Fast Response Oxygen Analysers (Bench Top) - G250 & G150
- Measures from 25% to 0.1 ppm oxygen
- Unique non-saturating dualcell sensing system
- Programmable 4 to 20mA analogue outputs
- Two programmable alarms
- Autoranging displays
View Full SpecificationThe 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.
Advanced software provides 'seam-less' and fully automatic transfer from one cell to the other. No special skills are required to use the analyser.
A programmable 4 to 2OmA output is provided and can be set between the ranges of 0 to 20ppm and 0 to 25% oxygen.
Two alarm channels, programmable by the user to be high, low or off, each provide one set of volt-free changeover contacts and can be set to any concentration within the span of the instrument.
The G250 is completely self contained and is supplied as standard with a sampling pump, filter, flow control valve and flow monitor.
