Problems in using balance flowmeters for measuring high-temperature media
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Condition 1: Medium is coker dry gas, operating pressure is 3.12 MPa (G), and operating temperature is 350°C. Condition 2: Use a balanced flow meter together with a root valve, a three-valve assembly, and a transmitter to measure the medium flow rate, with all components being delivered as a single unit. Condition 3: Double-flange pressure tapping is not considered. Question: As per the customer’s requirements, conditions 1, 2, and 3 all need to be met; therefore, only conventional differential pressure transmitters can be used. To prevent the differential pressure transmitter from being damaged by heat, is it possible to use an annular buffer tube?
No problem at all. Are you even worried that it might freeze in winter?
A needle valve can be added to facilitate routine maintenance
Straight pipe, without insulation; transmitter installed at the top for natural cooling
Could you recommend manufacturers of balanced flow meters?
Yes, natural cooling can be achieved using an annular buffer tube; the transmitter is installed at the top to provide insulation.
A balanced flow meter is nothing but a porous orifice plate; using an annular buffer tube works just fine