Gas-Ranger™ Gas Detectors And Analyzers From Bascom Turner Instruments

Rugged, All-Weather Gas Detectors

All Gas-Ranger models are now available for purchase through our online store


The Gas-Ranger™ portable methane, and combined methane, carbon monoxide, hydrogen sulfide and oxygen detectors are intrinsically safe, microprocessor-based instruments designed to test ambient air and flue gas over a wide temperature range.


Working Features

  • Measurements over the range of gas from 50 ppm to 100% gas
  • A calibrated Track Gas scale with quick response displays in 50 ppm intervals
  • Bar Holing: Peak and sustained readings after a fixed time
  • High speed pump: High speed pump for fast bar holing
  • Visual and audible alarms for all monitored gases


  • High-impact Xenoy Alloy case for tough environments
  • O-ring sealed construction for maximum weather protection
  • Bright, highly efficient LED display readable at 20 feet
  • Easy to use: a single selector switch sets mode and scale

Bottom Line

A rugged, reliable, easy-to-use detector for construction crews and other gas-utility personnel.


Gas Ranger - Portable Gas Detector Models and Specifications Models and Specifications - PDF

Gas Ranger - Portable Gas Detector Short Guide Short guide (abbreviated operating manual) - PDF

After a preset time, the Gas-Ranger displays peak and sustained bar hole gas readings

Features Common To Gas-Ranger Multifunctional Instruments Include:

  • Leak Tracking: with fast sensitive scale (50ppm)
  • Automatic 2 Liter/Minute Sampling: intrinsically safe high capacity pump
  • Automatic Display Peak and Sustained Gas: after prefixed sampling time or volume from bar hole
  • Operation on 2-D Sized Batteries: removable without tools and good for over 1000 bar hole gas measurements
  • Tough, Watertight Package with Strap: housed in high impact Xenoy Alloy with o-ring seal; carrying strap for hands free portability
  • Automatic Calibration: with Bascom-Turner's calibration gas
  • Automatic Zero: zero adjusted automatically
  • 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
  • Intrinsically Safe: UL listed for hazardous locations, Class I, Div. 1, Groups A, B, C, and D atmospheres.
  • Optional Docking Calibration: stores before and after calibration readings, FAXes calibration reminders, and performs complete diagnostics

Gas-Rangers Come In Several Models Specifically Designed For Detecting:

Gas-Ranger being used with metal bar hole probe
Gas-Ranger's high speed internal pump
is ideal for leak classification.