Instruction manual

NGA 2000 MLT Hardware
TECHNICAL DESCRIPTION
1 - 3
Emerson Process Management GmbH & Co. OHG
Instruction Manual
90002929
07/2006
1.3.2 Magnetically Operated Touch Panel
Analyzers intended either to be used in hazardous area or for outdoor usage (e.g. MLT 2 or CAT 200)
are provided with a magnetically operated touch panel. This special version ensures ingress
protection (IP) and resistance against mechanical shocks. On account of its design it requires some
special measures to operate the corresponding analyzer in a safe manner, so read the following
instructions carefully!
1.3.2.1 Magnetic Touch Panel Elements
Whereas standard front panels are using keys for operating the analyzer the magnetically operated
touch panel uses contactless technology instead. This results in a slightly different design:
Each standard panel key is replaced by a reed relay located behind the front panel design foil. (CAT
200, MLT 2 only: The sequence of the 4 keys at the right side has changed due to ergonomic reasons.)
Fig. 1-2: Magnetically Operated Touch Panel, Front view
OPERATING FRONT PANEL: MAGNETICALLY OPERATED TOUCH PANEL