Equipping the industry of import and manufacture of flood diaphragms with different working pressures of all steel for manometers and pressure transmitters of pressure transmitters, supply of various types of flood diaphragms from the brands of Vika, Ashkraft, Roiger
Equipping the supply and equipment industry of oil, gas and petrochemical industries, selling all kinds of flood diaphragms
Diaphragm sealing or flood diaphragm is a flexible membrane that insulates a chamber. The flexible nature of this seal allows the pressure effect to pass through the barrier but does not allow the existing material to pass. A common use for diaphragm seals is to protect pressure sensors from the fluid being measured.
Because diaphragm seals must be very flexible, elastomers are commonly used, including a wide range of general and specialized tires. Metal diaphragms made of stainless steel of various grades, Monel, Inconel, Tantalum, Titanium and other metals are commonly used where high pressure levels and special chemical compatibility are required. .
Application of diaphragm seal
Diaphragm seals, also known as chemical seals or gauge guards, are used to protect a process fluid from a pressure sensor. Examples of this application are as follows:
- Hygienic processes in which the process fluid is allowed to accumulate in the pressure port of the sensor causing pressure on the barometer and breaking it.
- Fluids are a very pure process in which the metal surface of a pressure sensor may contaminate the fluid.
- Pneumatic systems where small changes in pressure must be eliminated.
Guide to using a flood diaphragm
In many cases, line control is virtually impossible without selecting a flood diaphragm.
Diaphragms play a very important and sensitive role in industry. Therefore, in the selection of diaphragms, many variables are effective that each of them should be examined and the effects caused by them should be examined to make the best choice for facial diaphragms. Accept and control the line in the best way.
Among the variables that should be considered in choosing the aperture:
- The desired fluid
- Pipe material (metal or plastic)
- Atmospheric pressure
- Fluid pressure
- Manometer type…
Also, in conditions where the fluid is High Viscosity, we must use the diaphragm of the seals. Therefore, in the case of fluids with the following properties, we should use a flood diaphragm:
1- Corrosive corrosive
2- High Viscosity
3- Cryogenic refrigeration
Wick flood diaphragm
Seal diaphragms, also known as chemical diaphragms, are also used for applications where the distance between the measuring sensor and the process must be the same.
The flood diaphragm in a system has two functions:
- Separation of measuring instruments from the measuring environment
- Pressure transfer by measuring
The part of the diaphragm that is in contact with the process is insulated with a flexible diaphragm. The space between the aperture and the measuring sensor is usually filled with an oil.
The pressure is transferred to the liquid through the elastic element and then through the liquid to the pressure gauge sensor.
In many cases a capillary is provided between the diaphragm and the measuring instrument to eliminate or minimize the effects of temperature on the measuring sensor.
Types of flood diaphragm connections:
The shape of the flood diaphragm
The diaphragm seal to both is :
1- Integral box-like shape and diaphragm inside it
2- Flange type is like two flanges that are placed on top of each other and the diaphragm is located in the middle of it .
The figures below show that the diaphragms of the seals are assembled with a pressure gauge.
Diaphragm ( Diaphragm )
Regarding diaphragms and flood diaphragms, we must consider that the diaphragm is a device for measuring pressure, while the flood diaphragm is only an accessory that is installed to the pressure gauge. In this method of measuring, a diaphragm is used. There is a bar on it.
The upper part of this equipment is filled with a liquid.
So if you have a Diaphragm Pressure Gauge or the so-called pressure gauge is delivered to you assembled on a flood diaphragm, you have a diaphragm.
But if you buy a flood diaphragm and a gauge separately, you have a flood diaphragm and a pressure gauge,
which together form a diaphragm.
Pressure is applied to the lower diaphragm and the gauge moves. Some manufacturers, such as Vika, produce diaphragms up to 360 psi. The application of diaphragms in the near-vacuum pressure range is greater than the bellows model. Silicone, the top of the curtain is filled.
Aperture measurement accuracy:
Measuring range 2 / 5 ~ 1 Bar
Measurement Accuracy 1 . 6% ±
If the fluid is corrosive and the pressure is low, it is best to use this mode, because when using a type diaphragm, there is no need to insert a flood diaphragm. Even if you use a C-type with a flood diaphragm, the measurement accuracy will be reduced to 6.1%. So it is better to use the same diaphragm (popularly known as the diaphragm in the industry) directly.
Diaphragm material can be selected from metal or non-metal. Rubber and leather are common types of non-metallic diaphragms. Non-metallic diaphragms are usually made in large dimensions and are used to measure lower pressures. Therefore, these diaphragms need a retaining spring to prevent them from bending in equilibrium. Metal diaphragms are made of bronze, brass, copper alloys, stainless steel, beryllium and special alloys and can be flat. Or corrugated.
The dimensions of metal diaphragms are small and depend on the thickness of the metal used, the modulus of elasticity, the shape and the number of folds of the diaphragm.
Rose Calibration Company in Melbourne, Australia with over ten years of experience provides all calibration, maintenance, and repair services throughout Australia. If you live in Sydney, Melbourne, Adelaide, Perth, Geelong, and Brisbane, you can receive your quote in less than two hours by fill-up the form via the “Booking” link.