Pressure Measurement | McMaster-Carr

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System of Measurement

Pipe Size

For Use With

Hydraulic Fluid (Petroleum Based)

Maximum Pressure

Less than 1,000 psi

1,000 psi to 1,999.9 psi

2,000 psi to 9,999.9 psi

10,000 psi to 19,999.9 psi

20,000 psi or greater

Less than 10,000 kPa

10,000 kPa to 19,999 kPa

20,000 kPa to 29,999 kPa

30,000 kPa to 99,999 kPa

100,000 kPa or greater

Connection Location

Thread Type

UN/UNF (SAE Straight)

Measurement Unit

Centimeters of Mercury

Kilograms per Square Centimeter

Kilopascals

Megapascals

Millibars

Millimeters of Mercury

Ounces per Square Inch

Pounds per Square Inch

Standard Cubic Feet per Minute

Dial Diameter

Measures

Black Globe Temperature

Blood Pressure

Dew Point

Differential Pressure

Dial Type

Material

Scale Type

Display Type

Pressure Numeric Increments

Fitting Connection

Connection Material

Gender

Minimum Pressure

Graduations

Connects To

Maximum Continuous Pressure

REACH

RoHS

Compliant with Exemptions

Not Compliant

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

Export Control Classification Number (ECCN)

2B999

EAR99

DFARS Specialty Metals

Exempt

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5,799 Products

Most Likely Products

Pressure Transmitters

Send pressure readings to controllers and remote displays

365 products

Pressure Gauges

Measure pressure in pumps, filters, regulators, and process lines

290 products

Differential Pressure Sensors

Attach to gauges and switches to detect static pressure changes in air-handling equipment

5 products

Pressure Film

Measures pressing forces in equipment by creating an instant, permanent image of pressure variation

45 products

Paper Pressure Analyzers

Take lab-quality scans of pressure recording film for frequent onsite measurements

1 product

Differential Pressure Gauges

Display the difference in pressure between two points in your air and fluid systems

124 products

Pressure Test Fittings

Create a temporary connection point for gauges and other testing equipment

31 products

All Results

Fluid Handling

Pressure Transmitters

Send pressure readings to controllers and remote displays

365 products

Pressure Gauges

Measure pressure in pumps, filters, regulators, and process lines

290 products

Differential Pressure Sensors

Attach to gauges and switches to detect static pressure changes in air-handling equipment

5 products

Differential Pressure Gauges

Display the difference in pressure between two points in your air and fluid systems

124 products

Pressure and Vacuum Transmitters

Convert pressure and vacuum measurements into a signal sent to remote displays and controllers

98 products

Vacuum Transmitters

Transfer vacuum measurements to remote displays and controllers

17 products

Differential Pressure and Vacuum Gauges

Show changes in pressure and vacuum to monitor fans, blowers, and filters

20 products

Pressure Test Gauges

Check and calibrate pressure gauges, transmitters, and equipment to maintain accuracy

614 products

Vacuum Gauges

Take vacuum readings in pumps, packaging equipment, and suction lines

121 products

Pressure Indicators

Turn green when your compressed air line reaches a certain psi

3 products

Pressure and Vacuum Gauges

Measure pressure and vacuum in air and fluid lines, pumps, and refrigeration systems

242 products

Differential Pressure Transmitters

Relay pressure changes in heating, cooling, and pumping systems to controllers and remote displays

70 products

Pressure Test Fittings

Create a temporary connection point for gauges and other testing equipment

31 products

Pressure Switches

Activate controls, set off alarms, and power equipment when a set pressure is reached

310 products

Differential Pressure Switches

Activate controls and alarms when the pressure difference between process lines exceeds a setpoint

53 products

Vacuum Switches

Activate controls, set off alarms, and power equipment when a set vacuum is reached

26 products

Pressure and Vacuum Switches

Activate controls, set off alarms, and power equipment when a set pressure or vacuum is reached

6 products

Flow Transmitters

Send flow rate measurements to PLCs, data loggers, and remote displays

2 products

Flowmeters

Measure the flow rate of liquid or gas through your system

15 products

Test Pumps

Force air or liquid through your system to look for leaks; often called hydrostatic test pumps

26 products

Flow-Adjustment Valves

Gradually open and close to control the volume of air and liquids through a line

11 products

Hose and Hose Fittings

Flexible and stronger than tubing; often used to convey liquids and gases under pressure

9 products

Measuring and Inspecting

Pressure Film

Measures pressing forces in equipment by creating an instant, permanent image of pressure variation

45 products

Paper Pressure Analyzers

Take lab-quality scans of pressure recording film for frequent onsite measurements

1 product

Tire Pressure Test Gauges

Calibrate the accuracy of tire pressure and tire inflation gauges

1 product

Fuel Injection Pressure Testers

Check fuel injection pressure to maintain your car's gas mileage

1 product

Barometers

Measure atmospheric pressure changes

Refrigerant Pressure Testing Manifolds

Monitor refrigerant pressure when servicing air conditioning systems

7 products

Weather Stations

Measure multiple weather conditions at the same time

1 product

Data Recorders

Log temperature, humidity, or pressure levels to track changes and troubleshoot your system

25 products

Electrical Power, Networking, and Controlling

Air-Actuated Switches

Press with your hand or foot to turn circuits on and off with air pressure

13 products

Safety Equipment

Heat Stress Monitors

Measure temperature, humidity, and radiant heat to keep people safe from heat-related hazards

5 products

Blood Pressure Monitors

Take and store precise blood pressure and pulse rate readings

2 products