First, the installation method 1. The distance between the mounting position and the tank wall is recommended to be 1/6-1/4 of the tank diameter (at least 300mm, concrete tank is at least 400mm). Do not install in the middle of the metal tank. Do not install it at the feeding port. When selecting the probe length, pay attention to the bottom of the probe. Approximately 30mm away from the bottom of the tank, observe the temperature of the medium. 2. Obstructions in the tank should pay attention to the distance between the probe and the obstacle at least 200mm 3. Disturbance rejection interference echo suppression: The software can achieve the suppression of interference echo, so as to achieve the ideal measurement effect Bypass tube and waveguide (for liquids only) For viscosity not to hit 500cst, can use the bypass tube , Waveguide or tube to avoid interference. 4, liquid standard installation For viscosity ≤ 500cst and difficult to produce adhesion of the medium, tube probe is a good program, its characteristics are as follows: excellent reliability can be used for any medium with a dielectric constant greater than equal to 1.4, measuring the conductivity of the medium Sex-independent tank obstructions and short tube sizes do not affect the measurement of the transverse pressure that the rod-type probe can withstand High-viscosity media are recommended for rod-type probes Second, troubleshooting 2, on the foam on the measurement of the impact of dry foam and wet foam can reflect the radar wave back, no effect on the measurement; neutral foam will absorb and diffuse radar waves, thus seriously affecting the reflection of the echo and even no echo. When the surface of the medium is a thick, thick foam, the measurement error is large or cannot be measured. Under this working condition, the radar level gauge has no advantage, which is a limitation of its application. 3. Handling of antenna crusts Hanging materials with a small dielectric constant have no effect on the measurement in the dry state, and a material with a high dielectric constant has an influence on the measurement. It can be purged with compressed air (or clean water), and the cooled compressed air can reduce the temperature of the flange and electrical components. An alkaline cleaning solution can also be used to clean alkaline crusts, but no liquid level measurement can be performed during cleaning. 4. The corresponding treatment method for flooding The solution to this problem is to change the radar level gauge to waveguide-type measurement. The waveguide type radar level gauge is still installed at the original opening, and the waveguide is higher than the exhaust pipe by about 0.2m. In this way, even if the liquid slurry overflows from the exhaust pipe, it will not cause the liquid to flow. The meter antenna is submerged by the slurry, and the stirrer eddy currents are prevented from interference and a large amount of steam emerges from the probe, which reduces the damage to the probe. At the same time, since the waveguide is well focused and the received radar wave signal is stronger, the signal is obtained. A good measurement effect. The use of waveguide tube measurement method can improve the metering measurement conditions, improve the instrument measurement performance, has a high value of promotion and application. It is mainly used for medium and large tonnage plastic injection moulding machines over 500T, which adjusts the platen in-between Tie Bars And Accessories,Plastic Machinery Parts,Injection Molding Machine Parts,Injection Machine Parts ZHEJIANG HUAYE PLASTICS MACHINERY CO.,LTD , https://www.huaye-group.com
1, the probe knots and frequent troubleshooting methods The first method is to increase the installation position of the probe, but sometimes the installation conditions are limited, can not be increased, it should be used to the level measurement value interlocked with the slot pump Method to solve this problem: The liquid level setting value is reduced by about 0.5m. When the liquid level reaches this high value, the discharge pump can be stopped or opened.
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