Pressure Transmitters and Transducers

Pressure transmitters, also called pressure transducers, are pressure measuring instruments that convert the pressure change into a proportional standard output signal. There are many different types of pressure transmitters but what MicroSensor offers and specializes in are the piezoresistive pressure transmitters. Pressure transmitters must give a long-term, consistent and stable performance, and high accuracy. Simultaneously, pressure transmitters need routine maintenance and calibration to guarantee optimal performance.

A selection of housing materials, pressure ports, and analog outputs meet the diverse needs of your industrial applications or customer's unique requirements. MicroSensor pressure transmitters acquired various international certifications, including CE, UL, CSA, ROHS, ATEX, IECEx, DNV, and so on.

Pressure Transmitters and Transducers

Digital Pressure Transmitters

Differential Pressure Transmitters

Pressure Transmitters and Transducers

As a pressure transducer manufacturer, MicroSensor provides a wide range of pressure transmitters and transducers for process control, marine, industrial gases, food and beverage, HVAC and telemetry, etc. The pressure transmitter ranges from 0.1bar to 1000bar, outputs 0.5V~2.5V DC / 0.5V~4.5V DC / 4mA~20mA DC, etc. Some pressure transmitters are certificated with ATEX explosion-proof, Exd as well as UL and are suitable for hazardous environment use. Custom design is available.
MPM489 ATEX pressure transmitter is an ideal solution for automation control applications that require precise measurement. MPM489 can use in harsh environments and hazardous areas.
M20 is highly cost-effective while achieving high reliability. It is suitable for various pressure monitoring and measurements in general industrial occasions.


Smart Gauge/Absolute Pressure Transmitter

Smart Gauge/Absolute Pressure Transmitter

[MDM7000-GP/AP]

MDM7000-GP Accuracy:±0.075%FS、±0.1%FS、±0.2%FS
MDM7000-AP Accuracy:±0.1%FS、±0.2%FS
MDM7000-GP Range:0.4bar ~400bar
MDM7000-AP Range:0.4bar~100bar
Long-term stability:±0.1%SPAN/5years
Maximum turndown ratio:100:1
DNV, ABS, KR, NK, and RS approved for installation on vessels

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ATEX Pressure Transmitter

ATEX Pressure Transmitter

[MPM489]

-1bar...0bar~0.1bar…1000bar
General / Flush Diaphragm
CE, RoHS, ATEX approved
DNV and ABS certifications for installation on the ship

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Low Range Pressure Transmitter

Low Range Pressure Transmitter

[MPM430]

5mBar~0.2Bar
4~20mA DC
Accuracy: ±0.5%FS

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Pressure Transmitter for Hydrogen Measurement

Pressure Transmitter for Hydrogen Measurement

[MPM480GH]

Hydrogen Service Gold Plated Diaphragm
Range:0.1Bar~70Bar
Output Signal:4~20mA 0/1~5/10V DC 0.5~4.5V DC 0.5~2.5V DC

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Traditional Mounted Gauge/Absolute Pressure Transmitter

Traditional Mounted Gauge/Absolute Pressure Transmitter

[MDM7000-DGP/DAP]

MDM7000-DGP Accuracy: ±0.075%,±0.1%,±0.2%URL
MDM7000-DAP Accuracy: ±0.1%、±0.2%URL
MDM7000-DGP Range:60mbar ~400bar
MDM7000-DAP Range: 0.4bar~100bar
Long-term stability: ±0.1%SPAN/5years
Maximum turndown ratio: 100:1
DNV, ABS, KR, NK, and RS approved for installation on vessels

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Silicon Microfused Pressure Transmitter

Silicon Microfused Pressure Transmitter

[MPM4511]

Heavy Duty & Shock Resistance
16Bar~1000Bar
Accuracy:±1%FS

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Pressure Transmitter Suitable For General Industry

Pressure Transmitter Suitable For General Industry

[M20]

Range: 0~250mbar to 0~250bar

Accuracy:±0.25%FS, ±0.5%FS
Output: 4mA~20mA DC, 0/1V~5/10V DC, 0.5V~4.5V DC

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Pressure Transmitter

Pressure Transmitter

[MPM4503]

Range:10Bar~50Bar
Compact Size & Shock Resistance
Accuracy:±1%FS

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Water Pressure Transmitter

Water Pressure Transmitter

[MPM4891]

0bar~0.1bar…400bar
Accuracy: ±0.5%FS
Embedded LED Display

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Analog Output Pressure Transmitter

Analog Output Pressure Transmitter

[MPM4891B]

0bar~0.1bar...400bar
Accuracy: ±0.5%FS
Output Signal: 4-20m ADC

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Pressure Transmitter

Pressure Transmitter

[MPM4150]

Range:0~1bar; 0~16bar; 0~35bar
Ceramic Element
Water Pump Application

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High Temperature Pressure Transmitter

High Temperature Pressure Transmitter

[MPM4530]

Range:0.1Bar~1000Bar
4~20mA DC
High Temperature 0~150℃ G31(General) Or Customized

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Fluid Pressure Transducer

Fluid Pressure Transducer

[MPM489B]

Range:-1bar...0~0.2bar…1000bar
Accuracy: 0.5%FS
Output: 4~20mADC, 2-wire

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Piezoresistive Pressure Transducer

Piezoresistive Pressure Transducer

[MPM380]

Range:-1bar...0~0.2bar…1000bar
Accuracy: ±0.25%FS (Typ.)
Power Supply: 1.5mADC

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Pressure Transmitter for General Industry

Pressure Transmitter for General Industry

[MPM4841A]

Range:0bar~0.35bar…200bar
Accuracy: ±0.5%FS
CE, RoHS

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Economical  Pressure Transmitter

Economical Pressure Transmitter

[MPM4841B]

Range:0bar~250bar…600bar
Accuracy: ±0.5%FS
CE, RoHS

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Digital Pressure Transmitters

Digital pressure transmitters output digital I2C, RS485, MODBUS, and HART signals for applications. MicroSensor offers low power consumption digital pressure transmitters with a 3.3V power supply. The pressure ranges from 0.07bar to 1000bar. Digital pressure transducers with high precision are suitable for tank monitoring, agriculture irrigation, hydropower plant applications, etc.
MPM3801GRF outputs Standard I²C or SPI protocols. It is a digital I2C pressure transmitter for volume correctors, flowmeter which has excellent corrosion resistance and long-term stability.
MPM486 with HART protocol, is available to manage, adjust or monitor the process variables by HART communicator or software, and with local LCD display. It can measure fluid pressure precisely.


LCD HART Pressure Transmitter

LCD HART Pressure Transmitter

[MPM486]

Range:0bar~0.1bar…1000bar
HART Protocol
LCD Indicator

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Pressure Transmitter

Pressure Transmitter

[MPM483E]

High-level electromagnetic compatibility
Support reverse polarity, transient overcurrent and over-voltage protection
LCD / LED display
CE approved

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Digital IIC Pressure Transmitter for Volume Corrector

Digital IIC Pressure Transmitter for Volume Corrector

[MPM3801GRF]

I²C or SPI protocol
Low power consumption: standby power consumption ≤ 5μA, average working current ≤ 2.5mA
Low-voltage power supply: 3.3V, 5V, battery-powered
Secondary temperature compensation, total accuracy up to ±0.25%FS
RoHS and Reach approved

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Digital Pressure Transmitter

Digital Pressure Transmitter

[MPM4736]

Low Power Consumption
Range:0.1Bar~1000Bar
Digital temperature compensation and non-linearity modulation

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Digital Pressure Transmitter

Digital Pressure Transmitter

[MPM3801A]

Range:0.07Bar~1000Bar
Accuracy: ± 0.25%FS
General use structure

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IIC Pressure Sensor

IIC Pressure Sensor

[MPM3801]

Range:0bar~0.07bar…1000bar
Accuracy: ±0.25%FS
Digital IIC output

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Digital RS485 HART Pressure Transmitter

Digital RS485 HART Pressure Transmitter

[MPM4730]

Range:-1bar...0~0.1bar…1000bar
Accuracy: ±0.15%FS (Typ.)
RS485/HART Protocol
DNV approved for ship use

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Intelligent Pressure Transmitter

Intelligent Pressure Transmitter

[MPM4780]

Range:-1bar...0~0.1bar…1000bar
Accuracy: ±0.5%FS
ModBus-RTU Protocol

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Intelligent Display Pressure Transmitter

Intelligent Display Pressure Transmitter

[MPM4760]

Range:0bar~1bar…1000bar
LCD Indicator
Battery Power Supply

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Differential Pressure Transmitters

MicroSensor differential pressure transmitter is for low range pressure measurement for air and gases. The low-pressure range can be 10 mbar, the best accuracy of the differential pressure transmitter can be ±0.075%FS. It can be widely used in the chemical, gas and oil filed.
MicroSensor offers MPM4901FL differential pressure sensor or transmitter for oxygen pressure measurement, specializing in gas pressure measurement in medical oxygen production equipment and oxygen storage tanks.
MDM7000 Series Smart Differential Pressure Transmitter supports remote setting, monitoring and other functions through communication equipment. It is necessary for controlling and optimizing energy use, and maintaining product quality.


Smart Differential Pressure Transmitter

Smart Differential Pressure Transmitter

[MDM7000DP]

Accuracy: ±0.075%,±0.05%,±0.1%URL
Range: 60mbar~100bar
Long-term stability: ±0.1%SPAN/5years
Maximum turndown ratio:100:1
DNV, ABS, KR, NK, and RS approved for installation on vessels

more info...
Smart Gauge/Absolute Pressure Transmitter

Smart Gauge/Absolute Pressure Transmitter

[MDM7000-GP/AP]

MDM7000-GP Accuracy:±0.075%FS、±0.1%FS、±0.2%FS
MDM7000-AP Accuracy:±0.1%FS、±0.2%FS
MDM7000-GP Range:0.4bar ~400bar
MDM7000-AP Range:0.4bar~100bar
Long-term stability:±0.1%SPAN/5years
Maximum turndown ratio:100:1
DNV, ABS, KR, NK, and RS approved for installation on vessels

more info...
Smart Level Transmitter

Smart Level Transmitter

[MDM7000LT]

Accuracy:±0.075%FS
Range: 0.4bar~30bar
Output Signal: 4mA~20mA DC+HART
Working Temperature: -10℃ ~85℃ , -10℃ ~70℃ (with LCD display)
DNV, ABS, KR, NK, and RS approved for installation on vessels

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Differential Pressure Transmitter

Differential Pressure Transmitter

[MDM490]

0bar~0.35bar...35bar
Accuracy: ±0.5%FS
4~20mA DC 0/1~5V DC 0~10/20mA DC

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Differential Pressure Transmitter

Differential Pressure Transmitter

[MDM390]

Output: mV
Accuracy: 0.25%FS
Max. static pressure 20MPa

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Differential Pressure Transmitter

Differential Pressure Transmitter

[MDM492]

0~0.01bar / 0~0.025bar / 0~0.07bar
Accuracy: ≤1%FS
Output: 4~20mADC(2-wire)

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Smart Differential Pressure  Transmitter With Remote Diaphragm Seal

Smart Differential Pressure Transmitter With Remote Diaphragm Seal

[MDM7000-LP]

Accuracy:±0.075%FS
Range: 0.4bar~30bar
Output Signal: 4mA~20mA, DC+HART
DNV, ABS, KR, NK, and RS approved for installation on vessels

more info...
Differential Pressure Transmitter for Oxygen Pressure Measurement

Differential Pressure Transmitter for Oxygen Pressure Measurement

[MDM4901FL]

0bar~0.35bar...35bar
Accuracy: ±0.5%FS
Oxygen DP Measurement

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Different Types of Pressure Measurement


There are different pressure types of pressure measurement based on the principle of operation: gauge pressure, absolute pressure, and differential pressure.


Gauge Pressure

It takes the atmospheric pressure as the reference point. Since the atmospheric pressure may vary according to different locations, a gauge pressure sensor is needed to ensure accurate pressure measurement. Generally, a gauge pressure sensor has a vented tube connecting atmosphere pressure as a reference point to measure the media pressure.


Absolute Pressure

It takes the perfect vacuum as the reference point. Absolute pressure measurement is commonly used in vacuum systems and applications where zero pressure is crucial. 

A formula shows the difference between gauge pressure and absolute pressure: Absolute pressure = gauge pressure + atmospheric pressure


• Differential Pressure

The pressure difference between two points or systems is known as differential pressure. A differential pressure transmitter is a specific differential pressure in that one pressure is always atmospheric. 



Main Components of Pressure Transmitter and Transducer


The pressure transmitter is also known as a pressure transducer in some areas. It is a device used to measure and transmit a signal proportional to the pressure applied. The structure of a pressure transmitter can vary depending on the application, but typically includes the following main components:


Sensing Element

This is the essential component for pressure measuring that converts the applied pressure into an electrical signal. 


Circuit Board Chip

Circuit board chips are divided into analog chips and signal conditioning chips. This component amplifies or processes the electrical signal into a transmittable, unified standard signal. It can be a 4-20 mA current loop, voltage output and digital outputs.


Housing

The sensing element and circuit board chip are enclosed in a housing to protect them from environmental factors like vibration, shock, and moisture. Housing with optional materials such as stainless steel 316L, SS 304, Hastelloy C, Tantalum, etc., according to the different working environments. 


Electrical Connection

These connectors link the transmitter to the power supply and other instrumentation in the control system. B1 4-pin Plug Connector, B2 Cable Connection, and other types are available. The choice of electrical connection depends on factors such as the current carrying capacity, voltage level, application requirements, and industry standards.


Process Connection

It involves the physical connection between the pressure transmitter and the process piping or equipment. There are several types of process connections commonly used in industrial applications, including thread connection, flanged connection, clamp connection, etc.

The choice of process connection depends on factors such as the process fluid, pressure, temperature, pipe size, and compatibility with the instrument. It is important to select the appropriate process connection to ensure accurate measurement, reliable operation, and safety.



Differences Between Digital and Analog Output of Pressure Transmitters


According to the characteristics of the output signal, the output mode of the pressure transmitter has analog output and digital output.


• Analog Pressure Transmitter

Common analog outputs include 4-20mA, 0-5V/10V DC, 0.5-4.5V DC, etc. In practical applications, users can more conveniently collect, process and restore analog signals.

In maintaining the output signal's consistency, the analog pressure transmitter is more convenient to replace and maintain on-site. Compared with digital output products, the system response speed of analog output products is faster. Therefore, in special working conditions with higher requirements on frequency response, analog output pressure transducers are more suitable.


• Digital Pressure Transmitter

Common digital outputs include RS485, I²C, HART, etc. Its system cost is lower when solving multi-point measurement applications. Compared with analog output products, the digital pressure transmitter is convenient for networking and conducive to online adjustment.

Among many digital products, RS485-Modbus is one of the most widely selected. The product has strong anti-interference ability and long transmission distance. I²C hardware is low-cost, fast, and has high data volume.


MicroSensor provides digital and analog output signal pressure transducers depending on your system compatibility, communication requirements, noise immunity, and the level of accuracy needed for the application. 



Common Communication Protocols for Pressure Transmitters


Commonly used pressure transmitter communication protocols include 4-20mA, MODBUS, HART, etc. These communication protocols enable data transmission between the transmitter and equipment and control systems. 


• 4-20mA Analog Signal

4-20mA converts pressure signals into current signals for transmission. 4mA represents zero pressure, and 20mA represents full pressure. By measuring the current signal output by the transmitter, the current pressure value can be determined. It is suitable for long-distance transmission, but lacks two-way communication capabilities.


• MODBUS

MODBUS is a serial communication protocol widely used in industrial automation. The pressure transmitter uses the MODBUS protocol to transmit a variety of data, including real-time pressure values, equipment status, alarm information, etc. This protocol has high flexibility and scalability and can be adapted to different control systems.


• HART

HART superimposes digital communication on top of the 4-20mA analog signal. It enables configuration and diagnostic capabilities remotely. The communication protocol is suitable for industrial applications where both analog and digital signals are needed.



Why is Industrial Pressure Measurement Important?


Pressure measurement benefits the following aspects in process industry:


• Safety: Pressure monitoring in industrial environments maintains safe operating conditions. Real-time data and pressure variations also allow for prompt responses to any abnormalities.


Efficiency: By monitoring pressure, equipment and systems are operating within the specified pressure ranges. This prevents unnecessary strain on machinery to optimize processes for maximum efficiency.


• Quality Control: Consistent pressure levels in manufacturing processes maintain stable production quality, reduce waste and enhance overall efficiency.


• Predictive Maintenance: Pressure transmitters assist in predicting potential equipment failures or issues, facilitating proactive maintenance to prevent costly downtimes.


• Compliance: Many industrial operations are subject to regulations regarding pressure levels. Pressure transmitters help in ensuring compliance with these standards.



Pressure Transmitters & Transducers Application 


• Oil & Gas

• Chemical Industry: petroleum, coal mine, Daily chemical industry

• Pulp and Paper

• Electricity

• New Energy: lithium battery, photovoltaic

• Food & Beverage Manufacturing

• Pharmaceuticals


If you are interested in MicroSensor industry solutions, details information can be found on the Solution page.



 

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Micro Sensor GmbH
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