Membrane gas meters and Roots flow meters have small starting flow rates and wide range ratios. To ensure accurate measurement of gas usage in various situations, commercial users should use membrane gas meters or Roots flow meters.

In depth exploration of overall installation precautions for gas flow meters! The editor has listed the following 11 installation precautions for numerous customers and netizens nationwide, hoping to be helpful to everyone.

(1) Flow meters should be installed correctly and used reasonably to avoid affecting normal operation and measurement accuracy.

(2) Before installing the flowmeter, clean the rust proof oil applied to the surface with gasoline or kerosene and remove impurities from the pipeline. Install a filter at the front end of the flowmeter to prevent impurities such as rust and welding slag from entering the measuring chamber and causing the wheel to jam and stop rotating.

(3) When installing a gas flowmeter, keep the rotor axis horizontal, regardless of whether the inlet and outlet are vertical or horizontal, and keep the meter head in a horizontal position.

(4) When the gas pressure fluctuation range is large, a pressure regulator should be installed on the flowmeter to ensure measurement accuracy.

(5) The installation of flow meters should be equipped with front and rear valves and bypass pipelines to ensure that there is no need to stop the gas during maintenance.

(6) The size of the piping and fittings for the installation of gas flow meters must be appropriate, and the flow meter body must not be subjected to abnormal external forces.

(7) Before operating the flowmeter, inject lubricating oil from the oil injection port to the oil mark line. When adding or changing oil regularly according to the operating conditions, the front and rear valves of the flowmeter must be closed to release the gas pressure inside the flowmeter.

(8) When the flowmeter is put into operation, all valves should be slowly opened and closed to prevent sudden rotation, especially during pipeline pressure testing, pipeline and meter leakage. It is strictly prohibited to suddenly release air or damage the gears inside the meter.

(9) If the pressure drop of the filter is found to increase after the gas flowmeter is put into operation for a period of time, the filter should be cleaned or the filter medium should be replaced. If the pressure drop of the flowmeter is found to increase, sudden deflation is strictly prohibited to avoid damaging the gears inside the meter.

(10) When the flowmeter is not in use for a long time, the lubricating oil should be drained, the measuring chamber should be washed clean with gasoline, coated with rust proof oil and sealed at the inlet and outlet, and placed in a dry place.

(11) Install the table at a minimum distance of 0.5-1.5m from the ground and maintain a certain distance from the wall for maintenance.

Standard throttling device for gas flow meters:

At present, other standard flow meters, such as turbine, electromagnetic, vortex street, mass, etc., do not have the above three characteristics, and therefore do not have the two major usage characteristics. In recent years, due to breakthroughs in electronic technology, computer technology, new materials, and new processes, new types of flow meters have made significant progress. In the fierce competition in the market, standard throttling flow meters have been continuously declining. The disadvantages of such flow meters have become the focus of people's evaluation, such as low measurement accuracy, narrow range, high pressure loss, harsh installation conditions, and multiple faults, which make standard throttling flow meters seem to be at risk of being marginalized. In response to the above shortcomings, technicians have made long-term improvements and innovations, and with the breakthrough progress of secondary instruments, have revitalized the performance of the entire set of standard throttling flow meters, with a range ratio of 10:1 or wider; As a standard throttling device, gas flow meters have the most diverse and comprehensive standards and specifications among all flow meters.