What gauge is used to measure the liquid level in a circulating pool?
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What gauge is used to measure the liquid level in a circulating pool? The signal needs to be sent to the DCS. The walls of the tank are made of thick concrete, making it unsuitable to install flanges there. There are sprinklers inside the tank, so the transmitter is constantly exposed to water mist. It is necessary to measure the high and low alarm values at -0.2 and 1.6 meters. How to select tables and install in this environment? Especially, explain the installation in more detail. Thank you!
Magnetically operated flap types work as well; there are also radar or infrared options – you can look for manufacturers and get in touch with them
An immersion-type level transmitter can meet the requirements
Submersible level transmitters, at an affordable price
An immersion level gauge can be used; all that’s needed is to fix the gauge to the circulation tank.
Using a radar level gauge is great, ah
I think everyone should give a brief introduction to the price and measurement principle of the selected level gauge; otherwise, it’s hard to understand why this particular level gauge was chosen.
Submersible, magnetic flap, ultrasonic – all of these can meet the requirements. The key lies in the installation; since there are sprayers in the tank, the water surface is quite disturbed. Therefore, it is necessary to install a tube in the tank to mitigate these disturbances, so that the liquid level can be measured more accurately. Otherwise, the measurement will be inaccurate, and the sensor head may get damaged, or the connection cables may break
1. If the cost is a concern, use an immersion type level transmitter. 2. A gauge well level gauge is the most suitable option; for circulating water, a supply device is used, with water being pumped in. It’s best to filter out any impurities, so it’s necessary to measure the level before and after the gauge well.
It is recommended to use a submersible level gauge; it actually measures the pressure at the bottom of the tank and converts it into the corresponding liquid level. Submersible gauges are easy to install and inexpensive.
It is recommended to use a level switch, or ultrasonic sensors
For the liquid level in a circulating pool, the accuracy requirement is not high; an immersion type level gauge will suffice. It is easy to install and inexpensive.
Can an immersion level gauge transmitter be installed outside the tank?
It is recommended not to use submersible level gauges, as their design is unreasonable; we have used many of them and they all broke down. An ultrasonic level gauge can be used. Use one with a higher protection rating. Such as IP65 or IP67 – they are particularly useful for measuring water levels.
Submersible level gauge transmitters can be installed outside the tank; they consist of a transmitter with a long tail, and there are those in rod form as well as those that resemble ropes
We use a float level gauge with a transmitter
In principle, an active approach should be used, but if someone says it doesn’t work well in practice, then there’s nothing we can do. Radas and ultrasonic sensors are too expensive :( Let’s think about whether there are any other solutions!
Choose a static pressure level gauge, paying attention to its waterproof properties. Domestic models generally last no more than half a year. I remember there is a foreign brand, possibly DEWELL, which offers excellent waterproof performance at a reasonable price; its lifespan seems to be 2 to 3 times that of domestic models.
The requirements for measuring the liquid level in a circulating water tank are not high; an accuracy level of 1 is sufficient. Our factory’s tanks did not originally have any level gauges, but at the request of the production department, a float level gauge of the UQZ-01 model was chosen. It is manufactured by Dandong Tongbo Electrical Co., Ltd., and it has been in use for 3 years without any problems. It is inexpensive, and the float in the water provides an intuitive indication of the liquid level.
Let me introduce them then. 1. You should use a reed switch level gauge that operates on 24V power and provides a 4–20MA output; if the gas isn’t corrosive, some simple anti-corrosion measures are sufficient, and reed switches are very reliable. 2. For radar or ultrasonic level gauges, you just need to install a bracket on the inner surface of the concrete structure – they also provide a 4–20MA output. As for alarms, it’s easy to handle once the signal is fed into the DCS system; the alarm settings can be configured there