Pressure Loggers Transducers & Transmitters

Comprehensive range of gas pressure monitoring equipment, featuring high-quality data loggers and sensors designed for precise measurement of gauge pressure and differential pressure across various applications.

Our selection includes advanced instruments from trusted brands like Gems, Dickson and Veris, offering robust solutions for industrial processes, HVAC systems, and environmental monitoring. Whether you require compact loggers for confined spaces, WiFi-enabled devices for remote monitoring, or high-specification transmitters for demanding environments, our range caters to diverse needs.

Reliable instruments from low-pressure differential sensors to high-pressure transmitters capable of measuring up to 1000 bar; we provide the tools necessary for comprehensive pressure monitoring in any setting.

See also, our range of handheld pressure meters.

To understand pressure measurement tools, it helps to look at how they are defined and used in practice. The terms pressure sensor, pressure transducer and pressure transmitter are sometimes used interchangeably, but there are important technical differences between them.

A pressure sensor is the broadest term for a device that measures pressure. Pressure sensors can include mechanical gauges, such as a Bourdon tube dial, pressure switches and electronic pressure-measuring devices. In general, pressure transducers and pressure transmitters can both be considered types of pressure sensor.

A pressure transducer is an electromechanical device that converts pressure into an electrical signal proportional to the measured pressure. Depending on its design, a pressure transducer may provide a low-level analogue output such as millivolts or mV/V, or a voltage output such as 0–5 V.

A typical pressure transducer incorporates a sensing element, such as a strain gauge or piezoresistive element, which responds to changes in pressure. The resulting electrical signal can then be measured by suitable instrumentation or signal-conditioning equipment.

A pressure transmitter is a pressure measurement device that incorporates additional electronics to condition the sensor signal. A transmitter typically amplifies, linearises and compensates the signal before providing a standard industrial output such as 4–20 mA or 0–10 V.

These standardised outputs are particularly useful for connecting pressure measurement devices to control systems, monitoring equipment and other instrumentation, especially where signals need to be transmitted over longer cable distances or in electrically noisy environments.

The main difference is the scope of the terms. Pressure sensor is a broad term covering devices used to detect or measure pressure, whereas a pressure transducer is a specific type of pressure sensor that converts pressure into an electrical output.

A mechanical pressure gauge, for example, can indicate pressure using a physical needle without producing an electrical signal. An electronic pressure transducer, by contrast, produces an electrical signal that varies according to the pressure being measured.

The key difference is generally the way the electrical signal is processed and output. A pressure transducer typically provides a relatively low-level analogue signal, such as millivolts, mV/V or a low voltage output. A pressure transmitter normally includes additional signal-conditioning electronics and provides a standardised output such as 4–20 mA or 0–10 V.

However, terminology varies between manufacturers and industries. Some manufacturers use the terms pressure transducer and pressure transmitter interchangeably, particularly where modern electronic pressure devices incorporate signal conditioning as part of the overall assembly. When selecting a device, the specified output signal and technical specification are therefore more important than the terminology alone.

A pressure transducer can provide different types of electrical output depending on its design. Common outputs include low-level millivolt or mV/V signals and analogue voltage outputs such as 0–5 V. Some devices described by manufacturers as transducers may also provide other conditioned outputs, so the manufacturer's specification should always be checked before selecting a device.

A pressure transmitter commonly provides a standardised industrial output such as 4–20 mA or 0–10 V. These outputs are designed to provide a robust signal that can be readily integrated with industrial control, monitoring and measurement systems.

Understanding the terminology helps engineers and technicians select the correct pressure measurement device for their application. When choosing between a pressure sensor, pressure transducer or pressure transmitter, consider the required pressure range, measurement type, accuracy, electrical output, process connection and compatibility with the receiving instrumentation.

All pressure transducers and pressure transmitters can be considered pressure sensors, but the terms describe different aspects of pressure measurement. A pressure sensor is the broad category, a pressure transducer converts pressure into an electrical signal, and a pressure transmitter generally adds signal conditioning to provide a standardised output such as 4–20 mA or 0–10 V.

Understanding these distinctions helps engineers choose the right device for accurate pressure measurement and monitoring.

Not sure which pressure sensor is right for your application?

Call our friendly team on +44 (0)1243 558270, click on the webchat box below, or fill out our contact form.

To understand pressure measurement tools, it helps to look at how they are defined and used in practice.

• Pressure Sensor: An overarching term for any device that measures pressure. This includes mechanical gauges (like a Bourdon tube dial), pressure switches and electronic sensors. In industry, “pressure sensor” is a general category — all transducers and transmitters are pressure sensors, but not all sensors are transducers or transmitters.
• Pressure Transducer: An electromechanical device that converts a sensed pressure into an analogue electrical signal, typically a low-level voltage (often in millivolts or a proportional 0–5 V signal). Transducers do not amplify or fully condition the signal; they simply translate pressure into a raw electrical output (for example, a strain gauge element producing mV/V).
• Pressure Transmitter: A device that builds on a transducer by adding electronics to amplify, linearize and compensate the signal. A transmitter takes the transducer’s output and converts it into a standard industrial signal (commonly 4–20 mA current or 0–10 V voltage). This conditioned output can be transmitted over long distances with less noise and without external amplifiers.

• Scope: “Sensor” is the broad category encompassing all pressure-measuring devices. A transducer is a specific type of sensor whose main job is to output an electrical signal (voltage or millivolts) proportional to pressure. A transmitter refers to a (usually larger) unit that includes a transducer plus onboard signal processing electronics.
• Signal Output: A purely mechanical pressure gauge produces no electrical output — it simply moves a needle. In contrast, a pressure transducer always generates a raw electronic signal (e.g. millivolt or low-voltage output) when pressure changes. A pressure transmitter outputs a higher-level, standardized signal (for example 4–20 mA) that directly interfaces with control systems.
• Signal Processing: Standard transducers output a relatively low-level signal without advanced processing. This signal often requires an external amplifier or conditioner for long cable runs or digital reading. Transmitters, however, have built-in circuitry to amplify, linearize and compensate the transducer output. As a result, transmitters provide a stronger, more robust signal over long distances and in electrically noisy environments.

All pressure transducers and transmitters are sensors, but the key differences lie in their outputs and conditioning. Transducers simply convert pressure to a raw electrical signal, while transmitters add electronics to deliver a calibrated output (e.g. 4–20 mA) suitable for remote monitoring.

Understanding these distinctions helps engineers choose the right device for accurate pressure monitoring and data logging.

Not sure which pressure sensor is right for your application?

Call our friendly team on +44 (0)1243 558270, click on the webchat box below, or fill out our contact form.