MADISON Liquid Level Switches

Point-level float switches featuring reed switch technology to externally control an alarm or an ON / OFF switch and field-adjustable stem lengths (on selected models) for using just one sensor in multiple drums. Available in close-on-rise & open-on-rise configurations

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Madison liquid level switches regulate and monitor the oil or water level in a container. These units float on the top of the liquid surface and notify users when the liquid surface goes up or down. They are used in pumps, valves or alarms.

MADISON -

Stainless Steel Single-Point Liquid Level Switches

StyleModelMountingBody MaterialConduit SizeOperating Temp. RangeOverall LengthStem LengthStem MaterialVA RatingPrice (inc. GST)
AMS5010Horizontal316 Stainless Steel3/8-24"392 Degrees F Max.2.96"2.96"316 SS30A$ 184.14
BM4190Horizontal304 Stainless Steel1"302 Degrees F Max.5.81"5.81"304 SS100A$ 670.98
CM4190-HPHorizontal304 Stainless Steel1"302 Degrees F Max.3.98"3.98"304 SS100A$ 607.24
DM4190-BUHorizontal304 Stainless Steel1"221 Degrees F Max.4.43"4.43"Buna N100A$ 671.51
EM5010Horizontal316 Stainless Steel3/8-24"392 Degrees F Max.2.96"2.96"316 SS30A$ 147.25
FM5920Horizontal316 Stainless Steel1/2" x 1/2"392 Degrees F Max.4.6"4.6"316 SS30A$ 357.52
GMS5917Vertical316 Stainless Steel1/4"482 Degrees F Max.3.380"2.63"316 SS60A$ 264.95
HMS7000VerticalPBT1/8"221 Degrees F Max.2.25"1.63"PBT30A$ 66.00
IMS8000VerticalPolypropylene1/8"221 Degrees F Max.2.25"1.63"Polypropylene30A$ 68.64
JMS8800VerticalPolypropylene1/4"221 Degrees F Max.3.380"2.63"Polypropylene60A$ 155.63
KMS9000VerticalKynar1/8"221 Degrees F Max.2.25"1.63"Kynar30A$ 84.96
LMSB5600Vertical316 Stainless Steel-221 Degrees F Max.3.89"2.5"316 SS60A$ 494.69
MM5000Vertical316 Stainless Steel1/8"392 Degrees F Max.2.25"1.63"316 SS30A$ 142.71
NM5600-PRVertical316 Stainless Steel1/4"392 Degrees F Max.3.380"2.63"316 SS100A$ 228.67
MADISON -

Adjustable-Level Liquid Level Switches

StyleModelStem LengthBody MaterialFloat Dia.Stem MaterialWidthFloat MaterialHeightMax. PressurePrice (inc. GST)
AM4302-7807-110.5"Brass1.25"Brass7"Buna N12"150 psiA$ 293.19
BM5602-7808-110.5"316 Stainless Steel2.13"316 SS1.25"316 SS12"200 psiA$ 677.51
CM4302-7807-670.5"Brass1.25"Brass7"Buna N72"150 psiA$ 322.41
RFQ
DM5602-7808-670.5"316 Stainless Steel2.13"316 SS1.25"316 SS72"200 psiA$ 761.55
RFQ
MADISON -

Open On Rise Ultra Low Level Liquid Switch

StyleModelBody MaterialElectrical ConnectionsFloat MaterialStem MaterialPrice (inc. GST)
AM4400-ULL-NC316 Stainless Steel22 ga. PTFE Coated 24" LeadsBuna N316 SSA$ 173.62
BM8020-ULL-NC316 Stainless Steel22 ga. PTFE Coated 24" LeadsPolypropylene316 SSA$ 127.25
CM9000-ULL-NCKynar22 ga. PTFE Coated 24" LeadsKynarKynarA$ 130.11
DM8000-ULL-NCPolypropylene22 ga. MTW Coated 24" LeadsPolypropylenePolypropyleneA$ 118.16
MADISON -

Plastic Single-Point Liquid Level Switches

StyleModelMax. PressureBody MaterialConduit SizeMountingOperating Temp. RangeOverall LengthStem LengthStem MaterialPrice (inc. GST)
AM900015 psiKynar1/8"Vertical221 Degrees F Max.2.25"1.63"KynarA$ 59.99
BM8800100 psiPolypropylene1/4"Vertical221 Degrees F Max.3.380"2.63"PolypropyleneA$ 165.44
CM8705100 psiPolypropylene1/2" x 1"Horizontal221 Degrees F Max.4"2.84"PolypropyleneA$ 78.63
DM8750100 psiPolypropylene1/2"Horizontal221 Degrees F Max.2.75"2.75"PolypropyleneA$ 29.88
EM8790100 psiPolypropylene5/8-11"Horizontal221 Degrees F Max.4.02"2.88"PolypropyleneA$ 33.55
FM7700100 psiPBT1/2" x 1/2"Horizontal149 Degrees F Max.2.75"2.75"PBTA$ 36.08
GM8700-C100 psiPolypropylene1/2"Horizontal221 Degrees F Max.2.75"2.75"PolypropyleneA$ 35.90
HMSB8800100 psiPolypropylene-Vertical221 Degrees F Max.3.89"2.5"PolypropyleneA$ 254.23
IM9705100 psiKynar1/2" x 1"Horizontal221 Degrees F Max.4"2.84"KynarA$ 173.60
JM9700100 psiKynar1/2" x 1/2"Horizontal221 Degrees F Max.2.75"2.75"KynarA$ 64.75
KM8710100 psiPolypropylene1/4" x 1/2"Horizontal221 Degrees F Max.3.7"2.75"PolypropyleneA$ 89.85
LM7790100 psiPBT5/8-11"Horizontal266 Degrees F Max.4.02"2.84"PBTA$ 48.07
MM7750100 psiPBT1/2"Horizontal266 Degrees F Max.2.75"2.75"PBTA$ 44.51
NM7740100 psiPBT3/4-16" x 7/8-14"Horizontal266 Degrees F Max.4.3"3.31"PBTA$ 48.49
OM7725100 psiPBT1/2"Horizontal266 Degrees F Max.2.75"2.75"PBTA$ 46.24
PM5970100 psi316 Stainless Steel1/2"Horizontal392 Degrees F Max.3.19"3.19"316 SSA$ 220.59
QM4010100 psiBrass3/8-20"Horizontal221 Degrees F Max.2.96"2.96"BrassA$ 106.72
RM8700100 psiPolypropylene1/2" x 1/2"Horizontal221 Degrees F Max.2.75"2.75"PolypropyleneA$ 30.95
SM8000100 psiPolypropylene1/8"Vertical221 Degrees F Max.2.25"1.63"PolypropyleneA$ 29.72
TM8000B100 psiPolypropylene3/8-16"Vertical221 Degrees F Max.2.25"1.63"PolypropyleneA$ 79.33
UM4300150 psiBrass1/4"Vertical221 Degrees F Max.3.380"2.63"BrassA$ 131.27
VM7000150 psiPBT1/8"Vertical221 Degrees F Max.2.25"1.63"PBTA$ 38.21
WM5917200 psi316 Stainless Steel1/4"Vertical482 Degrees F Max.3.380"2.63"316 SSA$ 178.88
XM5910300 psi316 Stainless Steel1/4" x 1/2"Horizontal392 Degrees F Max.4.6"4.6"316 SSA$ 314.47
YM5900300 psi316 Stainless Steel1/2" x 1"Horizontal392 Degrees F Max.4.6"4.6"316 SSA$ 378.40
MADISON -

Open On Rise Multi-level Liquid Level Switch

StyleModelStem LengthBody MaterialConduit SizeStem MaterialVA RatingFloat Dia.Float MaterialMax. PressurePrice (inc. GST)
AM80856.75"Polypropylene1/4"Polypropylene301"Polypropylene100 psiA$ 181.81
BM56057.25"316 Stainless Steel1/2"316 SS602.13"316 SS200 psiA$ 476.19
MADISON -

Selectable Multi-level Liquid Level Switch

StyleModelWidthBody MaterialElectrical ConnectionsFloat Dia.Float MaterialMax. PressureOperating Temp. RangeStem MaterialPrice (inc. GST)
AML8888-Polypropylene23 ga. PTFE1.5"Polypropylene100 psi221 Degrees F Max.PolypropyleneA$ 829.25
BML444418"Polypropylene22 ga. PTFE1.25"Buna N150 psi221 Degrees F Max.BrassA$ 707.85
CML555543.19"316 Stainless Steel22 ga. PTFE2.125"316 SS200 psi392 Degrees F Max.316 SSA$ 1258.33
MADISON -

Close On Rise Ultra Low Level Liquid Switch

StyleModelBody MaterialElectrical ConnectionsFloat MaterialStem MaterialPrice (inc. GST)
AM4400-ULL-NO316 Stainless Steel22 ga. PTFE Coated 24" LeadsBuna N316 SSA$ 151.05
AM4400-PBT-ULL-NO316 Stainless Steel22 ga. PTFE Coated 24" LeadsPBT316 SSA$ 116.86
BM8020-ULL-NO316 Stainless Steel22 ga. PTFE Coated 24" LeadsPolypropylene316 SSA$ 127.71
CM4500-ULL-NOBrass22 ga. PTFE Coated 24" LeadsBuna NBrassA$ 156.60
DM9000-ULL-NOKynar22 ga. PTFE Coated 24" LeadsKynarKynarA$ 151.05
EM7000-ULL-NOPBT22 ga. PTFE Coated 24" LeadsBuna NPBTA$ 151.76
EM7000-PBT-ULL-NOPBT22 ga. PTFE Coated 24" LeadsPBTPBTA$ 112.07
FM8000-ULL-NOPolypropylene22 ga. MTW Coated 24" LeadsPolypropylenePolypropyleneA$ 114.66
MADISON -

Selectable Drum Liquid Level Switch

StyleModelBody MaterialFloat MaterialMax. PressureOperating Temp. RangeStem MaterialPrice (inc. GST)
AM4169-3316 Stainless Steel316 SS250 psi302 Degrees F Max.316 SSA$ 635.34
BM4168-3BrassBuna N150 psi221 Degrees F Max.BrassA$ 429.75
MADISON -

Open On Rise Drum Liquid Level Switch

StyleModelBody MaterialFloat MaterialMax. PressureOperating Temp. RangeStem MaterialPrice (inc. GST)
AM4169-2316 Stainless Steel316 SS250 psi302 Degrees F Max.316 SSA$ 455.60
BM4168-2BrassBuna N150 psi221 Degrees F Max.BrassA$ 364.87
MADISON -

Close On Rise Drum Liquid Level Switch

StyleModelBody MaterialFloat MaterialMax. PressureOperating Temp. RangeStem MaterialPrice (inc. GST)
AM4169-1316 Stainless Steel316 SS250 psi302 Degrees F Max.316 SSA$ 384.85
BM4168-1BrassBuna N150 psi221 Degrees F Max.BrassA$ 300.96
MADISON -

Close On Rise Liquid Level Switch

StyleModelMountingBody MaterialConduit SizeOperating Temp. RangeOverall LengthStem LengthStem MaterialVA RatingPrice (inc. GST)
AM3827-2NOHorizontal316 Stainless Steel1/2"392 Degrees F Max.5.25"5.12"316 SS30A$ 264.09
AM3827-3NOHorizontal316 Stainless Steel1/8"392 Degrees F Max.5.25"5.12"316 SS30A$ 254.34
BM3326-NOVerticalPolypropylene3/8-16"221 Degrees F Max.1.85"1.25"Polypropylene15A$ 55.02
CM8000-NOVerticalPolypropylene1/8"221 Degrees F Max.2.25"1.63"Polypropylene30A$ 36.48
DM3326-NPT-NOVerticalPolypropylene1/8"221 Degrees F Max.1.85"1.25"Polypropylene15A$ 81.07
MADISON -

Open On Rise Liquid Level Switch

StyleModelMountingBody MaterialConduit SizeOperating Temp. RangeOverall LengthStem LengthStem MaterialVA RatingPrice (inc. GST)
AM3827-2Horizontal316 Stainless Steel1/2"392 Degrees F Max.5.770"5.77"316 SS30A$ 261.73
AM3827-3Horizontal316 Stainless Steel1/8"392 Degrees F Max.5.770"5.77"316 SS30A$ 338.74
BM3782VerticalBrass/PBT-221 Degrees F Max.4.06"4.06"Brass30A$ 268.64
CM8000-CVerticalPolypropylene and PVC3/4"140 Degrees F Max.1.99"1.55"PVC30A$ 54.05
DM3326VerticalPolypropylene3/8-16"221 Degrees F Max.1.85"1.25"Polypropylene15A$ 50.93
EM3326-NPTVerticalPolypropylene1/8"221 Degrees F Max.1.85"1.25"Polypropylene15A$ 81.07
FM4035VerticalStainless Steel1/8"221 Degrees F Max.1.41"0.75"Stainless Steel15A$ 108.00
GM8800-PRVerticalPolypropylene1/4"221 Degrees F Max.3.380"3.38"Polypropylene100A$ 265.58
MADISON -

Selectable Liquid Level Switch

StyleModelMountingBody MaterialConduit SizeOperating Temp. RangeOverall LengthStem LengthStem MaterialVA RatingPrice (inc. GST)
AM3326-SMHorizontalPolypropylene3/8-16"221 Degrees F Max.1.85"1.24"Polypropylene15A$ 53.24
BM8790-14/4184HorizontalPolypropylene5/8-11"221 Degrees F Max.4.02"3.31"Polypropylene30A$ 60.43
CM4065Horizontal304 Stainless Steel1.5"257 Degrees F Max.5.5"5.5"304 SS20A$ 1415.06
DM3727HorizontalStainless Steel1/2" x 1/4"392 Degrees F Max.5"5"Stainless Steel30A$ 291.85
EMS8010HorizontalStainless Steel1/8"221 Degrees F Max.2.96"2.96"Stainless Steel30A$ 145.62
FM5600Vertical316 Stainless Steel1/4"392 Degrees F Max.3.380"2.63"316 SS60A$ 157.45
MADISON -

Single Point Level Switch, Miniature, 1 Inch Float Dia., 30 Watt, SPST, 120V AC, 0.28A

ModelItemPrice (inc. GST)
M4500CM7MYPA$ 86.24
See Details
MADISON -

Single Point Level Switch, 1.13 Inch Float Dia., 60 Watt, SPST, 240V AC, 0.40A

ModelItemPrice (inc. GST)
M9250CM7MZEA$ 316.80
See Details
MADISON -

Side Mount Level Switch, 1/4 Inch Spade Terminals, 1/2 Inch NPT Mount, 30 Watt, SPST, 100 PSI

ModelItemPrice (inc. GST)
M8725CM7MZBA$ 61.60
See Details
MADISON -

Single Point Level Switch, 1.5 Inch Float Dia., 60 Watt, SPST, 240V AC, 0.40A

ModelItemPrice (inc. GST)
M8600CM7MZAA$ 112.64
See Details
MADISON -

Single Point Level Switch, 0.75 Inch Float Dia., 30 Watt, SPST, 240V AC, 0.40A

ModelItemPrice (inc. GST)
M8000-75CM7MYZA$ 63.36
See Details
MADISON -

Single Point Level Switch, 1.25 Inch Float Dia., 60 Watt, SPST, 240V AC, 0.40A

ModelItemPrice (inc. GST)
M7800CM7MYYA$ 73.92
See Details
MADISON -

Single Point Level Switch, 3.5 Inch Float Dia., 100 Watt, SPST, 240V AC, 0.40A

ModelItemPrice (inc. GST)
M5602-13331CM7MYTA$ 779.68
See Details
MADISON -

Single Point Level Switch, 2.05 Inch Float Dia., 100 Watt, SPST, 240V AC, 0.40A

ModelItemPrice (inc. GST)
M5601-HPCM7MYRA$ 170.72
See Details
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Features

  • miniature floating switches feature a floating probe to detect high / low levels in a container.
  • These polypropylene switches are ideal for low-temperature food equipment, agriculture applications, or contact with many industrial fluids.
  • They can be installed in a vertical or horizontal position for the user's convenience and can withstand a maximum temperature of 392 degrees F.
  • They come with field-adjustable stem lengths that can be extended with pipe to meet custom tank / container depth.
  • Multi-level float switches control multiple switch points, pumps & valves, warning alarms and many more.
  • These versatile switches are available in polypropylene / Buna N / 316 SS float material to cater to varied applications.

Frequently Asked Questions

What is the purpose of the float level sensor?

These continuous level sensors feature a magnetic float that can rise and fall as liquid levels change. The float movement creates a magnetic field that actuates a hermetically sealed reed switch (located in the stem of the liquid sensor), thereby triggering the switch to open / close.

What are side mount level switches used for?

The side mount level switches can rotate 180 degrees and monitor liquid rise or fall in a tank. These encapsulated, magnetically coupled dry reed units can deliver more than 5 million switching cycles to control motor starters, solenoids, contractors and relays.

What is the advantage of polypropylene in Madison level switches?

Polypropylene is a type of synthetic resin that is moulded or extruded for making floating switches, providing toughness, flexibility and heat resistance.

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