™CompleteSense Controller

Temperature and Level control are built into the probe, and a separate Electronic Temperature controller, or level controller is NOT required. This is the easiest and most cost-effective method of control. 

Electronic Temperature Control – On at 40 Deg, Off at 45 Deg, Alarm at 35 Deg. 

ON/OFF level control with built in slosh control

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Standard product includes:

  •  ™CompleteSense sensor/probe w/ 30-foot cable

  • Temperature and level control built into the sensor

  • Time delay for slosh dampening

  • Low water cut-out protection for the heater element

  • Low-temperature alarm contact

  • Fused disconnect w/ external padlockable handle

  • Control transformer w/ circuit breaker protection

  • Field terminations included

  • Door-mounted ON/OFF selector switch

  • Door-mounted Heater Power On Pilot light

  • Available in Nema 12 / 3R / 4 / 4X stainless or non-metallic enclosures 
    Each panel is certified UL508A/cUL508A

Options available:    

  • Single, dual, and triplex contactor configurations

  • 30-100 Amp heater configurations

  • Basin heater failure circuitry

  • Alarm horn

  • Alarm beacon

  • Heater “run” N/O contact wired to terminals

  • Available with UL698A certification

  • Stand-alone temperature controller

Custom Control panels, including optional spray pump starters and/or fan motor starters, are available. Please contact us with your specific requirements.

M-Tech Control Chill Products
™CompleteSense Controller

CompleteSense Controller



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M-Tech Chill Products – ™CompleteSense Probe Temperature Switch Controller with built in water level protection


  • Temperature Level Switch/Controller with built-in liquid level protection
  • All electronics potted in the fitting
  • Dry contact for temperature outputs
  • Temperature Set-point and reset-point factory programmable
  • Programmable time delay for slosh damping
  • Level sensing is conductivity type detected at a tip of the probe
  • All stainless 316 construction with PTFE isolator
  • All wetted surfaces approved with potable water
  • Standard fitting 1” NPT male, others available (non-stock)
  • PTFE and PVC jacketed cables available
™CompleteSense Probe Temperature Switch Controller


™CompleteSense is an electronic controller with combined Temperature & Level control in a single probe. The primary application is low temperature and low liquid level cutoff protection in cooling tower basins. Temperature and level measurements are detected at the tip of the stainless-steel probe.

 ™CompleteSense monitors the temperature in the cold water basin of a cooling tower and provides on and off operation of the basin heater element. The set-point is typically programmed at 42OF with an operating band width of 5OF. The adjustable set-point range is from -40 to 176OF (-40 to 80OC). When the temperature drops to 40 OF, the ™CompleteSense energizes the power contactor(s) energizing the basin heater element. The ™CompleteSense de-energizes the power contactor at 45OF. An alarm contact closes when the temperature in the cold water basin is 35 OF or less.

The sensor has dual functions: temperature and low water cutout safety circuit. The low water cutout circuit will not allow the heater to energize unless the sensor is submerged in water. The sensor should be located at least one inch higher than the heater element assuring the heater element is covered with water before energizing. (see Basin Heater location PDF)

The Heater current charts may assist in selecting the proper contactor arrangement. If you are unsure of the correct sizing, we can assist in the selection.

Note on incoming power wiring:

Calculate the amperage as follows:The main incoming power wire requirements are sized based on the total heater nameplate kW and voltage. Calculate the actual load on the heater contactor control panel (the total kW of all the heaters connected to it) or use the nameplate rating in determining the wire size required.

Single Phase Amperage = Total kW x 1000



Three Phase Amperage = Total kW x 1000    

                                             Voltage x 1.732


The field supplied branch circuit disconnect switch and the branch circuit protective devices (fusing or circuit breaker) should be sized to carry at least 125% of the current calculated above.


When calculating a properly sized control panel, we assume there is going to be a maximum of (2) Heaters wired to a single contactor. Our prices are based on this assumption. There is (1) selector switch and (1) pilot light per contactor.

We can modify our standard control panels for you. Let us know your requirements.

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