Hydrogen sulfide analyzer
Galvanic
The concentration of H2S is directly proportional to the rate of change of staining on the lead acetate tape. This principle is the basis for a number of ASTM methods, and is by far the most reliable and simplest way to measure H2S in process.
The analyzer moves the treated paper tape one section at a time. Depending on the sample concentration, the tape will begin to darken at a rate proportional to the concentration of H2S in the sample stream. The analyzer exposes a fresh section of tape to the sample inside the sample chamber every 3 minutes.
