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Pressure Transmitter for Pricise Pressure Measurement

Pressure transmitter T2800 consists of a high accurate oil-filled diffused silicon sensor and short-period overload pressure protection structure. Anti-clogging function. Pressure transmitters are used to measure the pressure or of industrial liquids and gases gas and liquid medium. Such as water, oil such as chemical aggressive fluids, such as non-explosive low-risk gas.  

 LEFOO is good at offering the most cost-effective solutions for customers who are in search of high-accuracy pressure measurement instruments. Install in minutes, calibration in second, purchase brand new pressure transmitter from LEFOO, instead of the extremely high cost of repairing and testing. LEFOO offers a warranty with manufacturer standard and good after-sales services, Solve your problems of daily measurement in precise pressure control.


*Imported oil-filled silicon core

*Anti-interference function

*0.1% accuracy optional

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Specification of Pressure Transmitter LFT2800

Pressure Transmitter LFT2800
Note: Packard, Hirschmann, M12 socket are common connections, individual connectors are optional
LEFOO Pressure Transmitter LFT2800

Measuring range

-100 KPa ... 0 ~ 10 KPa ... 60Mpa

Overload pressure

1.5 times full scale(Max.100Mpa)

Burst pressure

3.0 times full scale(Max.100Mpa)


±0.1%F.S, ±0.25%F.S, ±0.5%F.S,±1.0%F.S



Work Temperature


Storage Temperature


Medium compatibility

All corrosive medium compatible with 304/316 stainless steel











Power Supply






Electrical connection

DIN43650A(Big Hirschmann),M12 Waterproof outlet,M12 Aviation connector

Protection Level


Pressure Connections

G1/4、M12*1、M10*1、NPT1/4、G1/2、M20*1.5 etc.

Pressure form

Gauge pressure G   / Absolute pressure A


Safety explosion-proof type E, RoHS, EU electrical safety standards CE

Model Selection Table
Note: Optional oil-filled silicon/ceramic core, optional 0.1%F.S accuracy on oil-filled silicon

LEFOO Model Selection Table LFT2800

Code and Description



Pressure   Transducer




Measurement Range

RS      RS-485

A4 4~20ma

V05   0.5~4.5V

V0 0~5V

V10  0~10V

Output mode


K   = kpa


P   = psi



M   = Mpa


B   = bar


0.5   = 0.5%F.S



D1   = DIN43650A(Big   Hirschmann)

Electrical connection


M   = M12(M12   Aviation connector)


C   = Cable(Waterproof   outlet)


G1=   G1/4


G2   = G1/2

Pressure connection


N   = NPT1/4


M3   = M20*1.5


M1= M10*1


M2= M12*1


1.0   = 1m

Cable length


2.0   = 2m


3.0   = 3m









Model selection example

LEFOO is a pressure transmitter manufacturer expert for over 25 years

  • Adopt oil-filled diffusion silicon core 

  • High precision and high overload capacity 

  • Excellent corrosion and wear resistance

  • Strong resistance to electromagnetic interference

  • Multiple pressure ranges and RS485 signal output

The pressure transmitter LFT2000 uses a piezoresistive silicon sensor with a stainless steel isolation film as the signal measurement component. The zero-point and temperature compensation for wide temperature ranges is carried out by the laser trimming process. By using a low-power high-performance MCU, the pressure signal is collected and converted into a digital signal through RS485 output, which adopts the international standard Modbus protocol.  As a pressure transmitter manufacturer, LEFOO give out the best production management to offer customer reliable quality and optimal pressure transmitter price.

Application of Pressure Transmitter LFT2800 transducer

Match various data collection terminal equipment such as Frequency Converter, Signal Isolator, pressure control device, and PLC in applications as below.

Air compressors

Automation equipment

Ammonia detection equipment

Airtightness testing equipment

Building automation

Chemistry experiment equipment

Factory automation

Firefighting Equipment

Fire extinguishing gas tank

Gas alarm

Heating tube manufacturer

Hydraulic oil pressure detection

Injection pump

Low-speed unmanned vehicle brake control

Medical gas system

Medical supporting equipment

New energy technology and equipment manufacturing

Ozone detection equipment

pneumatic devices

Power energy equipment

Smart water valve

Vacuum pump

Urban drainage system monitoring

Water supply systems

Water treatment, processing

Watertank pressure measuring


More so than other industrial devices, pressure sensors/pressure transmitters/pressure transducers, are frequently used in conjunction with complementary instruments, like pressure switches, pressure gauges, and digital pressure controllers. with the addition of these devices, pressure transmitters increase instability with no margins of error generated from industrial energy instruments by magnetic chaos. They may also be equipped with electric contacts that sound alarms, turn on signal lights, or control a valve or pump. Two specific examples of accessories used to increase the functionality of gauges are test point adapters and gauge isolators. Test point adapters fit gauges and allow them to screw onto various points within the system, enabling a wide range of test pressure measurements without the purchase of multiple, separate gauges. Gauge isolators turn a pressure gauge into an “on/off” mechanism by mounting between a gauge and its circuit; unless a button is activated, the gauge will not be exposed to and will not read fluid pressure.

Many accessories for pressure transmitters have protective purposes. As sophisticated industrial instruments, pressure transmitters face a variety of threats such as pipe vibration, water condensation, etc. The aforementioned gauge isolator also serves a safety function by protecting a pressure transmitter’s internal mechanism from sudden pressure spikes. Snubber dampers provide a similar function by damping intense fluctuations in pressure. A variety of case protectors can be purchased to protect the exterior of a gauge from hard shocks, while chemical seals are available to protect pressure transmitters from being corroded or plugged up. While pressure gauges generally do not require a high level of maintenance, investing in protective accessories is one of the best things gauge users can do to protect and extend the life of a gauge.


When choosing a pressure transmitter for a specific application, several factors should be taken into account. Some of the major considerations include the size of the dial, the size of the connection or port the gauge will be used, units of measurement that the pressure transmitter is capable of (e.g. PSI, mmHg, PA, etc.), compatibility of gauge material with the operating conditions (including temperature, corrosiveness, etc.). and whether the gauge should be dry or liquid-filled (the latter tends to have longer life due to shock absorption).

One of the most important factors to consider is the pressure range. Generally speaking, you should use a pressure transmitter that is able to read at least twice the amount of the expected working pressure. This provides a reasonable margin of safety for using the pressure transmitter. As a rule of thumb, operating pressure should never go above three-quarters of a pressure transmitter’s reading range. A corollary of the rules of thumb involving pressure is the importance of choosing application-specific pressure gauges. Hydraulic systems, for example, should only utilize hydraulic gauges designed for operating under normal conditions in hydraulic environments.

For even greater accuracy – as well as greater speed, reliability, and durability – digital pressure transmitters should be used in place of pressure gauge devices (despite their cheap expense). Keep in mind, however, that the limitations of transmitter devices can often be overcome with the variety of accessories available for pressure transmitters. (For example, some temperature transmitters possess temperature compensation equipment and multiple calibrate circuit to enhance the accuracy of their readings.)

Since so many factors constitute proper pressure transmitter selection, investing in a quality pressure transmitter provider is one of the best choices that consumers can make. You should focus on finding a reputable provider that offers a broad array of pressure sensing/ control products and/or services (e.g. recalibration services.) Working with a quality supplier will ensure that you are able to maximize the usefulness and effectiveness of your pressure transmitter for your particular application.

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