LLC1 Series – Open Board Liquid Level Controls Series - Littelfuse LLC1 Open Board Liquid Level Controls Provide Superior Protection

Baureihe: LLC1 Series – Open Board Liquid Level Controls
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The LLC1 series is a single-probe, conductive liquid level control designed for OEM equipment and commercial appliance applications. This unit may be ordered with fixed-fill or fixed-drain operation. A time delay (1-60 s) prevents rapid cycling of the output relay. On adjustable units, the sensitivity adjustment allows accurate level sensing while ignoring foaming agents and floating debris. Isolated ac voltage is provided at the probe to prevent electrolysis. A trickle current of less than 1 mA determines the presence or absence of liquid between the probe and common. The LLC1 series printed circuit board is conformally coated to resist moisture and corrosion.

Funktionsweise
Drain (pump-down mode): When the liquid level rises and touches the probe, a fixed time delay begins. This time delay prevents rapid cycling of the output relay and its load. At the end of the time delay, the output relay energizes and remains energized until the liquid level falls below the probe. The output relay then de-energizes and remains de-energized until the liquid again touches the probe.

Fill (pump-up mode): When the liquid level falls below the probe, a fixed time delay begins. This time delay prevents rapid cycling of the output relay and its load. At the end of the time delay, the output relay energizes and remains energized until the liquid level rises and touches the probe. The output relay then de-energizes and remains de-energized until the liquid level again falls below the probe.

Eigenschaften

  • Isolated ac voltage on probe
  • Open PCB design
  • Conformally coated PCB
  • Sensitivity adjustment

Produktliteratur

Bei technischen Fragen

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Catalog #Input
Voltage (V)		Output
Form		Time Delay RangeTermination TypeMounting MethodDimensionsWeight (lbs/g)Control TypeInput AC Line Frequency (Hz)Input Tolerance (%)Output Load Rating (VA)Output TypeSense Resistance ToleranceSense Resistance (Ohms)Sense VoltageStockSamplesCompare
Katalog-Nr.Eingang
Spannung (V)		Ausgang
Wechsler		ZeitverzögerungsspanneKlemmenartMontagemethodeAbmessungenGewicht (Pfd./g)Control TypeInput AC Line Frequency (Hz)Input Tolerance (%)Output Load Rating (VA)AusgabeartSense Resistance ToleranceFühlerwiderstand (Ohm)Sense VoltageBeständeMusterVergleichen
LLC14A1AX 120 VacNon-isolated SPST and isolated SPDT contacts1 s fixed0.25 in. (6.3 mm) male quick connect terminals0.50 in. (12.7mm) nylon standoffs with three #6 (M3.5 x 0.6) screws (use terminal 5 for probe common)3.5 H x 2.75 W x 2 D in. (88.9 x 69.9 x 50.9 mm)0 kgON/OFF (single level) resistance sensor with built-in time delay to prevent rapid cycling50 / 60-0.310 A resistive @ 120/240 Vac and 28 Vdc; 1/3 hp @ 120/240 VacElectromechanical relayGuaranteed rangeAdjustable to 250Low voltage AC between probe and common; isolated from input and ouputPrüfen Order
LLC14A5AX 120 VacNon-isolated SPST and isolated SPDT contacts5 s fixed0.25 in. (6.3 mm) male quick connect terminals0.50 in. (12.7mm) nylon standoffs with three #6 (M3.5 x 0.6) screws (use terminal 5 for probe common)3.5 H x 2.75 W x 2 D in. (88.9 x 69.9 x 50.9 mm)0 kgON/OFF (single level) resistance sensor with built-in time delay to prevent rapid cycling50 / 60-0.310 A resistive @ 120/240 Vac and 28 Vdc; 1/3 hp @ 120/240 VacElectromechanical relayGuaranteed rangeAdjustable to 250Low voltage AC between probe and common; isolated from input and ouputPrüfen Order
LLC14B15AX 120 VacNon-isolated SPST and isolated SPDT contacts15 s fixed0.25 in. (6.3 mm) male quick connect terminals0.50 in. (12.7mm) nylon standoffs with three #6 (M3.5 x 0.6) screws (use terminal 5 for probe common)3.5 H x 2.75 W x 2 D in. (88.9 x 69.9 x 50.9 mm)0 kgON/OFF (single level) resistance sensor with built-in time delay to prevent rapid cycling50 / 60-0.310 A resistive @ 120/240 Vac and 28 Vdc; 1/3 hp @ 120/240 VacElectromechanical relayGuaranteed rangeAdjustable to 250Low voltage AC between probe and common; isolated from input and ouputPrüfen Order
LLC14B1AX 120 VacNon-isolated SPST and isolated SPDT contacts1 s fixed0.25 in. (6.3 mm) male quick connect terminals0.50 in. (12.7mm) nylon standoffs with three #6 (M3.5 x 0.6) screws (use terminal 5 for probe common)3.5 H x 2.75 W x 2 D in. (88.9 x 69.9 x 50.9 mm)0 kgON/OFF (single level) resistance sensor with built-in time delay to prevent rapid cycling50 / 60-0.310 A resistive @ 120/240 Vac and 28 Vdc; 1/3 hp @ 120/240 VacElectromechanical relayGuaranteed rangeAdjustable to 250Low voltage AC between probe and common; isolated from input and ouputPrüfen Order
LLC14B60AX 120 VacNon-isolated SPST and isolated SPDT contacts60 s fixed0.25 in. (6.3 mm) male quick connect terminals0.50 in. (12.7mm) nylon standoffs with three #6 (M3.5 x 0.6) screws (use terminal 5 for probe common)3.5 H x 2.75 W x 2 D in. (88.9 x 69.9 x 50.9 mm)0 kgON/OFF (single level) resistance sensor with built-in time delay to prevent rapid cycling50 / 60-0.310 A resistive @ 120/240 Vac and 28 Vdc; 1/3 hp @ 120/240 VacElectromechanical relayGuaranteed rangeAdjustable to 250Low voltage AC between probe and common; isolated from input and ouputPrüfen Order
LLC16A25AX 230 VacNon-isolated SPST and isolated SPDT contacts25 s fixed0.25 in. (6.3 mm) male quick connect terminals0.50 in. (12.7mm) nylon standoffs with three #6 (M3.5 x 0.6) screws (use terminal 5 for probe common)3.5 H x 2.75 W x 2 D in. (88.9 x 69.9 x 50.9 mm)0 kgON/OFF (single level) resistance sensor with built-in time delay to prevent rapid cycling50 / 60-0.310 A resistive @ 120/240 Vac and 28 Vdc; 1/3 hp @ 120/240 VacElectromechanical relayGuaranteed rangeAdjustable to 250Low voltage AC between probe and common; isolated from input and ouputPrüfen Order
LLC16A3AX 230 VacNon-isolated SPST and isolated SPDT contacts3 s fixed0.25 in. (6.3 mm) male quick connect terminals0.50 in. (12.7mm) nylon standoffs with three #6 (M3.5 x 0.6) screws (use terminal 5 for probe common)3.5 H x 2.75 W x 2 D in. (88.9 x 69.9 x 50.9 mm)0 kgON/OFF (single level) resistance sensor with built-in time delay to prevent rapid cycling50 / 60-0.310 A resistive @ 120/240 Vac and 28 Vdc; 1/3 hp @ 120/240 VacElectromechanical relayGuaranteed rangeAdjustable to 250Low voltage AC between probe and common; isolated from input and ouputPrüfen Order
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