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Chemical & petrochemical industries Diaphragm monitoring for diaphragm seals

Chemical & petrochemical industries Diaphragm monitoring for diaphragm seals

Chemical & petrochemical industries Diaphragm monitoring for diaphragm seals

Product catalog summary
Introduction
The document discusses WIKA's diaphragm monitoring system designed for critical processes in the chemical and petrochemical industries. The system features a patented double-diaphragm design that prevents medium leakage into the environment and system fill fluid contamination of the product.

Diaphragm Monitoring System
The system includes a diaphragm seal with a double-diaphragm system, ensuring reliable separation between the environment and the process in case of diaphragm rupture. This allows the measuring task to continue without risk to the process. The system is suitable for harsh conditions and aggressive media, ensuring a secure connection between the medium and the monitoring system.

System Components
  • Connection to the pressure measuring instrument
  • Monitoring element
  • Diaphragm seal
  • Internal diaphragm
  • Outer diaphragm

Variability
The diaphragm monitoring system can be configured in various instrument variants, including:
  • Double-diaphragm system with flange connection and all welded, flush diaphragm
  • Double-diaphragm system with threaded connection and internal, all welded diaphragm
Pressure measuring instruments, sensors, switches, or transmitters can be used as monitoring elements.

Functional Description
Normal Operation: The system operates within performance limits, with the space between diaphragms evacuated. The monitoring element signals the condition in the green area, indicating normal operation.
Diaphragm Rupture: An increase in pressure in the intermediate space triggers an alarm signal, indicating diaphragm rupture. The system maintains its measuring function, ensuring process safety.

Safety
The monitoring element withstands process pressure even after diaphragm rupture. The system's materials match those of the wetted parts, ensuring safety. However, the system must be replaced immediately after damage.

Product Models
  • DMS34: Threaded connection, suitable for chemical and petrochemical industries, made of Monel 400.
  • DMS27: Flange connection, suitable for chemical, petrochemical, oil, and gas industries, made of Hastelloy C276.
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Catalog excerpts

Chemical & petrochemical industries Diaphragm monitoring for diaphragm seals-1

Chemical & petrochemical industries Diaphragm monitoring for diaphragm seals

 Open the catalog to page 1
Chemical & petrochemical industries Diaphragm monitoring for diaphragm seals-2

DIAPHRAGM MONITORING SYSTEM The WIKA combination of diaphragm seal, pressure measuring instrument and monitoring element is ideally suited for the harshest measuring tasks. The systems can withstand aggressive, contaminated media and they ensure a secure connection between the medium and the diaphragm monitoring system. In this way the pressure can be determined reliably, and the diaphragm condition can be monitored. WIKA's patented double-diaphragm design is the solution for critical processes where neither the medium should find its way into the environment, nor should the system fill fluid...

 Open the catalog to page 2
Chemical & petrochemical industries Diaphragm monitoring for diaphragm seals-3

Diaphragm monitoring system with threaded connection The diaphragm monitoring can be realised on a number of instrument variants. You can choose between three basic models: ■ Double-diaphragm system with flange connection and all welded, flush diaphragm ■ Double-diaphragm system with threaded connection and internal, all welded diaphragm Diaphragm monitoring system with flange connection Pressure gauges, pressure sensors, pressure switches or process transmitters are suitable as measuring and/or monitoring elements. Pressure measuring instrument: Model IPT-20 The monitoring element is mainly...

 Open the catalog to page 3
Chemical & petrochemical industries Diaphragm monitoring for diaphragm seals-4

DMS34 Diaphragm monitoring system Diaphragm monitoring system Process connection Flange connection Normal operation In normal operation, the pressure measurement and the diaphragm monitoring operate without limitations within the performance limits of the overall system. The space between the two diaphragms is evacuated. With the monitoring element, this vacuum is measured and the condition signalled in the green area. No alarm signal will be output. Diaphragm rupture In the event of a diaphragm rupture, the pressure monitored in the intermediate space increases. As soon as the display of the...

 Open the catalog to page 4

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.
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