UM - 300

  • Wide measuring ranges for both indoor environmental measurements
  • Automatic calibration with a standard gas
  • Stable zero output enables constant monitoring
  • Easy trend analysis with data logger function
  • 3 power sources (Alkaline dry battery, Ni-Cd battery(optional), AC100V(optional)


Model Number UM-300
Measuring gas Carbon monoxide Carbon dioxide
Measuring Range 0 - 100.0ppm 0 - 10,000ppm
Resolution 0.1ppm 10ppm
Accuracy Within ±2.5ppm at 0 - 10ppm;
Within ±5ppm at 11 - 100ppm
Within ±50ppm at 0 - 2,000ppm; Within ±100ppm at 2010 - 5,000ppm; within ±500ppm at 5,010 - 10,000ppm
Power Source 4 x Size AA Alkaline batteries, AC 100V,
Rechargeable Ni-Cd battery
Continuous Operation About 6 hours with Alkaline dry battery
Operating Temperature Range 0 - 40℃
Dimensions 230(W) x 137(D) X 90(H)mm
Weight Approx. 1kg (excluding batteries)
Standard accessories Carrying case, Alkarine batteries, Zero filter
Optional accessories Rechargeable Ni-Cd battery, AC adaptor(100V),
Output cable(DC 0-1V), Data output kit(RS-232S cable, Software), Calibration gas