Answer / rajesh.

Compare to SAAB tank gauge measurement, DP level transmitter reading will not accurate. As the crude is viscous and it will choke up impulse tubing. It is better to install diaphragm capillary seal type Dp level transmitter. To calibrate Tx, Isolate primary valve of Hp and Lp tapping. depressurize Tx from manifold. check zero. measure the mmwc of tank and apply the value as per HP calibration.

Answer / prabhu

DP transmitter can be calibrated by fixing the HP tapping on the roof and make the LP as open. now measure the mm/wc of the tank and apply the value as HP for calibration.

installation process of orifice,a question asked for confusion creation in interview by BARC 1.if orifice is tightly fitted with pipe ,it will act like venturi 2.if orifice is left hanging in between liquid it will not create the pressure difference exactly,

0 Answers   BARC,

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I am a instrument technician. recently i attend interview and face one of question for DP transmitter ,the client asking about the calibration of DP transmitter ,am answer the calibration procedure, they will ask one more question. why open LP side in atmosphere? i did not answer that question. so please help me and explain the particular question. Dear firends waiting for your valuable replay

3 Answers   Qatar Petroleums, Samsung,

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How many types of sensor

0 Answers   Petro Rabigh,

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what is hart communicater? can u give brief explanation about this issue?

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3 Answers   ICI Pakistan,

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1 Answers  

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1 Answers   Ramco,

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i have a dp tx range is 5000mmwc. in which calibration i use in a open tank.1.5*3.5*2.5 mtr.for level msmnt. what is the calculation.

2 Answers   Bajaj Hindusthan,

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