KROHNE OPTITEMP TT 31 R EN - Manual (Page 10)

02/2011 – 4000753501 – MA OPTITEMP TT31CR R01 en www.krohne.com
10
4 Electrical connections
4.1 Safety instructions
ATTENTION!
Only trained and qualified personnel may carry out any work on the device. Always
observe the regional industrial safety and other safety regulations.
ATTENTION!
Observe the national regulations for electrical installations!
Only perform work on the electrical connections in the de-energized state. For all work
on the device, such as electrical connection or calibration work, use an electrostatically
safe (grounded) work station in order to minimize the risk of electrostatic discharge
(ESD).
Observe the voltage specifications on the rating plate!
DANGER!
When connecting devices with an Ex certificate, observe the corresponding chapters and
the instructions in this manual.
Observe the corresponding regulations and the declaration of conformity and type test
certificate for the device.
ATTENTION!
The transmitter is protected against polarity reversal. No damage will occur to the device
if the polarity of the supply voltage is switched. The output will then indicate 0 mA.
ATTENTION!
The "Input/output/PC isolation" as described in the data sheet means galvanic isolation,
comparable to a Zener barrier. Thus the TT 31 R can be supplied using a non Ex-
tested power supply unit.