WIKA DIH62 - Handbuch (Seite 5)

WIKA operating instructions models DIH50, DIH52, DIH62 5
GB
14008548.02 03/2012 GB/D
Information
… points out useful tips, recommendations and information for efficient and
trouble-free operation.
DANGER!
...identifies hazards caused by electric power. Should the safety instructions not
be observed, there is a risk of serious or fatal injury.
WARNING!
... indicates a potentially dangerous situation in the hazardous area that can
result in serious injury or death, if not avoided.
2. Safety
WARNING!
Before mounting, commissioning and operation, make sure that the display is
suitable for the application.
Non-observance can result in serious injury and/or damage to the equipment.
WARNING!
This is protection class 3 equipment for connection at low voltages, which
are separated from the power supply or voltage by greater than AC 50 V or
DC 120 V. Preferably, a connection to an SELV or PELV circuit is recommended;
alternatively protective measures from HD 60346-4-41 (DIN VDE 0100-410).
Alternatively for North America:
The connection can be made in line with "Class 2 Circuits" or "Class 2 Power
Units" in accordance with CEC (Canadian Electrical Code) or NEC (National
Electrical Code).
Further important safety instructions can be found in the individual chapters of
these operating instructions.
2.1 Intended use
The field indicators models DIH50, DIH52 and DIH62 are used for converting an analogue
current signal (4 … 20 mA) into an indication of the corresponding measured value and are
intended for mounting in the field.
They comprise a display and operating unit without power supply for looping in 4 … 20 mA/
HART ® circuits.
1. General information / 2. Safety