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what is my calibration range

11/01/2009 9:06 AM

hi frnds

we have installed one pad type dp transmitter in a closed vessel having 250 mmhg of vaccume pressure in that vessel. and our lp side tapping is 1500 mm hight from the hp tapping as well as transmitter.........and specific gravity of liquid having in that tank is 1.25 so wht is my calibration range plz clear me he zero suppression and zero elevation.........and our transmitter is smart and plz send the information to below mentioned email id
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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#1

Re: what is my calibration range

11/02/2009 4:20 AM

<...calibration range...>

-400mm to +2000mm H2O should cover it.

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srzambre
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Join Date: Oct 2007
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#2

Re: what is my calibration range

11/03/2009 12:12 AM

Assuming that you have PADS ( Remote Diaphragm with Capillary) on both HP & LP side of Transmitter, after installation with empty tank Calibrate the Transmitter for ZERO, then your range should be 1500 x 1.25 = 1875 mm H2O

LRV = 0 mmH2O & URV = 1875 mmH2O

250 mmHG Vacuum will be cancelled automatically as it is acting on both HP & LP sides of Transmitter.

Regards,

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Previous in Forum: Negative Voltage in Eddy Current Transducers?   Next in Forum: Mounting Styles for Temperature Transmitters
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