Air Indicators | McMaster-Carr

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For Use With

Alcohol-Based Solvents

Gasoline Fuel Systems

Printed Circuit Boards

Stems with Clamping Nut

Surfaces

Thermocouple Connection Heads

Acetic Acid (White Vinegar)

Hydraulic Fluid (Petroleum Based)

Salt Water (Calcium Chloride)

Salt Water (Sodium Chloride)

Soap Solutions

Sodium Bicarbonate (Baking Soda)

Sodium Hydroxide (Caustic Soda)

Sodium Hypochlorite (Bleach)

Steam

Steel

Sugar Water (Sucrose)

Connection Location

Thread Type

Measures

Black Globe Temperature

Dew Point

Differential Pressure

Dial Diameter

Measurement Unit

Centimeters of Mercury

Kilograms per Square Centimeter

Kilopascals

Megapascals

Millibars

Millimeters of Mercury

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

Display Type

Dial Type

Scale Type

Pressure Numeric Increments

Fitting Connection

Connection Material

Gender

Connects To

Case Material

Graduations

RoHS

Compliant with Exemptions

REACH

Minimum Pressure

Maximum Continuous Pressure

Export Control Classification Number (ECCN)

Lens Material

Maximum Process Temperature

DFARS Specialty Metals

Exempt

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How can we improve?

5,213 Products

Fluid Handling

Pressure Indicators

Turn green when your compressed air line reaches a certain psi

3 products

Pressure Gauges

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

266 products

Vacuum Gauges

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

107 products

Differential Pressure Gauges

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

33 products

Pressure and Vacuum Transmitters

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

97 products

Pressure Transmitters

Send pressure readings to controllers and remote displays

363 products

Differential Pressure Transmitters

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

52 products

Pressure and Vacuum Gauges

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

42 products

Differential Pressure and Vacuum Gauges

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

8 products

Vacuum Transmitters

Transfer vacuum measurements to remote displays and controllers

16 products

Pressure Test Gauges

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

60 products

Differential Pressure Sensors

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

5 products

Vacuum Test Gauges

Verify that equipment is taking accurate vacuum measurements

8 products

Pitot Tubes

Connect to gauges to measure air flow in filters, cooling coils, and other air-handling equipment

4 products

Flow Sights

Visually confirm flow and inspect liquid color and clarity

3 products

Sights

Observe and monitor the contents of pipes, tanks, and other containers

21 products

RTDs

Measure and transmit liquid, gas, and surface temperature more precisely than thermocouples

7 products

Thermocouples

Measure and transmit liquid, gas, and surface temperature

77 products

Safety Equipment

Heat Stress Monitors

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

4 products

Measuring and Inspecting

Thermometers

Monitor temperature in tanks, pipes, control panels, and other equipment

23 products

Data Recorders

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

23 products

Heating, Ventilation, and Air Conditioning

Air Filters

Trap dust and debris in HVAC, exhaust, and electronics systems to improve efficiency and air quality

2 products