Conductive Level Switches
Conductive level switches detect the level of conductive liquids by measuring the electrical resistance between a sensing electrode and a ground reference. With no moving parts, the design handles difficult media like low-density liquids, high-viscosity liquids, and liquids carrying large amounts of particulates. Common applications include water treatment, chemical processing, and pharmaceuticals, where liquid level affects process efficiency and safety.
The switches install easily and integrate into existing systems, providing real-time level data for control. Conductive level switch products are listed below.
NE
Conductive Level Switch
Made in the USA | up to 6 Contacts | up to 440 PSIG | up to 300 °F | 1/2" or 1-1/2" NPT | SS, Hastelloy, or Titanium with Polyolefin or PTFE Cladding | Usable with Dirty and Corrosive Media
Starting at $335
Fast Delivery
Contacts
Up To 6 Contacts via External Relays
Fittings
½" NPT, 1½" NPT Male
Material
SS, Hastelloy®, Titanium w/ Polyolefin or PTFE Cladding
Max. Temperature
Up To 300 °F (150 °C) w/PTFE Cladding
For Conductive Liquids Only (>20 uS/cm)
Usable with Dirty / Corrosive Media
BABA (Build America, Buy America) compliant models available
NE-5048
Electrode Relay for Conductive Level Switches
1 SPDT Contact | 24-240 VAC/DC | 400 ms Response Time | Adjustable Sensitivity and Delay Time | N/O or N/C Selectable
Power Supply
24-240 VAC/DC
Power Consumption
Max. 2 VA / 1.5 W
Output
1 Potential-Free SPDT Contact
Ambient Temperature
-4...131 °F (55 °C)
Mounting
Quick Mount for DIN Rail 60715
NEH
Cable-Suspended Conductive Level Switch
Made in the USA | up to 6 Contacts | up to 90 PSIG | up to 300 °F | Usable with Dirty and Corrosive Media | SS, Hastelloy, Titanium, PTFE
Contacts
Up To 6 Contacts via External Relays
Fittings
½" NPT, 1½" NPT Male
Material
SS, Hastelloy®, Titanium, PTFE
Max. Temperature
Up To 300°F (150 °C) w/PTFE Cable
For Conductive Media Only (>20 uS/cm)
Multiple Switchpoints via Suspended Electrodes
Usable with Dirty / Corrosive Media
BABA (Build America, Buy America) compliant models available
NEK
Compact Conductive Level Switch
Made in the USA | up to 290 PSIG | up to 185 °F | 3/4" NPT | PP or PPS | PNP, NPN, or SPDT
Compatible Media
For Conductive Liquids Only
Body Material
Polypropylene or PPS
Sensing Electrode Material
316-Ti SS
Max. Pressure
Polypropylene = 87 PSIG, PPS = 290 PSIG
Max. Temperature
Polypropylene = 140 °F (60 °C), PPS = 185 °F (85 °C)
Switching Output
PNP or NPN Open Collector or SPDT Relay
Excellent for Dirty, Low-Viscosity or Aggressive Conductive Liquids
Transistor Switch or Relay Output