Safety; Explanation Of Symbols; Intended Use - WIKA GD-20 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
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
interface in the Modbus protocol (only model GD-20-D) or only the compensated pressure 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 observed. Improper handling or
operation of the instrument outside of its technical specifications 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
gas and alternative insulating gases. There,
6
EN
41