™CompleteSense Controller w/ separate Temperature Controller

Temperature sensing and Level control circuitry are incorporated into the probe, and a separate 1/16th Din Electronic Temperature Controller is added for water temperature control and monitoring. This method controls the basin heater with a 3-wire PT100 RTD This version is a more expensive model than the standard, but can monitor exact basin water temperatures, and allows for adjustments of temperature settings.

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Standard product includes:

  • CompleteSense sensor/probe w/ 30-foot cable

  • Low water cut-out protection for the heater element is built into the sensor. RTD wires included to connect to the Temperature Controller

  • Time delay for slosh dampening

  • 1/16th Din Temperature Controller

  • 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

  • Each panel is certified UL508A/cUL508A

  • Available in Nema 12 / 3R / 4 / 4X stainless or non-metallic enclosures

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  

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 w/ separate Temperature Controller

CompleteSense Controller W Separate Temperature 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 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 Temperature Controller set points are preprogrammed. 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)

M-Tech Chill Products – ™CompleteSense Probe

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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