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General Instrument products are made with fine precision, latest automation, and by qualified professionals. They are tested and certified as per industry standards' organizations. Our products are pre-approved on most large company procurements world-wide.

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Chemical/Diaphragm Seal Unit


A diaphragm seal is a device in which a flexible membrane (diaphragm seals and isolates the measuring instrument from the process medium The instrument side of the diaphragm is filled with appropriate fluid. T pressure exerted by the process fluid on the Diaphragm is hydraulically transmitted through the seal fluid to the pressure sensing element. Diaphragm seal protects the pressure sensor from the harmful and hazardous effect the process fluid. 


• Visual Inspection

• Dimensional Verification

• Accuracy Test

• Hysteresis Test

• Leak Test

• Influence Of Mounting Position

• Degree of Protection

• Effect of Mechanical Vibration


•  Effect of Mechanical Shock

•  Endurance Test With Steady Pressure

•  Endurance Test With Over Pressure

•  Endurance Test with Cyclic Pressure

•  Safety Blow-out Test

•  Thermal Stability Test at Rated

•  Temperature effect Test

•  Energy release Test 


Pharmaceutical Oil Exploration/Refineries/Petrochemicals Chemicals Pulp & Paper Power Generation Metallurgy Cement Synthectic Fiber Fertilizer Instrument Manufacturers Original Equipments Manufacturers



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