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1. Accuracy of LZB-25 gas float flowmeter
The accuracy of LZB-25 gas float flowmeter needs to be distinguished according to specific models, and the accuracy level of different categories varies greatly Ordinary LZB-25 glass rotor flowmeter: The accuracy level of this conventional model is 1.5
2. LZB-25F corrosion-resistant glass rotor flowmeter: This model is designed for corrosive gases, with an accuracy level of 2.5
3. LZ-25 metal tube float flowmeter: The accuracy of this model is divided into two levels, with a standard accuracy level of 1.5 and a special customized accuracy level of up to 1.0.
2. Use and installation of glass rotor flowmeter
The installation and use of glass rotor flowmeter should follow the following specifications to ensure measurement accuracy and extend equipment life:
1. Installation specifications: Reserve maintenance space. When installing, ensure that there is sufficient space around the flowmeter for subsequent replacement of parts or maintenance.
. When necessary, install a bypass pipe to ensure that the flow meter does not need to be disassembled during inspection, repair, or cleaning of the pipeline. Pipeline cleaning and vertical installation: Newly installed pipelines must be thoroughly flushed and cleaned to avoid impurities entering the flowmeter. The flowmeter must be installed vertically to ensure that the float can rise and fall freely and avoid measurement errors caused by tilting. The fixed fittings connecting the flowmeter must be firmly fixed to prevent stress from being transmitted to the cone tube, which may cause deformation or rupture. If there is backflow or water hammer in the pipeline, a one-way check valve should be in
2. Use standard opening and closing operation sequence to start: slowly open the upstream valve to full open first, and then use the downstream regulating valve to control the flow.
. Stop: Close the upstream valve first, and then close the downstream regulating valve to avoid damage to the cone tube caused by sudden pressure changes. The reading method is to read the indication after the float is stable, and the reading position is at the maximum diameter of the float (i.e., at the point where it is aligned with the scale line of the cone tube). Avoid sudden changes in temperature and pressure during use to prevent rapid changes in fluid temperature or pressure, otherwise it may break through the cone tube and cause safety hazards. Regularly clean if the cone tube or float is contaminated, it should be cleaned in a timely manner to avoid affecting the accuracy of readings