Siemens Maxum II Service Manual page 19

The detector temperature is factory set depending upon the application. The temperature is
normally set equal to or higher than the oven temperature and at minimum 80°C.
Detector Gas Supply
For information on detector gas-supply requirements. see the Maxum II Official Product
Specifications (A5E03012338001)
42017542/maxum-edition-ii%3A-explosion-protection-safety-standards?lc=en-
WW&pnid=17741). This publication gives approximate requirements. Specific requirements
depend on the application.
Note
The FPD is a very sensitive detector. The gases and their supply lines must be extremely clean
and sulfur free to achieve a high signal/noise ratio.
Selection of Carrier Gas
Nitrogen, helium, argon or hydrogen can be used as the carrier gas. If hydrogen carrier is
used, the required flow of hydrogen flame fuel will be reduced. For the FPD II, the total
hydrogen flow (combined flame fuel and carrier) will be ~100-130 mL/min.
Maxum Edition II Detectors
Service Manual, May 2018, A5E42019847001
(https://support.industry.siemens.com/cs/document/
Flame Photometric Detector
19