DUAL LIQUID LEVEL MONITOR

摘要

75-CON-397 APPLICATION OF: DONALD J. BETTS AND MARTIN W. HAMILTON FOR: DUAL LIQUID LEVEL MONITOR A liquid level monitoring system functions by applying an alternating voltage to a probe. When the liquid level in a reservoir touches the probe, a low inpedance to ground is present, thereby permitting current to flow to ground. When the liquid level falls below the probe, a high impedance to ground is created and current flows to a detector. The detector switches on an alarm which flashes an appropriate warning.