Rotary glass flowmeter

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1. What is the reason for the float of the glass rotor flowmeter not moving?

The core reason for the float of the glass rotor flowmeter not moving may involve the state of the medium, equipment problems, or installation factors, which need to be investigated one by one. If the medium in the pipeline stops flowing (such as pump failure or valve closure), the float will come to a standstill due to a lack of driving force. In addition, excessive viscosity of the medium will increase the resistance of the float movement, making it difficult for it to move; If the medium contains impurities or particles, it may get stuck in the gap between the float and the glass tube, directly hindering the floats movement. two The float of the flowmeter itself may get stuck due to friction between the inclined installation and the inner wall of the glass tube, or the glass tube may wear, deform, or break after long-term use, resulting in abnormal movement of the float. If the glass tube ruptures or the cone tube deforms, the float may be completely stuck. In addition, loose or damaged pointers may create the illusion that the float is actually moving but displaying no movement. three If the flowmeter is not kept in a vertical position during installation due to other factors, the float cannot move freely under the influence of gravity and friction. At the same time, certain special operating conditions (such as sudden changes in pressure and temperature) may indirectly cause float jamming. When troubleshooting, it is recommended to prioritize checking the status of the medium flow gauge base to confirm whether the pump valve is normal; Then observe whether the glass tube is clean and free of impurities, and whether the float is v

2. There is a glass rotor flowmeter with a unit of 20 ℃, 5kg/cm2, Nm3/hr. What does this mean The label "20 ℃, 5kg/cm2, Nm3/hr" on the glass rotor flowmeter indicates the following information: Measurement medium: This flowmeter is used to measure the flow rate of gases. Standard conditions: "20 ℃" in the annotation indicates a temperature of 20 degrees Celsius during measurement, and "5kg/cm2" indicates a pressure of 5 kilograms per square centimeter during measurement. These two conditions together define the standard state during measurement. Flow unit: "Nm3/hr" represents the unit of flow in standard cubic meters per hour. The N here represents Normal , and the buried bucket is the standard state, which refers to the volume of gas at a specific temperature and pressure. In this case, the standard state refers to a temperature of 20 ℃ and a pressure of 1 atmosphere. However, in practical applications, sometimes the "standard state" is defined based on specific measurement conditions, where "Nm3" bending and grinding represents the volume under that specific condition. For accurate understanding, it is recommended to refer to the specific instructions of the flowmeter or consult the manufacturer. In summary, the glass rotor flowmeter is an instrument used to measure gas flow at a temperature of 20 ℃ and a pressure of 5kg/cm2, with the flow unit being standard cubic meters per hour.

3. What is the approximate price of a rotor flowmeter?

4. Calibration methods for glass rotor flow meters

There are three main calibration methods for glass rotor flow meter

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