Page Content: carbon sensors for heat treat, instruments for heat treatment, oxygen sensors for combustion control, instruments for combustion control.


Are you fed up with overpriced control panels that seem to always require costly startup fees, frustrated by antiquated technologies that never live up to their promises, or downright angry about paying high systems integrator markups on standard items like valves and wire?

Marathon makes the up-front investment to solve the real problem with the very best technology. When it comes to things like valves or wiring we'll do our best to get the very best price to the customer, even if that means having the customer buy from our suppliers directly. For more information on any of our standard panels, or for more information on customized control panels call (800) 547-1055.

For Sentinel Product Family Literature click here.


Sentinel-FCPTM Extractive Carbon Controller
The Next Generation in Carbon Control Systems

See a video of the Sentinel-FCP!

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Introducing the Sentinel-FCP from Marathon Monitors Inc. - Marathon's acclaimed Extractive Sentinel Technology applied to carbon control.

Finally a carbon control system that can handle non-conventional furnaces!

Most extractive solutions require you to control using Dewpoint, but the Sentinel-FCP is 100% carbon control for furnaces where in-situ probes just don't work.

Now you can control your shaker, rotary or 2200+ F processes with simple, cost-effective Sentinel Technology.

Temperature and Overtemp controllers available.



Sentinel-ESiTM Generator Controller
Remote Sensing with Integrated Controller

See a video of the Sentinel-ESi!

(Requires Windows Media Player)


Introducing the Sentinel-ESi from Marathon Monitors Inc.

All the advantages of the acclaimed Sentinel-ES with the added benefit of an integrated controller and ringback alarm circuit.

  • 10X faster response than conventional probes

  • Up to 100X faster than reheat wells

  • No modifications to your furnace or generator - just connect 1/4" plumbing

  • Lowest sensor replacement cost

  • Simplest set-up and calibration available

  • No hidden "maintenance kit," calibration or service costs

  • No costly extras like burn-off, reference air or timers needed


Sentinel-ESTM
Remote Atmosphere Measurement

For Sentinel-ES Product Literature click here.

The Sentinel-ESTM from Marathon Monitors is a breakthrough, cost-effective solution for monitoring oxygen concentration in applications running at temperatures or with environments too hostile or impractical to use in-situ probes. With a replacement (not rebuild) cost less than one-third that of conventional probes, the Sentinel-ESTM is an ideal solution for trouble-free and cost-effective control of endo generators.

  • 10X faster response than conventional probes

  • Up to 100X faster than reheat wells

  • No modifications to your furnace or generator - just plumbing

  • Lowest sensor replacement cost

  • Simplest set-up and calibration available

  • No hidden "maintenance kit," calibration or service costs

  • No costly extras like burn-off, reference air or timers needed

The Sentinel-ESTM Thrives Where In-situ Probes Cannot Survive


Sentinel QuickSwitchTM
Dual Generator Control Panel

Most heat treaters using endothermic generators keep a backup generator for emergencies and for periodic maintenance of their primary generator. Until now, those backup generators either had no control or required their own sensor and control system - a costly bit of equipment for a backup.

With the Sentinel QuickSwitch heat treaters no longer have to run their backup with no control or shell out thousands of dollars twice. The Sentinel QuickSwitch can quickly switch its control from one generator to another - no extra sensor or controller is needed: simply switch your gas flow using user-installed plumbing or manifold and throw the switch on the front of the QuickSwitch panel and your ready to go.

Best of all, the Sentinel QuickSwitch uses the acclaimed Sentinel-ES which has the lowest lifetime cost of any generator sensor on the market.