TEL-TRU Pressure guage

GENERAL INFORMATION
All gauge components should be selected based upon knowing the pressure, temperature, and media to
prevent misapplication. Improper installation can damage the gauge and/or cause failure resulting in
personal injury or property damage. The information in this catalog is offered as a guide to assist in the proper selection of pressure gauges.

The operating conditions of a pressure gauge must always be considered. Pressure gauges should be
protected against sudden pressure changes,temperature changes, pulsation and/or mechanical
vibration. The proper application of accessories will solve most problems.

Pressure gauges should not be exposed to pressures greater than maximum dial reading. It is
recommended that the maximum working pressure be in the middle one-third of the scale range when
the pressure being measured is steady pressure. For fluctuating pressures the maximum working
pressure should be no more than one-third of the full scale range. Compound ranges are
recommended when the pressure to be measured will vary between vacuum and above atmospheric
pressures.

Since the measuring element of the pressure gauge may be directly exposed to the measuring media,
complete information about the media exposure of the pressure gauge should be obtained to select the
proper gauge materials. If the media is corrosive or would solidify in the pressure gauge, a diaphragm
seal protector should be used.The ambient atmosphere in which the pressure gauge is to be installed will have a direct effect on the use, life, and accuracy of the instrument. The atmospheric condition can attack inner gauge components or allow dirt to impair the operation of the pressure gauge.