Vacuum Gauges with NIST Certificate

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Calibration Certificate Traceable to NIST

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Bottom

Center Back

Lower Back

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Differential Pressure

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Pipe Size

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Dial Diameter

For Use With

Dial Type

Maximum Vacuum, in. Hg

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Maximum Continuous Pressure

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Case Material

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Maximum Pressure, psi

Connection Material

17-4 PH Stainless Steel

Connects To

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REACH

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Compliant with Exemptions

Not Compliant

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

Lens Material

83 Products

About Pipe Size

About Pressure Gauges

About Pressure Transmitters

Single Scale With Bottom Connection

Single Scale With Center Back Connection

Dual Scale With Bottom Connection

Dual Scale With Center Back Connection

Bottom Connection

Center Back Connection

Use these gauges with vacuum pumps, packaging equipment, and in suction lines to measure and display vacuum.

Gauges with steel case are more impact resistant than gauges with ABS plastic case.

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

Painted Steel Case with Brass Connection—Single Scale (in. of Hg)

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

Available Vacuum Ranges
Vacuum Range, in. of Hg	Graduation Marks, in. of Hg	Numeric Increments, in. of Hg
30 to 0	0.5	5

					Bottom Connection		Center Back Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Case Color		Each		Each
NPT Male with Calibration Certificate Traceable to NIST
1 1/2"	1/8	-40° to 150°	-40° to 150°	Black	00000000	0000000	00000000	0000000
2"	1/4	-40° to 150°	-40° to 150°	Black	00000000	000000	00000000	000000
2 1/2"	1/8	-40° to 150°	-40° to 150°	Black	00000000	000000	000000	00
2 1/2"	1/4	-40° to 150°	-40° to 150°	Black	00000000	000000	00000000	000000
3 1/2"	1/4	-40° to 150°	-40° to 150°	Black	00000000	000000	000000	00
4 1/2"	1/4	-40° to 150°	-40° to 150°	Black	00000000	000000	000000	00

Painted Steel Case with Brass Connection—Dual Scale (in. of Hg, kPa)

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

Available Vacuum Ranges
Vacuum Range		Graduation Marks		Numeric Increments
in. of Hg	kPa	in. of Hg	kPa	in. of Hg	kPa
30 to 0	0 to -100	0.5	2	5	10

					Bottom Connection		Center Back Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Case Color		Each		Each
NPT Male with Calibration Certificate Traceable to NIST
1 1/2"	1/8	-40° to 150°	-40° to 150°	Black	00000000	0000000	00000000	0000000
2"	1/4	-40° to 150°	-40° to 150°	Black	00000000	000000	00000000	000000
2 1/2"	1/8	-40° to 150°	-40° to 150°	Black	00000000	000000	000000	00
2 1/2"	1/4	-40° to 150°	-40° to 150°	Black	00000000	000000	00000000	000000
3 1/2"	1/4	-40° to 150°	-40° to 150°	Black	00000000	000000	000000	00

Vibration- and Corrosion-Resistant Vacuum Gauges

Dual Scale With Bottom Connection

Dual Scale With Center Back Connection

Dual Scale With Lower Back Connection

Bottom Connection

Center Back Connection

Lower Back Connection

Designed for harsh environments prone to vibration, these gauges pair a corrosion-resistant 304 stainless steel case with a glycerin-filled dial to reduce needle flutter. Use them with vacuum pumps, packaging equipment, and in suction lines to measure and display vacuum.

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

304 Stainless Steel Case with Brass Connection—Dual Scale (in. of Hg, kPa)

For Use With: Air
Accuracy: ±1% Mid Scale (Grade A); except
4" Dial Dia.: ±1% Full Scale (Grade 1A)

		Available Vacuum Ranges
		Gauges with NIST Certificate
Vacuum Range		Graduation Marks		Numeric Increments
in. of Hg	kPa	in. of Hg	kPa	in. of Hg	kPa
2 1/2" Dial Diameter
30 to 0	0 to -100	0.5	2	5	10
4" Dial Diameter
30 to 0	0 to -100	0.5	1	5	10

Bottom Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Liquid Type		Each
NPT Male with Calibration Certificate Traceable to NIST
2 1/2"	1/4	35° to 140°	35° to 140°	Glycerin	000000000	0000000
4"	1/4	35° to 140°	35° to 140°	Glycerin	000000000	000000
Center Back Connection
NPT Male with Calibration Certificate Traceable to NIST
2 1/2"	1/4	35° to 140°	35° to 140°	Glycerin	000000000	000000
Lower Back Connection
NPT Male with Calibration Certificate Traceable to NIST
4"	1/4	35° to 140°	35° to 140°	Glycerin	000000000	000000

Ultra-Low Vacuum Gauges

Bottom Connection

Accommodate applications with very low vacuum with these gauges. Use them with vacuum pumps, packaging equipment, and in suction lines to measure and display vacuum.

Gauges with 304 stainless steel case have better corrosion resistance than gauges with steel case.

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

Painted Steel Case with Brass Connection—Single Scale (in. of H₂O)

For Use With: Air
Accuracy: ±1.6% Full Scale (Not Graded)

Available Vacuum Ranges
Vacuum Range, in. of H₂O	Graduation Marks, in. of H₂O	Numeric Increments, in. of H₂O
-100 to 0	2	20
-60 to 0	1	10
-30 to 0	0.5	5
-15 to 0	0.2	3

					Bottom Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Case Color		Each
NPT Male with Calibration Certificate Traceable to NIST
2 1/2"	1/4	0° to 140°	0° to 175°	Black	000000	0000000

304 Stainless Steel Case with Brass Connection—Single Scale (in. of H₂O)

For Use With: Air
Accuracy: ±1% Full Scale (Not Graded)

Available Vacuum Ranges
Vacuum Range, in. of H₂O	Graduation Marks, in. of H₂O	Numeric Increments, in. of H₂O
-100 to 0	2	20
-60 to 0	1	10
-30 to 0	0.5	5
-15 to 0	0.2	3

				Bottom Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F		Each
NPT Male with Calibration Certificate Traceable to NIST
4"	1/4	0° to 140°	0° to 175°	000000	0000000

Vibration- and Corrosion-Resistant Pressure and Vacuum Gauges

Dual Scale With Bottom Connection

Dual Scale With Center Back Connection

Dual Scale With Lower Back Connection

Bottom Connection

Center Back Connection

Lower Back Connection

Designed for harsh environments prone to vibration, these gauges pair a corrosion-resistant 304 stainless steel case with a glycerin-filled dial that reduces needle flutter. Also known as compound gauges, they measure both pressure and vacuum. Use them with pumps, filters, regulators, compressors, and in suction and process lines.

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

304 Stainless Steel Case with Brass Connection—Dual Scale (psi/in. of Hg, kPa)

For Use With: Air and Water
Accuracy: ±1% Mid Scale (Grade A); except
4" Dial Dia.: ±1% Full Scale (Grade 1A)

Available Pressure Ranges
Pressure Range		Vacuum Range		Graduation Marks			Numeric Increments
psi	kPa	in. of Hg	kPa	psi	in. of Hg	kPa	psi	in. of Hg	kPa
2 1/2" Dial Diameter
0 to 15	0 to 100	30 to 0	0 to -100	0.5	1	5	5	10	50
0 to 30	0 to 200	30 to 0	0 to -100	1	2	5	10	10	50
0 to 60	0 to 400	30 to 0	0 to -100	2	2	10	20	30	100
0 to 100	0 to 680	30 to 0	0 to -100	2	5	10	20	30	200
0 to 160	0 to 1,100	30 to 0	0 to -100	5	10	20	40	30	200
0 to 200	0 to 1,350	30 to 0	0 to -100	5	10	50	50	30	200
0 to 300	0 to 2,050	30 to 0	0 to -100	5	10	50	50	30	500
4" Dial Diameter
0 to 15	0 to 100	30 to 0	0 to -100	0.5	1	2	3	5	20
0 to 30	0 to 205	30 to 0	0 to -100	0.5	1	5	5	10	50
0 to 60	0 to 410	30 to 0	0 to -100	2	2	10	10	10	100
0 to 100	0 to 680	30 to 0	0 to -100	2	5	10	10	30	100
0 to 160	0 to 1,100	30 to 0	0 to -100	5	5	20	20	30	100
0 to 200	0 to 1,360	30 to 0	0 to -100	5	5	20	20	30	200
0 to 300	0 to 2,050	30 to 0	0 to -100	5	10	50	50	30	500

Bottom Connection
Dial Diameter	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Liquid Type		Each
NPT Male with Calibration Certificate Traceable to NIST
2 1/2"	1/4	35° to 140°	35° to 140°	Glycerin	00000000	0000000
4"	1/4	35° to 140°	35° to 140°	Glycerin	00000000	000000
Center Back Connection
NPT Male with Calibration Certificate Traceable to NIST
2 1/2"	1/4	35° to 140°	35° to 140°	Glycerin	00000000	000000
Lower Back Connection
NPT Male with Calibration Certificate Traceable to NIST
4"	1/4	35° to 140°	35° to 140°	Glycerin	00000000	000000

Differential Pressure and Vacuum Gauges

Commonly used to indicate clogged filters, these gauges display the difference between two pressure or vacuum measurements. They are also known as compound gauges.

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

Aluminum Case with Aluminum Connection—Single Scale (in. of H₂O)

For Use With: Air
Accuracy: ±2% Mid Scale (Not Graded); except
0" to 0.2" in. of H₂O: ±4% Mid Scale (Not Graded)
0" to 0.25" in. of H₂O: ±3% Mid Scale (Not Graded)

Available Pressure and Vacuum Ranges
Pressure Range, in. of H₂O	Vacuum Range, in. of H₂O	Graduation Marks, in. of H₂O	Numeric Increments, in. of H₂O
0 to 0.2"	0" to 0	0.01	0.05
0 to 0.25"	0" to 0	0.01	0.05
0 to 0.5"	0" to 0	0.02	0.1
0 to 1"	0" to 0	0.05	0.25
0 to 5"	0" to 0	0.2	1
0 to 10"	0" to 0	0.5	5
0 to 15"	0" to 0	1	5

NPT Female Calibration Certificate Traceable to NIST
Dial Diameter	Pipe Size	Max. Pressure, psi	Environment Temp. Range, °F	Process Temp. Range, °F	Features	Includes		Each
4"	1/8	15	20° to 140°	20° to 140°	Two Inlets and Two Outlets	Plugs for Unused Ports	0000000	0000000

Differential Pressure and Vacuum Gauges with Digital Display

Gauges have a four-digit LCD display for easy reading of measurements. Commonly used to indicate clogged filters, these gauges display the difference between two pressure or vacuum measurements. They are also known as compound gauges.

Aluminum Case with Brass Connection—(psi, kPa, in. of H₂O, in. of Hg, mbar)

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

Pressure Range
psi	kPa	in. of H₂O	mbar	Vacuum Range, in. of Hg	Resolution, in. of H₂O	Max. Pressure, psi	For Tube ID	Environment Temp. Range, °F	Process Temp. Range, °F	Digit Ht.	Batteries Included	Features		Each
Barbed Tube Connection with Calibration Certificate Traceable to NIST
0-0.723	0-4.982	0-20"	0-49.82	1.471"-0	0.01	10	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	Yes	40-Reading Memory, Overpressure Alarm	0000000	0000000
0-7.225	0-49.82	0-200"	0-498.2	14.71"-0	0.1	30	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	Yes	40-Reading Memory, Overpressure Alarm	0000000	000000
0-20	0-137.9	0-553"	0-1,379	40.72"-0	0.01	60	1/8"-3/16"	35° to 100°	0° to 140°	3/8"	Yes	40-Reading Memory, Overpressure Alarm	0000000	000000

High-Accuracy Pressure and Vacuum Transmitters

For Use With: Air, Argon, Diesel Fuel, Gasoline, Hydraulic Fluid, Nitrogen, Water
Accuracy: ±0.25%
Pipe Connection: NPT Male
Housing Material: 304 Stainless Steel
Connection Material: 17-4 PH Stainless Steel
Temperature Range: -40° to 255° F

With an accuracy of ±0.25%, use these transmitters in applications that require highly accurate measurement of both pressure and vacuum, such as activating vacuum pumps. All come with a calibration certificate traceable to NIST that states they’ve passed a test for accuracy. They convert pressure to an electrical signal that can be interpreted by receiving devices, such as remote displays, programmable logic controllers, and motor speed controls to monitor pressure or control equipment. As pressure increases, the output signal from the transmitter will increase. For your receiving device to interpret the signal from the transmitter, you will need to calibrate it for the pressure range and output signal of the transmitter. Transmitters will only provide accurate readings within the rated pressure range.

Rated IP67 and NEMA 4X, these transmitters seal out dust and water from temporary submersion. All are CE marked, so they meet European safety standards.

These transmitters connect using two wires to send a 4-20mA current output. 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.

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

									Transmitters with Calibration Certificate Traceable to NIST
Pressure Range, psi	Vacuum Range, in. of Hg	Maximum Continuous Pressure, psi	Maximum Short-Term Pressure, psi	Input Voltage	Pipe Size	Ht.	Wd.	Environmental Rating		Each
4-20mA Current Output—Wire Leads
0-15	29.9-0	15	30	9-30V DC	1/4	2 1/8"	1"	IP67, NEMA 4X	0000000	0000000
0-25	29.9-0	25	50	9-30V DC	1/4	2 1/8"	1"	IP67, NEMA 4X	0000000	000000
0-50	29.9-0	50	100	9-30V DC	1/4	2 1/8"	1"	IP67, NEMA 4X	0000000	000000
0-100	29.9-0	100	200	9-30V DC	1/4	2 1/8"	1"	IP67, NEMA 4X	0000000	000000

High-Accuracy Vacuum Transmitters

For Use With: Air, Argon, Diesel Fuel, Gasoline, Hydraulic Fluid, Nitrogen, Water
Accuracy: ±0.25%
Pipe Connection: NPT Male
Housing Material: 304 Stainless Steel
Connection Material: 17-4 PH Stainless Steel
Temperature Range: -40° to 255° F

At least four times as accurate as standard vacuum transmitters, these transmitters sense vacuum at an accuracy of ±0.25%, making them ideal for use in laboratories and in analytical testing applications. All come with a calibration certificate traceable to NIST that states they’ve passed a test for accuracy. These transmitters, also known as transducers, convert vacuum to an electrical signal that can be interpreted by receiving devices, such as remote displays, programmable logic controllers, and motor speed controls to monitor vacuum or control equipment. As vacuum decreases, the output signal from the transmitter will increase. 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. Transmitters will only provide accurate readings within the rated vacuum range.

IP and NEMA rated, these transmitters withstand weather, corrosion, and brief submersion. They’re CE marked, so they meet European safety standards.

These transmitters connect using two wires to send a 4-20mA current output. 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.

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

								Transmitters with Calibration Certificate Traceable to NIST
Vacuum Range, in. of Hg	Maximum Continuous Pressure, psi	Maximum Short-Term Pressure, psi	Input Voltage	Pipe Size	Ht.	Wd.	Environmental Rating		Each
4-20mA Current Output—Wire Leads
29.9-0	15	15	9-30V DC	1/4	1 5/16"	1"	IP67, NEMA 4X	0000000	0000000

Test Gauges for Vacuum

Bottom Connection (Flange Mount)

Lower Back Connection (Flange Mount)

Bottom Connection

Lower Back Connection

Test and calibrate transmitters, gauges, and other equipment that measures vacuum.

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

Aluminum Case with Brass Connection—Dual Scale (in. of Hg, kPa)

For Use With: Air
Accuracy: ±0.25% Full Scale (Grade 3A)

	Available Vacuum Ranges
	Vacuum Range		Graduation Marks		Numeric Increments
Dial Dia.	in. of Hg	kPa	in. of Hg	kPa	in. of Hg	kPa
4 1/2"	30 to 0	0 to 0	0.1	0.5	1	5
6"	30 to 0	0 to 0	0.1	0.5	1	10

					Bolt			Flange
Dial Dia.	Pipe Size	Environment Temp. Range, °F	Process Temp. Range, °F	Mounting Fasteners Included	Circle Dia.	Hole Thread Size	No. of Holes	Location	OD		Each
Bottom Connection (Flange Mount)
NPT Male—Calibration Certificate Traceable to NIST
4 1/2"	1/4	-20° to 200°	-20° to 250°	No	5 3/8"	10-24	3	Front	6 3/32"	0000000	0000000
6"	1/4	-20° to 200°	-20° to 250°	No	7"	1/4"-20	3	Front	7 9/16"	0000000	000000
Lower Back Connection (Flange Mount)
NPT Male—Calibration Certificate Traceable to NIST
4 1/2"	1/4	-20° to 200°	-20° to 250°	No	5 3/8"	10-24	3	Front	6 3/32"	0000000	000000
6"	1/4	-20° to 200°	-20° to 250°	No	7"	1/4"-20	3	Front	7 9/16"	0000000	000000