Settings of radar level gauge on spherical tank
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How to set up the radar level gauge on the spherical tank? Do I need to set up 2 radar level gauges? Thanks!
Does the spherical tank need to be equipped with 2 radar level gauges?
It is enough to set up one. Please pay attention to the installation by Huang Chunfang, published by Sinopec Press in 2008.
The spherical tank is equipped with two radar level gauges. One is used to display the liquid level and the other is used to measure. The accuracy is 1mm. Do you think it is necessary?
This post was last edited by qren on 2009-8-16 18:14. I think radar level gauges must have their own flaws and will be affected by environmental and other factors. Unlike normal pressure tanks, if the radar level gauge is inaccurate, you can immediately check the level manually. There is nothing you can do about the spherical tank. Of course, if there are liquid level gauges such as glass plates, then two radars will be redundant.
Usually, the spherical tank is equipped with a glass plate liquid level gauge, so it is enough to install a radar, one for on-site indication and one for remote transmission, which meets safety requirements.
I agree with the person above. Our tank farm has installed a radar level gauge on the top of the tank to display the liquid level on the computer, but the external measurement is still done through a floor scale.
There is no need to install 2 units, one is enough. Usually, spherical tanks are equipped with glass plate level gauges.
There is no need for two. One of them is enough. Install a local display.
Just install a magnetostrictive liquid level gauge. Accurate measurement parameters such as liquid level, temperature, and capacity are available, and it is cost-effective. Domestic ones are just a few thousand faster
The spherical tank is clearly stipulated in the new specifications and standards, and it must be equipped with two sets of remote liquid level instruments, preferably with different principles, so there are places where two sets of radars are installed. We usually use one set of radar and one set of double flanges.
Spherical tanks are generally pressurized equipment, and the pressure-bearing capacity of the liquid level gauge needs to be considered. Glass plate liquid level gauges are generally not considered.
One unit is enough. Do you think the measurement will be accurate if more are installed? You cannot judge the error by referring to the instrument.
Why does the propylene spherical tank in our factory only have one liquid level gauge, and it is a differential pressure type! ~
Nowadays, on-site quartz tube level gauges are not allowed for new spherical tanks, so the regulations emphasize the use of two. However, it is recommended not to use radar. The accuracy of radar level gauges is not very high when used in liquefied gas systems. It is recommended to use servo
Our acrylic spherical tank uses a radar level gauge and a magnetic flap level gauge! It should be able to meet safety requirements!
I have two radar level gauges here, but one is actually used for measurement. Later I asked the instrument staff why, and the answer was: 18M DN, if one breaks, you get in? Wow, it turns out that the steel rope in the middle is very prone to problems. In fact, as a container with relatively strong sealing and large capacity, two liquid level gauges are necessary.
Liquefied hydrocarbon spherical tanks should not be equipped with glass plate level gauges as specified in SH3136
Just use servo, European and American* * This is all done, haha. The key is that the accuracy is not affected by pressure and can be automatically calibrated. An isolation ball valve is installed under the servo, which can be cut off when necessary.
The petrochemical automation design manual says that radar can be used on spherical tanks. But the designs I have seen so far are servo drives with local displays for liquid hydrocarbon spherical tanks; radar is used on unpressurized storage tanks. The person above is right, glass plate level gauges cannot be used in spherical tanks.