MLS Liquid Level Switch

• 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
• All models screw directly into the scrubber or can be mounted via a FW Murphy External Float Chamber
• CSA C/US Class I, Div. 1, Grp. B, C & D locations
• Canadian registered

 

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OVERVIEW:

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.

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SPECIFICATIONS:

• Process Connection: 2” NPT (MLS-020); 1-1/2” NPT (MLS-015)
• Fluid Density (SG):
  • 0.50 MIN (no extension)
  • 0.65 MIN (1 inch extension)
• 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
  • Conductor cross section AWG/kcmil min.: 26
  • Conductor cross section AWG/kcmil max.: 16
• Canadian Registration Number: 0F12013.2 C (all provinces and territories) (TF models, registration pending at time of print)

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