LEVEL CONTROL RELAYS
Single & Dual Probe
LCP Series Plug-in
LCP Series Level Control Relays are used for single & dual probe level control of conductive
liquids (tap water, sea water, sewage, chemical solutions, coffee, ice cream, etc.) in pump
up or pump down applications. The probes used are typically liquid level inputs that sense a
decrease in resistance between the probes when liquid contacts the sensors. These units
are available with adjustable sensitivity set points to control levels in fluids having an
external resistance. A built-in time delay prevents rapid cycling (Single Probe units only).
Four versions are available:
Controls Level of Conductive
Liquids in Pump Up (Fill) or
Pump Down (Drain)
Applications
Single or Dual Probe
Factory-Fixed Time Delay of 160 Seconds Prevents Rapid
Cycling (Single Probe only)
4.7K - 100K & 1K - 250K
Adjustable Sensitivity Ranges
Single Probe:
Pump Up (Fill): When the liquid level falls below the probe, a fixed time delay begins. At
the end of the time delay, the output relay & LED energize and remain energized until the
liquid level rises & touches the probe. The output relay & LED de-energize and remain
de-energized until the liquid level falls below the probe
Pump Down (Drain): When the liquid level rises & touches the probe, a fixed time delay
begins. At the end of the time delay, the output relay & LED energize and remain
energized until the liquid level falls below the probe level. The output relay & LED deenergize and remain de-energized until the liquid level rises & touches the probe.
Dual Probe:
Pump Up (Fill): When the liquid level falls below the low level probe, the output relay &
LED energize and remain energized until the liquid level rises & touches the high level
probe. The output relay & LED de-energize and remain de-energized until the liquid
level again falls below the low level probe.
Pump Down (Drain): When the liquid level rises & touches the high level probe, the
output relay & LED energize and remain energized until the liquid level falls below the
low level probe. The output relay & LED de-energize and remain de-energized until the
liquid level rises & touches the high level probe.
Uses industry-standard 8 pin
octal socket
Single Probe
FUNCTION
with
appropriate
socket
PUMP UP
(FILL)
PUMP DOWN
(DRAIN)
INPUT
VOLTAGE
SENSITIVITY
RANGE
PRODUCT
NUMBER
120V AC
4.7K to 100K
1K to 250K
LCP2A100F
LCP2A250F
240V AC
4.7K to 100K
1K to 250K
LCP1A100F
LCP1A250F
120V AC
4.7K to 100K
1K to 250K
LCP2B100F
LCP2B250F
240V AC
4.7K to 100K
1K to 250K
LCP1B100F
LCP1B250F
WIRING/
SOCKET
8 Pin Octal
70169-D
DIAGRAM 203
Dual Probe
FUNCTION
PUMP UP
(FILL)
PUMP DOWN
(DRAIN)
800-238-7474
www.macromatic.com
sales@macromatic.com
1
INPUT
VOLTAGE
SENSITIVITY
RANGE
PRODUCT
NUMBER
WIRING/
SOCKET
120V AC
4.7K to 100K
1K to 250K
LCP2C100
LCP2C250
8 Pin Octal
70169-D
240V AC
4.7K to 100K
1K to 250K
LCP1C100
LCP1C250
120V AC
4.7K to 100K
1K to 250K
LCP2D100
LCP2D250
240V AC
4.7K to 100K
1K to 250K
LCP1D100
LCP1D250
DIAGRAM 197
(Single Probe only) Complete Product Number by adding time delay in one second
increments between 1 & 60, i.e., LCP2A100F2 is a Single Probe Relay, 120V Input
Voltage, 4.7K-100K Sensitivity with a Fixed 2 Second Delay (Dual Probe Relays only
come with a Fixed 50ms time delay and therefore no F suffix is required)
Application Data & Dimensions Page 2
Sockets & Accessories See Macromatic Catalog
12/12
LEVEL CONTROL RELAYS
Single & Dual Probe
LCP Series Plug-in
Applicat ion Data & Dim ensions
Application Data
Voltage Tolerance:
AC Operation: +10/-15% of nominal at 50/60 Hz.
Temperature:
-28o to 65oC (-18o to 149oF)
Load (Burden):
1.2 VA
Output Contacts:
10A @ 240V AC / 7A @ 30V DC, 1/4HP @ 120/240V AC
Probe Voltage:
9V DC
Life:
Mechanical: 10,000,000 operations
Full Load: 100,000 operations
Sensing Resistance:
4.7K - 100K or 1K - 250K
Response Time:
Pick-up:
Single Probe Fixed in one second increments from 1-60
seconds (Minimum Quantities may apply)
Dual Probe
50ms
Drop-out: 50ms
LED Indicator:
Red ON when relay energized
Insulation Voltage:
2,000 volts
Mounting
Requires Industry-Standard 8 Pin Octal Socket
Approvals:
File #E109466
with
appropriate
socket
Low Voltage &
EMC Directives
EN60947-1, EN60947-5-1
File #E109466
Dimensions
All Dimensions in
Inches (Millimeters)
2.4
(60)
2.9
(74)
1.7
(43)
12/12
3.2
(80)
2