- Gauges

SELECTING A PRESSURE GAUGE

How Do You Select A Pressure Gauge?

Selecting the appropriate pressure gauge can sometimes be a challenge. To select a pressure gauge there are 7 things you need to consider; environment & application, gauge size, connection, accuracy, gauge mounting, range and any gauge accessories.


ENVIRONMENT & APPLICATION

As the Bourdon tube is in direct contact with the medium being measured, the characteristics of the medium must be considered. Consider using a diaphragm seal if the process medium is corrosive, will leave a deposit or clog the Bourdon tube, or if the medium will solidify in the Bourdon tube.

Choosing the material of the pressure gauge is also important. If the medium is corrosive, stainless steel internals and casing should be chosen over brass. Brass is more suitable for general applications. The effects of moisture and weather conditions may also be harmful to the gauge and should be considered when selecting a gauge.

For applications that produce harmful pulsation, vibration or pressure spikes, the appropriate gauge or option should be chosen. For example, liquid filling a gauge or opting for a StabiliZR™ Gauge will minimize any ill effects of vibration and provide an easier pressure reading.

GAUGE SIZE

Winters manufactures a range of dial sizes, from 1” (25mm) to 10” (250mm).

CONNECTION

Winters offers bottom and back (centre and lower) connections on our gauges. The standard thread is NPT, however, other options are available such as BSP(G), SAE and many other special fittings. The most common connection sizes are 1/4″ NPT and 1/2″ NPT. Please contact Winters for all available connections.

ACCURACY

The degree of accuracy required should be determined to ensure that the proper gauge is used. Winters utilizes the ANSI/ASME standards for accuracy grading. We offer pressure gauges with accuracy from ± 0.25% (ANSI/ASME Grade 3A) to ± 3-2-3% (ANSI/ASME Grade B). Generally, the more critical the application, the higher the accuracy required.

GAUGE MOUNTING

Winters pressure gauges can be mounted in a variety of ways. For direct stem mount, we offer bottom, centre back, lower back and in-line connections. Consider purchasing a back flange for panel mounts, or a front flange if you need the gauge to be flush mounted. U-clamps are available as an alternative to flush mounting a gauge, or if you are unable to use a front flange. Also bear in mind that if a piece of equipment produces heavy vibration making pressure reading difficult, a gauge may be mounted remotely.

RANGE

Pressure Range

It is important to select a pressure range that is approximately twice the normal operating pressure of the media. The maximum operating pressure should not exceed 75% of the full scale range. If a gauge is not selected considering these criteria, it may result in fatigue of the Bourdon tube.

Temperature Range

The normal temperature ranges for dry gauges are between -40°F to 150°F(-40°C to 65°C). The normal temperature ranges for glycerin-filled gauges are -13°F to 150°F (-25°C to 65°C). It is important to know the normal operating temperature of the environment for proper gauge use. Gauge accessories can extend temperature ranges further.

GAUGE ACCESSORIES

Restrictor screws, snubbers and liquid filling are excellent accessories and options for reducing the effects of vibration and pulsation, and increasing the service life of pressure gauges. In situations where temperature is extreme, utilizing a syphon or remote monitoring the pressure gauge with a capillary and diaphragm seal are some alternatives to reduce the temperature of the process going into the gauge.

Some gauge options available include:

  • Custom Dials
  • Custom Ranges
  • Electric Contacts
  • Flanges & U-Clamps
  • Gauge Boots
  • Liquid Filling
  • Maximum Adjustable Pointer
  • Over/Under Stops
  • Oxygen Cleaning
  • Red Secondary pointer
  • Safety Case
  • Safety Glass
  • Silicone Dampening
  • StabiliZR™ Movement
  • Stainless Steel Tags

Note: When selecting a pressure gauge, always refer to ASME B40.100 (2013)

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Order Codes:

GAUGES

PROCESS GAUGES

PPC Process Gauge

PRC Receiver Gauge

PSG Schaeffer Gauge

PTR Tamper Resistant Process Gauge

STABILIZR™ GAUGES

PEM-ZR Economy StabiliZR™ Gauge

PFP-ZR Premium Stainless Steel StabiliZR™ Gauge

PFQ-ZR StabiliZR™ Stainless Steel Gauge

PN2-ZR NACE StabiliZR™ Gauge - MR0175-2002

PPC-ZR StabiliZR™ Process Gauge

INDUSTRIAL GAUGES

P1S 100 Series Gauge

P3S 300 Series Gauge

PBC Forged Brass Case Gauge

PCC Colour Coded Gauge

PCT Contractor Gauge

PFP Premium Stainless Steel Liquid Filled Gauge

PFP Premium Stainless Steel Liquid Filled Gauge for Panel Mounting

PFQ Stainless Steel Liquid Filled Gauge

PFQ Stainless Steel Liquid Filled Gauge with SAE Connection

PN2 NACE Liquid Filled Gauge - MR0175-200

PSC Safety Case Gauge

PTG Test Gauge

PTS Tube Stub Gauge

PXT Xmas Tree Gauge

PFH Stainless Steel Liquid Filled Pressure Gauge

ECONOMY GAUGES

P9S 90 Series Gauge

P9U 90 Series Panel Mounted Gauge

PEM Economy Gauge PEU Economy Panel Mounted Gauge

LEAD FREE GAUGES (LF)

PCT-LF Lead Free Contractor Gauge

PEM-LF Lead Free Economy Gauge

PET-LF Lead Free Economy Test Gauge

PFQ-LF Lead Free Stainless Steel Liquid Filled Gauge

DIFFERENTIAL GAUGES

PDT Differential Gauge

PDX Duplex Gauge

PFD WinAIR Differential Gauge

PPD, PRD, PSD, PVD High Static Pressure Differential Gauges

PPD Piston Gauge

PRD Rolling Diaphragm Gauge

PSD Small Convoluted Diaphragm Gauge

PVD Convoluted Diaphragm Gauge

SANITARY GAUGES

PAG 3A Premium Pharmaceutical & Sanitary Gauge

PSQ 3A All-Purpose Quality Sanitary Gauge

PSI Industrial Sanitary Gauge Assembly

COMPRESSED GAS GAUGES

PCG Compressed Gas Gauge

PRL Regulator Gauge

PSP High-Volume OEM Spiral Tube Gauge

PUP Ultra High Purity Pressure Gauge

PWL Welding Gauge

SPECIAL APPLICATION GAUGES

DPG Digital Pressure Gauge

PAL Altitude Gauge

PAM Ammonia Gauge

PEC Premium Stainless Steel Pressure Gauges with Electrical Contacts

PFE Sprinkler Gauge

PFG Refrigeration Gauge

PLP Low Pressure Gauge

PMN Mining Gauge

PTB Turbine Gauge

Pool Gauge

TEST KITS

AOM Air Over Water Test Gauge

PET Economy Test Gauge

PGWT Low Pressure Gas and Water Test Kit

PGTK Gas Line Test Kit

PLPT Low Pressure Gas Test Kit

PLT Low Pressure Test Kit

PTK Pressure and Temperature Kit

Tire Pressure Gauge

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Disclaimer: The content of these pages and documents are to be used for information purposes only. While Winters has taken every necessary step to verify the accuracy of the content, Winters cannot be held responsible or liable for any damages resulting from its use. We recommend speaking with a Winters representative if you have questions about selecting a product. Winters reserves the right to make product improvements that may not be reected here. All content is property of Winters and cannot be used without permission.

- Gauges

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