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Diaphragm Pressure Transmitters

Diaphragm Pressure Transmitters

Diaphragm pressure transmitters are high-performance measuring devices developed especially for processes where standard pressure sensors may become clogged or fail to provide reliable measurements. Thanks to their flush diaphragm structure, product accumulation on the sensor surface is prevented, enabling reliable measurements in viscous, dense, crystallizing, or particle-containing fluids.

Widely used in the food and beverage, chemical, pharmaceutical, cosmetic, paint, sludge, wastewater, and process industries, diaphragm pressure transmitters provide reliable process control with their high accuracy, long lifespan, and maintenance-free design.

Aktif Instruments diaphragm pressure transmitters are designed for demanding industrial applications with various output options such as 4-20 mA , 0-10 V , and HART , wide measurement ranges, stainless steel housing, and high temperature resistance.

Flush diaphragm pressure transmitters within this category integrate seamlessly into automation systems thanks to their hygienic process connections, high-precision sensor technology, and robust mechanical durability. Fully compatible with PLC, SCADA, and DCS systems, these products enhance process safety while reducing operating costs.

Flush Diaphragm Pressure Transmitter
Aktif Instruments
Flush Diaphragm Pressure Transmitter
Connection: R1/2” - Measurement range: -1 ...100 bar - Accuracy: 0.5% - Output: 4-20mA
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What is a diaphragm pressure transmitter?

A diaphragm pressure transmitter is an industrial measuring device that senses pressure within a process using a flush diaphragm surface and converts it into an electrical output signal. Unlike conventional pressure transmitters, the diaphragm surface is flush with the process connection, preventing product accumulation and maintaining measurement accuracy.

This structure enables reliable measurements in paste-like, sticky, crystalline, or fibrous fluids.

Advantages of Diaphragm Pressure Transmitters

  • The flush diaphragm design prevents product accumulation.
  • It provides high accuracy in viscous and dense fluids.
  • It complies with hygienic processes.
  • Its stainless steel body ensures long-lasting use.
  • It is resistant to high temperatures and harsh process conditions.
  • It provides easy integration with PLC, SCADA and automation systems.
  • It reduces maintenance needs, thereby lowering operating costs.

Areas of Application

Diaphragm pressure transmitters are reliably used in many industries.

  • Food and beverage production facilities
  • Milk and dairy product processing
  • Pharmaceutical industry
  • Chemical and petrochemical plants
  • Cosmetics production
  • Paint and resin production
  • Paper industry
  • Sludge and wastewater treatment systems
  • Sugar and starch production
  • Adhesive and viscous liquid processes

What should be considered when choosing a diaphragm pressure transmitter?

Choosing the right product is crucial for process safety. The following criteria should be considered when making a selection:

  • Measurement range (bar)
  • Chemical composition of the fluid
  • Operating temperature
  • Pressure connection type
  • Diaphragm material
  • Output signal (4-20 mA, 0-10 V, HART)
  • Protection class (IP)
  • Ex-proof requirement

Why Aktif Instruments?

At Aktif Instruments, we offer high-quality diaphragm pressure transmitters tailored to the needs of various industries. Our products provide maximum efficiency in industrial processes with their high accuracy, long service life, reliable performance, and international quality standards.

Thanks to our technical support, accurate product selection, and after-sales services, we offer the most suitable solutions for your projects.

Frequently Asked Questions

What is the difference between a diaphragm pressure transmitter and a standard pressure transmitter?

In diaphragm models, product accumulation does not occur because the sensor surface is flush with the process connection. This allows for much more accurate measurements in dense and viscous fluids.

In which sectors is it used?

It is widely preferred in all processes requiring hygiene, including food, pharmaceuticals, chemicals, cosmetics, paints, water treatment, and petrochemicals.

What are the output signals?

Depending on the model, 4-20 mA, 0-10 V and HART communication options are offered.

Can diaphragm pressure transmitters be used at high temperatures?

Yes. When the appropriate model is selected, it can operate safely in high-temperature processes and provide stable performance for a long time.

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