Safety; Explanation Of Symbols; Intended Use - WIKA GD-20 Series Operating Instructions Manual

3. Safety

3. Safety

3.1 Explanation of symbols

WARNING!
... indicates a potentially dangerous situation that can result in serious
injury or death, if not avoided.
CAUTION!
... indicates a potentially dangerous situation that can result in light injuries
or damage to property or the environment, if not avoided.
Information
... points out useful tips, recommendations and information for efficient
and trouble-free operation.

3.2 Intended use

These gas density sensors are designed for use in plants filled with SF
tive insulating gases. There, the status variables pressure and temperature are measured
permanently. From this, the gas density sensor calculates the gas density value to assess
the plant status. It is possible to read out all the specified parameters via the RS-485 inter-
face in the Modbus
®
value (p at 20 °C [68 °F]) by means of a 4 ... 20 mA current signal (only model GD-20-A).
The model GD-20 gas density sensors are therefore used for permanently monitoring the
stated status parameters in gas tanks.
The use of the GD-20 in dangerous process fluids (cf. pressure equipment directive fluid
group 1, see 2014/68/EU, article 13) is excluded. For a suitable product, please contact
the technical support (→ contact information at www.wika.com).
Only use the instrument in applications that lie within the technical performance limits.
The manufacturer or operator of the machine or plant in which the instrument is used
must ensure the compatibility of the wetted parts with the medium used.
The technical specifications contained in these operating instructions must be obser-
ved. Improper handling or operation of the instrument outside of its technical specifica-
tions requires the instrument to be taken out of service immediately and inspected by an
authorised WIKA service engineer.
The manufacturer shall not be liable for claims of any type based on operation contrary
to the intended use.
WIKA operating instructions gas density sensor, model GD-20
protocol (only model GD-20-D) or only the compensated pressure
gas and alterna-
6
7
EN