What is a Flushing Ring (Calibration Ring)?

Yokogawa diaphragm seal systems are available with an optional Flushing Ring.  A flushing ring is metal donut-shaped ring installed between the seal and the customer process connection. It is a wetted part. The ring has a port(s) that can be used to flush the surface of the diaphragm during cleaning. The ports are threaded and available in either ¼-inch or ½-inch sizes. The ports are available with extensions to make them easier to reach. The ring may also have ring holders to ensure the entire assembly aligns correctly to prevent leaks.

The ring can be referred to as a Calibration Ring. The flushing ports on the side of the ring allow the user to apply a calibration pressure and consequently calibrate the unit against that pressure. Calibration is accomplished by sandwiching the calibration ring between the remote seal and a blank process flange.

The ring can also serve as a reducer, a spacer, or a heat sink.

The ring is available as part of the diaphragm seal model code or as a separate line item.

Flushing Ring (R01)

Related Products & Solutions

EJA118E

  • DP Accuracy: ± 0.2% of Span
  • Response Time: 200 msec 
  • Static Pressure Accuracy: ±0.5% of Span
  • MWP: Up to flange rating

EJA210E

Flange-mounted Differential Pressure Transmitter designed for Liquid-level applications based on the EJA-E series.

EJA438E

Gauge Pressure Transmitter with Remote Diaphragm Seal

  • Accuracy: ± 0.2% of Span
  • Response Time: 200 msec
  • MWP: Up to flange limit

EJX118A

  • DP Accuracy: ± 0.15% of Span
  • Response Time: 200 msec
  • Static Pressure Accuracy: ±0.2% of Span
  • MWP: Up to flange rating

EJX118B Wireless Differential Pressure Transmitter with Remote Diaphragm Seals

Wireless diaphragm seals are used to prevent process medium from entering directly into the pressure-sensing assembly of the differential pressure and pressure transmitters, they are connected to the transmitter using capillaries filled with fill fluid.

EJX210A

Flanged-mounted Differential Pressure Transmitter designed for Liquid-level applications based on the EJX-A Series.

EJX210B Wireless Flange Mounted Differential Pressure Transmitter

The high performance wireless flange mounted differential pressure transmitter EJX210B features a single crystal silicon resonant sensor and is suitable to measure levels of densities of solidifying or precipitating liquids.

EJX438A

Gauge Pressure Transmitter with Remote Diaphragm Seal

  • Accuracy: ± 0.15% of Span
  • Response Time: 200 msec
  • MWP: Up to flange limit

EJX438B Wireless Gauge Pressure Transmitter with Remote Diaphragm Seals

Wireless diaphragm seals are used to prevent process medium from entering directly into the pressure-sensing assembly of the differential pressure and pressure transmitters, they are connected to the transmitter using capillaries filled with fill fluid.

Field Instruments

Yokogawa field instrument products includes a complete line of flowmeters, pressure transmitters, differential pressure transmitters, temperature transmitters, level transmitters, Fieldbus instruments and safety measurement instrumentation.

Pressure & Temperature Transmitters

Pressure/differential pressure transmitters are typically used in the oil, petrochemical, and chemical industries to measure liquid, gas, and steam flow rates as well as liquid levels in tanks.

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