Solution for pointer jamming of dilute hydrochloric acid flowmeter | metal tube float flowmeter | Baoji water injection flowmeter manufacturer

『Dilute hydrochloric acid flowmeter』Related information(v cone flow meter|rotary gas meter|gallon meter|gear meter|metal tube rotameter|glass tube rotameter|nutating disk meter|transit time ultrasonic flow meter|wedge flow meter|pd meters|hydraulic flow meter|ultrasonic water flow meter|water flow meter|air flow meter|magnetic water flow meter|oxygen flow meter|gas flow meter|argon flow meter|air velocity meter|gasoline flow meter|fuel flow meter|ultrasonic water meter|digital water meter|nitrogen flow meter|solid flow meter|Oxygen tank flow meter|digital water flow meter|diesel fuel flow meter|steam flow meter|02 flow meter|compressed air flow meter|oil flow meter|liquid flow meter)

1. What is the problem that the instantaneous flow rate of an electromagnetic flowmeter sometimes drops to zero during normal operation?

The occasional return to zero of the instantaneous flow rate of an electromagnetic flowmeter is usually caused by signal interference, empty pipe status, or electrode scaling, and requires targeted detection and troubleshooting. 1 Common fault causes and troubleshooting direction: Signal transmission problems - Cable looseness or damage: Check if the connecting cable between the sensor and the converter is tight, if the shielding layer is intact - Poor grounding: Measure which grounding resistance should be less than 4 Ω (according to JB/T 9248-2015 standard) to avoid abnormal fluid state shared with other equipment - Empty/unfilled pipe: Confirm that the pipeline is completely filled with fluid, install the position to avoid high point gas accumulation - Bubble interference: Installing the flowmeter vertically can reduce the influence of bubbles, and install a gas eliminator if necessary. Sensor component failure - Electrode scaling/corrosion: Clean the electrode (recommended to soak in 5-10% dilute hydrochloric acid, pay attention to safety protection) - Lining damage: Check if the PTFE/rubber lining is peeled off (measure electrode insulation with a multimeter) The resistance should be greater than 100M Ω On site diagnostic steps: ① Xun Peng simulation signal test: Use a signal generator to input a 50Hz standard square wave and check if the converter output is normal. ② Empty tube calibration: After emptying the fluid, check the zero point reading, and the deviation should be less than 1% of the upper limit of the flow rate. ③ Electrode impedance measurement: Measure the r

esistance between the electrodes in the power-off state, and the normal value is in the range of 5-50k Ω (refer to the model manual for details) Protective improvement measures - Installation requirements: Ensure that the front straight pipe section is ≥ 5DN and the rear lead Chang code straight pipe section is ≥ 2DN (DN is the pipe diameter) - Parameter setting: appropriately reduce the filtering time constant (usually set to 1-3 seconds), but avoid excessive sensitivity - Regular maintenance: check the electrode impedance and lining thickness every quarter, and perform online calibration every year. Note: If there is intermittent zeroing accompanied by output fluctuations, prioritize troubleshooting frequency conversion equipment interference (it is recommended to maintain a distance of ≥ 3 meters from the frequency converter), and install magnetic ring filters if necessary.

2. What kind of electromagnetic flowmeter is used for measuring acidity and alkalinity, and must be acid and alkali resistant to use?

It is necessary to check the specific composition of the medium on the fiber wheel. If possible, an on-site investigation can be conducted to ensure safety during use. Acid and alkali are harmful to the body. Improper selection of flow meters not only affects their service life but also brings trouble to maintenance.. The lining of the electromagnetic flowmeter can be made of PO material. In addition to strong oxidizing acids such as concentrated nitric acid, fuming sulfuric acid, and chlorosulfonic acid, it can withstand most organic and inorganic acids, bases, and salts, and has good resistance to stress corrosion. At 70C, it can withstand nitric acid, formic acid, acetic acid below 10%, hydroc

Solution for pointer jamming of dilute hydrochloric acid flowmeter | metal tube float flowmeter

1. What is the problem that the instantaneous flow rate of an electromagnetic flowmeter sometimes drops to zero during normal operation?

2. What kind of electromagnetic flowmeter is used for measuring acidity and alkalinity, and must be acid and alkali resistant to use?

『SILVER Official Website SERVICE』