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Sensors for Chemicals

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Liquid level management of chemicals can present real challenges to manufacturers. Chemicals can be corrosive, caustic, dense, volatile and even sticky. Containers for these chemicals can be very large, such as mixing vats, or very small, such as reservoirs in reagent analysis equipment. The chemicals in these containers may be at rest or in constant motion. They may contain particles or cast off foam or vapor. Madison Company designs and manufactures a wide range of liquid level sensing products that are used in many specialty chemical applications, such as pharmaceuticals, industrial cleaners, chemical feed systems for water treatment, textiles, flavors and fragrances, construction adhesives and electronic chemicals .

Key features of Madison liquid level sensors and float switches for chemicals include:

  • Wide variety of chemically resistant materials available – 316 Stainless Steel, polypropylene and Kynar
  • Technology options such as pressure, ultrasonic and radar level sensors
  • Custom Engineered liquid level solutions for specialized applications.
  • Same day shipment for many liquid level sensors and float switches
  • Personalized service and support
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Model No. Image Description List Price Add to Cart
C4651-xxxxxC4651-xxxxx Continuous float level sensor, user selectable, customizable sensing range

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M9000M9000 Miniature float switch, Kynar, 1/8" NPT $37.70/ea $37.70
M9700M9700 Side-mount float switch, Kynar, 1/2" x 1/2" NPT $31.42/ea $31.42
M9705M9705 Side-mount float switch, Kynar, 1" x 1/2" NPT, slosh shield $66.63/ea $66.63
ML8888ML8888 Multi-point float switch kit, polypropylene, 2" NPT, 2 level $392.78/ea $392.78
ML8888-LVL3ML8888-LVL3 Multi-point float switch kit, polypropylene, 3rd level adder, for ML8888 $59.06/ea $59.06
ML8888-LVL4ML8888-LVL4 Multi-point float switch kit, polypropylene, 4th level adder, for ML8888 $60.21/ea $60.21
ML8888-LVLS3&4ML8888-LVLS3&4 3rd & 4th Level Adder Option for ML8888 Float Switch Kit $109.20/ea $109.20
MS9000MS9000 Miniature float switch, Kynar, 1/8" NPT, slosh shield $51.28/ea $51.28
OPT4210-P1OPT4210-P1 Optical Liquid Level Sensor, Plastic, M12x1 , Wet Sensing, 4.5-15.4 VDC $48.13/ea $48.13
OPT4381-P1OPT4381-P1 Optical Liquid Level Sensor, Stainless Steel and Plastic , 1/2" NPT, Wet Sensing, 10-45 VDC $224.77/ea $224.77
OPT4510-P1OPT4510-P1 Optical Liquid Level Sensor, Plastic, M10x1, Wet Sensing, 4.5 - 15.4 VDC $46.35/ea $46.35
OPT4710-24P1OPT4710-24P1 Optical Liquid Level Sensor, Plastic, 1/4" NPT, Wet Sensing, 8-30 VDC $96.76/ea $96.76
OPT4710-P1OPT4710-P1 Optical Liquid Level Sensor, Plastic, 1/4" NPT, Wet Sensing, 4.5-15.4 VDC $48.13/ea $48.13
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Model No. Image Description List Price Add to Cart
C4651-12802C4651-12802 Continuous float level sensor, stainless steel and polypropylene, 16" sensing range $275.41/ea $275.41
C4651-12803C4651-12803 Continuous float level sensor, stainless steel, 21.13" sensing range $382.01/ea $382.01
M3769 M3769 Interstitial float switch, PVC and Buna, 10 ft cable $126.98/ea $126.98
M3782M3782 Submersible suspendable float switch, brass and Buna, slosh shield, 240" cable $126.43/ea $126.43
M3827-2M3827-2 Side kick float switch, stainless steel, 1/2" NPT, normally closed $114.57/ea $114.57
M3827-2NOM3827-2NO Side kick float switch, stainless steel, 1/2" NPT, normally open $117.42/ea $117.42
M4003M4003 Side mount float switch, stainless steel, 5/8" bulkhead with rubber compression grommet $145.23/ea $145.23
M4035M4035 Miniature float switch, stainless steel and polypropylene, 1/8" NPT, normally closed $33.48/ea $33.48
M4035-BM4035-B Miniature float switch, stainless steel and polypropylene, 3/8" bulkhead, normally open $33.48/ea $33.48
M4169-1M4169-1 High level float switch, stainless steel, 3/4" bung, normally open, for 55 gallon drums $154.57/ea $154.57
M4169-2M4169-2 Low level float switch, stainless steel stem, 3/4" bung, normally closed, for 55 gallon drums $182.76/ea $182.76
M4169-3M4169-3 High and low level float switch, stainless steel, 3/4" bung, for 55 gallon drums, fixed mount alarm $229.40/ea $229.40
M4190-BUM4190-BU Side mount heavy duty float switch, stainless steel and Buna, 100 watt , .45 SG

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M4190-HPM4190-HP Side mount heavy duty float switch, stainless steel, 100 watt, .5 SG, for high pressure

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M4300M4300 Float switch, brass and Buna, 1/4" NPT, 60 watt $33.41/ea $33.41
M4300-SPDTM4300-SPDT Float switch, brass and Buna, 1/4" NPT, 25 watt SPDT $56.06/ea $56.06
M4301M4301 Float switch, brass and Buna, 1/4" NPT, 100 watt $39.76/ea $39.76
M4302-7807-1M4302-7807-1 Adjustable float switch, brass and Buna, 10.5" Max, 2" NPT $155.82/ea $155.82
M4302-7807-2M4302-7807-2 Adjustable float switch,brass and Buna, 22.5" max, 2" NPT $169.57/ea $169.57
M4302-7807-3M4302-7807-3 Adjustable float switch,brass and Buna, 34.5" max, 2" NPT $175.88/ea $175.88
M4302-7807-4M4302-7807-4 Adjustable float switch,brass and Buna, 46.5" max, 2" NPT $186.48/ea $186.48
M4302-7807-5M4302-7807-5 Adjustable float switch,brass and Buna, 58.5" max, 2" NPT $194.23/ea $194.23
M4302-7807-6M4302-7807-6 Adjustable float switch, brass and Buna, 70.5" max, 2" NPT $202.23/ea $202.23
M4302-xxxxxM4302-xxxxx Multi-point float switch,brass and Buna, custom configured

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M4402-xxxxxM4402-xxxxx Miniature multi-point float switch, stainless steel and Buna, custom configured

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M4500M4500 Miniature float switch, brass and Buna, 1/8" NPT $30.04/ea $30.04
M4502-xxxxxM4502-xxxxx Miniature multi-point float switch, brass and Buna, custom configurable

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M4602-xxxxxM4602-xxxxx Multi-point float switch, stainless steel and Buna, custom configured

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M5000M5000 Miniature float switch, stainless steel, 1/8" NPT $49.04/ea $49.04
M5002-xxxxxM5002-xxxxx Miniature multi-point float switch, stainless steel, custom configured

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M5010M5010 Miniature side mount 90 degree float switch, stainless steel, 3/8" bulkhead $52.78/ea $52.78
M5400M5400 Float switch, stainless steel and Buna, 1/4" NPT, 60 watt

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M5400-SPDTM5400-SPDT Float switch, stainless steel and Buna, 1/4" NPT, 25 watt SPDT

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M5401M5401 Float switch, stainless steel and Buna, 1/4" NPT, 100 watt

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M5600-PRM5600-PR Float switch, stainless steel, 1/4" NPT, 100 watt, for high pressure $98.02/ea $98.02
M5600-SPDTM5600-SPDT Float switch, stainless steel, 1/4" NPT, 25 watt SPDT $94.25/ea $94.25
M5601M5601 Float switch, stainless steel, 1/4" NPT, 100 watt $84.20/ea $84.20
M5602-7808-1M5602-7808-1 Adjustable float switch, stainless steel, 2" NPT, 10.5" max $227.26/ea $227.26
M5602-7808-2M5602-7808-2 Adjustable float switch, stainless steel, 2" NPT, 22.5" max $245.11/ea $245.11
M5602-7808-3M5602-7808-3 Adjustable float switch, stainless steel, 2" NPT, 34.5" max $256.03/ea $256.03
M5602-7808-4M5602-7808-4 Adjustable float switch, stainless steel, 2" NPT, 46.5" max $267.84/ea $267.84
M5602-7808-5M5602-7808-5 Adjustable float switch, stainless steel, 2" NPT, 58.5" max $279.55/ea $279.55
M5602-7808-6M5602-7808-6 Adjustable float switch, stainless steel, 2" NPT, 70.5" max $285.58/ea $285.58
M5602-xxxxxM5602-xxxxx Multi-point float switch, stainless steel, custom configured

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M5917M5917 Float switch, stainless steel, 1/4" NPT, for high temperature $77.24/ea $77.24
M7000M7000 Miniature float switch, PBT and Buna, 1/8" NPT $15.03/ea $15.03
M7700M7700 Side mount float switch, PBT, 1/2" x 1/2" NPT $22.25/ea $22.25
M7705M7705 Side mount float switch, PBT, 1" x 1/2" NPT, slosh shield $67.69/ea $67.69
M7725M7725 Side mount float switch, PBT, 1/2" NPT, 1/4" spade terminals $26.39/ea $26.39
M7750M7750 Side mount float switch, PBT, 1/2" NPT $23.56/ea $23.56
M7755M7755 Side mount float switch, PBT, 1" NPT, slosh shield $66.37/ea $66.37
M7790M7790 Side mount float switch, PBT, 5/8" bulkhead with silicone gasket $26.46/ea $26.46
M8700-CM8700-C Side-mount float switch, polypropylene, 3/4" x 1/2" NPT, for HVAC condensate $21.36/ea $21.36
M8800M8800 Float switch, polypropylene, 1/4" NPT, 60 watt $54.67/ea $54.67
M8800-PRM8800-PR Float switch, polypropylene, 1/4" NPT, 100 watt, 500 PSI $98.93/ea $98.93
M8800-SPDTM8800-SPDT Float switch, polypropylene, 1/4" NPT, 25 watt SPDT $76.40/ea $76.40
M8801M8801 Float switch, polypropylene, 1/4" NPT, 100 watt

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M8802-xxxxxM8802-xxxxx Float switch, polypropylene, custom configured

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ML4444ML4444 Multi-point float switch kit, brass and Buna, 2" NPT, 2 level $232.49/ea $232.49
ML4444-LVL3ML4444-LVL3 Multi-point float switch kit, brass and Buna, 3rd level adder, for ML4444 $74.43/ea $74.43
ML4444-LVL4ML4444-LVL4 Multi-point float switch kit, brass and Buna, 4th level adder, for ML4444 $80.89/ea $80.89
ML4444-LVLS3&4ML4444-LVLS3&4 3rd & 4th Level Adder Option for ML4444 Multi-Point Switch Kit $143.41/ea $143.41
ML5555ML5555 Multi-point float switch kit, stainless steel, 2" NPT, 2 level $471.26/ea $471.26
ML5555-LVL3ML5555-LVL3 Multi-point float switch kit, stainless steel, 3rd level adder, for ML5555 $163.68/ea $163.68
ML5555-LVL4ML5555-LVL4 Multi-point float switch kit, stainless steel, 4th level adder, for ML5555 $153.83/ea $153.83
ML5555-LVLS3&4ML5555-LVLS3&4 3rd & 4th Level Adder Option for ML5555 Float Switch Kit $322.32/ea $322.32
MS4010MS4010 Miniature side mount 90 degree float switch, brass and Buna, 3/8" bulkhead, slosh shield $77.62/ea $77.62
MS4500MS4500 Miniature float switch, brass and Buna, 1/8" NPT, slosh shield $64.43/ea $64.43
MS5010MS5010 Miniature side mount 90 degree float switch, stainless steel, 3/8" bulkhead, slosh shield $84.20/ea $84.20
MS5600MS5600 Float switch, stainless steel, 1/4" NPT, 60 watt, slosh shield $116.87/ea $116.87
MS7000MS7000 Miniature float switch, PBT and Buna, 1/8" NPT, slosh shield $32.05/ea $32.05
MS7725MS7725 Side mount float switch, PBT, slosh shield, 1/4" spade terminals $63.45/ea $63.45
MS7800MS7800 Float switch, PBT and Buna, 1/4" NPT, 60 watt, slosh shield $39.40/ea $39.40
MS8000MS8000 Miniature float switch, polypropylene, 1/8" NPT, slosh shield $26.39/ea $26.39
MS8725MS8725 Side-mount float switch, polypropylene, 1/2" NPT, slosh shield, 1/4" spade terminals $43.98/ea $43.98
MS8800MS8800 Float switch, polypropylene, 1/4" NPT, 60 watt, slosh shield $65.78/ea $65.78
MSB5600MSB5600 Float switch, stainless steel, bracket mount, 60 watt, slosh shield $163.69/ea $163.69
MSB8800MSB8800 Float switch, polypropylene,bracket mount, 60 watt, slosh shield $103.05/ea $103.05
PC-CW2PC-CW2 Hydrostatic pressure sensor, stainless steel, cage weight $180.81/ea $180.81
PC4203-005-P025PC4203-005-P025 Clog free hydrostatic pressure sensor, stainless steel and ceramic, 0-11.5 ft water column, 25 ft poly cable $565.07/ea $565.07
PC4203-010-P040PC4203-010-P040 Clog free hydrostatic pressure sensor, stainless steel and ceramic, 0-23 ft water column, 40 ft poly cable $592.81/ea $592.81
PC4203-015-P050PC4203-015-P050 Clog free hydrostatic pressure sensor, stainless steel and ceramic, 0-34 ft water column, 50 ft poly cable $611.31/ea $611.31
PH4201-005-P025PH4201-005-P025 Hydrostatic pressure sensor, titanium, 0-11.5 ft water column, 25 ft poly cable $519.87/ea $519.87
PH4201-010-P040PH4201-010-P040 Hydrostatic pressure sensor, titanium, 0-23 ft water column, 40 ft poly cable $549.66/ea $549.66
PH4201-015-P060PH4201-015-P060 Hydrostatic pressure sensor, titanium, 0-34 ft water column, 60 ft poly cable $581.51/ea $581.51
PH4201-2.5-P025PH4201-2.5-P025 Hydrostatic pressure sensor, titanium, 0 - 5.75 ft water column, 25 ft poly cable $513.69/ea $513.69
R3-100C232-ATER3-100C232-ATE Radar level sensor, 100 ft range, aluminum and Teflon, 2" NPT, DC powered, RS232 $2,293.01/ea $2,293.01
R3-100C485-ATER3-100C485-ATE Radar level sensor, 100 ft range, aluminum and Teflon, 2" NPT, DC powered, RS 485 $2,293.01/ea $2,293.01
R3-50C232-ATER3-50C232-ATE Radar level sensor, 50 ft range, aluminum and Teflon, 2" NPT, DC powered, RS232 $2,081.15/ea $2,081.15
R3-50C485-ATER3-50C485-ATE Radar level sensor, 50 ft range, aluminum and Teflon, 2" NPT, DC powered, RS 485 $2,081.15/ea $2,081.15
R4-100R2R6R4-100R2R6 Radar level sensor, Dual frequency 100 ft Range, aluminum, 2" NPT, AC powered

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R4-33R2R6R4-33R2R6 Radar level sensor, Dual frequency 33 ft Range, aluminum, 2" NPT, AC powered

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R4-50R2R6R4-50R2R6 Radar level sensor, Dual frequency 50 ft Range, aluminum, 2" NPT, AC powered

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TL4569-10358TL4569-10358 Visual level indicator, brass and Buna, 2" NPT, 17.5" total length $207.45/ea $207.45
TL4569-10359TL4569-10359 Visual level indicator, brass and Buna, 2" NPT, 22" total length $217.08/ea $217.08
TL4569-10360TL4569-10360 Visual level indicator, brass and Buna, 2" NPT, 26.5" total length $226.69/ea $226.69
TL4569-10361TL4569-10361 Visual level indicator, brass and Buna, 2" NPT, 33" total length $238.22/ea $238.22
TL4570-10362TL4570-10362 Visual level indicator, stainless steel, 2" NPT, 17.5" total length $259.83/ea $259.83
TL4570-10363TL4570-10363 Visual level indicator, stainless steel, 2" NPT, 22" total length $270.73/ea $270.73
TL4570-10364TL4570-10364 Visual level indicator, stainless steel, 2" NPT, 26.5" total length $281.66/ea $281.66
TL4570-10365TL4570-10365 Visual level indicator, stainless steel, 2" NPT, 33" total length $297.44/ea $297.44
TL4570-10366TL4570-10366 Visual level indicator, stainless steel and polypropylene, 2" NPT, 17.5" total length $234.79/ea $234.79
TL4570-10367TL4570-10367 Visual level indicator, stainless steel and polypropylene, 2" NPT, 22" total length

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TL4570-10368TL4570-10368 Visual level indicator, stainless steel and polypropylene, 2" NPT, 26.5" total length

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TL4570-10369TL4570-10369 Visual level indicator, stainless steel and polypropylene, 2" NPT, 33" total length $291.98/ea $291.98
U3M-148U3M-148 Ultrasonic Sensor, PVC, 1" NPT, 12-30 VDC, 4-20mA output, Push Button Programmable $448.28/ea $448.28
U3M-148-3/4U3M-148-3/4 Ultrasonic Sensor, PVC, 3/4" NPT, 12-30 VDC, 4-20mA output, Push Button Programmable $469.84/ea $469.84