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Sensors for Non-Potable Water

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Waste water and sewage treatment processes produce unending equipment and operator issues. Clogged pumps are caused by debris from cleaning, solids from processing and particles from agitation. Increased difficulty in level sensing occurs as waste water becomes foamy, turbid and more chemical-laden. From holding tanks to pits, ponds, streams, and reservoirs, Madison Company manufactures standard and custom-designed switches and sensors for virtually any waste water sensing application. Each Madison product is designed and manufactured to withstand even the harshest of environments.

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

  • Wide variety of chemically resistant materials available – 316 Stainless Steel, Buna-N, brass and PBT
  • Slosh shields on many products to prevent floats from sticking
  • Technology options such as pressure, tilt, 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
Model No.sort descending Image Description List Price Add to Cart
021-P00023021-P00023 Junction Box, Cast Iron, 3'' Round, Explosion Proof $167.44/ea $167.44
021-P00041021-P00041 Junction Box, Aluminum, 3'' Round $29.83/ea $29.83
021-P00042021-P00042 Junction Box, Nylon, 3'' Round $24.07/ea $24.07
021-P00055021-P00055 Junction Box, Aluminum, 3'' Round, Explosion Proof $72.09/ea $72.09
C4651-12802C4651-12802 18.63" Continuous Level Sensor with 1/4" Resolution $263.55/ea $263.55
C4651-12803C4651-12803 24" Continuous Level Sensor with 1/4" Resolution $365.56/ea $365.56
C4651-12804C4651-12804 32" Continuous Level Sensor with 1/4" Resolution for 55-Gallon Drums $429.20/ea $429.20
C4651-xxxxxC4651-xxxxx Continuous Float Level Sensor with 1/4" resolution

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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 $40.89/ea $40.89
M3326-NPT-NOM3326-NPT-NO Normally Opened Subminiature Float Switch $42.81/ea $42.81
M3769M3769 Interstitial Switch $121.51/ea $121.51
M3782M3782 Miniature Submersible Suspendable Switch with Slosh Shield $120.98/ea $120.98
M3784-110M3784-110 Conductivity Probe set with Level Controller for 120 VAC $376.81/ea $376.81
M3784-2M3784-2 Conductivity Sensor Probe Kit $194.93/ea $194.93
M3784-220M3784-220 Conductivity Sensor Kit with Level Controller for 220 VAC $385.17/ea $385.17
M3784-24M3784-24 Conductivity Sensor Kit with Level Controller for 24 VAC $385.17/ea $385.17
M3827-2M3827-2 Normally Closed Stainless Steel "Side Kick" Side-Mounted Float Switch $109.64/ea $109.64
M3827-2NOM3827-2NO Normally Open SS "Side Kick" Side-Mounted Liquid Level Switch $112.37/ea $112.37
M3850M3850 Single Point Conductivity Probe $23.68/ea $23.68
M4003M4003 Side-Mounted Switch $145.23/ea $145.23
M4010M4010 Miniature Brass / Buna-N Side-Mounted Switch $46.30/ea $46.30
M4035M4035 Subminiature Switch $32.04/ea $32.04
M4035-BM4035-B Subminiature Switch $32.38/ea $32.38
M4168-1M4168-1 Brass High Level 55-Gallon Drum Indicator $110.27/ea $110.27
M4168-1-FMM4168-1-FM Brass Drum Level Indicator with Fix Mount Alarm $335.53/ea $335.53
M4168-2M4168-2 Low Level Brass Drum Level Indicator $127.67/ea $127.67
M4168-3M4168-3 High/Low Drum Level Indicator $156.72/ea $156.72
M4169-1M4169-1 Stainless Steel High Level Drum Indicator $147.92/ea $147.92
M4169-2M4169-2 Drum Low Level Indicator $174.89/ea $174.89
M4169-3M4169-3 High - Low Drum Level Indicator $219.52/ea $219.52
M4189M4189 Tilt Float Switch (6.5ft. Cable) $31.87/ea $31.87
M4189-1003M4189-1003 Tilt Float Switch (49' Cable) $50.39/ea $50.39
M4190M4190 "Big Dipper" Heavy-Duty Industrial Side-Mounted Switch $274.99/ea $274.99
M4190-BUM4190-BU "Big Dipper" Heavy-Duty Industrial Side-Mounted Switch

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M4190-HPM4190-HP "Big Dipper" Heavy-Duty Industrial Side-Mounted Switch

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M4300M4300 Brass Full-Size Float Level Switch $31.97/ea $31.97
M4300-SPDTM4300-SPDT Brass Full-Size Switch $53.39/ea $53.39
M4301M4301 Brass Full-Size Switch $37.87/ea $37.87
M4302-7807-1M4302-7807-1 Adjustable Switch Height Feature $149.11/ea $149.11
M4302-7807-2M4302-7807-2 Adjustable Switch Height Feature $162.27/ea $162.27
M4302-7807-3M4302-7807-3 Adjustable Switch Height Feature $168.31/ea $168.31
M4302-7807-4M4302-7807-4 Adjustable Switch Height Feature $178.45/ea $178.45
M4302-7807-5M4302-7807-5 Adjustable Switch Height Feature $185.87/ea $185.87
M4302-7807-6M4302-7807-6 Adjustable Switch Height Feature $193.52/ea $193.52
M4302-xxxxxM4302-xxxxx Brass Multi-Point Switch

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M4402-xxxxxM4402-xxxxx Stainless Steel Multi-Point Switch

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M4500M4500 Brass Miniature Float Level Switch $28.74/ea $28.74
M4502-xxxxxM4502-xxxxx Brass Multi-Point Float Level Switch

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M4546M4546 Tilt Float Switch (6.5' Cable) $28.03/ea $28.03
M4548M4548 Industrial Tilt Float Switch (6.5' Cable) $56.68/ea $56.68
M4549M4549 Industrial Tilt Float Switch (49' Cable) $87.31/ea $87.31
M4602-xxxxxM4602-xxxxx Multi-Point Float Level Switch

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M5000M5000 Stainless Steel Miniature Float Switch $46.93/ea $46.93
M5002-xxxxxM5002-xxxxx Stainless Steel Series Multi-Point Float Level Switch

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M5010M5010 Miniature Stainless Steel Side-Mounted Float Switch $50.51/ea $50.51
M5400M5400 Brass Full-Size Switch

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M5400-SPDTM5400-SPDT Brass Full Size Switch

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M5401M5401 Brass Full-Size Switch

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M5600M5600 Full-Size Stainless Steel Float Switch $63.74/ea $63.74
M5600-PRM5600-PR High Pressure / 100 Watt Stainless Steel Float Switch $93.80/ea $93.80
M5600-SPDTM5600-SPDT Stainless Steel Full-Size Switch $90.19/ea $90.19
M5601M5601 Stainless Steel Full-Size Switch $80.57/ea $80.57
M5602-7808-1M5602-7808-1 Adjustable Switch Height Feature $217.48/ea $217.48
M5602-7808-2M5602-7808-2 Adjustable Switch Height Feature $234.56/ea $234.56
M5602-7808-3M5602-7808-3 Adjustable Switch Height Feature $245.00/ea $245.00
M5602-7808-4M5602-7808-4 Adjustable Switch Height Feature $256.31/ea $256.31
M5602-7808-5M5602-7808-5 Adjustable Switch Height Feature $267.51/ea $267.51
M5602-7808-6M5602-7808-6 Adjustable Switch Height Feature $273.28/ea $273.28
M5602-xxxxxM5602-xxxxx Stainless Steel Multi-Point Switch

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M5900M5900 1" x 1/2" NPT Stainless Steel Side-Mounted Float Switch $173.17/ea $173.17
M5910M5910 1/2" x 1/4" NPT Stainless Steel Side-Mounted Switch $146.66/ea $146.66
M5917M5917 High Temperature Float Switch - Full-Size Stainless Steel $73.91/ea $73.91
M5920M5920 1/2" x 1/2" NPT Stainless Steel Side Mounted Float Switch $158.74/ea $158.74
M5970M5970 1/2" Bulkhead Stainless Steel Side-Mounted Float Switch $87.79/ea $87.79
M7000M7000 PBT 1/8" NPT Miniature Float Switch $15.03/ea $15.03
M7700M7700 1/2" x 1/2" NPT Side-Mounted PBT Float Switch $22.25/ea $22.25
M7705M7705 Plastic Side-Mounted Switch $64.77/ea $64.77
M7725M7725 PBT Plastic Side-Mounted Float Switch $25.25/ea $25.25
M7740M7740 PBT Plastic Side-Mounted Float Switch $36.96/ea $36.96
M7750M7750 PBT 1/2" NPT Side-Mounted Float Switch $22.55/ea $22.55
M7755M7755 Plastic Side-Mounted Switch $63.52/ea $63.52
M7790M7790 5/8" Bulkhead PBT Side-Mounted Switch $26.46/ea $26.46
M7800M7800 PBT / Buna 1/4" NPT Full-Size Float Switch $31.27/ea $31.27
M7800-SPDTM7800-SPDT Plastic Full-Size Switch $45.65/ea $45.65
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 $20.94/ea $20.94
M8000BM8000B Miniature Switch $31.53/ea $31.53
M8002-xxxxxM8002-xxxxx Stainless Steel / Polypropylene Miniature Multi-Point Switch

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M8020M8020 Stainless Steel Miniature Switch $65.58/ea $65.58
M8060-PRM8060-PR Plastic Full-Size Switch $55.70/ea $55.70
M8080-xxxxxM8080-xxxxx Plastic Multi-Point Switch

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M8085M8085 Plastic Multi-Point Switch $60.48/ea $60.48
M8600M8600 Stainless Steel / Polypropylene Float Switch $48.10/ea $48.10
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 $20.44/ea $20.44
M8705M8705 Plastic Side-Mounted Switch $32.47/ea $32.47
M8710M8710 1/2 x 1/4" NPT PP Side-Mounted Float Switch $55.32/ea $55.32
M8725M8725 Plastic Side-Mounted Switch $19.24/ea $19.24
M8750M8750 1/2" NPT Polypropylene Side-Mounted Float Switch $12.93/ea $12.93
M8755M8755 Plastic Side-Mounted Switch $33.98/ea $33.98
M8790M8790 Bulkhead Side-Mounted Float Switch $17.60/ea $17.60
M8790-14/4184M8790-14/4184 Plastic Side-Mounted Float Switch $30.75/ea $30.75
M8800M8800 Full-Size Polypropylene Float Switch $52.31/ea $52.31
M8800-PRM8800-PR Plastic Full-Size Switch $94.67/ea $94.67
M8800-SPDTM8800-SPDT Plastic Full Size Switch $73.11/ea $73.11
M8801M8801 Plastic Full-Size Switch

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M8802-xxxxxM8802-xxxxx Plastic Multi-Point Switch

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M9000M9000 Miniature Kynar 1/8" NPT Vertical Float Switch $36.08/ea $36.08
M9700M9700 Kynar 1/2" NPT Side-Mounted Switch $30.06/ea $30.06
M9705M9705 Plastic Side-Mounted Switch $63.76/ea $63.76
MD4814-012-00-4MD4814-012-00-4 Digital Panel Meter for 12VDC with 4-20mA Output $365.77/ea $365.77
MD4814-110-00MD4814-110-00 Digital Panel Meter for Process or Temperature with 24VDC Supply $281.90/ea $281.90
MD4814-110-02MD4814-110-02 Digital Panel Meter with 24VDC Supply & Relay Outputs $344.75/ea $344.75
MD4814-110-X2MD4814-110-X2 Digital Panel Meter with Extra-Large Display, 24VDC Supply & Relay Outputs $451.60/ea $451.60
MD4815-024-02MD4815-024-02 Dual-Line 6-digit 24/12 VDC Process Meter with Control Relays $445.41/ea $445.41
MD4815-110-02MD4815-110-02 Dual-Line 6-digit Process Meter with 24VDC Supply & Control Relays $376.28/ea $376.28
MD4815-110-02-04MD4815-110-02-04 Dual-Line 6-digit Process Meter 24VDC Supply, Control Relays, 4-20mA Output $497.58/ea $497.58
ML4444ML4444 Brass Multi-Point Switch Kit $222.48/ea $222.48
ML4444-LVL3ML4444-LVL3 3rd Level Adder Option for ML4444 Multi-Point Switch Kit $71.23/ea $71.23
ML4444-LVL4ML4444-LVL4 4th Level Adder Option for ML4444 Multi-Point Switch Kit $77.41/ea $77.41
ML4444-LVLS3&4ML4444-LVLS3&4 3rd & 4th Level Adder Option for ML4444 Multi-Point Switch Kit $137.23/ea $137.23
ML5555ML5555 Stainless Steel Multi-Point Float Switch Kit $450.97/ea $450.97
ML5555-LVL3ML5555-LVL3 3rd Level Adder Option for ML5555 Multi-Point Float Switch Kit $156.63/ea $156.63
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 $308.44/ea $308.44
ML8888ML8888 Polypropylene Multi Level Float Switch Kit $375.87/ea $375.87
ML8888-LVL3ML8888-LVL3 3rd Level Adder Option for ML8888 Float Switch Kit $56.52/ea $56.52
ML8888-LVL4ML8888-LVL4 4th Level Adder Option for ML8888 Float Switch Kit $57.62/ea $57.62
ML8888-LVLS3&4ML8888-LVLS3&4 3rd & 4th Level Adder Option for ML8888 Float Switch Kit $104.49/ea $104.49
MS4010MS4010 Brass Side-Mounted Switch $74.28/ea $74.28
MS4500MS4500 Brass Miniature Switch $61.66/ea $61.66
MS5010MS5010 Miniature Stainless Steel Side-Mounted Float Switch with Slosh Shield $80.57/ea $80.57
MS5600MS5600 Stainless Steel Full-Size Switch $111.84/ea $111.84
MS7000MS7000 Plastic Miniature Float Switch with Slosh Shield $30.67/ea $30.67
MS7725MS7725 Plastic Side-Mounted Switch $60.72/ea $60.72
MS7800MS7800 Plastic Full-Size Switch $37.70/ea $37.70
MS8000MS8000 Plastic Miniature Float Switch with Slosh Shield $25.25/ea $25.25
MS8725MS8725 Plastic Side-Mounted Switch $42.09/ea $42.09
MS8800MS8800 Plastic Full-Size Switch $62.95/ea $62.95
MS9000MS9000 Kynar Plastic Miniature Float Switch with Slosh Shield $49.07/ea $49.07
MSB5600MSB5600 Bracket-Mount Stainless Steel Full-Size Float Switch $156.64/ea $156.64
MSB8800MSB8800 Plastic Full-Size Bracket-Mount Float Switch $98.61/ea $98.61
MT3920-2MT3920-2 Subminiature Switch with Type K Thermocouple

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OPT4210-P1OPT4210-P1 Miniature Optical Liquid Level Sensor, Wet Sensing for 5-12 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 5-12 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 5-12 VDC $48.13/ea $48.13
PC-CW2PC-CW2 Cage Weight for PC Series Pressure Level Sensor $172.20/ea $172.20
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
PH-EMSPH-EMS Pressure Sensor - Environmentally Moisture-Sealed Bladder

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PH-FILPH-FIL Pressure Sensor Desiccant Filter

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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
R1-12R1-12 Relay, DPDT with 12VDC Coil $40.80/ea $40.80
R1-120R1-120 Relay, DPDT with 120VAC coil $40.03/ea $40.03
R1-220R1-220 Relay, DPDT with 220VAC Coil $73.27/ea $73.27
R2-120R2-120 Pump Level Controller, 120VAC input $206.59/ea $206.59
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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TL4569-10358TL4569-10358 17.5" Visual Level Indicator - Brass Stem / Buna-N Float $198.52/ea $198.52
TL4569-10359TL4569-10359 22" Visual Level Indicator - Brass Stem / Buna-N Float $207.73/ea $207.73
TL4569-10360TL4569-10360 26.5" Visual Level Indicator - Brass Stem / Buna-N Float $216.93/ea $216.93
TL4569-10361TL4569-10361 33" Visual Level Indicator - Brass Stem / Buna-N Float $227.96/ea $227.96
TL4570-10362TL4570-10362 17.5" Visual Level Indicator - Stainless Steel Stem / Stainless Steel Float $248.64/ea $248.64
TL4570-10363TL4570-10363 22" Visual Level Indicator - Stainless Steel Stem / Stainless Steel Float $259.07/ea $259.07
TL4570-10364TL4570-10364 26.5" Visual Level Indicator - Stainless Steel Stem / Stainless Steel Float $269.53/ea $269.53
TL4570-10365TL4570-10365 33" Visual Level Indicator - Stainless Steel Stem / Stainless Steel Float $284.63/ea $284.63
TL4570-10366TL4570-10366 17.5" Visual Level Indicator - Stainless Steel Stem / Polypropylene Float $224.68/ea $224.68
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 $279.41/ea $279.41
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