Siemens Maxum II Reference Manual

Ch2
Ch1
Low Pressure
Switch Inputs
Location ID
Selector Switches
I
2
C Connector
Tubing Manifold
Figure 2-42 EPC Module Connections
Mechanical
The EPC is mounted
to right side wall of the
Electronic Enclosure.
Up to four (a total of 8
EPC channels) can be
installed in a single
Electronic Enclosure.
The EPC is easily field
replaceable using
common tools.
EPCs mounted on
right-hand wall of
analyzer
EPC Location In Analyzer
Electrical
The EPC is made up of a printed circuit board with two pressure transducers, two proportional
valves with associated electronic circuitry, manifold for pneumatic connections, and a
connector for I
2
C communication signals and DC power.
The EPC provides electrically controlled pressure for helium, hydrogen and nitrogen carriers
etc., as well as low flow and low pressure (<100psi) applications such as flame detector fuel.
The EPC operates from 24VDC at 4 watts. Electrical connections are made using plug type
connectors.
Electronic Compartment Component Descriptions and Maintenance Procedures
2.9 Electronic Pressure Control Module
Maxum II Reference Manual
82 Manual, 7/2017, 2000596-001

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)