Siemens Maxum II Service Manual

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) (https://support.industry.siemens.com/cs/document/
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.
Flame Photometric Detector
Maxum Edition II Detectors
Service Manual, May 2018, A5E42019847001 19

Siemens Maxum II Specifications

General

Category	Gas Chromatograph
Measurement Principle	Gas Chromatography
Communication Protocols	Modbus, Ethernet, Profibus
Operating Temperature	-20°C to 55°C
Power Supply	24 VDC or 100-240 VAC
Mounting	rack mount
Applications	Refinery, chemical, petrochemical, natural gas
Detectors	Thermal Conductivity Detector (TCD), Flame Ionization Detector (FID)
Sample Inlets	Multiple
Dimensions	Varies by configuration (e.g., 19" rack mount)