, alarm, etc. can be set on site
Large-size LCD digital display, simple operation
316L stainless steel panel without dust accumulation and corrosion resistance
Adopt imported micro-pressure core, sensitive pressure response
Clean rooms
Operating rooms
Dust-free test rooms
Heating, ventilation and air conditioning (HVAC)
Intelligent buildings
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