Saunders & Weeks (Bristol) Ltd Vacuum & Temperature Instrumentation - click here for text version.
   
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Diaphragm

Intended Service
These Diaphragm gauge is particularly useful for the pumping and transporting of viscous liquids and powders. The use of a diaphragm avoids any clogging that would occur in a bourdon tube gauge and on some chemical processes unsuitable for bourdon gauges.
Diaphragm Gauge
 
Normal Sizes 100 and 150mm
Accuracy Class ± 2.5% Maximum Scale Value
EN 837:1998
Design EN 837:1998
Scale Ranges -1 to 16 bar or equivalent other units of pressure or vacuum
Working Pressure
Steady 3/4 of full scale value
Fluctuating 2/3 of full scale value
Short time Full scale value
Operating Temperature
Ambient TMIN –25 to TMAX +60 ºC
Medium TMAX +60 ºC
Temperature Error
Additional error when temperature of the pressure element deviates from +20 ºC
Rising Temperature +0.3%/10 ºC
Falling temperature -0.3%/10 ºC
Percentage of the true scale value
  STANDARD FEATURES
Pressure Connections
Radial entry
Material Brass
Pressure Element
Material Beryllium Copper
Movement
Material Brass
Dial Aluminium with black lettering on white. With Pointer stop pin
Pointer Black aluminium pointer
Case For 100mm Zinc, 150mm Aluminium.
Window Glass
Optional Extras Special Dials, Stainless Wetted Parts, UPVC Connections, Flanged Connection
 
   
Saunders & Weeks (Bristol) Ltd, 265-267 Church Road, Redfield, Bristol BS5 9HU, United Kingdom