BTU4500 (3 Gas Model -Upgradeable) w/ All Above:
O2, CO, CO2, NO, NOx Included (Standard Range = 0-5000 ppm)
Upgradeable to Add NO2, SO2 or CxHy (4-Gas Analyzer)
BUILT-IN, NON-THERMAL Printer + Paper Rolls
Software Included (save & email reports) (SW KIT)
High Range CO Sensor (0-50,000 ppm) Auto Dilution








