There are two chlorination tonners both are connected to two pressure swithes and the pressure switch is connected to SOV which operates the valve to changeover the tonner selection i.e if pressure one tonner goes low the other tonner should come in line if it is inautomatic selection design a circuit using relays ?

0 Answers  

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How comparison of objects is done in PHP5?

1 Answers   TIS,

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what is the Difference betwee the Hart and smart series Pressure transmitter

1 Answers   HPCL Mittal Pipelines Limited HMEL, Kastech Instrumentation,

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what is span adjusment of transmitter? what is the function of positioner/

2 Answers   Kent,

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how to check earthing,what is minum ohms for proper earthing

0 Answers  

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pt range is -45 psi to 45 psi.friends can you give answer with calculation and with linerity scale like 0%,25%,50%,75%& 100%?

1 Answers   WB,

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If a differential pressure transmitter is calibrated for 0~2500 mmH2o and transmits a 4~20mA dc signal. The transmitter is placed across an orifice plate which is sized to create 2500 mmH2o differential at 5000m3/Hr a) what is the flow rate when the transmitter signal is 13.0mA DC? b) what is the signal output of the transmitter when flow rate is 2500 m3/Hr ?

5 Answers  

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Where should we terminate the shield and why?

3 Answers   OPaL,

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How many interlocks at turbine? Plz explain briefly

0 Answers   MRPL Mangalore Refinery and Petrochemicals Limited,

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What is the difference between working pressure and calibration pressure of a control valve

0 Answers  

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admittance level sensor meaning?

2 Answers   CGL,

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what is load line in control valve?

3 Answers   Boral, Qatar Petroleums,

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