Question { 15800 }

Whether the DP transmitter can be utilised in the medium of
Vaccum for the measurement of Level?

Answer

Hi Friends,

We have Condensate storage tank which stores condensate water from Turbine Exhaust through air cooled condenser. Everything is in closed condition and we will maintain vaccume through out closed loop and about -0.9Kg/Cm2 pressure we will maintain in the tank. For tank level measurement we are using Float type transmitter which works on Archemedese Buoyancy principle. I Have doubt that whether we can use DP transmitter for the same service. Please rectify my doubt.

Question { 14992 }

how to calculate flow by dp transmitter?

Answer

Flow = k. sqrt of dp.

K= Max flow through flow element / Maximum Dp created by
flow element

Question { 8995 }

why we use 250 ohms across HART CALIBRATOR DURING
CALIBRATION OF TRANSMITTER

Answer

Loop Impedance required for communicator will be minimum
250ohms