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ZHUHAI XINWANSHAN INSTRUMENT CO.,LTD
ZHUHAI XINWANSHAN INSTRUMENT CO.,LTD
一、Product introduction
WS3051MD—T5 Insert type gas protection density meter is mainly rely on the scene to promote the use of gas sources, also known as the air protection act integrated online density meter; That is the latest development of our company and patented products, innovative products, technology leadership, quality assurance, import assembly. Integrated products, safe and reliable.
Insert type gas protection density meter is mainly used to exposure, or in low pressure and seal the tank liquid density measurement precision, especially in the sewage, and easy scaling, strong corrosive, strong acid and alkali, temperature, explosion, viscosity and so on bad situations. Is the general of a measurement method, not only is safe and reliable, mature measurement principle, and it overcomes the shortcomings of other density measuring instrument, without any mechanical drive and displacement in the process of measurement, and high precision, simple construction without flare, do not need to tank.
WS3051MD一T5 Insert type gas protection density meter in the explosion-proof area，airtight pot measurement of liquid density system from the following aspects. The trachea: more than or equal to Φ 36mm PTFE pipe and other pipes, then indeed liquid, its length is less than or equal to 2 meters. Installation is complete, check no leakage, density meter is connected to the power, throttle valve open to all pass state. Then the compressed gas continuously into the densitometer connected port until full of air tightness meter converter flatus. Inflatable after 3 minutes, due to the size of the gas pressure in the air pressure converter is determined by the liquid level in the tank, so to stop the exhaust is tank liquid level height of the formation of the pressure equal to static pressure converter and pipeline of air pressure, density transmitter of the analyzer is detected, differential pressure and the height of the liquid level in the tank (storage density) numerical. Therefore, the change of the density of the actual liquid in the storage tank can be achieved, which can achieve the purpose of detection. According to the principle that the pressure is equal everywhere in the sealed pressure vessel, the same is equal to the inside of the pipeline and the pressure converter.
二、Operational principle
WS3051MD—T5 Insert type gas protection density meter essentially for high precision differential pressure transmitter, by gas blowing two fixed gas detection medium density; its working principle: liquid column pressure and the fixed height is proportional to the density of liquid.
P=ρgh
In the formula: P——liquid column pressure and the fixed height
ρ——the density of liquid
h——height of liquid column
According to the pressure measuring pressure value in measuring acceleration of gravity with known height of liquid column under the condition, can be measured liquid density.
三、Technical characteristics
| Measurement range | 0.000 - 3.000 g/cm 0.000 - 3000 kg/cm3 （Users can freely choose the measurement range） |
| Calibration range | 0.500 - 3.000 g/cm 500 - 3000 kg/cm3 （According to the user selected） |
| Measurement accuracy | ±0.01 g/cm3、±0.005 g/cm3、±0.002 g/cm3 (User choose for accuracy) |
| Repeatability | ±0.0005 g/cm3 (±0.5 kg/m3) |
| Operating temperature range | -50℃~+250℃ (Different medium temperature is optional, divided into low temperature, normal temperature, high temperature type)
|
| Maximum working pressure | 0.4MPa |
| Fluid viscosity range | 0 -20000 cP |
| Temperature coefficient | ＜0.1kg/cm3/℃ (after correction) |
| Pressure influence | ≤0.4MPa |
| Built-in temperature sensor | PT1000 |
| Liquid materials | 304,316L, RR-R ,PTFE polyethylene (special Aussino) |
| The fork body coating | Standard、PTFE、Zirconia |
| Power supply | 24VDC, ≥500 mA |
| Intelligent signal output | 4-20Ma、RS485ModbusRTU |
| Display mode | HD backlight LCD display meter |
Output accuracy （20℃） | ±0.5% or ± 0.2%FS |
Output repetitive (-40 ~+85℃) | ±0.1%FS |
| Process connection | Flange type (size can be customized according to the site or the user's own requirements) |
| Protection grade | IP67 |
| Shell | Aluminum Alloy |
| Explosion-proof type | EXd II CT4/5/6 |
四、Product features
1. The Insert type gas protection density meter is suitable for flowing or still liquid, which is suitable for tank and container installation.
2. Using the two wire transmitter integrated structure, no moving parts, simple maintenance.
3. Continuous online measurement of liquid density and temperature, without interruption of the process can be directly used in the production process control.
4. Five digit LCD display.
5. There are several different kinds of density of the touch liquid material, according to the site to select the material to meet the needs of different.
6. Excellent integrated protection structure ,superior temperature stability, design firm and reliable.
7. Suitable for the measurement of high temperature and low temperature, high viscosity of the medium containing impurities.
8. fixed sensor design, factory calibration, convenient site configuration.
9. Easy to install and use ,density meter of two probes contact the liquid to display the reading.
10. Simplified maintenance, no regular cleaning.
11. Online density meter calibration without standard reference source, no laboratory calibration, no process interrupt.
12. Intrinsically safe type and explosion proof type can be used for dangerous scene.
五、 Installation requirements
Due to the need for the process, the Insert type gas protection density meter is often installed in the relatively poor working conditions of the site, as far as possible in order to reduce the density meter working conditions deteriorated, should try to install in small changes in temperature gradient and temperature, no shock and vibration of the place, no air bubbles.Only considering the specific conditions of the site, to make the accuracy index. Pay attention to the following items when installing：
u The product must be installed vertically and vertical to the ground not more than 5 degrees (such as not installed vertically, or the local acceleration of gravity deviates from the standard acceleration of gravity, will result in bias, the following will introduce how to eliminate the resulting deviation.
u The side of the installation must ensure that the level of direction, density meter equipped with a level, convenient for users to install.
u After opening the cover of the electric box, the reinstallation should be tightened to ensure close contact with the sealed O type ring, If not tightened, the moisture will enter the electrical box, the impact of the normal operation of the circuit.
u The density meter of the shell must be effectively grounded.
u The installation position as far away from the inverter or high power motor, when necessary to take isolation measures, the use of shielded power cable.
u After installation, empty tube or empty tank, then zero calibration, the density value is displayed as 0g/cm3.
六、Wiring way
Gas protection method online density meter measuring field wiring diagram
七、Application fields
u Sugar and wine industry: Squeeze the juice, syrup, Grape Juice, lime juice, alcohol density GL, molasses, hexane / ethanol interface, etc.
u Dairy industry :milk, lactose, cheese, dry cheese, lactic acid, etc.
u Mining industry: coal, potash, brine, phosphate, calcium compounds, limestone, copper and gold, etc.
u Oil refining industry: lubricating oil, aromatic agent, fuel oil, vegetable oil, etc.;
u Food processing industry: tomato juice, grape juice, lemon juice, tomato sauce, molasses, vegetable oil, syrup, fruit jelly, jam, etc.
u Pulp and paper industry: black paste, green pulp, pulp washing, evaporator, caustic etc.;
u Beverage processing: beer, soft drinks, wine, Instant Coffee ,etc.
u Chemical: caustic soda, acid, urea, cleaning agent, polymer density, ethylene glycol, sodium chloride, sodium hydroxide, etc.
u Petrochemical: natural gas, oil and gas washing, kerosene, lubricants, oil / water interface, etc.
