Conductivity level switches for water and wastewater applications


  • Reliable switching in difficult applications
  • Works in water, wastewater and other conductive liquids
  • 3-probe system controls up to two levels
  • Easy to install in standard NPT fitting
  • Includes three stainless steel electrodes

Conductivity Level Controllers Product Description

Global Water’s WL200 Conductivity Level Controllers provide reliable, cost effective, 2-point level control in applications where a mechanical switch would foul and an ultrasonic device could be inaccurate. The Conductivity Level Controller has no moving parts and may be used in water, wastewater and even slurries or other heavy bodied conductive liquids.

The WL200 Conductivity Level Controller’s durable polypropylene sensing head with its integral junction box includes a standard 1 inch NPT fitting that allows for quick installation just about anywhere. The Conductivity Level Controller’s three 24 inch long 316 stainless steel electrodes are easily cut to length for accurate on/off or high/low point level settings.

The WL200 Conductivity Level Controller includes a sensitivity adjustment for reliable operation in a variety of conductive liquids. The Conductivity Level Controllers may be DIN rail or surface mounted and operate on standard 115 VAC current, which is stepped down to 12 volts at the electrodes. Only an extremely small amount of current is necessary for the unit to perform. As with any device, a properly installed and grounded system poses no electrical hazard.

The WL200 Conductivity Level Controller comes complete with sensing head, three 24 inch electrodes, controller with adjustable sensitivity, 8-pin socket, and 10 ft cable. For deeper applications use the WL200-EXT Conductivity Level Controller extension kit which includes three 24 inch probes, couplers and spacers.

Conductivity Level Controllers Specifications

Conductivity Level Controller Sensor Head
     Body/J-Box: Reinforced polypropylene
     Probes: 316 Stainless Steel electrodes w/sheath
     Probe Length: 24 inch standard (may be coupled together for max. 72 inch)
     Mounting: 1 inch NPT
     Pressure: 30 PSIG, maximum
     Temperature: 100°C, maximum (212°F)
     Other: Integral NEMA6 (IP68) junction box with 10′ cable
Conductivity Level Controller
     Sensing Inputs: 3 maximum (High, Low, Common)
     Sensing Voltage: 12 VAC
     Sensing Resistance: Adjustable to 100,000 Ohms
     Input: 120 VAC 50/60 Hz
     Output: Contact rating 5 Amps resistive @ 240 VAC, form SPDT
     Mounting: 8-pin socket mount, surface or DIN rail-mountable
Weight: 1.2 lbs (0.5 kg)
Dimensions: 28-1/2 inch long x 2-1/8 inch diameter (72.4cm long x 5.4cm diameter)

Conductivity Level Controllers Options

WL200 Conductivity Level Controller (PN# AWC000)
3-Probe (24 inch long) & Conductivity Level Controller System.


WL200-EXT Conductivity Level Controller Extension Kit (PN# AWCEXT)
Includes two 24 inch Conductivity Level Controller Probes & Couplers. (Recomended maximum overall length of 72 inches.)

AD200-1 Voice Alarm Autodialers (PN# FA0100)
Voice alarm autodialers includes one inputs and four phone/pager numbers.


PC320 Water Level Controller

WL430 Sewage Lift Station Wastewater Level Sensor

WL450 High Accuracy Submersible Water Level Transmitters

WL400 Water Level Sensor
When ordering, specify water level range that will cover the maximum water level change for your application (this is not necessarily the total depth of water): 0-3, 0-15, 0-30, 0-60, 0-120, 0-250, 0-500 ft.  Selecting the smallest water level range possible will ensure the greatest accuracy.  Includes 25 feet of cable.