3、 Xiamen JingchuanJCMFTechnical parameters of quality flowmeter manufacturer：
Product parameters: Tested medium: liquid, gas
Measuring diameter: 1mm~500mm
Measurement items: mass flow rate, density, temperature, volumetric flow rate,% concentration
Density measurement range: 0.2g/cm3~2.5g/cm3
Medium temperature: -200 ℃~+350 ℃
Flow measurement error: Liquid 0.15% R+Cz, 0.2% R+Cz, gas 0.5% R+Cz, 1.0% R+Cz
Density measurement error: 0.002g/cm3
Temperature measurement error: ≤ 1 ℃
Signal format: 4-20mA, O~10KHz, RS485, Hart
Power supply: 24VDC
Measurement tube material: 304, 316, can also be provided through negotiation according to user requirements
Explosion proof grade: ExiaICT4, ExdIICT4
Shell protection level: IP65, IP67
Flange standards: National GB/T series standards, and can also be processed according to user requirements.
4Typical applications of Xiamen Jingchuan JCMF quality flowmeter manufacturer:Typical applications
Gases: air, hydrogen, natural gas, nitrogen, liquefied petroleum gas, hydrogen peroxide, etc.
Liquids: heavy oil, paraffin, asphalt, sulfuric acid, edible oil, residual oil, acetone, diesel oil, mine water, detergent, soy sauce, gasoline, silicone oil, syrup, solvent, perfume, sea water, aviation kerosene, soap ketone water, glucose, vegetable acid, brine, paste, ink, cooling agent, ethylene glycol, mineral oil, liquid sugar, hydrochloric acid, automotive paint, resin, butter, vegetable oil, liquid oxygen, shampoo, toothpaste, gel, fuel, milk, bleaching agent, conditioner, soda, additives, cleaning agent, alkaline, ammonia, marine oil, chemical reagent, kerosene, glycerin, dye, water, nitric acid, High boiling point organic solution, lard, alcohol, oil, ethylene, polypropylene, methylbenzene, etc.
Steam type: superheated steam, saturated steam
5、 Xiamen JingchuanJCMFBasic characteristics of quality flowmeter manufacturers:*. Directly measure the mass flow rate of fluid inside the pipeline
High measurement accuracy and good repeatability, capable of directly measuring fluid mass flow rate over a large range The measurement accuracy is high, and the mass flow measurement accuracy of this flowmeter is 0.2 level
*. Stable and reliable work
There are no obstacles or moving parts inside the fluid measuring tube, so it has high reliability and long service life
*. Adaptive fluid medium surface width
In addition to uniformly viscous fluids, it can also measure high viscosity fluids such as honey and oil slurry; Not only can it measure the fluid parameters of a single solution, but it can also measure multiphase flow; Whether the medium is laminar or turbulent, it does not affect its measurement accuracy.
*. Wide range of application environments
Suitable for industries such as petrochemicals, chemistry, metallurgy, pharmaceuticals, papermaking, food, energy, and environmental protection, it has been widely used in process detection and control, as well as trade handover measurement,
*. Multiple real-time online measurement and control functions
In addition to mass flow rate, it can also directly measure the density and temperature of fluids. An intelligent flow transmitter that provides display and control functions for multiple parameters is a multifunctional flow measurement and control instrument.
*Good scalability
The company can design and manufacture quality flow meters with special specifications, models, and functions according to user needs; Remote monitoring operations can also be performed.
6、 Xiamen JingchuanJCMFQuality flowmeter manufacturer model description:
7、 Xiamen JingchuanJCMFInstallation requirements for quality flow meter manufacturers
1. Installation of Quality Flow Meter
To isolate the impact of pipeline vibration on instruments, sometimes a flexible pipe is used to connect the sensor to the pipeline, and a rigid straight pipe with supporting components fixed between the flexible pipe and the sensor is also required. When installing and designing, try to ensure a long service life. To remove solid objects and mixed gases that cause premature wear and measurement errors, protective devices such as filters or gas separators should be installed upstream of the sensor according to fluid and pipeline conditions. If you want to calibrate instruments online on site, you should consider the drainage connection port and valve, as well as the corresponding space.
a、 Installation posture and position of flow sensor
The residual solids, scaling, trapped gas, etc. in the flow sensor measuring pipe will affect the measurement accuracy. Generally speaking, it is more ideal to install it in a vertical pipeline that flows from bottom to top; But for non straight measuring tubes, is the Coriolis mass flowmeter installed on a vertical or horizontal pipe. It depends on the vibration condition of the pipeline and the application conditions. The installation position must be filled with liquid inside the measuring tube. For example, if the fluid flows through a Coriolis mass flowmeter on a horizontal pipeline and is directly placed in a container without back pressure, the measuring tube often cannot be filled, which will cause the output signal to fluctuate violently.
b、 Installation of globe valve and control valve
To ensure that there is no flow during zero adjustment, stop valves are installed upstream and downstream of the mass flow meter to ensure no leakage. The control valve should be installed downstream of the Coriolis mass flowmeter, and the mass flowmeter should maintain the highest possible static pressure to prevent cavitation and flash evaporation (fIashing).
c、 Pulsation and vibration
In order to prevent the occurrence of mechanical vibrations during the process and external factors from affecting the Coriolis mass flowmeter, we have inquired with our factory about the resonance frequency range of the provided Coriolis mass flowmeter to determine whether the on-site pulsation or vibration frequency is close to the resonance frequency of the Coriolis mass flowmeter. You can also provide on-site vibration condition consultation to our factory to see if the following measures need to be taken, such as: 1) setting pulsation attenuators, 2) setting vibration attenuators or flexible connecting pipes, 3) special clamping and fixing equipment for flow sensors, and so on. d、 Prevent mutual influence between mass flow meters
Two mass flow meters of the same model are installed in series, or multiple mass flow meters are installed in parallel (or parallel) close to each other, especially when installed on the same support platform. The vibration of the measuring tube will cause interference between the mass flow meters, resulting in abnormal vibration, and in severe cases, the meters may not work. Preventive measures should be taken during installation, such as:; Propose to our factory to stagger the resonance frequency values of the proximity instruments; Open the distance between the flow sensors, do not set them on the same rack, and set up independent support racks; Installation of flow sensors in opposite directions; Methods such as setting up anti vibration materials for isolation between flow sensors.
e、 Pipeline stress and distortion
When tightening the bolts connecting the flange of the mass flow meter to the flange of the pipeline, they should be evenly tightened to avoid causing stress on the mass flow meter (such as due to the non parallel planes of the two flanges of the pipeline). If a short pipe of the same length as the Coriolis mass flowmeter is pre connected when laying the pipeline, it can prevent stress caused by poor pipe layout. During use, due to changes in process pressure and temperature, Coriolis mass flow meters are subjected to axial forces or bending/twisting forces in the pipeline. Affects measurement performance, necessary fixing brackets should be provided
f、 The use of highly abrasive slurry
It is best to use a straight and single tube type for measuring highly abrasive slurries, and the measuring tube should be in a vertical position to avoid uneven wear on the tube wall and shorten its service life. However, the thinning of the pipe wall thickness will reduce the rigidity of the measuring pipe and change the flow measurement value. Therefore, regular inspections should be carried out during operation in such places to confirm the service life. Scaling or drift deposition on the inner wall structure of the measuring tube can also affect measurement accuracy, so regular cleaning is necessary.
Installation diagram of quality flowmeter
Horizontal pipeline: with the main body facing downwards, measuring liquid
Horizontal pipeline: with the main body facing upwards, self emptying, measuring the slurry containing solids
Vertical pipeline: flag type installation, self emptying, measuring liquids or slurries, liquids must flow from bottom to top
8、 Xiamen JingchuanJCMFTroubleshooting of Quality Flow Meter
In general, mass flow meters do not malfunction, and it is not a big deal if they do. Careful analysis of the cause can solve the problem, such as whether the working conditions have changed, whether there is air leakage, whether they have just been calibrated and used, etc. Below are a few types of malfunctions and their solutions:
1. Hardware malfunction
If there is a large error, the integrator does not light up or increase in value, or there are blank spaces on the display, the reasons are:
a. Improper installation can directly lead to zero drift of the flow meter, such as installing the mass flow meter close to the pump outlet, insufficient sensor support strength, improper welding of the connecting flange generating stress signals, and electromagnetic interference on the cable.
b. Wiring issues
If the monitor does not light up, check the power connection of the integrator. If the fuse is blown, confirm whether the input voltage is consistent with the nominal value of the standard voltage and whether the AC/DC form is the same. If the accumulator does not increase with the flow rate, the wiring of the accumulator should be checked. If the accumulator is equipped with forward/reverse programs, the wiring of the flow meter should be checked. Incorrect wiring of the flow meter can cause the accumulator to not increase in reverse flow.
c. Change in process medium
If the measuring medium exhibits phenomena such as gas entrapment, gasification, or two-phase flow, the transmitter will display an alarm, and in severe cases, the sensor will stop working.
d. The transmitter is malfunctioning.
e. Sensor failure.
f. Pipeline blowing problem.
2. Software issues
Before installing and using a newly calibrated flowmeter, it is important to pay attention to zero calibration under the current operating conditions. It is necessary to ensure that the flowmeter is filled with medium and the two end shut-off valves are closed before zero calibration can be performed. There are many specific methods, such as panel operation, manual operation, and using ProLink II software.
a. Zero calibration is incorrect.
b. Parameter settings are incorrect.
c. Pulse fluctuations of the power supply.
d. The I/O configuration is incorrect (be sure to pay attention to the range).
e. Operation error.
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