Issues with the renovation of level gauges in tank areas.
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Under the new regulations, two different types of level gauges must be installed to measure the liquid level in the tank area. According to current standards, it is common to design one servo, one radar, and one level switch to implement a 3-to-2 interlock. In our old tank area, the dome tanks and internal floating roof tanks were originally equipped with only one Rosemount radar or E+H actuator; Vega level switches were installed, but there were no magnetic flap level gauges with on-site displays. It does not comply with current regulations. There are two options available; the most cost-effective one is to use a magnetic flap level gauge, while the most expensive option is to add an additional remote transmission level gauge (a guide wave tube is also needed for the internal floating roof, making it difficult to make changes). But all of them need to be tank cleaned, and the cost is too high. Is there any way to install on-site or remote level gauges without the need to empty the tank?
Wouldn’t it be good to add a magnetic flip switch? It could also send remote signals.
Float level gauge, with output at the top; the float is placed on top of the floating roof. It can be modified in this way as per my suggestions
It’s not that you can’t add magnetic flip plates; a tank can be over ten meters tall, so several of them need to be used. The main reason is that I don’t want to add it after emptying the tank; processes such as steaming, purging, and explosion testing are too troublesome.
A float type level gauge is the simplest kind of such device; it consists of a floating ball inside and a weight outside, with steel wires connecting the two, and pulleys are used to allow the weight to move up and down. When the liquid level is high, the weight moves downward, while when the liquid level is low, the weight moves upward.
I’ve seen it. But our tank top has only two openings: one for the remote level gauge, one for oil sampling, and a few for breather valves.
Either choose the buoy type, as its price is low, or install two magnetic flip switches if that doesn’t work.
Ultrasonic level gauge, the one on the outside
Coincidentally, the best solution is to use an external level gauge that can be installed directly at the bottom of the tank, eliminating the need to empty it.