Distributed by: T&C Industrial Controls, Inc.
1121 N. Cedar St. * Glendale, CA 91207 USA
(818) 240-3600 * FAX (818) 547-9359
Email to: tcindust@flash.net

Manufactured by: SSAC Inc.
P.O. Box 1000 * Baldwinsville, NY 13027
(315) 638-0333 * FAX (315) 638-7158

LLC1 Series

Low Cost
Two Modes: Fill or Drain
Built-in Time Delay to Prevent Rapid Cycling
PC Board Protected Against Moisture and Corrosion
Sense Resistance Factory Fixed or Adjustable
Electromechanical Relay Output
UL and CSA

Description

The LLC1 Series is a low cost single probe resistance sensing device designed to maintain a level of liquid. LLC1 can be ordered in one of two modes: Fill or Drain - and is available with built-in time delay to prevent rapid cycling. The output is an electromechanical relay which helps to ensure against an output failure and an overflow condition. Quality and reliablity at the right price.

SPECIFICATIONS

1. Control

1.1 Type: ON/OFF Resistance sensor with built-in time delay. *(See Ordering Information)
1.2 Sense Voltage: 12 volts AC nominal at probe terminals
1.3 Sense Resistance: Factory fixed or adjustable to 250,000 ohms
1.4 Sense Resistance Tolerance: Adjustable: Guaranteed Range Factory Fixed: +/- 10%

2. Operating Voltage (Input)

2.1 Voltage: 24, 120, or 243 volts AC
2.2 Tolerance: +/- 15%
2.3 Frequency: 50/60 Hertz

3. Output

3.1 Type: Electromechanical relay
3.2 Form: SPST non-isolated and SPDT isolated
3.3 Rating: 10 amps resistive at 240VAC

4. Protection

4.1 Transient Protected
4.2 Dielectric Breakdown: 1500 volts RMS minimum

5. Mechanical

5.1 Mounting: Surface mounting to probe COMMON with two #6 screws or 3/8 inch nylon standoffs in tripod configuration with three #6 screws (use Terminal 5 for probe Common)
5.2 Termination: 1/4 inch male quick connect terminals

6. Environment

6.1 Operating Temperatures: -20 deg. C to +60 deg. C
Storage Temperature: -40 deg. C to +80 deg. C
6.2 Protection: Printed circuit board is conformal coated to resist moisture and corrosion

CONNECTION

OPERATION

MODE OF OPERATION A- Drain Type: As long as liquid does not come in contact with the probe, the relay contacts remain in an unenergized position. If liquid rises to probe level, a fixed time delay* will be initiated. At the end of the time delay, the relay contacts will transfer to the energized position. They will remain in this position as long as the probe is in contact with the liquid. If the liquid drops below the probe, the relay will immediately de-energize.

MODE OF OPERATION B- Fill Type: As long as liquid remains in contact with the probe, the relay contacts will remain in an unenergized position. If liquid drops below the probe level, a fixed time delay* will be initiated. At the end of the time delay, the relay contacts will transfer to the energized position. They will remain in this position until the level of the liquid reaches the probe again. When this occurs, the relay immediately de-energizes.

*Note: The purpose of the time delay is to prevent rapid cycling of the relay and its associated load in cases where the liquid is turbulent.

MECHANICAL

ORDERING INFORMATION
Series	Operating Voltage	Logic Type	Time Delay	Sense Resistance	Mounting
LLC1	2- 24VAC 4- 120VAC 6- 230VAC	A- Drain B- Fill	Specify fixed delay in seconds (1-60 sec.)	A- Adjustable F- Fixed (Specify fixed resistance in 1k ohm increments) 250k ohms maximum	Blank- Surface Mount X- 3/8 inch nylon standoffs (three)

Example Part Number: LLC14A7A is a single probe liquid level control with an operating voltage of 120 volts AC and a Drain logic type. It has a fixed delay of 7 seconds and has an adjustable sensitivity on the unit. Surface mounting method (standoffs not included).