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Sensors for Potable Water

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Whether it's a well for drinking water, a holding tank for livestock, or a reservoir for an ice machine, improper level sensing can mean no drinking water, no ice, and possibly a burned out pump. Wells especially hold particular challenges - they are deep, difficult to access and generally require food grade materials for the level sensor. Madison float switches and liquid level sensors are manufactured with proven reed switch technology. They offer trouble-free service with precise repeatability in potable water applications. Madison offers additional sensing technnologies, including radar and ultrasonic continuous level sensors, pressure sensors and tilt float switches.

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

  • FDA/NSF Compliant for contact with drinking water
  • Wide variety of Food Grade materials available – 316 Stainless Steel, Polypropylene, and Kynar
  • Custom Engineered liquid level solutions for specialized applications.
  • Same day shipment for many liquid level sensors and float switches
  • Personalized service and support
Potable Water Priority: 1
Model No. Image Description List Price Add to Cart
C4651-xxxxxC4651-xxxxx Continuous Float Level Sensor with 1/4" resolution

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M3784-110M3784-110 Conductivity Probe set with R2-120 Level Controller $393.77/ea $393.77
M3784-2M3784-2 Conductivity Sensor Probe Kit $194.93/ea $194.93
M3784-220M3784-220 Conductivity Sensor Kit with R2-220 Level Controller $385.17/ea $385.17
M3784-24M3784-24 Conductivity Sensor Kit with R2-24 Level Controller $385.17/ea $385.17
M3827-2M3827-2 Normally Closed Stainless Steel "Side Kick" Side-Mounted Float Switch $114.57/ea $114.57
M3827-2NOM3827-2NO Normally Open SS "Side Kick" Side-Mounted Liquid Level Switch $117.42/ea $117.42
M3850M3850 Single Point Conductivity Probe $26.39/ea $26.39
M4003M4003 Side-Mounted Switch $145.23/ea $145.23
M4169-1M4169-1 Stainless Steel High Level Drum Indicator $154.57/ea $154.57
M4169-2M4169-2 Drum Low Level Indicator $182.76/ea $182.76
M4169-3M4169-3 High - Low Drum Level Indicator $229.40/ea $229.40
M4190M4190 "Big Dipper" Heavy-Duty Industrial Side-Mounted Switch $287.37/ea $287.37
M4190-HPM4190-HP "Big Dipper" Heavy-Duty Industrial Side-Mounted Switch

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M5000M5000 Stainless Steel Miniature Float Switch $49.04/ea $49.04
M5002-xxxxxM5002-xxxxx Stainless Steel Series Multi-Point Float Level Switch

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M5010M5010 Miniature Stainless Steel Side-Mounted Float Switch $52.78/ea $52.78
M5600M5600 Full-Size Stainless Steel Float Switch $66.61/ea $66.61
M5600-PRM5600-PR High Pressure / 100 Watt Stainless Steel Float Switch $98.02/ea $98.02
M5600-SPDTM5600-SPDT Stainless Steel Full-Size Switch $94.25/ea $94.25
M5601M5601 Stainless Steel Full-Size Switch $84.20/ea $84.20
M5602-7808-1M5602-7808-1 Adjustable Switch Height Feature $227.26/ea $227.26
M5602-7808-2M5602-7808-2 Adjustable Switch Height Feature $245.11/ea $245.11
M5602-7808-3M5602-7808-3 Adjustable Switch Height Feature $256.03/ea $256.03
M5602-7808-4M5602-7808-4 Adjustable Switch Height Feature $267.84/ea $267.84
M5602-7808-5M5602-7808-5 Adjustable Switch Height Feature $279.55/ea $279.55
M5602-7808-6M5602-7808-6 Adjustable Switch Height Feature $285.58/ea $285.58
M5602-xxxxxM5602-xxxxx Stainless Steel Multi-Point Switch

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M5900M5900 1" x 1/2" NPT Stainless Steel Side-Mounted Float Switch $180.96/ea $180.96
M5910M5910 1/2" x 1/4" NPT Stainless Steel Side-Mounted Switch $153.26/ea $153.26
M5920M5920 1/2" x 1/2" NPT Stainless Steel Side Mounted Float Switch $165.88/ea $165.88
M5970M5970 1/2" Bulkhead Stainless Steel Side-Mounted Float Switch $91.74/ea $91.74
M8800M8800 Full-Size Polypropylene Float Switch $54.67/ea $54.67
M8800-PRM8800-PR Plastic Full-Size Switch $98.93/ea $98.93
M8800-SPDTM8800-SPDT Plastic Full Size Switch $76.40/ea $76.40
M8801M8801 Plastic Full-Size Switch

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M8802-xxxxxM8802-xxxxx Plastic Multi-Point Switch

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ML5555ML5555 Stainless Steel Multi-Point Float Switch Kit $471.26/ea $471.26
ML5555-LVL3ML5555-LVL3 3rd Level Adder Option for ML5555 Multi-Point Float Switch Kit $163.68/ea $163.68
ML5555-LVL4ML5555-LVL4 4th Level Adder Option for ML5555 Float Switch Kit $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
MSB5600MSB5600 Bracket-Mount Stainless Steel Full-Size Float Switch $163.69/ea $163.69
MSB8800MSB8800 Plastic Full-Size Bracket-Mount Float Switch $103.05/ea $103.05
PC-CW2PC-CW2 Cage Weight for PC Series Pressure Level Sensor $180.81/ea $180.81
PC4203-005-P025PC4203-005-P025 Clog-Free Pressure Level Sensor, 0-5 PSI (0 - 11.5 ft WC) $565.07/ea $565.07
PC4203-010-P040PC4203-010-P040 Clog-Free Pressure Level Sensor, 0-10 PSI ( 0 - 23 ft WC) $592.81/ea $592.81
PC4203-015-P050PC4203-015-P050 Clog-Free Pressure Level Sensor, 0-15 PSI (0 - 34 ft WC) $611.31/ea $611.31
PH4201-005-P025PH4201-005-P025 Hydrostatic Pressure Level Sensor, 0-5 PSI (0 - 11.5 ft. WC) $519.87/ea $519.87
PH4201-010-P040PH4201-010-P040 Hydrostatic Pressure Level Sensor, 0-10 PSI (0 - 23 ft WC) $549.66/ea $549.66
PH4201-015-P060PH4201-015-P060 Hydrostatic Pressure Level Sensor, 0-15 PSI (0 - 34.5 ft WC) $581.51/ea $581.51
PH4201-2.5-P025PH4201-2.5-P025 Hydrostatic Pressure Level Sensor, 0-2.5 PSI (0 - 5.75 ft WC) $513.69/ea $513.69
R3-100C232-ATER3-100C232-ATE Radar Level Sensor $2,293.01/ea $2,293.01
R3-100C485-ATER3-100C485-ATE Radar Level Sensor $2,293.01/ea $2,293.01
R3-50C232-ATER3-50C232-ATE Radar Level Sensor $2,081.15/ea $2,081.15
R3-50C485-ATER3-50C485-ATE Radar Level Sensor $2,081.15/ea $2,081.15
R4-100R2R6R4-100R2R6 Dual Frequency Radar Level Sensor

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R4-33R2R6R4-33R2R6 Dual Frequency Radar Level Sensor

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R4-50R2R6R4-50R2R6 Dual Frequency Radar Level Sensor

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TL4570-10362TL4570-10362 17.5" Visual Level Indicator - Stainless Steel Stem / Stainless Steel Float $259.83/ea $259.83
TL4570-10363TL4570-10363 22" Visual Level Indicator - Stainless Steel Stem / Stainless Steel Float $270.73/ea $270.73
TL4570-10364TL4570-10364 26.5" Visual Level Indicator - Stainless Steel Stem / Stainless Steel Float $281.66/ea $281.66
TL4570-10365TL4570-10365 33" Visual Level Indicator - Stainless Steel Stem / Stainless Steel Float $297.44/ea $297.44
TL4570-10366TL4570-10366 17.5" Visual Level Indicator - Stainless Steel Stem / Polypropylene Float $234.79/ea $234.79
TL4570-10367TL4570-10367 22" Visual Level Indicator - Stainless Steel Stem / Polypropylene Float

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TL4570-10368TL4570-10368 26.5" Visual Level Indicator - Stainless Steel Stem / Polypropylene Float

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TL4570-10369TL4570-10369 33" Visual Level Indicator - Stainless Steel Stem / Polypropylene Float $291.98/ea $291.98
U3M-148U3M-148 U Series Mini Ultrasonic Sensor $448.28/ea $448.28
U3M-148-3/4U3M-148-3/4 Drum Level Indicator $469.84/ea $469.84
Potable Water Priority: 2
Model No. Image Description List Price Add to Cart
C4651-12803C4651-12803 24" Continuous Level Sensor with 1/4" Resolution $382.01/ea $382.01
M3326M3326 Normally Closed Subminiature Switch $24.95/ea $24.95
M3326-NOM3326-NO Subminiature Polypropylene Float Switch $24.95/ea $24.95
M3326-NPTM3326-NPT Normally Closed Subminiature Float Switch $42.73/ea $42.73
M3326-NPT-NOM3326-NPT-NO Normally Opened Subminiature Float Switch $44.74/ea $44.74
M4035M4035 Subminiature Switch $33.48/ea $33.48
M4035-BM4035-B Subminiature Switch $33.48/ea $33.48
M4189M4189 Tilt Float Switch (6.5ft. Cable) $33.30/ea $33.30
M4189-1003M4189-1003 Tilt Float Switch (49' Cable) $52.66/ea $52.66
M4546M4546 Tilt Float Switch (6.5' Cable) $29.29/ea $29.29
M4548M4548 Industrial Tilt Float Switch (6.5' Cable) $59.23/ea $59.23
M4549M4549 Industrial Tilt Float Switch (49' Cable) $91.24/ea $91.24
M5917M5917 High Temperature Float Switch - Full-Size Stainless Steel $77.24/ea $77.24
M7800M7800 PBT / Buna 1/4" NPT Full-Size Float Switch $32.67/ea $32.67
M7800-SPDTM7800-SPDT Plastic Full-Size Switch $47.70/ea $47.70
M7801M7801 Plastic Full-Size Switch

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M8000M8000 Miniature Polypropylene Float Switch $13.23/ea $13.23
M8000-CM8000-C HVAC Series Condensate Float Level Switch $21.89/ea $21.89
M8000BM8000B Miniature Switch $32.95/ea $32.95
M8002-xxxxxM8002-xxxxx Stainless Steel / Polypropylene Miniature Multi-Point Switch

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M8020M8020 Stainless Steel Miniature Switch $68.53/ea $68.53
M8060-PRM8060-PR Plastic Full-Size Switch $58.21/ea $58.21
M8080-xxxxxM8080-xxxxx Plastic Multi-Point Switch

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M8085M8085 Plastic Multi-Point Switch $63.20/ea $63.20
M8600M8600 Stainless Steel / Polypropylene Float Switch $50.27/ea $50.27
M8602-xxxxxM8602-xxxxx Stainless Steel Multi-Point Switch

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M8700M8700 Polypropylene Side-Mounted Float Switch $15.03/ea $15.03
M8700-CM8700-C HVAC Series Condensate Float Switch $21.36/ea $21.36
M8705M8705 Plastic Side-Mounted Switch $33.93/ea $33.93
M8710M8710 1/2 x 1/4" NPT PP Side-Mounted Float Switch $57.81/ea $57.81
M8725M8725 Plastic Side-Mounted Switch $20.11/ea $20.11
M8750M8750 1/2" NPT Polypropylene Side-Mounted Float Switch $12.93/ea $12.93
M8755M8755 Plastic Side-Mounted Switch $35.51/ea $35.51
M8790M8790 Bulkhead Side-Mounted Float Switch $17.60/ea $17.60
M8790-14/4184M8790-14/4184 Plastic Side-Mounted Float Switch $32.13/ea $32.13
M9000M9000 Miniature Kynar 1/8" NPT Vertical Float Switch $37.70/ea $37.70
M9700M9700 Kynar 1/2" NPT Side-Mounted Switch $31.42/ea $31.42
M9705M9705 Plastic Side-Mounted Switch $66.63/ea $66.63
ML8888ML8888 Polypropylene Multi Level Float Switch Kit $392.78/ea $392.78
ML8888-LVL3ML8888-LVL3 3rd Level Adder Option for ML8888 Float Switch Kit $59.06/ea $59.06
ML8888-LVL4ML8888-LVL4 4th Level Adder Option for ML8888 Float Switch Kit $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
MS5010MS5010 Miniature Stainless Steel Side-Mounted Float Switch with Slosh Shield $84.20/ea $84.20
MS5600MS5600 Stainless Steel Full-Size Switch $116.87/ea $116.87
MS7800MS7800 Plastic Full-Size Switch $39.40/ea $39.40
MS8000MS8000 Plastic Miniature Float Switch with Slosh Shield $26.39/ea $26.39
MS8725MS8725 Plastic Side-Mounted Switch $43.98/ea $43.98
MS8800MS8800 Plastic Full-Size Switch $65.78/ea $65.78
MS9000MS9000 Kynar Plastic Miniature Float Switch with Slosh Shield $51.28/ea $51.28
MT3920-2MT3920-2 Subminiature Switch with Type K Thermocouple

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OPT4210-P1OPT4210-P1 Miniature Optical Liquid Level Sensor, Wet Sensing for 4.5-15.4 VDC $48.13/ea $48.13
OPT4381-P1OPT4381-P1 Miniature Optical Liquid Level Sensor, Wet Sensing for 10-45 VDC $224.77/ea $224.77
OPT4510-P1OPT4510-P1 Miniature Optical Liquid Level Sensor, Wet Sensing for 4.5-15.4 VDC $46.35/ea $46.35
OPT4710-24P1OPT4710-24P1 Miniature Optical Liquid Level Sensor, Wet Sensing for 8-30 VDC $96.76/ea $96.76
OPT4710-P1OPT4710-P1 Miniature Optical Liquid Level Sensor, Wet Sensing for 4.5-15.4 VDC $48.13/ea $48.13