How to select a level gauge with a range of 10 cm?
Thread Content
As the title suggests, the medium is water, at normal pressure, and the range is 10 cm. How should I select a level gauge? Thank you
There are 10-cm models – come to me for them. There are also models with a smaller range of 2 cm. They come in insertable and drop-in types; you can choose whatever you prefer.
If it’s a conventional tank unit that hasn’t been produced yet, couldn’t the flange spacing be increased a bit, say to 50 cm? It’s sufficient to cover what’s known as 10 cm. It has no impact on other aspects, and the liquid level even increases when observed.
A magnetostrictive level gauge can be considered; use a float with an outer diameter of 28 mm, and the probe should have an outer diameter of 8 mm. Level transmitters that operate on the principle of pressure have relatively large measurement errors; they can be used if high precision is not required.
The last edit to this post was made by 1111111 on 2019-3-11 at 20:22 :lol 1. The water column is only 10 centimeters long – how dare you talk about BB magnetostriction? The float sinks about 5 centimeters when submerged in water, right? So when the liquid level is below 5 centimeters, the float settles on the bottom, resulting in a dead zone of 5 centimeters that cannot be measured using magnetostrictive technology! 5 cm = 50% of full scale! 2. Hehe, are you stupid or do you not have enough brains? 3. The water column is only 10 centimeters tall; it’s a pressure-based level gauge that has no measurement dead zone, no moving parts that could cause fluctuations, and it can detect even changes in liquid level as small as 0.01 mm. So how can you say that its measurement error is quite large? 4. How did you come up with such a ridiculous conclusion? Yesterday, my brother posted a thread on the casual forum – go take a look; you’ll find something useful there............ https://bbs.hcbbs.com/forum.php? ... &page=1#pid21903264
This post was last edited by 49205455 on 2019-3-13 20:06; normal pressure is sufficient. It’s a water tank. 10CM is pretty much the same as 1KP. Rosemount and Yokogawa offer many models that can accurately measure this pressure. There are also many domestic ones. It’s not too difficult.
“Isn’t 10CM roughly equivalent to 0.1KP? ! ? ? ? Really? ! Is this that damned thing teaching you, kid? Middle school physics textbooks from around the world will blow your stupid mouth wide open! ,,,, You worthless dog! Just keeping a record of this. You kid, change that post quickly; if you’re slow, your mom will be too ashamed to remarry and you’ll end up having multiple dads :lol
This post was last edited by qugd on 2019-3-11 at 22:09. For a liquid level of 10 centimeters, if it is water, a differential pressure transmitter is a suitable option; with a range of around 1 kPa, it can provide fairly accurate measurements. However, if the liquid level fluctuates greatly, the measurement values will be unstable. Another approach is to use the visual method, with pressure-resistant glass inclined tubes; the length of these tubes can be set at 100 cm or more, which is equivalent to magnifying the scale by 10 times. This method may not be able to transmit signals over long distances, so install a small camera for monitoring. This method cannot be used in environments with high temperatures and pressures. Another method involves using two parallel, straight metal rods to form a pair of conductivity electrodes, which are immersed within the range where the liquid level changes; indirect indication is achieved through the linear variation in conductivity. The prerequisite is that the fluid has good electrical conductivity.
Glass tube, level gauge, threaded connection is sufficient