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A vertical level sensor, also called fluid sensor or float switch, is a mechanical device that monitors liquid levels inside a container. In typical applications, a vertical water level sensor is to trigger an action when the liquid reaches a certain level.
Vertical liquid level sensors are made up of two main components: a center tubed magnetic float and a reed switch. Both the float and the reed are operated by magnets. When the float reaches a predetermined level, the reed switch reacts by closing or opening.
| Part Number | Housing Material | Switch Power(max) | Switch Voltage(max) | Switch Current(max) | Temperature(max) | Pressure(max) |
| BF-21 series | Plastic | 50W | 220VDC | 1A | 90℃ | 50 psig |
| BF-22 series | Stainless steel | 50W | 220VDC | 1A | 150℃ | 400 psig |
What's the advantage of a vertical liquid level sensor?
Non-powered, reliable, direct indication, relatively inexpensive, various outputs
Can BST make explosion proof liquid level sensor?
Yes, ATEX certified.
What's the output of a liquid level sensot?
Analog or digital, depends on customer's needs.
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