Gas-Sentry™ Portable Lightweight Multigas Detectors From Bascom Turner

Reliable, Lightweight Multigas Detectors

All Gas-Sentry® models are now available for purchase through our online store.


The Gas-Sentry®, developed with support from the Gas Research Institute (GRI), is a microprocessor-based, intrinsically safe detector for natural gas and, when equipped with appropriate sensors, for carbon monoxide and oxygen.

Working Features

  • Measurements over the range of gas from 100 ppm to 100% gas
  • A calibrated Track Gas scale with quick response displays in 0.01% gas intervals
  • Easy to use: one selector switch sets scale
  • Audible and visual alarms for all monitored gases
  • Click to read more about the Sentry's special features


  • Bright, highly efficient LED display readable at 20 feet
  • Leatherette "carry-all" accomodates instrument and probes
  • Special filters for flue gas testing and for hydrocarbons
  • A tough package weighing only 20 oz

Bottom Line

A reliable, accurate, highly portable gas detector specifically designed for service personnel


Checking For Gas Thru Holes
in Manhole Cover
Carryall With Pouch for
Standard & Flue Probe

Features Common To Gas-Sentry Multifunctional Instruments Include:

  • Automatic Calibration: With Bascom-Turner's calibration gas
  • Automatic Zero: zero adjusted automatically
  • Automatic Sampling: intrinsically safe pump samples air or flue gas
  • Automatic Self Tests: of battery, sensors, pump, and connections
  • Audible Alarms: factory set and user adjustable
  • Easy-to-Use: one selector switch sets mode and scale Easy-to-Read, Bright Display: digital, LED display for indoors and outdoors
  • Dust and Water-Block Filter: keeps dust and water out
  • Tough, Light-Weight Package with Carryall: housed in high impact ABS, detector weighs only 20 ounces; leatherette carryall for hands free portability
  • 2 in 1 Bump Gas: quick CO and GAS sensor test in thumb-size pkg.
  • Intrinsically Safe: UL listed for hazardous locations, Class I, Div. 1, Groups A, B, C, and D atmospheres.

Instruments Specifically Designed For And Used By: