The LMS200 is a magnetically actuated double-pole, double-throw (DPDT) switch designed for non-invasive level detection on KM26 series magnetic level gauges and LS series products. It features a powder-coated copper-free aluminum IP66/67 and NEMA 4X enclosure with approvals for ATEX, IECEx, and FM US and Canada hazardous areas. The switch has a 10 A resistive rating at 250 V AC and operates within a temperature range of -40°C to 70°C. It supports direct mounting with stainless steel clamps or rod mounting for high-temperature applications, and its cam-driven snap-action mechanism ensures break-before-make switching without process contact. The standard electrical connection is ¾ in. FNPT.
The LMS200 consists of two snap action switches operated by a precision actuation mechanism. The actuation mechanism consists of two cams arranged on a spindle assembly. A rod magnet is internally mounted to a spindle assembly in such a way as to cause the spindle to rotate when a magnetic field of proper orientation passes near the switch. A magnetic KM26 float passing by the LMS200 in either the upward or downward direction will cause the switch to change states. After the float has passed, the switch will remain in its respective state until the float passes the switch going in the opposite direction. The action of the switch is break before make.
The unique magnetic coupling action eliminates the need for seals, diaphragms, springs, or torque tubes. There is no physical contact between the switch and the process. Magnetic coupling also eliminates the necessity of process connections and insures total isolation from the process.
| ABB Measurement & Analytics | |
|---|---|
| Product Category | Level Sensors |
| Product Number | LMS200 |
| Product Name | Magnetic Level Gauge Switch |
| Device Classification | Sensor Only |
| Media Type | Liquid |
| Level Measurement Type | Continuous Level |
| Output Options | Alarm / Visual Indicator |
