WIKA operating instructions RTD and TC, intrinsically safe designs
3345267.08 06/2011 GB/D
15
GB
WARNING!
Before storing the instrument (following operation), remove any residual media. This
is of particular importance if the medium is hazardous to health, e.g. caustic, toxic,
carcinogenic, radioactive, etc.
6. Commissioning, operation
WARNING!
When the thermometer is mounted, the temperature must not drop below the allowed
operating temperature (environment, medium) or exceed it, even when taking
convection and heat radiation into account!
WARNING!
Thermometers must be earthed if dangerous voltages could be expected at the
connection wires (caused, for example, by mechanical damage, electrostatic
discharge or induction)!
6.1 Electrical connection
CAUTION!
■
Damage to cables and wires, and to connection points, must be avoided
■
Provide nely stranded conductor ends with end splices (cable assembly)
■
Both the internal capacitance and inductance must be considered
For the electrical connections of thermometers (e.g. connection circuit diagrams, tolerance
values, etc.), please refer to the appropriate data sheets. If head transmitters or digital displays
have been built into the connection housing, these data sheets must also be given proper
consideration.
5. Transport, packaging and storage / 6. Commissioning, operation
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