Low Differential Pressure Transmitter & Controller – Compact, Accurate &Low Cost
Versatile low-pressure sensor and controller designed for airflow, vacuum, and cleanroom applications. Ideal for HVAC, lab environments, fume hoods, and energy management systems.
Product Description
This low differential pressure transmitter and controller from LEFOO delivers precise, stable performance in low-pressure monitoring environments. Built for HVAC systems, cleanrooms, lab hoods, and air-handling equipment, it’s ideal for measuring vacuum, gauge, and differential air pressure in non-corrosive gas systems.
Compact, economical, and easy to integrate, the transmitter supports various pressure ranges and offers reliable output for use in fan control, duct static pressure regulation, filter monitoring, and airflow control systems. It’s also highly effective in environmental and energy management applications, such as isolation room monitoring, oven pressurization, and pneumatic feed lines.
Whether you're controlling ventilation in a VAV system or monitoring pressure changes in a laboratory or fume hood, this transmitter offers long-term accuracy and dependable signal transmission—making it a reliable solution for both industrial and commercial use.
Key Features:
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Accurate low differential pressure sensing for air and non-corrosive gases
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Ideal for HVAC, cleanroom, fume hood, and lab pressure monitoring
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Compact, lightweight, and cost-effective for system integration
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Supports applications such as duct static pressure, airflow control, and smoke hood systems
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Reliable in energy management systems and pneumatic environments
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Suitable for monitoring gauge, vacuum, and differential pressures
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Specifications
Air Differential Pressure Transmitter Note: Better accuracy performance than ±1%F.S is optional General Value Pressure Range 0~±100Pa, 0~±1,000Pa, 0~±10,000Pa Overpressure capacity 5KPa, 10KPa, 80KPa 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 0~5VDC/ 0~10VDC RS-485 RS485+ 0~10VDC Power supply 10~30 VDC 16~30 VDC 10~30VDC 16~30 VDC Power consumption ≤1.5W Pressure interface Metal barbed interface,φ6.2mm Communication RS-485 Standard interface, Modbus RTU protocol Certification ROHS certification,CE certification Electromagnetic compatibility Electromagnetic radiation:EN50081-1/-2;Electromagnetic sensitivity:EN50082-2 Lightning protection Air conduction withstand voltage 8000V, shell and cable conduction withstand voltage 4000V
Selection Guide
Selection instructions Note: This Model has the ideal price-performance rate Code and description
Remark
LFM108 Low Differential Pressure Transducer Model
101D
101D=0±100Pa
101G
101G=0-100Pa
Measuring range
G means one-way
D means two-way
102D
102D=0±1000Pa
102G
102G=0-1000Pa
251D
251D=0±250Pa
103G
103G=0-10000Pa
252D
252D=0±2500Pa
251G
251G=0-250Pa
051D
051DD=0±50Pa
252G
252G=0-2500Pa
501D
501D=0±500Pa
501G
501G=0-500Pa
502D
502D=0±5000Pa
502G
502G=0-5000Pa
103D
103D=0±10000Pa
AL
4~20mA
Output type
VL
0~10V
VZ
0~5V
MOD
RS485
MVL
RS485、0~10VDC
MVZ
RS485、0~5VDC
MAL
RS485、4~20mA
LFM108
102G
VZ
Selection example