Hydraulic valve actuators require pressure switches for safe operation. In control cabinets, usually two of these measuring instruments are installed. One switch is used to control the pump for the hydraulic pressure, while the second triggers an alarm if the pressure …
Failure
Measuring tank levels in boiler systems with DELTA-trans
Jing Lyu | ApplicationsThe fill level in the feed tank of industrial boiler systems is a crucial process parameter to ensure a smooth energy supply of steam or hot water. A manufacturer of such systems uses the model DPGT40 differential pressure gauge from WIKA's DELTA-line product family to …
Flushing rings in diaphragm seal systems have several advantages
Tobias Hench | Know-howThe extension of a flanged diaphragm seal system using a flushing ring brings significant advantages. Among other things, it enables easy cleaning and, in addition, on-site calibration of the measuring location. Diaphragm seal systems are used in processes with …
Play it safe with double block & bleed
Pratik R. Vishwakarma | Know-howWhat is the safest way to separate a process and the attached pressure measurement technology? The HSG 253 standard must be applied to this question, and it answers unequivocally: by means of an instrumentation valve with double block & bleed (DBB). This …
SIL-certified: Functional safety with mechanical switches
July Yang | Know-howMechanical pressure and temperature switches perform sensitive tasks in safety-relevant applications, e.g. the safety function and monitoring of limit values. Their functional safety must be guaranteed accordingly. This is always the case if the instruments fulfil …