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Sichuan Kailisen Instrument Manufacturing Co., Ltd
tuning fork density meter
NegotiableUpdate on 05/20
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Overview
A tuning fork densitometer (also known as an online density transmitter) is a device used for continuous online measurement of liquid concentration and density, which can be directly used in industrial production processes. The intelligent online density meter adopts the principle of differential pressure density meter, which can calculate the density value based on the differential pressure value of the medium at a certain vertical distance, and automatically perform temperature compensation. It has high accuracy, good reliability, and is easy to install and use. Manufacturer of tuning fork type online density meter
Product Details
The online densitometer developed by Sichuan Kailisen Instrument Manufacturing Co., Ltd. can be divided into various installation forms such as insertion densitometer, side mounted densitometer, pipeline densitometer, and bent tube densitometer. The regular material is 316L, and other special materials are optional, such as tantalum, HC， Monel, nickel, titanium, tetrafluoroethylene and other anti-corrosion materials.
Introduction to KDM260 Carrier Density Meter
KDM260 is listed inAnti corrosion online density meter measurementisSichuan Kailisen Instrument Manufacturing Co., LtdA high-precision density based on static pressure principle launched(Concentration) measuring instrument.
KDM260 seriesAnti corrosion online density meter measurementIt is a continuous online instrument for measuring liquid density, mainly used for industrial process automation control. Generate corresponding 4-20mA analog signals based on changes in medium density, and convert them into digital signals for remote calibration and monitoring. According to different industrial processes, density can be expressed as Brix degree, GL degree, Baume degree, Plato degree, and concentration percentage,wisdom
KDM260Series online density(Concentration) sensors can be widely used in industrial sites such as pipelines, open or closed storage tanks, and can continuously and real-time measure the liquid density of pipelines or tanks online.
Characteristics of KDM260 Kelly Sen Density Meter：
*The engineering units that can be used for direct density or concentration readings include:
*Suitable for flowing or stationary liquids
*Suitable for tank density measurement
*Two wire system with 4-20mA/Hart output
*Adopting an integrated structure with no moving parts
*Standard industrial and sanitary process connections
*The converter can be optionally equipped with GPRS wireless remote transmission function
*The instrument is equipped with a built-in temperature sensor and provides temperature compensation
*Online remote verification, digital local displayManufacturer of tuning fork type online density meter
*Factory multi-point linear correction for higher accuracy
*On site recalibration: No need for standard reference sources, no need for experimental calibration, no process interruption
*The converter is compatible with three installation methods: wall mounted, embedded, and desktopManufacturer of tuning fork type online density meter
*The converter adopts a touch screen display, with a more user-friendly interface
Technical parameters of KDM260 Kelison densitometer：
|
sex |
measurement range |
Range 1: 0-1.5g/cm3Range: 2:0-2g/cm3
Range: 0-3g/cm3 |
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accuracy class |
*：±0.001 g/cm3Grade B: ± 0.005 g/cm3
Grade C: ± 0.01 g/cm3 | |
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Stability within 12 months |
0.021×10-3g/cm3 | |
|
Environmental temperature impact (every 10 ℃) |
0.003×10-3g/cm3 | |
|
Static pressure effect (1kgf/cm) |
0.001×10-3g/cm3The system error is eliminated by calibration during static pressure | |
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Power supply impact |
± 0.005% calibrated range/volt | |
|
Electromagnetic interference impact |
Design to meet IEC801 and European standards EN50081EN50082 |
|
merit |
temperature |
Pt1000(-40-3000℃) |
|
output signal |
Two wire system with 4-20mA/Hart output | |
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power supply |
Sensor power supply: 24V DC Converter power supply: 24V DC or 220V AC | |
|
instruction |
LCD local display | |
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temperature range |
Environment: -40-85 ℃ Process: -40-100 ℃
Normal operation: -40-85 ℃ | |
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startup time |
0.2 seconds | |
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humidity range |
0-*RH | |
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temperature compensation |
Automatic Pt1000 |
|
thing |
process connection |
Sanitary type: 316L SST clamp connection Industrial type: 316L SST flange connection |
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Liquid contact part |
316L、 Hastelloy and tantalum film are optional | |
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Non liquid contact part |
Filling fluid: Silicone oil (DC200/350, DC200/20, DC704) Syltherm800 or Glycerin/water | |
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structural form |
Installation method of pipeline or tank body |
Installation instructions for KDM260 Kelison densitometer:
Due to the requirements of the production process, online density meters are often installed on sites with harsh working conditionsIn order to minimize the severity of the working conditions of the density meter, it should be installed as much as possible in places with small temperature gradients and temperature changes, no impact and vibration, and no bubbles. Only by fully considering the on-site conditions can it achieve its expected accuracy indicators. Pay attention to the following items during installation:
1. The product must be installed vertically, with a perpendicularity of no more than 5 degrees to the ground (if the installation is not vertical, or if the local gravity acceleration deviates from the standard gravity acceleration, a deviation will occur, and the elimination of this deviation will be introduced later).
2. When installing on the side, the flange straight pipe section should be able to be smoothly installed.
3. After opening the cover of the electrical box, it should be tightened during reinstallation to ensure proper sealingThe O-ring is in close contact, and if not tightened, moisture will enter the electrical box, affecting the normal operation of the circuit.
4. The outer shell of the density meter must be effectively grounded.
5. The installation location should be as far away as possible from the frequency converter or high-power motor, and isolation measures should be taken if necessary, using shielded power lines.
6. After installation, adjust the air tube to zero and display the density value as 0g/cm ³. （Note: Zero adjustment is required. Please refer to the next page for detailed steps.）
7. The distance between the sensors of the direct online liquid density meter should be at least 200mm, with a diameter of 50mm. The installation size on site cannot be smaller than these dimensions. If a curved density meter is selected, please measure the flange and length dimensions that can be inserted into the pipe.
8. The liquid on site must be kept within two measuring sensors, and the distance from the flange to one sensor is optional.
9. During pipeline installation, it is necessary to allow liquid to enter from below the sensor or from above the sensor, and not from the middle. When installing pipelines for liquid flow, at least 30CM of liquid buffer distance should be left at the valve or elbow part of the pipeline.
10. The red flange matching part of the installation diagram is provided for installation by the user. If a matching flange is needed, please specify when placing an order.
11. Equipped with a 24V DC output 4-20mA signal, if a secondary meter is required, connect the 24V "+" to the "+" pole behind the density meter, connect the current signal "+" to the "-" pole of the density meter, and short-circuit the 24V "-" and current signal terminals "-" on the secondary meter.
12. If there are corrosive liquids outside the site environment, please take protective measures. If there is a risk of lightning strikes, please install grounding devices in the surrounding area.
13. When disassembling for cleaning, please ensure that the sensor diaphragm is not damaged by collision or other factors.
14. Do not use it above 5Mpa.
15. If adjusting the range requires the use of a handheld device, please contact the manufacturer for technical issues.
Common troubleshooting of KDM260 Kelison densitometer:
1. The two sensor heads are fragile parts of the densitometer, and external damage can cause damage to the densitometer. In order to protect the sensor from damage during transportation and installation, the protective cover must be removed only after installation is completed. Remember!!
2. The density meter has been adjusted to the * state when it leaves the factory. Non professionals are not allowed to adjust it arbitrarily. Professional on-site calibration method: Insert the densitometer vertically into pure water and adjust it with a handheld device that supports the HART protocol. Follow the instrument manual for specific operations.
3. When the density transmitter is found to be malfunctioning, first check if the power and ground wires are properly connected.
4. When the transmitter reading is found to be significantly different from the actual value, first check whether the membranes of the two membrane boxes have been damaged or deformed by external forces.
Wiring Instructions
The signal terminal is located in an independent compartment of the electrical box. When wiring, the meter cover on the wiring side can be unscrewed. Connect the power cord as shown in the diagram (the signal is attached to the power cord). Do not thread the signal line through a metal tube or place it in the same slot as other power lines, and do not pass near strong electrical equipment. The outer shell of the density meter is grounded. Because the transmitter is grounded through capacitive coupling, when checking the insulation resistance, the circuit inspection should use a value not greater than45VThe voltage and output current of the density meter shall not exceed30mA. DC
functionUsers can set it up through configuration softwareVariables displayed on LCD and the number of decimal places displayed. Refer to "Instrument Configuration" → "Output Characteristics" in the configuration software settings section.
LCD supports dual variable display, with adjustable display variables including current, percentage of main variable, and main variable; Each variable can be independently set to display decimal point positions: 0, 1, 2, 3, 4. If two display variables are the same, the LCD will only display one variable; Otherwise, the LCD will display at 3-second intervals,
Electromagnetic flow meters are divided into two display modes: split type electromagnetic flow meters and integrated type electromagnetic flow meters. Series nominal diameter DN15~DN3000.
The split type electromagnetic flowmeter is an induction instrument that measures the volume flow rate of conductive medium inside a tube based on Faraday's law of electromagnetic induction. It uses embedded microcontroller technology to achieve digital excitation, and adopts CAN fieldbus on the electromagnetic flowmeter, which belongs to China and has reached the domestic level of technology.
The split type electromagnetic flowmeter can not only meet on-site display requirements, but also output 4-20mA current signals for recording, regulation, and control. It has been widely used in industrial technology and management departments such as chemical, environmental protection, metallurgy, medicine, papermaking, and water supply and drainage.
In addition to measuring the flow rate of general conductive liquids, the split type electromagnetic flowmeter can also measure the volumetric flow rate of liquid-solid two-phase flow, high viscosity liquid flow, and salt, strong acid, and strong alkali liquids.
The integrated electromagnetic flowmeter is developed based on Faraday's law of electromagnetic induction and is used to measure the volumetric flow rate of conductive fluids. Due to the characteristics of *, it has been widely used in the measurement of various conductive liquids in industry. Mainly used in industries such as chemical, papermaking, food, textile, metallurgy, environmental protection, and water supply and drainage, it can achieve system control when paired with computers.
1. The electromagnetic flowmeter has no movable parts or flow blocking components, which will not cause pressure loss, wear, blockage or other problems.
2. Electromagnetic flowmeter is a volumetric flow measurement instrument that is not affected by the temperature, viscosity, density, and conductivity (within a certain range) of the measured medium during the measurement process.
3. The range of electromagnetic flowmeter is wide, up to 1:100. In addition, electromagnetic flow meters are only proportional to the average flow velocity of the measured medium, and are independent of axisymmetric flow states (laminar or turbulent).
4. Electromagnetic flowmeter has no mechanical inertia, sensitive response, can measure instantaneous pulsating flow rate, and has good linearity. Therefore, the measurement signal can be directly converted into a standard signal output linearly using a converter. LD-T type can indicate on-site, while LD type can transmit over long distances.
