LIQUID LEVEL CONTROL RELAYS

LCP Series Liquid Level Control Relays regulate levels of conductive liquids in pump up (fill) or pump down (drain) applications. The output of the relay controls pumps, solenoids, or valves to lower, raise or maintain the liquid level in the tank. Typical liquids include tap water, seawater, sewage, irrigation, chemical and pharmaceutical solutions, beer, coffee, and ice cream.

Precisely Raise, Lower or Maintain Conductive Fluid Levels

The probe is pulsed with DC voltage to prevent potential electroplating. An LED indicates energization status. Choose from two adjustable sensitivity ranges based on fluid. Mounting requires an industry standard 8 pin octal socket. Choose from Single Probe or Dual Probe configurations.

SINGLE PROBE

On single probe models, a fixed time delay prevents rapid cycling of the output relay and its load. Ten factory settings ranging from 1 to 60 seconds.

DUAL PROBE

Dual probe models are available with specific pin configurations to match competitive devices.

Function:

Fixed Time Delay – Seconds:

Control Voltage

Sensitivity Range:

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LCP Series

Function Output:

Single Probe Pump Down

Control Voltage:

24V AC

Fixed Time Delay:

30s

Sensitivity Range:

Sensitivity Range: 1K – 250K Ohms

$102.08

LCP Series

Function Output:

Single Probe Pump Down

Control Voltage:

24V AC

Fixed Time Delay:

4s

Sensitivity Range:

Sensitivity Range: 1K – 250K Ohms

$102.08

LCP Series

Function Output:

Single Probe Pump Down

Control Voltage:

24V AC

Fixed Time Delay:

5s

Sensitivity Range:

Sensitivity Range: 1K – 250K Ohms

$102.08

LCP Series

Function Output:

Single Probe Pump Down

Control Voltage:

24V AC

Fixed Time Delay:

60s

Sensitivity Range:

Sensitivity Range: 1K – 250K Ohms

$102.08

LCP Series

Function Output:

Dual Probe Pump Up (w/ Pin Configuration = SSAC & NCC unit)

Control Voltage:

24V AC

Fixed Time Delay:

Sensitivity Range:

Sensitivity Range: 4.7K – 100K Ohms

$108.20

LCP Series

Function Output:

Dual Probe Pump Up (w/ Pin Configuration = SSAC & NCC unit)

Control Voltage:

24V AC

Fixed Time Delay:

Sensitivity Range:

Sensitivity Range: 1K – 250K Ohms

$108.20

LCP Series

Function Output:

Dual Probe Pump Down (w/ Pin Configuration = SSAC & NCC unit)

Control Voltage:

24V AC

Fixed Time Delay:

Sensitivity Range:

Sensitivity Range: 4.7K – 100K Ohms

$108.20

LCP Series

Function Output:

Dual Probe Pump Down (w/ Pin Configuration = SSAC & NCC unit)

Control Voltage:

24V AC

Fixed Time Delay:

Sensitivity Range:

Sensitivity Range: 1K – 250K Ohms

$108.20

LCP Series

Function Output:

Dual Probe Pump Up (w/ Pin Configuration = Crouzet & Symcom unit)

Control Voltage:

24V AC

Fixed Time Delay:

Sensitivity Range:

Sensitivity Range: 4.7K – 100K Ohms

$108.20

LCP Series

Function Output:

Dual Probe Pump Up (w/ Pin Configuration = Crouzet & Symcom unit)

Control Voltage:

24V AC

Fixed Time Delay:

Sensitivity Range:

Sensitivity Range: 1K – 250K Ohms

$108.20

LCP Series

Function Output:

Dual Probe Pump Down (w/ Pin Configuration = Crouzet & Symcom unit)

Control Voltage:

24V AC

Fixed Time Delay:

Sensitivity Range:

Sensitivity Range: 4.7K – 100K Ohms

$108.20

LCP Series

Function Output:

Dual Probe Pump Down (w/ Pin Configuration = Crouzet & Symcom unit)

Control Voltage:

24V AC

Fixed Time Delay:

Sensitivity Range:

Sensitivity Range: 1K – 250K Ohms

$108.20

Frequently Asked Questions About Liquid Level Control Relays

Actual resistivity of ligiid varies and should be calibrated once installed. Standard resistivity values for common liquids can be found here.
Macromatic maintains an extensive cross reference database. Follow the link here.
Level probes can be made from any conductive material. The head of a bolt through the sidewall or a threaded rod suspended from above are often used as probes with wires attached using ring terminals.

Liquid Level Control Relays Downloads

Macromatic’s Certificate of Compliance

Liquid Levels Control Relay

Knowledge Base Articles

Technical reports to answer your questions

Using Liquid Level Control Relays

Liquid Level Control Relays detect & control levels of conductive liquids such as fresh water, seawater, sewage & coffee (see table below for other liquids). They provide a low voltage signal (typically 5VDC pulsed to prevent electroplating issues) to a probe or probes and a common connection on the tank. The

Using Liquid Level Control Relays

Liquid Level Control Relays detect & control levels of conductive liquids such as fresh water, seawater, sewage & coffee (see table below for other liquids). They provide a low voltage signal (typically 5VDC pulsed to prevent electroplating issues) to a probe or probes and a common connection on the tank. The

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