Pressure instruments are used to measure, monitor, record, transmit or control pressure. There are several types of devices. Recorders are used to measure values or accumulate totals. Controllers are used to regulate positive or negative (vacuum) pressure. They receive sensor inputs, provide control functions, and output control signals. Complete pressure instruments are self-contained devices that provide an output such as a display. Analog meters use a simple visual indicator such as a needle. Digital displays present numeric or application-specific values. Cathode ray tubes (CRT), liquid crystal displays (LCD), and other multi-line displays are also available. Some pressure instruments are suitable for measuring the pressure of liquids or gases. Others are rated for hazardous duty. Import specifications to consider include working pressure range, accuracy, vacuum range, and operating temperature. Temperature outputs, temperature compensation, negative pressure outputs, alarm indicators, and transistor-transistor logic (TTL) switches are commonly available. |
Products & Services Related to Pressure Instruments
Analog Pressure Gauges
Analog pressure gauges are mechanical devices that include bellows, Bourdon tubes, capsule elements and diaphragm element gauges.
Pressure Gauges
Pressure gauges are used for a variety of industrial and application-specific pressure monitoring applications. Uses include visual monitoring of air and gas pressure for compressors, vacuum equipment, process lines and specialty tank applications such as medical gas cylinders and fire extinguishers.
Pressure Sensors
Pressure sensors include all sensors, transducers and elements that produce an electrical signal proportional to pressure or changes in pressure.
Pressure Switches
Pressure switches are actuated by a change in the pressure of a liquid or gas. They activate electromechanical or solid-state switches upon reaching a specific pressure level.
Pressure Transmitters
Pressure transmitters translate the low level output of a sensor or transducer to a higher level signal suitable for transmission to a site where it can be further processed. These devices include pressure sensors, transducers, elements, and instruments.
Vacuum Sensors
Vacuum sensors are devices for measuring vacuum or sub-atmospheric pressures.
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