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Pressure Gauges

In various industrial applications, pressure gauges are used to measure the pressures of gases and liquids and to show how hard those substances are pushing against the walls of a container. They come in different types, including differential pressure gauges, which are used to measure how much pressure is lost between two points in a system, and the digital pressure gauges, which give accurate, easy-to-read readings in real time. HVAC and boiler gauges measure both the temperature and water pressure in boilers.

Pressure gauges made of stainless steel are tough and can withstand corrosion. This makes them appropriate for the kinds of environments and processes that are unkind to equipment, such as those involving chemicals and other aggressive fluids that can attack metal under certain conditions. Liquid-filled gauges are also good candidates for these processes, especially if they might vibrate or pulse. The fluid inside the gauge (usually glycerin or silicone) dampens the needle's movement, allowing it to settle at a more stable reading than if the needle were to dance around in the unfilled gauge.

Found 2002 items
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Found 2002 items
Manufacturer
Absolute Process Instruments (250)
APG (28)
Dwyer (750)
Omega Engineering (974)
Component
Analog Pressure Gauge (100)
Commercial Pressure Gauge (7)
Differential Pressure Gauge (412)
Digital Pressure Gauge (420)
Gauge (6)
General Service Gauge (33)
Industrial Digital Pressure Gauge (8)
Industrial Pressure Gauge (120)
Instrument Air Filter Regulator (3)
Liquid Fillable Industrial Pressure Gauge (45)
(Instrument-Sensor) Type
Bipolar Vacuum/Pressure (13)
Compound Vacuum/Pressure (6)
Low Pressure (52)
Photohelic® (50)
Piston Type (50)
Plastic Stationary Gauge (3)
Pressure (110)
Pressure Only (57)
Tridicator Gauge (23)
Vacuum (26)
(Instrument-Sensor) Application
Air (119)
Air And Compatible Gases (33)
Air And Non-Combustible Compatible Gases (208)
Gas (377)
Liquid (377)
(Instrument-Sensor) Hazardous Location Class
Class I - Div. 1 Groups A-D (189)
(Instrument-Sensor) IP Protection
IP40 (24)
IP54 (23)
IP65 (327)
IP66 (71)
IP67 (154)
IP68 (22)
(Instrument-Sensor) Measurement Accuracy
0.05% (38)
0.08% (215)
0.10% (23)
0.20% (19)
0.25% (229)
0.5% (54)
0.50% (52)
1% (58)
1.0% (45)
1.5% (94)
(Instrument-Sensor) NEMA Protection
NEMA 3 (23)
NEMA 4 (45)
NEMA 4/4X (36)
NEMA 4X (241)
(Instrument-Sensor) Span
0 To 1 Bar (4)
0 To -1 Bar (3)
0 To 1 Psi (4)
0 To -1 Psi (2)
0 To 10 Bar (7)
0 To 10 In H₂O (5)
0 To -10 In H₂O (2)
0 To 10 Psi (1)
0 To 100 Bar (1)
0 To 100 Psi (53)
(Instrument-Sensor) Supply Voltage
24 VAC (50)
24 VDC (50)
9 V Battery (63)
9-24 VDC (25)
AA Battery (23)
AAA Battery (225)
(Instrument-Sensor) Temperature Range
0 - 130°F/-18 - 55°C (36)
0 - 140°F/-18 - 60°C (25)
176°F/80°C (50)
20 - 120°F/-6.67 - 48.9°C (83)
20 - 140°F/-6.67 - 60°C (133)
20 - 200°F/-6.67 - 93.3°C (81)
-20°F/-28°C (133)
30 - 120°F/-1 - 49°C (38)
-4 - 140°F/-20 - 60°C (113)
-40 - 150°F/-40 - 65°C (13)
Normally In Stock
APG PG7-10000-PSIS-F0-L0-P0 Digital Pressure Gauge
Free U.S Ground shipping
$805.64
$671.37
Normally In Stock
APG PG7-100-PSIG-F0-L0-P0 Digital Pressure Gauge
Free U.S Ground shipping
$803.80
$669.83
Normally In Stock
APG PG5-10000-PSIS-F0-L0-P0 Digital Pressure Gauge
Free U.S Ground shipping
$747.32
$622.77
Normally In Stock
APG PG7-15-PSIG-F0-L0-P0 Digital Pressure Gauge
Free U.S Ground shipping
$768.41
$640.34
Normally In Stock
APG PG5-15-PSIA-F0-L0-P0 Digital Pressure Gauge
Free U.S Ground shipping
$695.16
$579.30
Normally In Stock
APG PG5-200-PSIG-F0-L0-P0 Digital Pressure Gauge
Free U.S Ground shipping
$711.68
$593.07
Normally In Stock
APG PG5-300-PSIG-F0-L0-P0 Digital Pressure Gauge
Free U.S Ground shipping
$711.68
$593.07
Normally In Stock
Dwyer 2000-00 Magnehelic® Differential Pressure Gauge
Free U.S Ground shipping
$107.24
$89.37
Normally In Stock
Dwyer DM-1122 Digimag® Digital Differential Pressure/Flow Gauge
Free U.S Ground shipping
$344.08
$286.73
Normally In Stock
Dwyer 3010MRS Photohelic® Switch/Gauge
Free U.S Ground shipping
$815.08
$679.23
Normally In Stock
Dwyer 4215 Capsuhelic® Differential Pressure Gauge
Free U.S Ground shipping
$1005.88
$838.23
Normally In Stock
Dwyer 2000-5KPA-ASF Magnehelic® Differential Pressure Gauge
Free U.S Ground shipping
$115.45
$96.21
Normally In Stock
Dwyer 2003-ASF Magnehelic® Differential Pressure Gauge
Free U.S Ground shipping
$115.45
$96.21
Normally In Stock
Dwyer SGZ-D10442N-GF 2.5" Industrial Pressure Gauge
Free U.S Ground shipping
$88.78
$73.98
Normally In Stock
Dwyer 2300-3KPA Magnehelic® Differential Pressure Gauge
Free U.S Ground shipping
$109.30
$91.08
Normally In Stock
Dwyer 2302 Magnehelic® Differential Pressure Gauge
Free U.S Ground shipping
$97.67
$81.39
Normally In Stock
Dwyer 4150 Capsuhelic® Differential Pressure Gauge
Free U.S Ground shipping
$1005.88
$838.23
Normally In Stock
Dwyer 2-5000-1KPA-NPT Minihelic® II Differential Pressure Gauge
Free U.S Ground shipping
$84.83
$70.69
Normally In Stock
Dwyer 2-5205-NPT Minihelic® II Differential Pressure Gauge
Free U.S Ground shipping
$84.83
$70.69
Normally In Stock
Dwyer PTGD-AC06A Differential Pressure Piston-Type Gauge
Free U.S Ground shipping
$457.16
$380.97
Normally In Stock
Omega DPG409-1KA DPG 0 TO 1000 PSIA
Free U.S Ground shipping
$1735.26
$1446.05
Normally In Stock
Omega PGM-63L-160PSI/11BAR Liquid Fillable Industrial Pressure Gauge
Free U.S Ground shipping
$211.02
$175.85
Normally In Stock
Omega DPG1000L-300G Digital Pressure Gauge
Free U.S Ground shipping
$866.75
$722.29
Normally In Stock
Dwyer DPGW-08 Digital Pressure Gauge With 1% Accuracy
Free U.S Ground shipping
$197.96
$164.97
Normally In Stock
APG PG7-5000-PSIS-F0-L0-P0 Digital Pressure Gauge
Free U.S Ground shipping
$803.80
$669.83
Normally In Stock
Dwyer DPGW-09 Digital Pressure Gauge With 1% Accuracy
Free U.S Ground shipping
$197.96
$164.97
Normally In Stock
Dwyer DPGW-10 Digital Pressure Gauge With 1% Accuracy
Free U.S Ground shipping
$197.96
$164.97
Normally In Stock
Dwyer DPGW-11 Digital Pressure Gauge With 1% Accuracy
Free U.S Ground shipping
$197.96
$164.97
Normally In Stock
Dwyer DPGW-12 Digital Pressure Gauge With 1% Accuracy
Free U.S Ground shipping
$197.96
$164.97
Normally In Stock
Dwyer 2-5000-0 Minihelic® II Differential Pressure Gauge
Free U.S Ground shipping
$84.83
$70.69
Normally In Stock
Dwyer 2-5000-0-NPT Minihelic® II Differential Pressure Gauge
Free U.S Ground shipping
$84.83
$70.69
Normally In Stock
Dwyer 2-5000-100MM Minihelic® II Differential Pressure Gauge
Free U.S Ground shipping
$84.83
$70.69
Normally In Stock
Dwyer 2-5000-100MM-NPT Minihelic® II Differential Pressure Gauge
Free U.S Ground shipping
$84.83
$70.69
Normally In Stock
Dwyer 2-5000-125PA Minihelic® II Differential Pressure Gauge
Free U.S Ground shipping
$84.83
$70.69
Normally In Stock
Dwyer 2-5000-125PA-NPT Minihelic® II Differential Pressure Gauge
Free U.S Ground shipping
$84.83
$70.69
Normally In Stock
Dwyer 2-5000-1KPA Minihelic® II Differential Pressure Gauge
Free U.S Ground shipping
$84.83
$70.69
Normally In Stock
Omega DPG1000L-15A Digital Pressure Gauge
Free U.S Ground shipping
$861.98
$718.32
Normally In Stock
Omega DPG1000DAR-500G-1N Digital Pressure Gauge
Free U.S Ground shipping
$1148.40
$957.00
Normally In Stock
Omega DPG1000DAR-3KG-3N Digital Pressure Gauge
Free U.S Ground shipping
$1142.06
$951.72
Normally In Stock
Omega DPG1000DAR-3KG-1N Digital Pressure Gauge
Free U.S Ground shipping
$1148.40
$957.00
Normally In Stock
Omega DPG1000DAR-30V100G-1N Digital Pressure Gauge
Free U.S Ground shipping
$1142.06
$951.72
Normally In Stock
Omega DPG1000DAR-30G-1N Digital Pressure Gauge
Free U.S Ground shipping
$1142.06
$951.72
Normally In Stock
Omega DPG1000DAR-300G-3N Digital Pressure Gauge
Free U.S Ground shipping
$1142.06
$951.72
Normally In Stock
Omega DPG1000B-2KG Digital Pressure Gauge
Free U.S Ground shipping
$728.12
$606.77
Normally In Stock
Omega DPG1000ADA-500G-1N Digital Pressure Gauge
Free U.S Ground shipping
$1083.40
$902.83
Normally In Stock
Omega DPG1000ADA-30G-1N Digital Pressure Gauge
Free U.S Ground shipping
$1077.43
$897.86

FAQs

What are the measuring ranges of pressure gauges and what is the accuracy and reliability?

The measuring ranges of pressure gauges typically span from vacuum pressures to over 10,000 psi, with accuracy varying from ±0.1% to ±2% of the full scale, depending on the gauge type and application, ensuring reliable performance in monitoring system pressures.

Instrumentation: Elements & Transmitters

2 pieces of hardware used in modern day instrumentation: measuring elements and transmitters.

Measuring Elements

Measuring elements are the part of the device that performs the measurement. For example, the measuring element of a pressure transducer is the part that is actually lowered into a tank that will take a pressure measurement. The measuring element of a flow meter is the part that actually measures the flow and an RTD or thermocouple takes the temperature measurement.

Transmitters

Transmitters collect information from measuring elements and sends the information to where it is needed. The transmitter interfaces with the measuring element and interprets the information. It then sends that information to a PLC, RTU or some other type of control unit. In many cases, the transmitter has the ability to communicate the information via multiple communication protocols. This may be necessary when the measuring element does not send the same type of signal that is needed by the controller. For example, it may be necessary to convert a temperature reading from a thermocouple to a 420 milliamp signal that can be received by a local PLC.