Differential Pressure Sensors

UK Supplier for DP Sensors

Our differential pressure sensor range is designed for precise monitoring and control in HVAC, BMS & BEMS environments. These sensors measure the difference in pressure between two points, ensuring accurate airflow management and system efficiency.

Whether you need air differential pressure sensors for cleanroom climate control or dp sensors for smoke ventilation, we provide solutions that integrate seamlessly with modern building management systems.

SETRA 267 DIFFERENTIAL PRESSURE SENSOR

SETRA 264 VERY LOW DIFFERENTIAL PRESSURE TRANSDUCER

SETRA MR1 & MR2 AIR DIFFERENTIAL PRESSURE TRANSMITTERS

SETRA 230 WET TO WET DP TRANSDUCER

KOBOLD PMP DIFFERENTIAL PRESSURE SENSOR

SETRA 231 MULTI SENSE PRESSURE TRANSDUCER

SETRA 231RS MULTI SENSE PRESSURE TRANSDUCER

SETRA 265 VERY LOW DIFFERENTIAL PRESSURE TRANSDUCER

SETRA 269 LOW DIFFERENTIAL PRESSURE TRANSDUCER

SETRA MRC MULTI RANGE CRITICAL PRESSURE TRANSDUCER

SETRA MRG MULTI RANGE GENERAL PRESSURE TRANSDUCER

How Differential Pressure Sensors Work

Differential pressure sensors are used to measure the difference in pressure between 2 points on in variety of applications. These sensors can provide accurate and reliable readings for real time monitoring of pressure to ensure maximised performance within a system.

Medias can include liquids, gases and steam. They can also be referred to as differential pressure transmitters and differential pressure transducers. Typically they are used as low pressure sensors for very small measurements. 

Our range of differential pressure sensors are known for their quality and reliability. Designed with premium capacitive sensing technology, our selection of Setra products offers single-range and multi-range (field selectable) pressure sensors. Capable of measuring both liquid and gases, we have the product to meet a breadth of HVAC applications and can be trusted in your most critical applications.

Sensors can be used to measure pressure of liquids and gases in pressurised tanks, data centres/server rooms, air handling units, across HEPA filters and more, to provide your business with the accurate information you need to run efficiently.

Our primary range of differential pressure transducers are designed with capacitive pressure sensor technology. These sensors have thin diaphragms located between two parallel metal plates. When external pressure is applied, the diaphragm flexes slightly, causing a change in the capacitance and therefore a change in the output of the sensor.

The sensor will send an electronic signal, which is then converted into a current or voltage output to indicate a change in pressure level.

Types of Sensors

We offer 3 star products in our DP sensor range: 

Setra 267 (aka PA-267)

• Industry-standard solution for DP measurement and monitoring.
• Optional LCD display, multiple pressure ranges, outputs and accuracies.
• The go-to choice for serious OEMs.

Setra MR1 & MR2

• Multi-range version of the 267 with LCD display and enclosure case as standard.
• Field-selectable pressure ranges and outputs.
• Multiple mounting configurations for flexibility.
• Ideal for consolidating part numbers and SKUs.

Setra 264

• Economical model without casing/housing.
• Ultimate low-cost solution for budget-sensitive projects.

Selection Criteria for Differential Pressure Sensors

• Pressure Type – identify what type of pressure needs to be measured, taking into consideration the maximum and minimum levels required to monitor.
   
• Accuracy of the sensor – Understand how sensitive the sensors needs to be to ensure the device is able to provide reliable and detailed monitoring.
   
• Surrounding environment – Can the sensors withhold humid, chemical exposure and/or extreme both high or freezing temperatures, as this may impact sensor accuracy.
   
• Temperature exposure – What temperature will the sensors be exposed to and how high or low will the sensor need to measure. Will the sensor remain accurate and stable regardless of the temperature?
   
• Output signal – what alert is required to signal a change in pressure, does the alert need to record data or sound an alarm only?
   
• Interchangeability – is the sensor compatible with current settings of the device? How quickly can the sensor be changed in the event of a sensor error? Consider the severity of the situation if the application is critical.

Our knowledgeable technical support team at Boiswood can support you in choosing the correct sensor to fulfil the needs of your application, ensuring efficiency & accuracy to support the high performance your business.

Applications and Industries

Our sensors are widely used in:

• HVAC systems for airflow and filter monitoring.
• Cleanrooms and isolation rooms for pressure control.
• Pharmaceutical and healthcare facilities for contamination prevention.
• Data centres for cooling efficiency.

Smoke Ventilation and Fire Safety

The Setra Model 267 is a trusted solution for smoke ventilation applications. It integrates effortlessly with existing BMS/BEM systems, enabling automated activation of fire doors and sprinkler systems during emergency events. Its robust design ensures reliability in demanding environments where safety is critical.

Deflections of a Diaphragm in Different Pressure Sensors

Watch our video and see how the sensing elements are working inside different types of pressure sensors:

We combine technical expertise with a comprehensive product range to help you select the right differential pressure sensor for your application. Our team supports you from specification through to integration, ensuring compliance and performance in every project.

FAQs