Sensor & Measurement of Pressure
How does pressure measurement work?
Pressure is a measure of the force applied to a surface by a fluid, liquid, or gas. Pressure is usually measured in units of force per unit of surface area. Many techniques have been developed to measure pressure measurement and vacuum. The most widely used device for pressure and vacuum measurement is the Bourdon Gauge which uses a mechanical construction that measures pressure as well as indicates it.
In physical science, pressure is measured in units of force per unit surface area ( P = F / A). The SI unit of pressure is the pascal (symbol: Pa) and is represented by the symbol p. A pascal is equal to the force of one Newton per square meter acting perpendicularly on a surface.
Available Pressure Sensor Models
A pressure is a force applied uniformly over a surface. It is measured in units of force per unit of area. There are three types of pressure: gauge pressure, absolute pressure, and fluid pressure.
- The fluid pressure measures the force per unit of a gas or liquid
- Pressure in absolute terms is the pressure in comparison with the zero pressure of empty space (vacuum).
- In gauge pressure, atmospheric pressure (surrounding air pressure) is compared to the pressure of the gauge.
As shown below, we offer a wide range of gauges:
Absolute Pressure Gauge
Atmospheric pressure varies with altitude and weather, making it impossible to obtain precise measurements unless a fixed (unchanged) reference point is established.
Bourdon Pressure Gauge
Designed to withstand measurement in aggressive environments. Suitable for process industries such as petrochemicals, energy, gas, food processing, and nuclear.
Bourdon Sensing Pressure Gauges
Developed for OEM applications in compressed gases, lubricating circuits, etc., Bourdon Sensing Pressure Gauges 40/50/63mm are available in 40mm, 50mm and 63mm.
Capsule Sensing Pressure Gauge
Low range with high accuracy, stainless steel internals, compact design, suitable for low pressure measurements. The sensing element consists of two stainless steel laser-welded diaphragms.
The diaphragm seal is a flexible membrane isolates the measuring instruments from the process medium and seals them. Through the seal fluid, the pressure exerted by the process fluid on the diaphragm is hydraulically transmitted to the pressure sensing element on the instrument side. This seal protects the pressure sensor from harmful and hazardous effects of the process fluid.
Diaphragm-sensing Pressure Gauges
These are typically used for low pressures, are available in dry cases or liquid filled cases, and are made with stainless steel internals.
Differential Pressure Gauge
It measures differential pressures between filters, strainers, columns, reactors, ID/FD fans, blowers, and for flow measurement. A set of stainless-steel bellows or two diaphragms enables direct reading of the actual differential pressure. Each port is capable of withstanding the full static pressure without damage.
Pharmaceutical, dairy, biotechnology, food, and beverage industries use hygiene gauges to measure pressure.
Indicating Low Range Pressure Gauge
Single or double contacts available, suitable for low pressure applications. The switch can be set externally, regardless of the range.
Indicating pressure Switch
Suitable for low pressure applications, combined indication and switch, single or double contacts available. Set the switch externally, within the range of the product.
This gauge is designed to measure the pressure of pulsating fluids in oil and cool industries, as well as solid particles suspended in standpipes of mud pumps. It can be used for any fluid. Its sturdy construction can withstand severe working conditions. The pressure ranges meet the oil industry’s requirements.
Master Pressure Gauges
Accuracy class, rugged construction, 1.2-fold over range capability for short duration. Supplied with carry case.
A variety of pressure accessories are available, including snubbers, pigtail syphons, U syphons, gauge savers, gauge adapters, swiveling adapters, and gauge unions.
Pressure Gauge with External Zero Adjustment
Pressure gauges and differential pressure gauges usually have a micrometre type pointer, which can only be adjusted after opening the bezel and glass, which is not practical for liquid filled gauges. You don’t have to drain and replace any liquid with this gauge with an external zero adjustment knob. Available in pressure gauges and differential pressure gauges.
Level and flow transmitters send pneumatic signals to receiver gauges.
Dial Thermometers – Skin Type – Gas Filled
Used to measure surface temperatures in process lines.
Solid Front Safety Pattern Pressure Gauges
All stainless steel construction, suitable for process industries such as chemical, petrochemical, energy, gas, food processing, nuclear, etc. In case of accidental tube rupture, the baffle wall immediately releases.
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Our expertise in temperature management and process control allows us to advise, design, repair, and fabricate for clients in a wide range of industries, applications, and capabilities.