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Working Principle: -Fischer DE38 DP Transmitter uses a tough yet flexible sensing diaphragm embedded between stiffening plates and balanced by springs on either side. Linear displacement of this LVDT is proportional to the pressure difference across the diaphragm. Thus, this displacement is converted to electrical signal output. An optional output signal can be slew rate limited, spreaded, inverted and transformed non-linearly by means of a table function. Key Features: 1.Explosion proof ATEX certification with CE Ex II 3 G c EEx nA IIC T4 for DE38###R and CE Ex II 3 D c IP65 T125 for DE38###S 2.Robust design with high repeatability 3.Over pressure protection 4.Wear free non-contact LVDT sensing element, thus no maintenance 5.Signal output with possibility of various characteristic curve 6.Characteristic conversion of output via 3….30 entries table 7.Complete set-up of all parameters and print out by using optional PC programming interface EU03 8.Measuring range: 0-400 mbar to 0-1600 bar 9.Operating temperature: Ambient: -10°C to +70°C; Media:-10°C to +70°C 10.Protection class: IP65 per DIN EN 60529 11.Output: 04-20mA, 0-10 VDC 12.Display: 3 ½ digit LCD Applications areas: 1.Monitoring of compressors, filters and vacuum systems 2.Measurement of differential pressure between supply and return fuel lines in heating & cooling systems (Chillers) 3.Flow measurement – lubricants, oil, hydrocarbons, water, gases 4.Control pressure – air, gases, oil, water, lubricants 5.Level measurement- tank, container of lubricants, oils, water, liquids etc Industrial areas: 1.Cement plants 2.Nuclear plants, coal or gas fired power plants 3.hydro power plants 4.Manufacturing and chemical plants
Working Principle: -DE28 works on principle of movement of pressure diaphragm due to pressure or differential pressure applied on either side. Fischer DE28 has NBR or Viton diaphragm, thus offering continuous, repetitive high performance. The applied pressure create unbalanced force on the springs, which keep moving until new equilibrium reached. The centre mounted tappet transfers the motion of diaphragm system to core of inductive displacement transducer. Therefore, subsequent converter circuit converts this displacement into electrical output signals. Key Features: 1.Robust design with high repeatability of switching contacts 2.Over pressure protection 3.Short circuit protection 4.Maintenance free due to inductive circuit movement Key Specifications: 1.Measurement range: 0-400 mbar to 0-6 bar 2.Operating temperature: Ambient: 0°C to +70°C 3.Protection class: IP54 per DIN EN 60529 4.Static operating pressure: 16 bar 5.Diaphragm: NBR or Viton 6.Measuring linearity: 7.Measuring hysteresis: 8.Operating voltage: 24 V DCAC 9.Output signal: (0) 4-20 mA or 0-10 V, linear, proportional 10.Zero adjustment with the dial 11. 1 or 2 adjustable microswitches 12.Pressure chamber: Brass 13. Pressure connection: G 18, female thread Applications areas: 1.Water pumps, lube pump monitoring 2.Pump control 3.Pipe water liquid flow monitoring 4.Air ducts monitoring Industrial areas: 1.HVAC & MEP applications 2.Cement plants 3.Hydro power plants 4.Manufacturing and chemical plants
Vinod Gogoriya(EK Engineering)
Near Vyas Public School, Purani Ginani Bikaner, Old ginani, Rajasthan
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