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1. Do thermal flow meters need to be tested?
Thermal flow meters need to be regularly tested, which is a key link to ensure accurate measurement and fair settlement in the heating system.. 1. The necessity of detecting flow meters in heating systems is directly related to heat cost settlement, and its measurement accuracy is affected by multiple factors such as fluid properties, pipeline vibration, and equipment aging. Regular testing can detect deviations in a timely manner and avoid measurement disputes. According to the Measurement Law of the Peoples Republic of China, mandatory calibration measuring instruments used for trade settlement must be regularly sent for inspection. The testing organization and cycle should be carried out by a legal metrological calibration organization (such as local metrology institutes) or authorized technical institutions. Ordinary heat users are usually sent for inspection by the heating company. The calibration cycle for common ultrasonic and electromagnetic flow meters generally does not exceed 2 years, and should be carried out according to the prescribed cycle in the calibration certificate. 3. Main testing contents: • Indication error detection: Testing the deviation between the actual value and the displayed value at different flow points • Repeatability check: Consistency of multiple measurement data at the same flow point • Sealing test: Ensuring no leakage affects the measurement • Verification of temperature/pressure compensation function (for heat meters). 4 If users have doubts about the measurement data, they can apply for a review to the heating unit and, if necessary, jointly send it to a third-party organization for testing. Disassembling the flowmeter wi
2. Installing a flow meter on the underfloor heating water separator allows for a clear view of the flow rate, making it difficult to keep the underfloor heating warm.
Installing a flow meter on the underfloor heating water separator can achieve precise adjustment by quantifying the flow rate, effectively solving the problem of uneven temperature in various spaces and improving the overall heating effect of underfloor heating.
. The limitations of habitual regulation methods: Most households rely on solenoid valves or manual valves for underfloor heating, but lack quantitative data support. Users can only adjust the flow rate of each branch "by feeling" by rotating the valve circle, and cannot accurately control the flow rate of each branch. For example, the length of underfloor heating pipelines laid by developers may vary. If the inlet flow rate of each branch is the same, areas with shorter pipelines may experience insufficient heat dissipation due to fast water flow, while areas with longer pipelines may experience insufficient heating due to high resistance and insufficient flow, ultimately resulting in uneven indoor temperature. The installation position of the flow meter can be selected as either the inlet end or the return end, but the return end is the preferred choice. The reason is as follows: a defect in the installation of the inlet end: it can only ensure that the inlet flow of each branch is consistent, but cannot monitor the return flow. If a certain branch has a low return water flow due to high pipeline resistance, the heat cannot circulate effectively, and the area w
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