10 Best pressure gauge of 2019

  • 1
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  • Features
    • Updated with 5/16" Pressure Port Size, Fit in most gas valves and you do not need to purchase additional accessories. Flexible silicone tubing size updated to 19" length *1/4" diameter.
    • 11 Selectable Units&High Accurate, This gas pressure meter features 11 selectable units of measure. The device measures gauge and differential pressure in the range of ±2 psi. High resolution(0.001psi) gauge.
    • Date Hold & Max/Min/Avg Recording, Press the HOLD button momentarily to freeze the displayed reading. Zero function for offset correction or measurement. Press the REC button to access the MIN/MAX/AVG recording mode.
    • Multi-Application, Validate pressures in accordance with equipment manufacturer's specification for optimal system efficiency and safety. Specifically for use in HVAC, pneumatic controls, medical equipment, gas appliance repair and installation, laboratory testing, computer peripherals.
    • Portable, The digital gas manometer dimensions:5.79" x 2.16" x1.26", Slim design and the easy button for one hand operation, free up a hand for other work.
  • 2
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  • Features
    • Brass wetted parts for measuring non-corrosive liquid and gas pressure
    • Circular dial is enclosed in a steel case for corrosion resistance
    • Measures pressure with dual scale (psi/kPa)/(Hg. vacuum/kPa)
    • Display accuracy is + or - 3/2/3% over the entire range of the gauge (ASME B40.100 Grade B)
    • Lower mount or center back male connection with either 1/8" or 1/4" NPT rate
  • 3
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  • Features
    • R-134a Can to R-12/R-22 service port connection
    • 20" long hose
    • End fits R12, 22, 502 fittings
    • Gauge has scale readings for R134, R12, & 22
  • 4
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  • Features
    • Sensitive diaphragm gauge calibrated in inches of water column and ounces per square inch, Improved lamination strength of diaphragm (bellows) to brass plate withstands higher over-pressure, Tube nipple for easy connection to system manifold, Two gauge ranges available, The unique single bellows on brass plate design replaces the double bellows for a stronger seal that resists greater over-pressure
    • Brand name: Yellow Jacket Ritchie
    • Model number: 78060
    • Country of Origin: China
  • 5
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  • Features
    • FREE SHIPPING:: LIQUID/GLYCERIN FILLED PRESSURE GAUGE. LOWER MOUNT
    • RATED WOG.... WATER - OIL - GAS/VAPOR
    • 0-100 PSI
    • 2.5" FACE/DIAL 1/4" MALE NPT CONNECTION
    • FREE SHIPPING
  • 6
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  • Features
    • Pressure range:0-1Mpa or 0-150 PSI,1/4" NPT,Diameter of gauge: 2.5"
    • LIQUID/GLYCERIN FILLED PRESSURE GAUGE,2.5" FACE/DIAL 1/4" MALE NPT CONNECTION
    • Stainless steel case, Copper alloy wetted parts
    • broad applications - water, oil, air and more
    • Monitor the post R.O. water pressure and vital to the functionality of your RO system!
  • 7
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  • Features
    • Professional quality & durability
    • Stainless steel case, Copper alloy wetted parts
    • 1/4" lower mount connection
    • broad applications - water, oil, air and more
  • 8
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  • Features
    • 1. HIGH ACCURACY: performance tested & certified accurate to ±1% (Relative Humidity Temperature 25°C) with display resolution of 0.5 psi; FOUR different measuring units to choose: 0 ~ 200 PSI, 0 ~ 14 BAR, 0 ~ 14 KGF/CM², 0 ~ 1400KPA.
    • 2. WIDE APPLICATION for measuring gas and air pressure. It applies to these fields of pressure container, automation equipment, matching with laboratory equipment and all vehicles tires including heavy duty ones.
    • 3. BATTERY SAVING: Power by 2 x LR03 AAA 1.5V (Included in the package). After measuring, the pressure gauge will turn off automatically after 150s of inactivity to preserve battery life.
    • 4. HIGH QUALITY, shock resistance, vibration resistance and durable.
    • 5. One year warranty, unconditionally new replacement or refund for any quality product.
  • 9
  • *Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API
  • Features
    • Brass wetted parts for measuring non-corrosive liquid and gas pressure
    • Circular dial is enclosed in a steel case for corrosion resistance
    • Measures pressure with dual scale (psi/kPa)/(Hg. vacuum/kPa)
    • Display accuracy is + or - 3/2/3% over the entire range of the gauge (ASME B40.100 Grade B)
    • Lower mount or center back male connection with either 1/8" or 1/4" NPT rate
  • 10
  • *Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API
  • Features
    • Stainless Steel Case and Bezel
    • Brass Internals and Connection (with built in snubber)
    • Phosphor Bronze Bourdon Tube
    • Liquid Filled
    • Plastic Lens

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

  • Sensitive diaphragm gauge calibrated in inches of water...
  • Brand name: Yellow Jacket Ritchie
  • Model number: 78060

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

  • Brass wetted parts for measuring non-corrosive liquid and...
  • Circular dial is enclosed in a steel case for corrosion...
  • Measures pressure with dual scale (psi/kPa)/(Hg. vacuum/kPa)

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

  • Pressure range:0-1Mpa or 0-150 PSI,1/4" NPT,Diameter of...
  • LIQUID/GLYCERIN FILLED PRESSURE GAUGE,2.5" FACE/DIAL 1/4"...
  • Stainless steel case, Copper alloy wetted parts

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

  • Sensitive diaphragm gauge calibrated in inches of water...
  • Brand name: Yellow Jacket Ritchie
  • Model number: 78060

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

  • FREE SHIPPING:: LIQUID/GLYCERIN FILLED PRESSURE GAUGE. LOWER...
  • RATED WOG.... WATER - OIL - GAS/VAPOR
  • 0-100 PSI

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

  • Pressure range:0-1Mpa or 0-150 PSI,1/4" NPT,Diameter of...
  • LIQUID/GLYCERIN FILLED PRESSURE GAUGE,2.5" FACE/DIAL 1/4"...
  • Stainless steel case, Copper alloy wetted parts

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

  • Professional quality & durability
  • Stainless steel case, Copper alloy wetted parts
  • 1/4" lower mount connection

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

  • 1. HIGH ACCURACY: performance tested & certified accurate to...
  • 2. WIDE APPLICATION for measuring gas and air pressure. It...
  • 3. BATTERY SAVING: Power by 2 x LR03 AAA 1.5V (Included in...

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

  • Brass wetted parts for measuring non-corrosive liquid and...
  • Circular dial is enclosed in a steel case for corrosion...
  • Measures pressure with dual scale (psi/kPa)/(Hg. vacuum/kPa)

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

  • Stainless Steel Case and Bezel
  • Brass Internals and Connection (with built in snubber)
  • Phosphor Bronze Bourdon Tube

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

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*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

*Last update on 2019-10-26 / Affiliate links(As an Amazon Associate I earn from qualifying purchases.) / Images from Amazon Product Advertising API

Pressure gauge guide

What is a pressure gauge?

On pressure gauge is a device for detecting and displaying the physical pressure of liquids and gases. In most cases, the relative pressure (atmospheric air pressure) is measured. With absolute pressure gauges (e.g., barometers) a vacuum is instead measured as the reference pressure. Differential pressure gauges in turn measure the pressure difference between any two systems.
Pressure gauges can be classified in metrological practice on the basis of various criteria:
1. Application: Standard, industrial or chemical manometer
2. Accuracy: Use and precision gauge
3. Pressure range: Vacuum, low pressure or high pressure gauges
4. Method: mechatronic, mechanical or electrical measuring devices
In principle, however, pressure gauges are subdivided according to their measuring method into:
1. direct pressure measuring instruments: Here the physical result of the acting force on a given surface is determined.
2. Indirect pressure gauges: In this case, the gauges use the secondary physical effects metrologically. This can e.g. the elastic deformation of the measuring element, as well as chemical, electrical or optical effects of the pressure be. Methods used in this measurement technique are ion current measurement, friction, compression or heat transfer.

Types of pressure gauges.

The selection of pressure gauges is great. But how do they work and which measuring methods are they assigned to?
Here are some pressure gauges and a short description of them:
1. direct pressure gauges:
– Piston pressure gauge / pressure compensator: A piston moves against a force and thereby indicates the pressure. The force is e.g. applied by springs or weights. This principle is used for very simple manometers and for calibrating or calibrating other pressure gauges.
– U-tube manometer: A U-shaped glass tube is filled to about half with a barrier liquid such as water or mercury filled. If there is a pressure difference between the legs of the U, the column shifts to the side with the lower pressure. The measure of the difference in pressure is the level difference.
– McLeod Manometer: This compression-liquid manometer was named after its inventor Herbert McLeod. In this pressure gauge, the amount of gas with the volume V1 is compressed to the volume V2. At the same time, the pressure increases from p1 to p2 in the same ratio. This can be measured according to the principle of the U-tube manometer. From the knowledge of the volumes, the initial pressure p1 can be calculated from p2 by Boyle-Mariott’s law.
– Ring balance: Here is a hollow ring with a partition partially filled with barrier fluid. Above the liquid are chambers, which are connected to the pressures to be measured. These rotate the ring until a force balance is achieved with a fixed counterweight.
2. indirect pressure gauges:
– Bourdon tube pressure gauge: Depending on which pressure range is to be measured, the measuring element consists of a helical, circular or helical bourdon tube / Bourdon spring. When pressure is applied, the Bourdon tube starts to unwind. The end of this Bourdon thereby undergoes a path change, which is transmitted via a pull rod on a segment gear.
– Diaphragm pressure gauge: A circular diaphragm spring is usually between two flanges. If a pressurization takes place, the diaphragm spring bends and thereby converts a rotational movement of the pointer axis.
– capsule pressure gauge: This is a special type of diaphragm pressure gauge. The capsule is two plate springs welded together at the edges and arranged one above the other. This creates a closed pressure chamber, the so-called load cell. A capillary tube is tightly welded to the capsule. The measuring medium is conducted via this tube into the capsule, where both sides can bend.
3. Special pressure gauges:
– Barometer: This device is used to determine the air pressure. In doing so, the pressure against the vacuum is measured with the help of absolute pressure measuring instruments. The force created by the pressure difference affects a surface. By force measurement, the pressure difference can be determined.
– Pressure sensors: This measuring element converts the pressure into a proportional electrical output. The application pressure is determined by the definition of the pressure and the return to a force measurement.

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