Time Mark Corp. Model 403 Liquid Level Controller


The Time Mark Model 403 is a liquid level controller which provides central control of duplex pumping systems. The model 403 includes pump alternating, visual run-time meters, hand-off-auto (HOA) controls & alarm outputs.

Four level-sense inputs interface with float switches, pressure switches or other level sensing devices which can provide a contact closure. A SPST, normally-closed internal power-fail contact opens when AC power 120VAC is connected to the controller, and closes if power is lost or removed. Connections for external remote alarm contacts, which must remain closed for normal operation (or jumpered if not required), are supplied for each pump. If either circuit opens, the corresponding pump will be locked out until the problem is corrected and the Alarm Reset switch is pressed.


  • Dual run-time meters
  • Selectable lead/lag or automatic alternation
  • Alarm outputs
  • Hand-off-auto controls
  • 4 sensing levels
  • Moisture protected circuits
More Information
Features Liquid Level Controller
Manufacturer Time Mark Corporation
Power 120V AC
Type Liquid Level Controllers
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