Showing posts with label US Gauge. Show all posts
Showing posts with label US Gauge. Show all posts

Industrial Process and Commercial Pressure Gauge Selection

Industrial Process and Commercial Pressure Gauges

Download the US Gauge Product Selection Guide from this link.

Pressure gauges are ubiquitous in practically all industries on machines all around the world. At the same time, there are millions of different combinations of shapes, sizes, options, and materials. It's imperative to follow these five application factors for safe use and extended product life.

Process Media

Because direct contact of the sensing element to the process media is possible, any caustic media, particle media, or media that can harden and clog the pressure gauge element, must be avoided. Using a direct connection and Bourdon tube sensor is satisfactory for a non-clogging, non-corrosive medium. Use a diaphragm seal for process media that could cause blockage or be corrosive.

Temperature of the Process Media

Very hot media, such as steam or hot water, can raise the internal temperature of the gauge, resulting in failure or a dangerous state. For high-temperature applications, use a gauge "siphon" or diaphragm seal.

Environment and Ambient Operating Temperature

It is critical to understand the rated ambient environment for any instrument. Elevated ambient temperatures, dampness, vibration, and corrosive environments can all impact accuracy, calibration, and safety. If oxidizing or reducing atmospheres exist, select the appropriate case and mechanism materials, and consider installing supplementary devices, such as remote diaphragm seals, to move the gauge.

The Potential for Severe Pressure Fluctuations

The addition of pressure restrictors, snubbers, or liquid-filling will increase the service life of the pressure gauge in applications where dramatic line pulsations or high over-pressure conditions are possible.

Installation Orientation and Connection Type

Bottom (radial) and rear connectors are standard on pressure gauges. NPT (National Pipe Thread Taper) threaded connections are the most common. However, numerous different process connections are available, including straight threads, metric threads, and specialized fittings. Make sure you understand how the gauge is connected. Pressure gauges should almost always be upright when installed.

Piping Specialties / PSI Controls is standing by, ready to help you apply the correct pressure gauge for your application. Call us at 800-223-1468 for more information on pressure gauges.

Level and Pressure Instrumentation for Pulp & Paper Production

Pulp and paper
Pulp and paper applications create a notoriously harsh, high moisture and chemical-laden environment; coupled with extreme vibration in many of the processes. The following document outlines an array of level, pressure, and position applications and solutions for the pulp & paper industry.

Download a copy of the Measurement Solutions for the Pulp & Paper Industry here.


Piping Specialties, Inc / PSI Controls
800 223-1468
https://psi-team.com

Top 5 Considerations in Selecting Pressure Gauges

Pressure gauges are ubiquitous in industry and installed on machinery around the world. While there are millions of possible combinations of shapes, sizes, options and materials, careful attention needs to be given to the following five criteria for safe use and long product life.

1) Process Media
Direct exposure of the sensing element to the process media is a possibility, so attention must be given to any corrosive media, media with particulate, or media that can solidify and clog the pressure gauge element. For non-clogging media, a direct connection and Bourdon tube sensor can be applied. For process media that could potentially cause clogging, a diaphragm seal should be used.

2) Process Media Temperature
Gauge with diaphragm seal
Gauge with
diaphragm seal.
(AMETEKUS Gauge)
Very hot media, such as steam or hot water, can elevate the gauge's internal temperature leading to failure or an unsafe condition. For high temperature application, the use of a gauge "siphon" or diaphragm seal be applied.

3) Ambient Operating Temperature and Environment
It is important to know the rated ambient environment for any instrument. Elevated ambient temperatures, moisture, vibration, and corrosive atmospheres can all affect accuracy, calibration, and safety. Choose the proper case and mechanism materials if oxidizing or reducing atmospheres exist, and consider the addition of ancillary devices, such as remote diaphragm seals, to relocate the gauge.

4) Possibility of Severe Pressure Fluctuations
In applications where dramatic line pulsations or strong over-pressure conditions are a possibility the use of pressure restrictors, snubbers, or liquid-filling will extend the service life of the pressure gauge.

5) Mounting
Snubbers & restrictors
Snubbers & restrictors

Pressure gauges are standardly available with bottom (radial) and back connections. NPT (National Pipe Thread Taper) threaded connections are generally the standard. Many other process connections are available though, such as straight threads, metric threads, and specialized fittings. Make sure you know how the gauge is being connected. When mounting, pressure gauges should be almost always be mounted upright.

For more information about pressure gauges, contact PSI Controls by visiting https://psi-team.com or by calling 800-223-1468.