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o LEVEL PROBE RELAY <br /> MONITORS CONDUCTANCE PROBE AND <br /> PROVIDES PUMP CONTROL OR LEVEL ALARM <br /> N" <br /> MOTOR �� �,°T�iN'""` <br /> PROTECTION <br /> ELECTRONICS �fmus <br /> I t II400 <br /> C <br /> INC. 9t r� oan <br /> U <br /> MADE IN UL FILE#E101681 C US <br /> THE U.S.A. *UL listed models require use of an LISTED <br /> SD12 or SD12-PC socket. ✓""",,.>� <br /> DESCRIPTION <br /> The Level Probe Relay senses liquid level and provides a relay output for <br /> controlling a pump or level alarm. The unit has two inputs, an ON and an OFF, <br /> for connection to two electrodes of a conductance probe. All setup is easily done <br /> using the seven DIP switches on the unit. When used for a level alarm the ON El <br /> and OFF inputs may be connected to the same electrode on the probe, or the <br /> ON input may be used by itself. When used for pump control the ON and OFF <br /> inputs are typically connected to two different level probe electrodes to provide a <br /> latching function. The unit has two pump control modes, Pump Down (empty a <br /> tank) and Pump Up (fill a tank) (see table below). When in the Pump Down <br /> mode and both inputs detect liquid, the unit energizes the relay and keeps it 3.750" <br /> energized until the level drops to the point where the OFF input no longer detects <br /> liquid. When in the Pump Up mode and both inputs detect no liquid, the unit <br /> energizes the relay and keeps it energized until the level rises to where the OFF <br /> input detects liquid. The Sensitivity of the unit must be set for the type of liquid <br /> being detected (see Dip Switch table below). The unit provides a 10 second <br /> power up delay to prevent a pump from being turned on too soon after a power <br /> interruption. An adjustable ON Delay is provided for use as a lag pump delay. <br /> The adjustable OFF <br /> Delay is provided so <br /> be OFF ON <br /> that the unit may SEN3ITIVITY TYPICAL SEWAGE LIGHT SEWAGE 1.750"— - <br /> used to provide timed 2 OFF OFF <br /> off, backup pump con- 3 PUMP MODE OFF–PUMP DOWN(EMPTY) ON–PUMP UP (FILL) O C <br /> trol. (See the Dip <br /> Switch table for the ON 4 OFF ON OFF ON 0 0 <br /> ON DELAY 1 SEC S SEC 10 SEC 15 SEC <br /> and OFF delay set- i 5 OFF OFF ON ON 0 0 <br /> tings). 2.3]5., <br /> 6 OFF ON OFF ON O FolO <br /> OFF DELAY 1 SEC 5 SEC 30 SEC 60 SEC <br /> ] OFF OFF ON ON 0 0 <br /> 0 0 <br /> SPECIFICATIONS V 1 12— PROBE-OFF <br /> Input Power: 120 VAC ±10%, 3.8 VA max 2 11— PROBE-ON <br /> Relay Type: DPDT 3 10•-- GROUND <br /> Output Rating: 5 A Resistive @ 240 VAC V 4 9 • <br /> 5 A Inductive @ 240 VAC 5 8— 120 VAC <br /> Sensor Output Voltage: ±12 V Square Wave <br /> Sensor Output Current: ±1.2 mA max (per sensor) 6 7 NEUTRAL <br /> Operating Temp: -40°C to +60°C <br /> Storage Temp: -45°C to +85°C ORDERING INFORMATION <br /> Enclosure: White Lexan <br /> Base: Phenolic Part Number: LPR-1 <br /> 2464 Vulcan Road, Apopka, Florida 32703 * (407) 299-3825 • www.mpelectronics.com <br />