Accurate pressure measurement is key to ensuring efficient system operation in fields such as industrial automation, energy management, and environmental control. The LFM76 explosion-proof differential pressure transmitter (dual output) is a high-performance device designed to meet these requirements. With its precision, stable performance, and explosion-proof characteristics, LFM76 can perform well in various harsh environments.

1、 Product Features

1. High precision measurement: LFM76 adopts high-precision MEMS micro pressure core to ensure the accuracy and reliability of measurement results. Its accuracy reaches ± 1.0% FS, which can meet the needs of most high-precision applications.

2. Wide working temperature range: The working temperature range of this transmitter is -20 ℃ to 80 ℃, and the compensation temperature range is -10 ℃ to 60 ℃, suitable for pressure measurement under various environmental conditions.

3. Dual output signal: LFM76 supports 4-20mA and RS-485 dual output signals, making it convenient for users to choose the appropriate output mode according to their actual needs, enhancing the flexibility and compatibility of the device.

4. Explosion proof design: The LFM76 has passed the Ex db IIC T6 Gb explosion-proof certification and is suitable for use in flammable and explosive environments, ensuring safe use in hazardous areas.

5. IP65 protection level: The equipment casing has an IP65 protection level, which can effectively prevent dust and water from entering, ensuring long-term stable operation in harsh environments.

6. LCD digital display: The transmitter is equipped with an LCD digital display screen, which displays measurement data in real time, making it convenient for users to monitor and debug on site.

7. On site adjustable: LFM76 provides a zero point button and optional pressure range available on site, allowing users to make on-site adjustments as needed, simplifying the installation and maintenance process.

2、 Technical parameters

-Measurement medium: air or neutral gas

-Range: ± 100Pa to ± 10000Pa (customizable)

-Allowable overvoltage: 10KPa; 80KPa（LFM76-3）

-Response time: 0.5s (default)/1.0s/2s/4s

-Output signal: 4~20mA/0~10VDC/RS485

-Power supply: 12~30VDC/24VAC ± 20%

-Shell material: cast aluminum

-Communication interface: RS-485 standard interface, supporting Modbus RTU protocol

-Certification: ROHS certification, CE certification

3、 Application Fields

The LFM76 explosion-proof micro differential pressure transmitter is widely used in the following fields:

-Energy management system: Accurately measure and control pressure, optimize energy efficiency.

-Heating, Ventilation, and Air Conditioning (HVAC): Monitor and control air flow to ensure a comfortable indoor environment.

-VAV and fan control: Real time monitoring of wind pressure, adjustment of air volume, and improvement of system response speed.

-Environmental pollution control: Monitor and control the pressure of pollution sources to ensure environmental safety.

-Static pipeline and clean room pressure: Maintain stable pressure in the clean room and pipelines to prevent contamination.

-Smoke hood control: Ensure pressure balance inside the smoke hood to prevent harmful gas leakage.

-Oven pressurization and boiler ventilation control: Accurately control the pressure of the oven and boiler to improve production efficiency and safety.

4、 Installation and wiring

The installation and wiring process of LFM76 is simple and convenient. The device provides detailed installation steps and wiring diagrams to ensure that users can quickly complete the installation. When wiring, attention should be paid to using appropriate wire diameters (7mm ≤ D ≤ 12mm) and operated by qualified technicians to ensure safety and reliability.

5、 Selection instructions

LFM76 offers multiple ranges and output types for users to choose from, and users can customize according to their specific needs. For example, the LFM76-2A model has a range of ± 1000Pa and outputs 4-20mA and RS-485 dual outputs, making it suitable for applications that require high precision and multiple output signals.

The LFM76 explosion-proof differential pressure transmitter (dual output) has become an ideal choice in the fields of industrial automation and environmental control due to its high precision, stability, and explosion-proof characteristics. Whether it's energy management, HVAC, or environmental pollution control, LFM76 can provide reliable solutions to ensure the efficient operation and safety of the system. Choosing LFM76 means choosing a trustworthy partner.