Methods for Commissioning and Decommissioning of Mass Flow Meters

2026-03-05

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Mass flow meters are widely used across various industries, including process manufacturing, food analysis, analytical testing, and metrology. Thanks to their multi-variable measurement capabilities and a 50:1 adjustable range, a single ACU10L liquid flow controller/flow meter can replace the functionality of multiple devices.

Composition of the mass flow meter:

The system comprises three main components: the sensor, the transmitter, and the display unit. The sensor’s sensing element is a measuring tube, which is installed on the pipeline. The transmitter and the display unit (in the simplified version, the display unit is omitted) are installed separately near the sensor in a location that facilitates observation and maintenance. These two components are electrically connected via a dedicated multi-core shielded cable.

Methods for putting into and taking out of service mass flow meters:

A. Before putting the mass flowmeter into operation, check whether its installation meets the requirements, whether the pipelines have been thoroughly cleaned by purging, and whether the pressure test has been completed.
B. After preheating with power for 30 minutes, start the fluid flow until the sensor temperature equals the operating temperature of the fluid. Then, close the downstream valve, ensure there are no leaks, and confirm that the pipe is fully filled before zeroing the flowmeter.
C. Open the upstream and downstream valves, close the bypass valve, and put the flowmeter into operation.
D. When the flowmeter is shut down, for media that tend to form scale, the drain valve should be opened to completely empty the flowmeter of the medium. For media that tend to solidify, the medium should be drained completely and then flushed with low-pressure steam or plant air to ensure that no medium remains in the measuring tube.

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