KROHNE OPTITEMP TT 30 C-R EN - Manual (Page 19)

ELECTRICAL CONNECTIONS
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OPTITEMP TT 30 C/R
www.krohne.com 11/2012 - 4000753302 - MA OPTITEMP TT 30 C/R R02 en
Electrical connections
4.1 Safety instructions
DANGER!
All work on the electrical connections may only be carried out with the power disconnected.
DANGER!
Observe the national regulations for electrical installations!
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).
• Assure that the all removable covers were closed after any work on the device to protect it
from dirt.
• Maximum common-mode voltage on the input is restricted to 50 VAC / 75 VDC.
DANGER!
Never connect or operate a non-Ex version of a transmitter in potentially explosive areas,
otherwise it might cause an explosion that can result in fatal injuries! Before you connect and
operate a transmitter version with an Ex approval, always note the following items to avoid an
explosion which may result in fatal injuries:
• Connect the Ex version only to Ex approved sensors or sensors that meet the requirements
for "simple apparatus" in EN 60079-11:2007, section 5.7.
• Observe the corresponding regulations, the declaration of conformity, the type test certificate
of the device and the relevant instructions of this document.
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.
.book Page 19 Friday, November 9, 2012 3:50 PM