Description

The Deltabar FMD78 differential pressure transmitter with metal sensor uses two capillary diaphragm seals. Typically used in process and hygiene applications for continuous measurement of pressure differences in liquids, vapors, gases and dusts. The integrated HistoROM data module makes the management of process and device parameters easy. Designed according to IEC 61508 for use in SIL3 safety applications.

Measurement and control instruments

Product features

Measuring Principle Differential pressure
Characteristic Digital transmitter with metallic measuring diaphragms diaphragm seals and capillaries; Modular tran
Supply voltage 4...20mA HART; 10,5...45V DC (Non Ex):; Ex ia: 10,5...30V DC; PROFIBUS PA:; 9...32 V DC (Non Ex)
Reference Accuracy 0,075% + influence of diaphragm seal
Long term stability 0,05% of URL/year; 0,125% of URL/5 years
Process temperature -70°C...400°C; (-94°F...752°F)
Ambient temperature -40°C...85°C; (-40°F...185°F)
Measuring cell 100mbar...40bar; (40inH2O...600psi)
Smallest calibratable span 5 mbar (0.075 psi)
Vacuum resistance 50 mbar (7.25psi)

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