SPECIALTY GAUGE INTRODUCTION

This Specialty Gauge Catalog illustrates and descibes the various pressure gauges available from Weiss Instruments in Solid Front (Safety), Solid Back Liquid-Filled or Dry configuration. These gauges ideally suit the requirements of the Process, Industrial, Power and Chemical Industries and are available with Phosphor Bronze/Brass, 316 Stainless Steel or Monel internals.

Gauge accessories such as: Siphons, Snubbers, Gauge Cocks, Needle Valves, Ball Valves and Diaphragm Seals (to prevent corrosion or clogging of Gauges) are also illustrated.

OPERATING CONDITIONS

Conditions which a pressure gauge will be subjected to are a major factor in choosing the correct indicator for each application. The following points are offered as a guide for the proper selection.

•Where vibration and pulsation exist, the liquid-filled type may be better suited.

•Gauge range should be twice that of the operating range. Additional information can be obtained by reading Pressure Gauge Standard ANSI/ASME B40.1.

•Liquid filled ambient temperature limits – Glycerine 0-150°F / Silicone 50-0-150°F

•Non-filled gauges can withstand continuous service temperatures as high as 300°F, however, excess operating temperatures should be avoided whenever possible since mid-scale accuracy will be affected by approximately 1% per 100°F ambient temperature change.

•Non-filled gauges with stainless steel components and welded joints will withstand higher temperatures for short periods of time, although other internals may be damaged and calibration permanently affected.

•For highly corrosive and/or viscous process media a diaphragm seal may be appropriate to isolate the gauge. Refer to page’s 13 & 14.

WARNING: To prevent misapplication, media and ambient operating conditions should be considered when selecting pressure gauges. Improper gauge application can be detrimental, causing failure and possible property damage or personal injury.Additional information can be obtained by reading Pressure Gauge Standard ANSI/ASME B-40.1, available from the American Society of Mechanical Engineers, United Engineering Center, 345 East 47th St., New york, NY 10017.