Transcription of Fisher 2500-249 Pneumatic Controllers and Transmitters
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Fisher 2500-249 Pneumatic Controllers and Transmitters
2500-249 Pneumatic Controllers andTransmittersTypical caged and cageless sensor/instrumentconfigurations are shown in figures 1 and 2. Cagedsensors (figure 3) provide more stable operationthan do cageless sensors (figure 4) for vessels withinternal obstructions or considerable internalturbulence. Cageless sensors are generally used onspecific gravity and interface control applicationsrequiring large displacers that are more easilyaccommodated by flange connections up to NPS availability of many different displacer stemlengths permits lowering the displacer down to themost advantageous depth in the Pneumatic Controllers and Transmitters areused wherever rugged, dependable, and simplyconstructed displacer-style pneumaticinstrumentation is required in liquid level, interfacelevel, or density service.
www.Fisher.com Fisher 2500-249 Pneumatic Controllers and Transmitters Typical caged and cageless sensor/instrument configurations are shown in figures 1 and 2.
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