HOW TO CHECK FLOW ELEMENT, FLOW METER AND VORTEX METER

Ensure that surfaces are smooth and perfectly flat without scratching or bowing.
The flow element shall be ensured that its data and material specification stamped on the data plate or tab handle agree with the specification.
Where applicable, drain or vent holes shall be correctly positioned.
The upstream and downstream edges of the orifice plate shall be checked to ensure there are no wire edges or burrs.
The orifice and plate thickness shall be checked by micrometer/vernier caliper. Orifice bore shall be measured in four positions to ensure circularity. Calculate Beta=d/D ratio, where d=orifice diameter or bore diameter and D=pipe internal diameter and verify with specification sheet and stamping on orifice plate.

Visual checking shall be carried out to ensure that the instrument has no damage. Tag number, size of the flange, and material shall conform to respective data sheet.
For flow meters like turbine, positive displacement (P.D.) and coriolis, parameter input and/or configuration work shall be confirmed by connecting power supply to the instrument and record the parameters as per approved form.
HART communicator shall be used for configuration check & testing.
Flow elements such as magnetic flow meters, etc., which are not usually tested in the field shall be checked for its manufacturer’s test certificates.

Visual Check and smart transmitter configuration check shall be performed.
Tag number, k-factor and design density shall be checked. Full tag no. shall be inputted into descriptor field.
HART communicator shall be used for configuration check.
After the test has been completed, the instrument shall be identified with a color code sticker.
Result shall be filed and recorded on applicable forms as per approved Form.

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