Multiple gas analyzer: oxygen (O2), carbon dioxide (CO2)
G250 & G150 Hitech Instruments Ltd.

The G250 and G150 fast response oxygen analysers operate identically, differing only in the way they are packaged.

For transportable bench-top use the G250 shown in the photograph offers maximum convenience.

Where fixed installation is required the 19-inch rack mounting G150 offers the perfect solution.

Exceptional range and speed are accomplished by using a unique micro-processor controlled dual-cell sensor system. Two measuring cells are employed: one measures percentage concentrations, the other low-level parts per million (ppm) concentrations. The low evel cell is maintained at a low oxygen level in a fully sealed condition until it is required for use. The concentration of the sample is initially measured by the high level cell. When the high-level cell senses a low level of concentration in the sample, the electronic control automatically diverts the sample to the low-level cell. Because this cell is maintained at a low level it responds rapidly and accurately to measure the low concentration. Safeguards, built into the analyser control system, protect the low-level cell from being exposed to high concentrations.