Elster GmbH
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EnCal 3000 Quad– Hardware Manual
22/06/2017
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1.2
Process Gas Chromatography
The Encal3000 Process Gas Chromatographs (PGC) transfers the core laboratory technique to process
conditions. Apart from the analytical performance specifications, a PGC therefore needs to be designed to
match the following specifications:
Explosion safety.
Extreme environmental conditions:
o
High and low temperatures
o
Dust and precipitation
o
Electro-magnetic influence
o
Wind
o
Corrosive atmospheres
o
Vibrations and shocks
Complete stand-alone operation, no operator interference during normal operation:
o
Automatic and continuous analysis of different streams
o
Control and processing of analytical measurement executed internally, no peripheral device
needed
o
Automatic calibration and verification
Standard maintenance limited to yearly intervals, without need for specifically trained people
o
High reliability of the components
o
High degree of protection to any contaminant (liquids, vapour or particles) in the sample gas
Analytical results available in industrial formats (for natural gas industry serial ModBus or ModBus
TCP/IP)
Internal data storage of all data, including averages, calibration data, events and alarms, during the
last 35 days, to permit the operator to retrieve data in the past in case the continuous analysis was
interrupted for any reason.
The EnCal 3000 Quad is designed to meet or exceed all of the above requirements. At the same time the
unit uses analytical technology which can compete with the highest standards used in the laboratory world,
surpassing any PGC currently used in the natural gas industry.
