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Chloric acid flowmeterWhen measuring mixed phase fluids, choose a location that will not cause phase separation; When measuring two-component liquids, avoid placing them downstream where mixing is not yet uniform; When measuring chemical reaction pipelines, they should be installed downstream of the fully completed reaction section; Try to ensure that the front and rear straight pipe sections are not less than 5D and 2D respectively;
Chloric acid flowmeterIt has the following advantages:
① Electromagnetic flow meters can avoid orthogonal electromagnetic interference caused by alternating magnetic fields;
② Electromagnetic flowmeter eliminates power frequency interference caused by distributed capacitance;
③ Electromagnetic flowmeter suppresses eddy currents caused by alternating magnetic fields on the pipe wall and inside the fluid;
④ Electromagnetic flowmeter eliminates the polarization phenomenon of DC excitation
Flow range setting
Flow range refers to the upper limit flow value (full range) of flow measurement. The upper limit flow value is for the output signal and percentage display. It corresponds to the upper limit of current output, the upper limit of frequency (pulse) output, and the 100% display value. Associated with it are small signal cutoff and over limit alarm represented by percentage flow. The flow display and flow rate display of this converter are not limited by the flow range within the specified range.
Select the flow display unit in the flow range setting parameters. The instrument flow display unit includes volume flow unit: L/s、L/min、L/h、m3/S m3/Min m3/H and mass flow unit: kg/s、kg/m、kg/h、t/s、t/m、t/h， Users can select a suitable flow display unit based on process requirements and usage habits.
Attention: The instrument displays the flow rate value with 5 significant digits, and the unit with flow rate is displayed after the last digit
3.9.4.3 Automatic range switching
The converter has two optional range automatic switching functions, which can be easily used in automatic control measurement systems with a large range of day and night flow changes. The range value set under the "Flow Range Setting" menu is the first range (high range). Under the "Automatic Range Switching" menu, 1:2, 1:4, or 1:8 can be selected as the second range (low range), with the second range value being 1/2, 1/4, or 1/8 of the first range value.
Figure 5.1 shows the automatic range switching curve for a range ratio of 1:4. To ensure safe and reliable switching, there is an automatic setting with a lag characteristic of 5% to 10%. After switching the range, the PDIR (FDIR) terminal outputs a low level (0V) as the first range (high range); The terminal outputs a high level (+12V) for the second range (low range). At the same time, the upward indication on the measurement interface can indicate that the current range ratio is 1:1, 1:2, 1:4, or 1:8.
Chloric acid flowmetera kind ofChloric acid flowmeterElectromagnetic Flowmeters (EMF) are a new type of flow measurement instrument that rapidly developed in the 1950s and 1960s with the advancement of electronic technology.Chloric acid flowmeterIt is an instrument that uses the principle of electromagnetic induction to measure the flow rate of a conductive fluid based on the induced electromotive force when the fluid passes through an external magnetic field. This type of flowmeter is not affected by changes in fluid density, viscosity, temperature, pressure, and conductivity for flow measurement. The sensor induced voltage signal is linearly related to the average flow rate, resulting in high measurement accuracy. There is no obstruction in the measuring pipeline, so there is no additional pressure loss; There are no movable parts inside the measuring pipeline, so the sensor has an extremely long lifespan. Due to the fact that the induced voltage signal is formed in the middle of the entire magnetic field and is the average value on the surface of the pipeline, the sensor requires a shorter straight pipe section, with a length of 5 times the diameter of the pipeline. Multiple electrode and lining materials can meet the requirements of corrosion resistance and wear resistance. The HSBLDE converter adopts the latest international microcontroller and surface mount technology, with reliable performance, high accuracy, low power consumption, stable zero point, and convenient parameter setting. Clicking on the Chinese display LCD shows cumulative flow rate, instantaneous flow rate, flow rate percentage, etc. A bidirectional measurement system that can measure forward and reverse flow rates, using special production processes and high-quality materials,Chloric acid flowmeterEnsure that the performance of the product remains stable over a long period of time.
Chloric acid flowmeterTroubleshooting:
Whole machine zero point inspection: The measuring tube of the flow sensor is filled with liquid and has no flow, which is not feasible in many enterprises. Therefore, the zero point inspection and adjustment of the whole machine can be abandoned, but a separate zero point inspection and adjustment of the converter can be carried out instead. Technically speaking, this has practical significance only after the sensor inspection is completed and the insulation resistance of the excitation circuit and signal circuit of the sensor is ensured to be normal (both including cables), otherwise the whole machine cannot operate normally. Usually, the zero point of the converter alone is negative and the value is also very small; If its absolute value is greater than 5% of the full range, it needs to be checked first and adjusted after confirming the reason. Under normal circumstances, the difference between the zero point of the entire electromagnetic flowmeter and the zero point of the converter alone is less than 1%. There are many cases where the zero point difference value greater than 5% is caused by users performing incorrect zero adjustment operations when the pipeline valve is not properly closed.
Electromagnetic flowmeter connection cable inspection: This inspection includes checking the conductivity and insulation resistance of each core of the signal line and excitation line, and checking whether the grounding of each shielding layer is intact.
Electromagnetic flowmeter converter inspection: This inspection involves using a universal instrument and an analog signaler that matches the flowmeter model to replace the sensor and provide flow signals for zeroing and calibration. Calibration includes zero point check and adjustment, set value check, excitation current measurement, current/frequency output check, etc. It should be noted that the inspection items should be compared with the previous inspection value (or factory value) to analyze whether there are any changes or whether the changes meet the original measurement requirements.
Electromagnetic flowmeter sensor inspection: check the copper resistance of the excitation coil; Check the insulation resistance of the excitation coil; Check the electrode contact resistance; Check the polarization voltage between electrodes/liquids; Check the insulation between the signal circuit and the excitation circuit/signal circuit.
Choose a location with low vibration, especially for integrated instruments;
Chloric acid flowmeterAvoid large motors, transformers, etc. nearby to prevent electromagnetic interference;
Chloric acid flowmeterPlaces that are easy to implement separate grounding for sensors;
Try to avoid high concentrations of corrosive gases in the surrounding environment as much as possible;
Avoid direct sunlight as much as possible for conventional display and measurement of fluid flow and trade settlement
Chloric acid flowmeterDESCRIPTION
Satisfying users and achieving continuous quality improvement are the eternal pursuit goals of Power Control. Li Control ensures the normal and effective operation of the quality assurance system through a series of measures such as internal and external audits and annual management reviews. Users are concerned about quality
The requirements and feedback on product quality information are the basis and driving force for promoting the improvement of the quality assurance system. Li Control will ensure the continuous, appropriate, and effective operation of the quality assurance system by continuously improving the quality of products and the work quality of employees.
Chloric acid flowmeterIt has the following advantages:
① Electromagnetic flow meters can avoid orthogonal electromagnetic interference caused by alternating magnetic fields;
② Electromagnetic flowmeter eliminates power frequency interference caused by distributed capacitance;
③ Electromagnetic flowmeter suppresses eddy currents caused by alternating magnetic fields on the pipe wall and inside the fluid;
④ Electromagnetic flowmeter eliminates the polarization phenomenon of DC excitation
Flow range setting
Flow range refers to the upper limit flow value (full range) of flow measurement. The upper limit flow value is for the output signal and percentage display. It corresponds to the upper limit of current output, the upper limit of frequency (pulse) output, and the 100% display value. Associated with it are small signal cutoff and over limit alarm represented by percentage flow. The flow display and flow rate display of this converter are not limited by the flow range within the specified range.
Select the flow display unit in the flow range setting parameters. The instrument flow display unit includes volume flow unit: L/s、L/min、L/h、m3/S m3/Min m3/H and mass flow unit: kg/s、kg/m、kg/h、t/s、t/m、t/h， Users can select a suitable flow display unit based on process requirements and usage habits.
Attention: The instrument displays the flow rate value with 5 significant digits, and the unit with flow rate is displayed after the last digit
3.9.4.3 Automatic range switching
The converter has two optional range automatic switching functions, which can be easily used in automatic control measurement systems with a large range of day and night flow changes. The range value set under the "Flow Range Setting" menu is the first range (high range). Under the "Automatic Range Switching" menu, 1:2, 1:4, or 1:8 can be selected as the second range (low range), with the second range value being 1/2, 1/4, or 1/8 of the first range value.
Figure 5.1 shows the automatic range switching curve for a range ratio of 1:4. To ensure safe and reliable switching, there is an automatic setting with a lag characteristic of 5% to 10%. After switching the range, the PDIR (FDIR) terminal outputs a low level (0V) as the first range (high range); The terminal outputs a high level (+12V) for the second range (low range). At the same time, the upward indication on the measurement interface can indicate that the current range ratio is 1:1, 1:2, 1:4, or 1:8.
Chloric acid flowmetera kind ofChloric acid flowmeterElectromagnetic Flowmeters (EMF) are a new type of flow measurement instrument that rapidly developed in the 1950s and 1960s with the advancement of electronic technology.Chloric acid flowmeterIt is an instrument that uses the principle of electromagnetic induction to measure the flow rate of a conductive fluid based on the induced electromotive force when the fluid passes through an external magnetic field. This type of flowmeter is not affected by changes in fluid density, viscosity, temperature, pressure, and conductivity for flow measurement. The sensor induced voltage signal is linearly related to the average flow rate, resulting in high measurement accuracy. There is no obstruction in the measuring pipeline, so there is no additional pressure loss; There are no movable parts inside the measuring pipeline, so the sensor has an extremely long lifespan. Due to the fact that the induced voltage signal is formed in the middle of the entire magnetic field and is the average value on the surface of the pipeline, the sensor requires a shorter straight pipe section, with a length of 5 times the diameter of the pipeline. Multiple electrode and lining materials can meet the requirements of corrosion resistance and wear resistance. The HSBLDE converter adopts the latest international microcontroller and surface mount technology, with reliable performance, high accuracy, low power consumption, stable zero point, and convenient parameter setting. Clicking on the Chinese display LCD shows cumulative flow rate, instantaneous flow rate, flow rate percentage, etc. A bidirectional measurement system that can measure forward and reverse flow rates, using special production processes and high-quality materials,Chloric acid flowmeterEnsure that the performance of the product remains stable over a long period of time.
Chloric acid flowmeterTroubleshooting:
Whole machine zero point inspection: The measuring tube of the flow sensor is filled with liquid and has no flow, which is not feasible in many enterprises. Therefore, the zero point inspection and adjustment of the whole machine can be abandoned, but a separate zero point inspection and adjustment of the converter can be carried out instead. Technically speaking, this has practical significance only after the sensor inspection is completed and the insulation resistance of the excitation circuit and signal circuit of the sensor is ensured to be normal (both including cables), otherwise the whole machine cannot operate normally. Usually, the zero point of the converter alone is negative and the value is also very small; If its absolute value is greater than 5% of the full range, it needs to be checked first and adjusted after confirming the reason. Under normal circumstances, the difference between the zero point of the entire electromagnetic flowmeter and the zero point of the converter alone is less than 1%. There are many cases where the zero point difference value greater than 5% is caused by users performing incorrect zero adjustment operations when the pipeline valve is not properly closed.
Electromagnetic flowmeter connection cable inspection: This inspection includes checking the conductivity and insulation resistance of each core of the signal line and excitation line, and checking whether the grounding of each shielding layer is intact.
Electromagnetic flowmeter converter inspection: This inspection involves using a universal instrument and an analog signaler that matches the flowmeter model to replace the sensor and provide flow signals for zeroing and calibration. Calibration includes zero point check and adjustment, set value check, excitation current measurement, current/frequency output check, etc. It should be noted that the inspection items should be compared with the previous inspection value (or factory value) to analyze whether there are any changes or whether the changes meet the original measurement requirements.
Electromagnetic flowmeter sensor inspection: check the copper resistance of the excitation coil; Check the insulation resistance of the excitation coil; Check the electrode contact resistance; Check the polarization voltage between electrodes/liquids; Check the insulation between the signal circuit and the excitation circuit/signal circuit.
Choose a location with low vibration, especially for integrated instruments;
Chloric acid flowmeterAvoid large motors, transformers, etc. nearby to prevent electromagnetic interference;
Chloric acid flowmeterPlaces that are easy to implement separate grounding for sensors;
Try to avoid high concentrations of corrosive gases in the surrounding environment as much as possible;
Avoid direct sunlight as much as possible for conventional display and measurement of fluid flow and trade settlement
Chloric acid flowmeterDESCRIPTION
| Product model and identification | describe | |||||||||
| LD— | Electromagnetic Flowmeter | |||||||||
| CLASSIFICATION | B | Ordinary split type | ||||||||
| E | Intelligent Integrated System | |||||||||
| Q | Diving type | |||||||||
| orifice | -mm | Pipeline diameter | ||||||||
| Electrode material | M | M02Ti | ||||||||
| T | Ti (titanium) | |||||||||
| D | Ta (tantalum) | |||||||||
| H | Hastelloy alloy | |||||||||
| P | Pt (Platinum) | |||||||||
| N | Ni (nickel) | |||||||||
| Output | 1 | pulse | ||||||||
| 2 | 4-20mADC, two-wire system | |||||||||
| 3 | On site LCD display | |||||||||
| Lining material | X | rubber | ||||||||
| F | PTFE | |||||||||
| P | polyethylene | |||||||||
| J | polyurethane | |||||||||
| communication | 0 | No communication | ||||||||
| 1 | RS485 | |||||||||
| 2 | RS232 | |||||||||
| 3 | Modbus | |||||||||
| 4 | Hart | |||||||||
| ground ring | 0 | No grounding ring | ||||||||
| 1 | There is a grounding ring | |||||||||
| 2 | There is a grounding electrode | |||||||||
| professional level | 0 | lack of professionalism | ||||||||
| 1 | Intrinsic safety major, ia Ⅱ CT6 | |||||||||
| Maximum traffic limit | -m3/h | Upper Range Limit | ||||||||
Satisfying users and achieving continuous quality improvement are the eternal pursuit goals of Power Control. Li Control ensures the normal and effective operation of the quality assurance system through a series of measures such as internal and external audits and annual management reviews. Users are concerned about quality
The requirements and feedback on product quality information are the basis and driving force for promoting the improvement of the quality assurance system. Li Control will ensure the continuous, appropriate, and effective operation of the quality assurance system by continuously improving the quality of products and the work quality of employees.
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