Differential pressure transmitters


Differential pressure transmitters are devices used to measure the pressure difference between two reference points.

Working Principle

Differential pressure transmitters are designed to provide precise and reliable measurements, utilizing advanced electronic sensing techniques. They operate by measuring the input pressure from two distinct points and providing an output signal proportional to the detected pressure difference.


These devices find applications in a wide range of industrial settings, including fluid level monitoring in tanks, detection of air and gas flows, HVAC systems, as well as complex industrial control processes.

Design Thanks to their advanced capabilities, differential pressure transmitters can provide accurate measurements even in harsh environmental conditions or potentially corrosive environments.

Moreover, their compactness and ease of installation make them indispensable tools for monitoring and controlling industrial processes, enhancing operational efficiency and safety.

In conclusion, differential pressure transmitters are versatile and reliable instruments used in various industries to obtain precise measurements of pressure difference. Their cutting-edge design makes them essential for improving the performance and reliability of industrial processes.

Piezoresistive pressure transducer.
Output: 4-20 mA (2 wires)
Can be mounted in any position
Housing material: ABS

The Series MSX Magnesense® Differential Pressure Transmitter combines the stability and versatility of the original Series MS2 Magnesense® II transmitter for use in building control applications.
All pressure ranges can be configured in unidirectional or
bidirectional modes, providing a total of 32 ranges

Flip-lid provides easy access to the unit’s wiring.Tamper resistant cover for added security and protection. 0,5% ACCURACY

- High accuracy

- Installation-friendly enclosure

- Freely selectable range

- Output signal (0-10V or 4-20 mA)

Piezoresistive pressure transducer
Output: 4-20 mA
Can be mounted in any position
Version with LCD display

The series 616KD differential pressure transmitters with One-Touch technology. With a single button, ZERO and SPAN are calibrated correctly. Output signal: 4 ÷ 20 mA or 0-10 V

616KD-LR Series Differential Pressure Transmitters
Output signal: 4 ÷ 20 mA or unit with selectable range 0-10 and 0-5 volts.

Several fields available starting from 0-60 Pa
Output 4-20 mA + 2 SPDT relays
with LCD display

Several fields available starting from 0-30 Pa
Zero and span digitally adjustable using buttons
With LCD display 4-20 mA output

Ideal for HVAC (Heating, Ventilation and Air Conditioning), clean-room and flow measurement applications, the NP785 is an ultra low differential pressure transmitter for measuring very small over-pressure, underpressure and differential pressure in neutral, non-corrosive gaseous media. It provides a pressure proportional linear signal output with configurable measuring range via USB using the configuration software.
NP785 can operate bi-directionally, providing the ability to measure differential pressure ranges from vacuum to positive pressure. It is housed in a DIN rail mountable ABS/ PC enclosure and its nickel plated brass fittings accept pneumatic hoses with 4 or 6 mm internal diameter.
The analog output can be set to either 0-10 V or 4-20 mA while having an RS485 with Modbus RTU communication protocol. Designed for HVAC and industrial environment, the NP785 ensures temperature compensation for longterm stability and complies with EMC standards, providing robustness and reliability for a wide range of applications.

NEW differential pressure transmitters

Ranges from 100 to 300 mbar

Output: 4-20 mA (3 wires)
Overall accuracy: 1,0 %  FS

Differential pressure transmitter for air and non-combustible, compatible gases. Ranges up to 1 KPa Output signal: 4 ÷ 20 mA. Temperature limits: from -6.67 to 48.9 ° C.

Compact and low cost differential pressure transmitter. Quick and easy installation. Output: 4 ÷ 20 mA, 2 wires. Zero and Span adjustment: ± 1 mA, non-interactive.

From few Pascals up to 10 KPa Zero elevation and programmable filter.
Programmable linear or quadratic output. Analog output 4 ... 20mA + HART protocol.

Execution in IP 65 plastic case. Programmable linear or quadratic output. Output: 4 ... 20 mA + HART protocol. Programmable via HART protocol and with front keys on the instrument.

SMART industrial differential pressure transmitter. Output: 4-20 mA + HART. Programming of zero value, span, characteristics, damping, using front buttons on the display.

Several fields available starting from 0-60 Pa min
Zero and span digitally adjustable using buttons
Version with or without display.

The Series 629HLP Differential Pressure Transmitters are suitable for measuring over-pressure, under-pressure, and differential pressure in compatible gases and liquids with 1% accuracy.

  • IP66 or NEMA 4-Rated Enclosure
  • 10 Field Selectable Pressure Ranges and 5 Field Selectable Outputs
  • Ranges and Outputs Can Be Set Without Powering the Unit

Field Selectable Ranges and Outputs. Accuracy 0.25%
10 pressure ranges & 5 output options — all field selectable

Differential pressure controller that contains three different functions in a single instrument. Output signal: 4-20 mA, 900 Ohm max Contact type: 2 RELAYS SPDT