NIVOMAG – Magnetic Coupling Level Switches
Brand: Nivelco
$0.00 Excl. GST
All prices are in NZ$, and GST exclusive and are subject to change without notice.
Product Details
Description
NIVOMAG MK-200 series magnetic float level switches are used for point level detection and level control of liquids in all types of vessels.
Operation principle: the permanent magnet of the float activates the output microswitch by a non-contact coupling system.
The great variety of both the top and side mounted versions makes it easy to install the switch in any tank at any location. For the simplest level switching you can select models with fixed hysteresis, while for level control application we offer NIVOMAG switches with adjustable hysteresis.
Models with rubber or silicon sleeves can be applied for contaminated liquids. You can fit the NIVOMAG switch with an MMK type tester, to check the switching function even when the liquid levels aren’t changing.
NIVOMAG Features
- Operation without power supply
- Micro-switch separated from the process
- All wetted parts stainless steel
- Side or top mounting
- Fixed or adjustable switch differential
- Submersible versions
- Various process connections
- Operational check via optional tester
- Flame-proof models
- SIL1 approval
Applications
- Liquids with min. 0.7 kg/dm3 density
- Fail-safe and control level switches in closed tanks
- Power stations, chemical, petrochemical and pharmaceutical industry
- Ballast tanks on ships
Technical Specs
| NIVOMAG MK-200 Series Specifications | ||
| Nominal pressure | 2,5 MPa (25 bar) [MKU: 0,2/2,5 MPa (2 bar/25 bar)] [MKA-231,6 MPa (16 bar)] | |
| Medium temperature | see temperature diagram (brochure) | |
| Ambient temperature | –20°C…+80°C, , Ex version: see temperature specification for Ex version table | |
| Liquid density | min. 0,7–0,85 kg/dm3 | |
| Float | Cylindrical except MKA-230: Ball Float | |
| Switch hysteresis | Fixed (MKA/MKU/MKG/MKV/MKS/MKZ Adjustable (MKA-22 and MKA-23) | |
| Protrusion length | 0-3000mm depending on model | |
| Material of wetted parts | Stainless steel (1.4571, 1.3960, 1,4404), and MKG: rubber, MKS: silicone | |
| Housing material | Paint coated aluminium | |
| Switch action | 1 micro-switch with 1 closing and 1 opening contact (NO and NC) * | |
| Switch rating | Standard 250 V AC12 10 A; 220 V DC13 0,6 A Ex version 250 V AC12 2,5 A; 220 V DC13 0,3 A | |
| Electrical connection | M20x1,5 cable gland, terminal (MKU, MKV, MKZ integrated cable NSSHöu-J 5x1,5 mm2, Ø15 mm) ** | |
| Ingress Protection | IP65 (MKU, MKV, MKZ IP68 up to 20 m underwater) | |
| Electrical protection | Class I | |
| Safety integrity level | SIL1 | |
| Ex marking | ATEX II2 G EEx dme IIC T2…T6 | |
| Mass | 1,8 – 3,5 kg | |
| * NO and NC terminals should be connected to equipotential circuits ** Cable length should be specified when ordered |
Ordering Information


