MLS Series Liquid Level Switches are float activated to operate an electrical SPDT reed switch for annunciation/pilot signal for indication of high level to an annunciator, controller or PLC.

The MLS connects directly into the gas scrubber wall and can be used with a FW Murphy weld collar or FW Murphy external float chamber.

The MLS Series is available in both 1 1/2 and 2 in. NPT models and with or without the test button. 

The test button test for float function; the complete mechanism including the magnetic activation of the reed switch; and the wiring from the switch to the control panel.

MLS Liquid Level Switch
FW Murphy MLS Liquid Level Switch

Specs

Weight
200kg
Process Connection
2” NPT (MLS-020); 1-1/2” NPT (MLS-015)
Pressure Rating
2000 psig (13.8 MPa) [138 bar]
Body
ASTM A351 CF8 (304 SS)
Cover
ASTM A351 CF8 (304 SS)
Other Wetted Parts
303, 304 and 316 SS
Process Temperature
-20° to 300° F (-29° to 149° C)
Electrical
30VAC/VDC 75mA Form C SPDT

Features

  • Clean magnet design virtually eliminates iron filing accumulation on the magnet
  • Seal-free construction
  • ANSI/ISA 12.27.01 compliant (Single Seal)
  • Optional push button to test functions
  • Operates in 0.50 specific gravity or heavier fluids
  • Designed for harsh gas compressor scrubber applications
  • 304 cast equivalent SS body and 304 SS float
  • Rated for 2000 psi (13.8 MPa) [138 bar] working pressure
  • Trip on rising and falling without need to rotate body
  • Electric model only available
  • CSA C/US Class I, Div. 1, Grp. B, C & D locations
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