Level Switches
Liquid level switches detect when a liquid reaches a set point in tanks, sumps and vessels. They control pumps and valves and trigger high and low alarms.
Level Switch Types
- Float switches – simple, reliable switching
- Vibrating fork switches – unaffected by foam or turbulence
- Conductivity switches – conductive liquids
- Optical switches – compact point detection
- Capacitive switches – liquids and slurries
Choosing a Switch
Consider liquid type, temperature, pressure, buildup and mounting. Use an independent high-level switch for overfill protection.
Centro supplies liquid level switches for tanks and sumps.
Related categories: Liquid Level | Level Sensors | Differential Pressure Control | Water Gauges | Radar
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The Pulse Point II (LPII) is a compact capacitance probe point level switch designed for dry bulk powders and granules. It detects material presence or absence at the probe tip by sensing the change in capacitance when material contacts the probe. The LPII-SG variant is a straight single-point probe with a SPDT relay output. It requires simple single-point calibration with the probe in free air. Ideal for materials that are challenging for mechanical paddle switches (very fine powders, high-speed fill applications) or where a flush-mount, probe-style sensor is preferred.
$1,177.03
Available for Purchase
Subject to factory lead times
Clark Reliance Levelarm, Gold Float-Type Switch, 1" FNPT Connections, applications up to 500 PSI MAWP.
$4,809.08
Available for Purchase
Subject to factory lead times
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Kit, 4th Level for ML4444, Blue Leads
$167.40$210.00
Available for Purchase
Subject to factory lead times
Kit, 3rd and 4th Levels for ML4444, White and Blue Leads
$334.79$420.00
Available for Purchase
Subject to factory lead times
Miniature Liquid Level Switch, Teflon Stem, Stainless Steel Float, with 1/8" NPT and 24" Leads
$148.27$186.00
In Stock (24)Ships within 1 business day
SIDE MOUNTED KYNAR LLS, 2 THREADS, 1/2" NPT
$38.27$48.00
In Stock (203)Ships within 1 business day
MULTI-LEVEL KIT, Full Size, Buna Float and 2" NPT Brass Stem, 2 Levels, 43 1/8" Max. Length
$361.10$453.00
In Stock (20)Ships within 1 business day
Kit, 3rd Level for ML4444, White Leads
$167.40$210.00
Available for Purchase
Subject to factory lead times
MULTI-LEVEL KIT, Full Size, 316 Stainless Steel Float and 2" NPT Stem, 2 Levels, 43 1/8" Max. Length
$598.64$751.00
In Stock (24)Ships within 1 business day
Kit, 3rd Level for ML5555, White Leads
$271.82$341.00
Available for Purchase
Subject to factory lead times
Kit, 4th Level for ML5555, Blue Leads
$271.82$341.00
Available for Purchase
Subject to factory lead times
Kit, 3rd and 4th Levels for ML5555, White and Blue Leads
$543.64$682.00
Available for Purchase
Subject to factory lead times
MULTI-LEVEL KIT, Full Size, Polypropylene Float and Polypropylene Stem, 2 Levels
$403.35$506.00
In Stock (36)Ships within 1 business day
Kit, 3rd Level for ML8888, White Leads
$94.86$119.00
Available for Purchase
Subject to factory lead times
Kit, 4th Level for ML8888, Blue Leads
$94.86$119.00
Available for Purchase
Subject to factory lead times
Kit, 3rd and 4th Levels for ML8888, White and Blue Leads
$189.72$238.00
Available for Purchase
Subject to factory lead times
M5000 with SLOSH SHIELD
$121.96$153.00
Available for Purchase
Subject to factory lead times
Micro Miniature Liquid Level Switch, Polypropylene Float, Polypropylene Stem, Normally Closed
$33.48$42.00
In Stock (275)Ships within 1 business day
Micro Miniature Liquid Level Switch, Polypropylene Float, Polypropylene Stem, Normally Open
$31.48$42.00
In Stock (419)Ships within 1 business day
Micro Miniature Liquid Level Switch with 1/8'' NPT, Polypropylene Float, Polypropylene Stem, Normally Closed
$37.47$47.00
Available for Purchase
Subject to factory lead times
Micro Miniature Liquid Level Switch with 1/8'' NPT, Polypropylene Float, Polypropylene Stem, Normally Open
$37.47$47.00
Available for Purchase
Subject to factory lead times
INTERSTITIAL SWITCH, PBT Housing, Buna Float, 10 Foot Cable
$133.12$167.00
Low Stock (3)Ships within 1 business day
Single Level, Suspendable, Submersible LLS, Brass Stem, Buna Float with 20 Foot Cable and Watertight Fitting, Normally Closed
$119.38$156.00
In Stock (56)Ships within 1 business day
CONDUCTIVITY SWITCH KIT WITH 110 VAC CONTROLLER, POLYPRO, 1 INCH NPT
$434.43$545.00
Available for Purchase
Subject to factory lead times
The Pulse Point II (LPII) is a compact capacitance probe point level switch designed for dry bulk powders and granules. It detects material presence or absence at the probe tip by sensing the change in capacitance when material contacts the probe. The LPII-SG variant is a straight single-point probe with a SPDT relay output. It requires simple single-point calibration with the probe in free air. Ideal for materials that are challenging for mechanical paddle switches (very fine powders, high-speed fill applications) or where a flush-mount, probe-style sensor is preferred.
$1,177.03
Available for Purchase
Subject to factory lead times
Clark Reliance Levelarm, Gold Float-Type Switch, 1" FNPT Connections, applications up to 500 PSI MAWP.
$4,809.08
Available for Purchase
Subject to factory lead times
Kit, 4th Level for ML4444, Blue Leads
$167.40$210.00
Available for Purchase
Subject to factory lead times
Kit, 3rd and 4th Levels for ML4444, White and Blue Leads
$334.79$420.00
Available for Purchase
Subject to factory lead times
Miniature Liquid Level Switch, Teflon Stem, Stainless Steel Float, with 1/8" NPT and 24" Leads
$148.27$186.00
In Stock (24)Ships within 1 business day
SIDE MOUNTED KYNAR LLS, 2 THREADS, 1/2" NPT
$38.27$48.00
In Stock (203)Ships within 1 business day
MULTI-LEVEL KIT, Full Size, Buna Float and 2" NPT Brass Stem, 2 Levels, 43 1/8" Max. Length
$361.10$453.00
In Stock (20)Ships within 1 business day
Kit, 3rd Level for ML4444, White Leads
$167.40$210.00
Available for Purchase
Subject to factory lead times
MULTI-LEVEL KIT, Full Size, 316 Stainless Steel Float and 2" NPT Stem, 2 Levels, 43 1/8" Max. Length
$598.64$751.00
In Stock (24)Ships within 1 business day
Kit, 3rd Level for ML5555, White Leads
$271.82$341.00
Available for Purchase
Subject to factory lead times
Kit, 4th Level for ML5555, Blue Leads
$271.82$341.00
Available for Purchase
Subject to factory lead times
Kit, 3rd and 4th Levels for ML5555, White and Blue Leads
$543.64$682.00
Available for Purchase
Subject to factory lead times
MULTI-LEVEL KIT, Full Size, Polypropylene Float and Polypropylene Stem, 2 Levels
$403.35$506.00
In Stock (36)Ships within 1 business day
Kit, 3rd Level for ML8888, White Leads
$94.86$119.00
Available for Purchase
Subject to factory lead times
Kit, 4th Level for ML8888, Blue Leads
$94.86$119.00
Available for Purchase
Subject to factory lead times
Kit, 3rd and 4th Levels for ML8888, White and Blue Leads
$189.72$238.00
Available for Purchase
Subject to factory lead times
M5000 with SLOSH SHIELD
$121.96$153.00
Available for Purchase
Subject to factory lead times
Micro Miniature Liquid Level Switch, Polypropylene Float, Polypropylene Stem, Normally Closed
$33.48$42.00
In Stock (275)Ships within 1 business day
Micro Miniature Liquid Level Switch, Polypropylene Float, Polypropylene Stem, Normally Open
$31.48$42.00
In Stock (419)Ships within 1 business day
Micro Miniature Liquid Level Switch with 1/8'' NPT, Polypropylene Float, Polypropylene Stem, Normally Closed
$37.47$47.00
Available for Purchase
Subject to factory lead times
Micro Miniature Liquid Level Switch with 1/8'' NPT, Polypropylene Float, Polypropylene Stem, Normally Open
$37.47$47.00
Available for Purchase
Subject to factory lead times
INTERSTITIAL SWITCH, PBT Housing, Buna Float, 10 Foot Cable
$133.12$167.00
Low Stock (3)Ships within 1 business day
Single Level, Suspendable, Submersible LLS, Brass Stem, Buna Float with 20 Foot Cable and Watertight Fitting, Normally Closed
$119.38$156.00
In Stock (56)Ships within 1 business day
CONDUCTIVITY SWITCH KIT WITH 110 VAC CONTROLLER, POLYPRO, 1 INCH NPT
$434.43$545.00
Available for Purchase
Subject to factory lead times