Low Pressure Capsule Gauges for Sensitive Pressure Measurement
Low pressure capsule gauges are specially designed for applications requiring accurate measurement of very low gas or air pressures where conventional Bourdon tube pressure gauges may lack the required sensitivity or resolution. Using a capsule sensing element rather than a standard Bourdon tube mechanism, these gauges provide stable and dependable low-pressure indication across industrial, HVAC, laboratory and process applications. For a more detailed comparison, read our guide to capsule vs Bourdon tube gauges for low pressure measurement, including how the two sensing mechanisms differ and when each is best suited to low-pressure applications.
This collection includes low pressure capsule gauges suitable for monitoring air, dry gases, vacuum and compatible non-corrosive media across a wide range of industrial systems. Common applications include ventilation systems, duct pressure monitoring, combustion systems, filter monitoring, cleanroom systems, laboratory equipment and low-pressure process control installations.
Capsule pressure gauges utilise a highly sensitive bellows-style capsule element designed specifically for low-pressure operation. This construction enables accurate measurement of pressure and vacuum levels within millibar and low-pressure ranges that would be difficult to monitor reliably using standard industrial pressure gauges.
Low pressure capsule gauges are commonly used within HVAC and ventilation systems for monitoring airflow pressures, duct pressures and filter condition. As filters become blocked or contaminated, pressure drop changes can be identified using sensitive low-pressure instrumentation, helping support preventative maintenance and system efficiency.
Industrial capsule gauges are also widely used on burner systems, gas supply systems, laboratory equipment and environmental monitoring applications where stable low-pressure indication is important. Many models are suitable for both positive pressure and vacuum measurement depending on the selected pressure range.
This collection includes capsule gauges in multiple dial sizes including 63mm, 80mm and 100mm variants to suit different installation and visibility requirements. Bottom entry, back entry, panel mounting and surface mounting configurations are available across the range to support compatibility with OEM equipment, plant installations and replacement applications.
Most low pressure capsule gauges are designed for use with dry, non-corrosive gases and air systems. Brass internals and steel case designs are commonly used for standard industrial duties, while stainless steel capsule gauges may be available for harsher environments or specialist applications.
Many gauges within the range can also be supplied with optional traceable calibration certificates where documented verification or maintenance traceability is required. Regular calibration helps maintain accuracy within quality-controlled and process-critical systems.
Whether used for HVAC monitoring, cleanroom pressure control, filtration systems or industrial gas applications, selecting the correct low pressure capsule gauge helps improve measurement sensitivity, operational monitoring and system reliability.
