Kg/Cm2 Pressure Gauges | McMaster-Carr

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63 Products

About Pipe Size

About Pressure Gauges

About Pressure Transmitters

Polycarbonate
Plastic Case With
Bottom Connection

ABS Plastic Case With Center Back Connection

Bottom Connection

Center Back Connection

A four-digit LCD display allows for easy reading of measurements. The LCD shuts off automatically to extend battery life. Gauges are commonly used with pneumatic regulators, compressors, and in critical processes that require high accuracy, such as hydraulic and laboratory applications.

For technical drawings and 3-D models, click on a part number.

Polycarbonate Plastic Case with 17-4 PH Stainless Steel Connection—(psi, atm, bar, kg/cm²)

For Use With: Air
Accuracy: ±0.5% Full Scale (Not Graded)

Available Pressure Ranges
psi	atm	bar	kg/cm²	Resolution, psi
0 to 100	0 to 6.8	0 to 6.8	0 to 7	0.1
0 to 1,000	0 to 68	0 to 68.9	0 to 70.3	1

											Gauge with Bottom Connection		9V Alkaline Disposable Battery
Ht.	Wd.	Dp.	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Batteries Included	Battery Size	Number of Batteries Required	Mounting Orientation	Features		Each	Pkg. Qty.		Pkg.
NPT Female
4 1/16"	2 11/16"	1 7/8"	1/8	-40° to 150°	35° to 130°	No	9V	1	Any	1-hr. Automatic Shut-Off	00000000	0000000	1	00000000	00000

ABS Plastic Case with Brass Connection—(psi, bar, kg/cm², MPa)

For Use With: Air, Carbon Dioxide, Hydrogen, Nitrogen, Natural Gas
Accuracy: ±1% Full Scale (Grade 1A)

Available Pressure Ranges
Pressure Range
psi	bar	kg/cm²	MPa	Resolution, psi
0 to 145	0 to 10	0 to 10	0 to 1	0.1

							Center Back Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Batteries Included	Mounting Orientation	Features		Each
NPT Male
1 3/4"	1/8	-10° to 140°	-10° to 140°	Yes	Any	5-min. Automatic Shut-Off	000000	000000
1 3/4"	1/4	-10° to 140°	-10° to 140°	Yes	Any	5-min. Automatic Shut-Off	000000	00000
NPT Male with Calibration Certificate Traceable to NIST
1 3/4"	1/8	-10° to 140°	-10° to 140°	Yes	Any	5-min. Automatic Shut-Off	00000000	000000
1 3/4"	1/4	-10° to 140°	-10° to 140°	Yes	Any	5-min. Automatic Shut-Off	00000000	000000

Low-Pressure Gauges for Chemicals

With PVC Guard

With CPVC Guard

With Polypropylene Guard

Bottom Connection (Plastic Guard)

A plastic or stainless steel guard, also known as an isolator, protects the gauge from damage caused by corrosive chemicals. Use them with pumps, filters, regulators, and in process lines to measure and display pressures.

Polypropylene and 316 stainless steel guards are more chemical resistant than PVC and CPVC guards.

For technical drawings and 3-D models, click on a part number.

Painted Steel Case with PVC Plastic Connection—Dual Scale (psi, kg/cm²)

For Use With: Water, Salt Water, Hydraulic Fluid, Bleach, Boric Acid, and Carbon Dioxide
Accuracy: ±2% Mid Scale (Grade B)

Available Pressure Ranges
Pressure Range		Graduation Marks		Numeric Increments
psi	kg/cm²	psi	kg/cm²	psi	kg/cm²
0 to 30	0 to 2.1	0.5	0.05	5	0.5
0 to 60	0 to 4.2	1	0.1	10	1
0 to 150	0 to 11.2	2	0.2	20	2

							Bottom Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Case Color	Guard Material	Guard Color		Each
NPT Female
2"	1/4	40° to 140°	40° to 140°	Black	PVC Plastic	Gray	0000000	0000000
2"	1/2	40° to 140°	40° to 140°	Black	PVC Plastic	Gray	0000000	000000

Painted Steel Case with CPVC Plastic Connection—Dual Scale (psi, kg/cm²)

For Use With: Water, Salt Water, Hydraulic Fluid, Bleach, Boric Acid, and Carbon Dioxide
Accuracy: ±2% Mid Scale (Grade B)

Available Pressure Ranges
Pressure Range		Graduation Marks		Numeric Increments
psi	kg/cm²	psi	kg/cm²	psi	kg/cm²
0 to 30	0 to 2.1	0.5	0.05	5	0.5
0 to 60	0 to 4.2	1	0.1	10	1
0 to 150	0 to 11.2	2	0.2	20	2

							Bottom Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Case Color	Guard Material	Guard Color		Each
NPT Female
2"	1/4	40° to 190°	40° to 190°	Black	CPVC Plastic	Gray	0000000	0000000
2"	1/2	40° to 190°	40° to 190°	Black	CPVC Plastic	Gray	0000000	000000

Painted Steel Case with Polypropylene Plastic Connection—Dual Scale (psi, kg/cm²)

For Use With: Water, Salt Water, Hydraulic Fluid, Boric Acid, and Carbon Dioxide
Accuracy: ±2% Mid Scale (Grade B)

Available Pressure Ranges
Pressure Range		Graduation Marks		Numeric Increments
psi	kg/cm²	psi	kg/cm²	psi	kg/cm²
0 to 30	0 to 2.1	0.5	0.05	5	0.5
0 to 60	0 to 4.2	1	0.1	10	1
0 to 150	0 to 11.2	2	0.2	20	2

							Bottom Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Case Color	Guard Material	Guard Color		Each
NPT Female
2"	1/4	40° to 240°	40° to 240°	Black	Polypropylene Plastic	White	0000000	0000000

3-in-1 Pressure and Vacuum Gauges

These portable gauges have three different dials to display pressure and vacuum measurements on a low, medium, and high scale. Also known as compound gauges, they measure both pressure and vacuum in hydraulic applications.

For technical drawings and 3-D models, click on a part number.

Steel Case with Steel Connection—Dual Scale (psi, in. of Hg, cm of Hg, kg/cm²)

Bottom Connection

For Use With: Air and Hydraulic Fluid
Accuracy: ±2% Mid Scale (Grade B)

		Left Gauge				Middle Gauge		Right Gauge					Bottom Connection
Dial Diameter	Pipe Size	Pressure Range, psi	Pressure Range, kg/cm²	Vacuum Range, in. of Hg	Vacuum Range, cm of Hg	Pressure Range, psi	Pressure Range, kg/cm²	Pressure Range, psi	Pressure Range, kg/cm²	Environment Temp. Range	Process Temp. Range	Overall Dia.		Each
NPTF Male
2"	1/8	0 to 150	0 to 10	30 to 0	76 to 0	0 to 5,000	0 to 350	0 to 600	0 to 42	-40° to 120°	-40° to 190°	6 7/16"	0000000	0000000

Pressure Transmitters for Compressed Air

For Use With: Air, Argon, Nitrogen
Accuracy: ±0.2%
Connection: See table
Housing Material: Polybutylene Plastic
Connection Material: Nickel-Plated Brass
Temperature Range: 25° to 120° F

With a pressure range common to most compressed air systems, use these transmitters to monitor your system's air pressure. Also known as transducers, these transmitters convert pressure to an electrical signal that can be interpreted by receiving devices such as remote displays and motor speed controls. They can also connect to a programmable logic controller (PLC) with two digital PNP switch outputs, so you can activate automated controls or alarms when a set pressure is reached. They have a digital display with buttons to change settings.

For your receiving device to interpret the signal from the transmitter, you will need to calibrate it for the transmitter's pressure range and output signal. As pressure increases, the output signal from the transmitter will increase. Transmitters will only provide accurate readings within the rated pressure range.

UL and C-UL recognized components, CSA certified, and CE marked, they meet American, Canadian, and European safety standards.

Transmitters with current output connect using two wires. The same wire is used to send a signal to the receiver and to power the transmitter. Current doesn’t lose signal over long distances and isn’t affected by electrical interference from other devices.

Transmitters with voltage output connect using three wires—two wires into the power supply and a separate wire that sends a signal to the receiver. The receiver and the transmitter share a common ground wire back to the power supply.

Add a panel-mounting bracket (sold separately) to mount these switches to a control panel for easy viewing and adjusting.

For technical drawings and 3-D models, click on a part number.

Transmitters

Analog Transmitter Output		Digital Switch Output
Signal	No. of	Signal Type	No. of	Pressure Range, psi	Maximum Continuous Pressure, psi	Maximum Short-Term Pressure, psi	Setpoint Range, psi	Input Voltage	Ht.	Wd.	Environmental Rating		Each
Wire Leads
1/8 NPT Male Pipe Connection
2.4-20mA	1	PNP	2	14.5-145	145	218	14.5-145	12-24V DC	1 3/16"	1 3/16"	IP40	0000000	000000
0.6-5V DC	1	PNP	2	14.5-145	145	218	14.5-145	12-24V DC	1 3/16"	1 3/16"	IP40	0000000	00000
1/4" OD Push-to-Connect Tube Connection
2.4-20mA	1	PNP	2	14.5-145	145	218	14.5-145	12-24V DC	1 3/16"	1 3/16"	IP40	0000000	00000
0.6-5V DC	1	PNP	2	14.5-145	145	218	14.5-145	12-24V DC	1 3/16"	1 3/16"	IP40	0000000	00000

Square Panel-Mount Brackets

Square Panel-Mount Bracket

For Panel Cutout
Ht.	Wd.	Mounting Hole Style		Each
1 7/32"	1 7/32"	Straight	0000000	00000

Pressure and Vacuum Transmitters for Compressed Air

For Use With: Air, Argon, Nitrogen
Accuracy: ±0.2%
Connection: See table
Housing Material: Polybutylene Plastic
Connection Material: Nickel-Plated Brass
Temperature Range: 25° to 120° F

Specifically made for compressed air and gas systems, these transmitters remotely monitor pressure and vacuum. Also known as transducers, they convert both pressure and vacuum into an electrical signal that can be interpreted by receiving devices, such as remote displays, and motor speed controls. They also have two digital PNP switch outputs that you can connect to your programmable logic controller (PLC) to activate automated controls or alarms when a set pressure or vacuum is reached. Change settings with the buttons on the digital display.

For your receiving device to interpret the signal from the transmitter, you will need to calibrate it for the transmitter's pressure or vacuum range and output signal. As pressure increases, the output signal from the transmitter will increase. Transmitters will only provide accurate readings within the rated pressure or vacuum range.

UL and C-UL recognized components, CSA certified, and CE marked, they meet American, Canadian, and European safety standards.

Transmitters with voltage output connect using three wires. Two wires connect to the power supply, and a separate wire sends a signal to the receiver. The receiver and the transmitter share a common ground wire back to the power supply.

Add a panel-mounting bracket (sold separately) to mount these switches to a control panel for easy viewing and adjusting.

For technical drawings and 3-D models, click on a part number.

Transmitters

Analog Transmitter Output		Digital Switch Output						Setpoint Range
Signal	No. of	Signal Type	No. of	Pressure Range, psi	Vacuum Range, in. of Hg	Maximum Continuous Pressure, psi	Maximum Short-Term Pressure, psi	Pressure, psi	Vacuum, in. of Hg	Input Voltage	Ht.	Wd.	Environmental Rating		Each
Wire Leads
1/8 NPT Male Pipe Connection
4-20mA	1	PNP	2	0-14.5	29-0	14.5	72	0-14.5	29-0	12-24V DC	1 3/16"	1 3/16"	IP40	0000000	000000
1-5V DC	1	PNP	2	0-14.5	29-0	14.5	72	0-14.5	29-0	12-24V DC	1 3/16"	1 3/16"	IP40	0000000	00000
1/4" OD Push-to-Connect Tube Connection
4-20mA	1	PNP	2	0-14.5	29-0	14.5	72	0-14.5	29-0	12-24V DC	1 3/16"	1 3/16"	IP40	0000000	00000
1-5V DC	1	PNP	2	0-14.5	29-0	14.5	72	0-14.5	29-0	12-24V DC	1 3/16"	1 3/16"	IP40	0000000	00000

Square Panel-Mount Brackets

Square Panel-Mount Bracket

For Panel Cutout
Ht.	Wd.	Mounting Hole Style		Each
1 7/32"	1 7/32"	Straight	0000000	00000

Vacuum Transmitters for Compressed Air

For Use With: Air, Argon, Nitrogen
Accuracy: ±0.2%
Connection: See table
Housing Material: Polybutylene Plastic
Connection Material: Nickel-Plated Brass
Temperature Range: 25° to 120° F

Designed for compressed air and gas systems, these transmitters remotely monitor vacuum. Also known as transducers, they convert vacuum to an electrical signal that can be interpreted by receiving devices, such as remote displays, and motor speed controls. They also have two digital PNP switch outputs that you can connect to your programmable logic controller (PLC) to activate automated controls or alarms when a set vacuum is reached. Change settings and view readings on the digital display.

For your receiving device to interpret the signal from the transmitter, you will need to calibrate it for the transmitter's vacuum range and output signal. As vacuum decreases, the output signal from the transmitter will increase. Transmitters will only provide accurate readings within the rated vacuum range.

UL and C-UL recognized components, CSA certified, and CE marked, they meet American, Canadian, and European safety standards.

Add a panel-mounting bracket (sold separately) to mount these switches to a control panel for easy viewing and adjusting.

For technical drawings and 3-D models, click on a part number.

Transmitters

Analog Transmitter Output		Digital Switch Output
Signal	No. of	Signal Type	No. of	Vacuum Range, in. of Hg	Maximum Continuous Pressure, psi	Maximum Short-Term Pressure, psi	Setpoint Range, in. of Hg	Input Voltage	Ht.	Wd.	Environmental Rating		Each
Wire Leads
1/8 NPT Male Pipe Connection
4-20mA	1	PNP	2	30-0	15	72	30-0	12-24V DC	1 3/16"	1 3/16"	IP40	0000000	000000
1-5V DC	1	PNP	2	30-0	15	72	30-0	12-24V DC	1 3/16"	1 3/16"	IP40	0000000	00000
1/4" OD Push-to-Connect Tube Connection
4-20mA	1	PNP	2	30-0	15	72	30-0	12-24V DC	1 3/16"	1 3/16"	IP40	0000000	00000
1-5V DC	1	PNP	2	30-0	15	72	30-0	12-24V DC	1 3/16"	1 3/16"	IP40	0000000	00000

Square Panel-Mount Brackets

Square Panel-Mount Bracket

For Panel Cutout
Ht.	Wd.	Mounting Hole Style		Each
1 7/32"	1 7/32"	Straight	0000000	00000

Ultra-High-Accuracy Digital Test Gauges for Pressure

Bottom Connection

With an accuracy of ±0.05%, these have the highest accuracy of all our test gauges. Use them for testing, calibrating, laboratory applications, and other critical processes that require precision. They have a five-digit LCD display that allows for easy reading of measurements.

For technical drawings and 3-D models, click on a part number.

304 Stainless Steel Case with 316 Stainless Steel Connection—Battery Powered

For Use With: Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Natural Gas, Water
Accuracy: ±0.05% Full Scale (Grade 5A)

Available Pressure Ranges
Pressure Range
psi	kPa	bar	kg/cm²	MPa	in. of H₂O	Resolution, psi
0 to 10	0 to 65	0 to 0.6	0 to 0.7	0 to 0.06	0 to 270	0.001
0 to 15	0 to 100	0 to 1	0 to 1	0 to 0.1	0 to 410	0.001
0 to 30	0 to 200	0 to 2	0 to 2	0 to 0.2	0 to 830	0.001
0 to 60	0 to 410	0 to 4	0 to 4	0 to 0.4	0 to 1,600	0.001
0 to 100	0 to 680	0 to 6	0 to 7	0 to 0.6	0 to 2,700	0.01
0 to 160	0 to 1,100	0 to 11	0 to 11	0 to 1.1	0 to 4,400	0.01
0 to 200	0 to 1,300	0 to 13	0 to 14	0 to 1.3	0 to 5,500	0.01
0 to 300	0 to 2,000	0 to 20	0 to 20	0 to 2	0 to 8,300	0.01
0 to 600	0 to 4,100	0 to 40	0 to 40	0 to 4	0 to 16,600	0.01
0 to 800	0 to 5,500	0 to 55	0 to 55	0 to 5	0 to 22,100	0.01
0 to 1,000	0 to 6,800	0 to 65	0 to 70	0 to 6	0 to 27,700	0.1
0 to 2,000	0 to 13,700	0 to 135	0 to 140	0 to 13	0 to 55,400	0.1
0 to 3,000	0 to 20,600	0 to 205	0 to 210	0 to 20	0 to 83,100	0.1
0 to 5,000	0 to 34,400	0 to 340	0 to 350	0 to 30	__	0.1

								Bottom Connection
Dial Dia.	Pipe Size	Environment Temperature Range, °F	Process Temperature Range, °F	Environmental Rating	Features	Digit Ht.	Batteries Included		Each
NPT Male—Calibration Certificate Traceable to NIST
3"	1/4	-40° to 180°	0° to 150°	NEC Class I Divisions 1, 2 Groups A, B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Class III Divisions 1, 2 IP65	Configurable Automatic Shut-Off (2 min., 5 min., 15 min., 30 min., or Never)	1 1/8"	Yes	0000000	000000000

Tire Inflator Gauges

Mate these gauges to a compressed air line to measure pressure while inflating tires. They are strong enough to stand up to constant use.

Indicator bar readouts slide out of the top of the gauge to display pressure readings.

Gauges that meet OSHA 29 CFR 1910.177 are designed to safely fill sidewall truck tires. They have a hose long enough to inflate the tires from a safe distance.

Gauges with a rubber sleeve prevent metal-to-metal contact with your tire to avoid damaging it.Gauges with a clip-on Schrader connection don't require you to hold them while you’re filling up your tire.

Indicator Bar Readout

With Two Angled Heads

With One Straight Head

		Pressure Range				Hose		Air Inlet		Air Outlet
Head Type	Number of Heads	psi	kg/cm²	Numeric Increments, psi	Indicator Bar Material	Lg.	Material	Pipe Size	Thread Type	Thread Size	Thread Type	Schrader Valve Connection Type	Features		Each
Zinc-Plated Zinc
Angled	2	10-120	1-5	2	Brass	12"	Rubber	1/4	NPT	0.305"-32	Schrader	Press-and-Hold	Rubber Sleeve	00000000	000000
Straight	1	10-90	1-5	2	Brass	12"	Rubber	1/4	NPT	0.305"-32	Schrader	Press-and-Hold	Rubber Sleeve	00000000	00000

Digital Readout

With One Straight Head

		Pressure Range			Hose		Air Inlet		Air Outlet
Head Type	Number of Heads	psi	kPa	Numeric Increments, psi	Lg.	Material	Pipe Size	Thread Type	Thread Size	Thread Type	Schrader Valve Connection Type	Specifications Met		Each
Chrome-Plated Zinc
Straight	1	0-150	0-1,030	0.1	5ft.	Rubber	1/4	NPT	0.305"-32	Schrader	Clip On	OSHA Compliant 29 CFR 1910.177	00000000	0000000
Straight	1	0-150	0-1,030	0.1	10ft.	Rubber	1/4	NPT	0.305"-32	Schrader	Clip On	OSHA Compliant 29 CFR 1910.177	00000000	000000
Straight	1	0-150	0-1,030	0.1	15ft.	Rubber	1/4	NPT	0.305"-32	Schrader	Clip On	OSHA Compliant 29 CFR 1910.177	00000000	000000

Compression Testers

Dial Readout

Check engine compression to maintain top performance. Testers have a quick-release coupler between the hose and the gauge.

							Hose
Readout Type	For Engine Type	Adapter Sizes Included, mm	Scale	Pressure Range, psi	Accuracy	Dial Dia.	Lg.	Material	External Reinforcement	Includes		Each
Dial	Gasoline	14	psi, kg/cm², bar, kPa	0-300	±2%	3"	15"	Rubber	Braided	Replacement Valve Core	0000000	000000

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About Pipe Size

About Pressure Gauges

About Pressure Transmitters

Digital High-Accuracy Pressure Gauges

Low-Pressure Gauges for Chemicals

3-in-1 Pressure and Vacuum Gauges

Pressure Transmitters for Compressed Air

Pressure and Vacuum Transmitters for Compressed Air

Vacuum Transmitters for Compressed Air

Ultra-High-Accuracy Digital Test Gauges for Pressure

Tire Inflator Gauges

Compression Testers