EK Engineering

Old ginani, Bikaner, Rajasthan

Working Principle:

Fischer MA11 is suitable for measurement of liquid, fluid or gas pressure. Measured pressure is channeled into the manometer through connecting shank. The applied pressure causes the measuring element to deform elastically. This movement, transformed by the motion train, deflects the needle proportionately to the applied pressure.

Together with motion train, needle and dial, the measuring element and the connecting shank comprise physical unit of MA11. This makes the measuring system independent of forces acting on the housing. Internal arrester supports limit of needle deflection to 270.

Key Features:

• Robust mechanical construction
• Optional: equipped with limit signal transmitters or angular position measuring transducers
• meeting safety standards

Key Specifications:

• Measuring range: 0 0.6 bar to 0 600 bar
• Construction: compliance to DIN EN 837-1
• Max. pressure load: 1.3 x upper range value
• Display accuracy: Class 1.0
• Temperature error: 0.3 % / 10 C
• Permissible ambient temperature: -25 C to +60 C
• Permissible media temperature: max. 60 C (measuring range < 40 bar), max. 100 C (measuring range > 60 bar)
• Measured value display: Round housing dia 100 or 160 mm
• Protection: IP54 in accordance with DIN 60529
• Measuring system: brass / bronze (measuring range < 40 bar); brass / CrNi Steel 1.4571 (measuring range > 60 bar)
• Housing: CrNi Steel 1.4301
• Optional: limit signal transmitter, damping fluid filling, limit indicator needle

Application areas:

• Mechanical and plant engineering
• Hydraulics
• Pneumatics
• Heating and air-conditioning technology
• Environment technology

Industrial areas:

• Marine, shipping
• process industries
• paint, chemical
• water treatment

Working Principle:

The pressure chamber consist of two stainless steel diaphragms, mechanically linked by rigid connecting rod. To compensate for high static pressures, the cavity between the two diaphragms is filled with hydraulic fluid (silicon oil).

When equal pressure is applied on both diaphragms, they are at zero position. When there is a difference in pressures acting on the two diaphragms, they are deflected away from the high pressure side, towards the lower pressure side, causing a displacement of the connecting rod.A precision mechanism translates the linear displacement of the diaphragm connecting rod to angular movement of the gauges dial pointer. The connecting rod has intermediate flanges on either side, which protects the diaphragms against excess differential pressure.

Key Features:

• High corrosion resistant, due to stainless steel diaphragm
• Robust, wear-resistant movement
• Rinseable pressure chamber, insensitive to dirt
• Overpressure protected upto 250 bar

Key Specifications:

• Measuring range: 0 60 mbar to 0 400 mbar, 00.6 bar to 025 bar, 040 kPa to 01600 kPa
• Max pressure load: PN 250, PN 400 (range > 0.6 bar)
• Operating temperature: Ambient: -20C to +80C; Media: -20C to +80C
• Protection class: IP54 per DIN EN 60529
• Accuracy: +/- 1.6% full scale
• Measuring system: Pressure chamber chrome-nickel-steel 1.4404 / AISI 316L/ Standard diaphragm
• Pressure chamber material: 1.4404
• Pressure transfer liquid: Silicon oil
• Circular dial type 100 or 160 mm diameter indicator

Industrial areas:

• Manufacturing and chemical plants
• Onshore and offshore area
• Petrochemical, solvent industry
• Sewage, effluent treatment plants

Principles of Operation:-The pressures to be compared act on flexible stainless steel diaphragms on either side of the sensing capsule. The two diaphragms are mechanically linked by a rigid connecting rod. To compensate for high static pressures, the cavity between the two diaphragms is filled with hydraulic fluid.When pressures are equal on both diaphragms, they are at zero position. When there is a difference in pressures acting on the two diaphragms, they are deflected away from the high pressure side, towards the lower pressure side, causing a displacement of the connecting rod.A precision mechanism translates the linear displacement of the diaphragm connecting rod to angular movement of the gauges dial pointer.The connecting rod has intermediate flanges on either side, which protects the diaphragms against excess differential pressure.When differential pressure exceeds the specified limit, the flange towards the lower pressure side is pressed against the sealing O-ring on the inside of the sensing capsule.Important FeaturesCorrosion resistantRugged, wear resistant mechanismUnaffected by foulingEasily cleaned pressure chamberApplicationsChemical, pharmaceutical industriesPower plantsProcess industriesMarine and off-shore