Propane and CO Detectors from Bascom-Turner Gas-Sentry CPC-201 & CPC-301

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Gas-Sentry Models CPC-201 & CPC-301

Three-In-One, Affordable, and Smart

These multifunctional detectors, developed with support from the Gas Research Institute (GRI), combine previously separate instruments into one small, lightweight package at a fraction of the total cost. Two types of propane gas sensors, an electrochemical carbon monoxide (CO) sensor, a built-in pump and microprocessor control provides accurate and fast propane and CO readings. The Gas-Sentry is used for leak location, bar holing, outdoor / indoor differential CO readings, and flue gas tests. Now you can carry one detector and do the whole job both indoors and outdoors.

Both models automatically select the optimal sensor (catalytic combustion or thermal conductivity) for highest accuracy and read percent propane gas over the full range (0.03 to 100%). A fast TRACK GAS scale helps locate propane leaks quickly. CO in flue gas and in ambient air is measured with 5ppm resolution (1 ppm resolution is optional) and with specificity when the detector is used with the external interference filter.

The detector comes with a standard 12 inch two piece probe, a metal telescoping flue probe with refillable interference filter, a manual, a laminated short guide to operation, a set of batteries, a carryall with pouch for probes, and a shoulder strap. Also included is:

Automatic Calibration (A-CAL TM)

Automatic calibration is a standard feature built into all Gas-Sentry detectors. Using Bascom-Turner's calibration gas, delivered either manually or by an automatic gas dispenser, detectors are automatically calibrated in about 30 seconds.

Lifetime Limited Warranty

There is a lifetime limited warranty on the detector's electronics and a three year limited warranty on sensors applicable to detectors and sensors in the USA. The pump and accessories are warranted for one year.


  • Docking Calibration (D-CAL TM) - Optional hardware and software allow automatic bi-directional serial IR communication between a Gas-Sentry, equipped with an optional sapphire window, and a docking station for calibration verification and record-keeping.

  • Extended Duty Flue Probe - for flue gas sampling lasting longer than 5 minutes such as during burner adjustment.

  • Gooseneck Probe - for increased speed of response on TRACK GAS scale.

  • Instrument Case - for storage of detector and accessories.

See also:

For additional toxic gas detectors see: