Liquid Level Switches
Liquid level switches are used to detect and control the level of liquids in tanks, reservoirs & pipelines to monitor and maintain desired liquid levels. They work on the principle
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Liquid Level Switches
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HBARKSDALE -
Liquid Level Switches
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DMADISON -
Stainless Steel Single-Point Liquid Level Switches
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N| Style | Model | Contact Form | Float Material | Float Length | Float Dia. | Body Material | Operating Temp. | Mounting | Max. Current | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A | M4190 | €494.99 | |||||||||
| B | M4190-HP | €448.31 | |||||||||
| C | M4190-BU | €453.45 | |||||||||
| D | MS5917 | €141.41 | |||||||||
| E | MSB5600 | €257.53 | |||||||||
| F | M5920 | €221.55 | |||||||||
| G | MS8800 | €89.10 | |||||||||
| H | MS8000 | €39.27 | |||||||||
| I | M5000 | €86.60 | |||||||||
| J | MS9000 | €52.41 | |||||||||
| K | M5600-PR | €165.07 | |||||||||
| L | MS5010 | €164.03 | |||||||||
| M | M5010 | €103.94 | |||||||||
| N | MS7000 | €38.24 |
MADISON -
Adjustable-Level Liquid Level Switches
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C| Style | Model | Float Material | Float Length | Float Dia. | Body Material | Operating Temp. | Stem Material | Stem Length | Float Specific Gravity | Price | |
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| A | M4302-7807-6 | €230.28 | |||||||||
| B | M5602-7808-1 | €397.97 | |||||||||
| C | M5602-7808-6 | €371.68 |
MADISON -
Plastic Single-Point Liquid Level Switches
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Y| Style | Model | Float Length | Float Dia. | Body Material | Operating Temp. | Mounting | Float Material | Max. Current | Stem Material | Price | |
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| A | M8750 | €30.48 | |||||||||
| B | M8705 | €63.22 | |||||||||
| C | M8710 | €81.90 | |||||||||
| D | M8790 | €29.20 | |||||||||
| E | M7000 | €28.27 | |||||||||
| F | M4010 | €89.95 | |||||||||
| G | M5970 | €188.76 | |||||||||
| H | M9000 | €46.82 | |||||||||
| I | M8000B | €49.34 | |||||||||
| J | M8000 | €23.76 | |||||||||
| K | MSB8800 | €150.95 | |||||||||
| L | M4300 | €86.63 | |||||||||
| M | M5910 | €235.04 | |||||||||
| N | M8800 | €86.81 | |||||||||
| O | M5900 | €236.38 | |||||||||
| P | M8700-C | €31.15 | |||||||||
| Q | M5917 | €154.83 | |||||||||
| R | M9705 | €87.01 | |||||||||
| S | M9700 | €52.31 | |||||||||
| T | M7790 | €41.08 | |||||||||
| U | M7725 | €41.38 | |||||||||
| V | M7750 | €38.11 | |||||||||
| W | M7700 | €32.73 | |||||||||
| X | M7740 | €38.61 | |||||||||
| Y | M8700 | €21.75 |
MADISON -
Open On Rise Liquid Level Switch
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HMADISON -
Selectable Multi-level Liquid Level Switch
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CTELEMECANIQUE SENSORS -
Close On Rise Liquid 2-Level Switch
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C| Style | Model | Float Dia. | Operating Temp. | Mounting | Height | Float Position | Float Travel | Switch Function | Float Material | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A | 9038CG36N4LZ20 | €867.24 | |||||||||
| B | 9038CG36N4 | €1,010.89 | |||||||||
| C | 9038AG1N4 | €465.40 |
MADISON -
Close On Rise Liquid Level Switch
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CD| Style | Model | Float Material | Float Length | Float Dia. | Body Material | Operating Temp. | Mounting | Max. Current | Stem Material | Price | |
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| A | M3326-NO | €41.38 | |||||||||
| B | M3326-NPT-NO | €57.01 | |||||||||
| C | M8000-NO | €24.05 | |||||||||
| D | M3827-2NO | €156.51 | |||||||||
| D | M3827-3NO | €163.54 |
MADISON -
Close On Rise Drum Liquid Level Switch
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BMADISON -
Open On Rise Ultra Low Level Liquid Switch
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D| Style | Model | Float Material | Float Length | Body Material | Stem Material | Float Specific Gravity | Switch Function | Contact Form | Float Dia. | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A | M4400-ULL-NC | €99.43 | |||||||||
| B | M9000-ULL-NC | €70.70 | |||||||||
| C | M8020-ULL-NC | €74.68 | |||||||||
| D | M8000-ULL-NC | €70.70 |
TELEMECANIQUE SENSORS -
Close On Rise Liquid Level Switch
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B| Style | Model | Float Dia. | Body Material | Mounting | Height | Conduit Size | Float Position | Float Travel | Switch Function | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A | 9038CW33 | - | RFQ | ||||||||
| B | 9036DG2S12 | €161.97 |
MADISON -
Selectable Liquid Level Switch
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FMADISON -
Open On Rise Drum Liquid Level Switch
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BMADISON -
Selectable Drum Liquid Level Switch
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BMADISON -
Close On Rise Ultra Low Level Liquid Switch
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EFG| Style | Model | Float Material | Float Length | Body Material | Stem Material | Float Specific Gravity | Switch Function | Contact Form | Float Dia. | Price | |
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| A | M7000-ULL-NO | €100.91 | |||||||||
| B | M4400-ULL-NO | €83.98 | |||||||||
| C | M4500-ULL-NO | €87.23 | |||||||||
| D | M9000-ULL-NO | €87.35 | |||||||||
| E | M4400-PBT-ULL-NO | €66.59 | |||||||||
| A | M7000-PBT-ULL-NO | €66.23 | |||||||||
| F | M8000-ULL-NO | €68.17 | |||||||||
| G | M8020-ULL-NO | €74.90 |
MADISON -
Open On Rise Multi-level Liquid Level Switch
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BPROSENSE -
Vibration Fork Liquid Level Switch, Any Orientation Mount, 1.89 Inch Insertion Length
| Model | Item | Price (ex. VAT) | |
|---|---|---|---|
| VFL75-150S-3H | CV8CGA | €329.40 |
PROSENSE -
Float Liquid Level Switch, Horizontal Side Mount, 2.75 Inch Insertion Length
| Model | Item | Price (ex. VAT) | |
|---|---|---|---|
| FLS-HM-700 | CV8BDY | €38.70 |
PROSENSE -
Float Liquid Level Switch, Horizontal Side Mount, 2.96 Inch Insertion Length
| Model | Item | Price (ex. VAT) | |
|---|---|---|---|
| FLS-HM-600 | CV8BDX | €48.60 |
PROSENSE -
Float Liquid Level Switch, Horizontal Side Mount, 2.75 Inch Insertion Length
| Model | Item | Price (ex. VAT) | |
|---|---|---|---|
| FLS-HM-500 | CV8BDW | €44.10 |
Working Mechanism
- Mount the level switch at the desired level in the container or tank.
- Make sure the float can move up and down as the liquid level changes.
- As the liquid level rises, the float will also rise, activating the switch mechanism.
- The switch can be connected to a control system or pump to perform the desired action, such as stopping or starting a process.
Frequently Asked Questions
What is the difference between a normally open (NO) and normally closed (NC) liquid level switch?
A normally open (NO) liquid level switch stays in the open state when the liquid level is below the set threshold and closes the circuit when the liquid level rises to the desired level. A normally closed (NC) switch operates oppositely, being in a closed state when the liquid level is below the threshold and opening the circuit when the liquid level reaches the set level.
Why do some people use multiple liquid level switches in the same tank?
Utilising multiple liquid level switches in the same tank provides redundancy and more precise level control. They can be wired in parallel or series, depending on the desired functionality.
How do I troubleshoot a liquid level switch that is not functioning properly?
Troubleshooting measures include checking electrical connections, verifying power supply, inspecting for damage or debris affecting switch operation and ensuring proper switch calibration.
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