Vertical magnetic float level switches RIZUR-M-V
Intended use and application area
Level switches RIZUR-M are manufactured in two design variants: RIZUR-M-G (horizontal mounting) and RIZUR-M-V (vertical mounting).
Level switches RIZUR-M-V are used in systems of automatic control, monitoring and measurement of technological projects, as well as with other automation devices. They can also be used in filtration and cleaning systems and in tanks for cooling and lubricating liquids.
Upon reaching the set level, the liquid causes the level switch to emit “dry” output signal (NC and NO or break-before-make contacts are used).
Design and operating principle
The immersed part of the RIZUR-M-V sensor is a rod with a float (or several floats in different points). The traveling distance of the float is limited at the top and bottom parts by restrainers. Inside the float there's a permanent magnet, and inside the rod, which is a hollow pipe, there's a reed switch. When the float moves, the magnetic field affects the reed switch which causes control circuit to open or close.
Level switches RIZUR-M-V can have a housing with terminal blocks for the signal cables as well as one with a cable gland of required length.
The switches can be supplied in different design variants - depending on the process connection type (threaded or flange). Standard variant usually has a minimal connection size different depending on the float's diameter but on request it’s possible to manufacture it smaller than the float’s diameter with the float itself mounted on a mounting spool inside the tank.
However, there're design variants with the thread or flange connection smaller than the float's diameter and the float itself is attached to the rod inside the reservoir.
Level switches RIZUR-M-V are manufactured in accordance with the requirements of regulatory documents, designed at the Company, have all the necessary certificates and international standard ISO 9001. It’s possible to manufacture both standard design variants of RIZUR-M-V and non-standard ones, based on the technical requirements and Customer’s drawings.
Mounting example
Magnetic float level switch RIZUR-M-V (vertical mounting)
Medium operation temperature, °С | -60….+150 |
Process pressure, MPa | 1,6; 2,5; 4,0; 6,3; 10; 16 (up to 32 on request) |
Minimum medium density, kg/m³ |
500 |
Material contacting the media | st. steel 304, 316L, titanium, PTFE, PP, etc. |
Number of alarm points | up to 8 |
Max permissible voltage on the contacts, V | 250 |
Max switching current, A | 0,5 (up to 2 on request) |
Max load on the contacts, W | 20; 60; 200 |
Ambient temperature, °С | -60….+50 |
Spatial orientation | vertical, horizontal |
Ingress protection | IP65, IP66, IP67 |
Explosion protection marking | without explosion protection, 1ExiaIICT6X, 1ExdIICT6 |
Housing material | plastic, aluminium, stainless steel |
Process connection | threaded, flange (at least DN50) |
Average service life, years | 10 |
Design density is such media density that has the float immersed in the liquid at 50% of the height, minimal density – when the float is at 85%. It’s necessary to take this data into account when calculating the distance to the alarm points. *It’s possible to manufacture level switches with customized floats.