Elster GmbH
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EnCal 3000 - Hardware Manual
22/02/2018
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2.2
Enclosure
The enclosure of the EnCal 3000 is a custom EX design, with various spe-
cific features.
Essentially the explosion proof enclosure consists of a low base, to which a
relatively high cap is attached through a screw connection. Once the cap is
removed from the base, almost all the internal components are directly
reachable:
Two analytical modules (which do each a part of the total analy-
sis, in parallel)
Processor board
Internal sample system (stream selection and pressure regula-
tion)
All electrical field connections (Ethernet, ModBus, analogue IN,
digital I/O, solenoid drivers), fuses, switches and jumpers
Only if the Interconnection Board, which connects the analytical channels and the Processor Board, has to be ex-
changed, the unit has to be taken apart. For all other check or maintenance procedures, only the cap has to be re-
moved.
The compactness of the unit (installation clearance Ø 55 cm x 70 cm height, weight <30 kg) allows it to mount the de-
vice on a platform, a pole or to the wall. Mounting holes at the back (M8) and in the bottom (M5) allow for fixation.
All gas tubing (sample lines, cal. gas, vent lines, helium in and out) and all electrical connections can be directly con-
nected to the unit.
The design of the enclosure
allows for the harshest conditions imaginable in natural gas applications:
Explosion proof certified for ATEX / IECEx / NEC
IP 66 ingress protection against dust and precipitation (suitable for offshore applications)
Standard temperature range: 0 to +60 ° C (32 to 140 ° F), optional extension for devices with ATEX/IECEx-
Approval. 0 to 55°C (32 to 130°F) for devices with FM-Approval
with internal heating to -20 ° C (-4 ° F), with internal heating and external insulation to -40 ° C (-40 ° F)
EMC certification according to EN 61000-6 - 2/4 (Industrial devices)
Vibration and shock test according to OIML D11 11- 1/2
Coating according to Shell specifications DEP 40.4800.30 for off-shore applications
