Instructions for using soap film flowmeter | Calibration method for gas glass tube float flowmeter

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There is a sentence in the instructions for using GBL-102B soap film flowmeter that I would like to know the measurement in these two situations ★ Microcomputer program control, automatic data processing, capable of displaying complete information such as air pressure, temperature, volume, time, flow rate (including volume flow rate and mass flow rate), upper and lower sensor status, etc. ★ Fault self check, can simultaneously measure the light flux of upper and lower sensors, and users can adjust the resistance value of the internal potentiometer to achieve optimal sensitivity. ★ Real time monitoring of battery power and display of instrument power real-time indication charging information. ★ It integrates the Qinliang sensor, soap film tube, and circuit system, with small size, light weight, and easy portability. ★ Measurement accuracy: △ Q ＜ ± 1% ★ Repeatability: ＜ 0.5% ★ Flow accuracy: 0.1ml/min ★ Time accuracy: 0.1S (internal calculation accuracy up to 0.01S). ★ Extreme range: 0.1ml/min~100ml/min ★ Nominal range: 0.2ml/min~60ml/min ★ Equipped with a rechargeable battery with a nominal value of 4.8V/700mA/h, standby for more than 24 hours after fully charged, charging times>500 times ★ External 9V DC power supply, when the battery is exhausted, this power supply can be inserted from the back panel of the flowmeter for replacement use, and the battery can be charged through the internal charging circuit. After charging, the instrument automatically enters the float charging state and is fully charged in about 8 hours. ★ Implement energy-saving concept, stop operation within 1 minute, turn off the backlight of the display screen, and automatically shut down if there is no operation within 5 minutes, achieving energy-saving management.

2. How to use soap film flowmeter

1. Pour soap water into the latex droplet head at the bottom. 2. Connect the detector outlet Songmo Chi and the soap foam flowmeter bottom inlet with a code grip fine rubber tube. 3. Squeeze the latex droplet head to produce a soap film, and measure the time required for the soap film to flow through a certain volume. 4. Divide the volume by time. If it is an electronic soap film flow meter, it is convenient and automatically measured and calculated.

3. Calibration method for gas glass tube float flowmeter

Gas glass tube float flow meter There are three main methods for calibrating the disturbance wheel gauge, which should follow the "JJG 257-2007 Float Flow Meter Wu Ying Calibration Regulations". 1. Volume method bell jar gas flow standard device: can choose exhaust method or intake method. The exhaust method involves the discharge of gas from a gas device into a flow meter, while the intake method involves the flow of gas from a gas source through a flow meter into the gas device. Measure the gas volume hysteresis and synchronization time of the gas discharge (inflow) device, as well as the gas pressure and temperature inside the gas device and at the flow meter, and calculate the actual flow rate of the flow meter in the standard (scale) state according to the corresponding formula. Soap film gas flow standard device: The gas flowing out from a stable gas source is adjusted to a certain flow rate by a float flowmeter through a flow control valve. It enters the soap film tube through the inlet at the lower end of the soap film tube, squeezes the rubber ball (or uses other methods) to produce soap film. Due to the pressure of the inlet, t

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