KROHNE PTITEMP TT 20 C EN - Manual (Page 15)

ELECTRICAL CONNECTIONS
4
15
OPTITEMP TT 20
www.krohne.com 10/2011 - 4000753102 - MA OPTITEMP TT 20 R02 en
Electrical connections
4.1 Safety instructions
4.2 Electrical connection diagram
DANGER!
All work on the electrical connections may only be carried out with the power disconnected.
DANGER!
Observe the corresponding regulations, declarations of conformity, the type test certificate of
the device and the relevant instructions of this manual.
CAUTION!
Before you connect and operate a transmitter, always note the following items to avoid an
electric shock:
• For all work on the electrical connections use an electrostatic safe (i.e. grounded)
workplace! In this way you minimize the risk of electrostatic discharge (ESD).
WARNING!
Observe without fail the local occupational health and safety regulations. Any work done on the
electrical components of the measuring device may only be carried out by properly trained
specialists.
INFORMATION!
Look at the device nameplate to ensure that the device is delivered according to your order.
INFORMATION!
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.
INFORMATION!
To avoid measuring errors, all cables must be connected properly and the screws tightened
correctly.
Figure 4-1: Pt100, 3-wire connection
INFORMATION!
The transmitter has a polarity protection, connecting the power supply with wrong polarity will
not harm the transmitter.
.book Page 15 Friday, October 14, 2011 11:22 AM