Saunders & Weeks (Bristol) Ltd Vacuum & Temperature Instrumentation - click here for text version.
   
  Tel: (+44) 0117 9557142 Fax: (+44) 0117 9556064
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Diaphragm Seal and Hygienic

Intended Service
Diaphragm seal gauges are designed to avoid any clogging that would occur in a bourdon tube gauge and can cope with a greater range of process temperature and aggressive product. They can be manufactured with special materials not available in bourdon tube gauges and with a remote reading facility. The diaphragm seal gauge is particularly suited to the petro-chemical and Food industry.
Diaphragm Seal and Hygienic Gauges
 
Normal Sizes 63, 100 and 150mm
Accuracy Class ± 1% Maximum Scale Value
EN 837:1998
Design EN 837:1998
Scale Ranges -1 to +400 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 316 Stainless Steel
Pressure Element
Material 316 Stainless Steel
Movement
Material Stainless Steel
Dial Aluminium with black lettering on white. With Pointer stop pin
Pointer Black aluminium pointer
Case 304 Stainless Steel
Window Clear plastic or glass
Optional Extras Hygenic Connections; such as triclamp, Din, SMS, IDF, RJT and homogeniser clamp with diaphragm or “Fish Tail” Special material; such as Monel, Hastelloy, PTFE, Tantalum In built pressure transmitter, Alarm Contacts, Flanged Connections, Special Dials.
 
   
Saunders & Weeks (Bristol) Ltd, 265-267 Church Road, Redfield, Bristol BS5 9HU, United Kingdom