The metered sample is mixed with a continuous flowing stream of hydrogen. The mixed gases are heated together in a reducing catalytic furnace at a temperature between 650°C and 1200°C, depending on application, where the sulphur compounds in the sample are converted to H2S.
Using the NOVASULF™ series colorimetric analyser, the resulting H2S is measured on channel one and in parallel the H2S is measured on channel two. Temperature (zero) drift is eliminated in this analyser by the use of a single optical sensor.
The benefits of this technology can be summarised as follows:
- Measurement specific to Total Sulphur & H2S
No interference from other components - Wide range capability
Measures between 0-250ppb to 0-2000ppm - Low volume humidifier
Response times as low as 20 seconds - Single optical sensor
Eliminates temperature drift
Lowers running costs - Fibre optic link between housings
Reduces affects caused by ambient
temperature swings - 2 detection modules
Minimises capital investment - Multi-streaming capability
Will control 2 streams with one controller
