Short Description; Safety Instructions And Warnings; Use According To The Intended Purpose - testo 54 Serie Manual De Instrucciones

1 Short description

This digital display is an easy-to-use, microprocessor-
controlled device for the display (and the acquisition) of
measured temperature values. The temperatures are
measured by means of J, K and N thermoelectric cou-
ple sensors. They can display either the current mea-
sured value, the maximum value or the minimum value.
In case of power switch-off, the maximum and mini-
mum values are stored in an EEPROM. The values are
restored as soon as the display is powered again. The
Latch input is isolated electrically from the signal input
by means of an optocoupler. It allows storing the cur-
rent measured value.
The supply voltage (10 .. 30 V DC) is isolated electri-
cally from the signal input by means of a DC/DC con-
verter.

2 Safety instructions and warnings

Only use this display
!
– in a way according to its
intended purpose
– if its technical condition is
perfect
– adhering to the operating
instructions and the general
safety instructions.

2.1 Use according to the intended purpose

The digital display only may be used as a panel-moun-
ted device. Applications of this product may be found in
industrial processes and controls, in the branch of the
manufacturing lines for the metal, wood, plastics,
paper, glass, textile, etc., processing industries.
Overvoltages at the terminals of the digital display must
be limited to the values of overvoltage category II.
1. Before carrying out any installation or maintenance
work, make sure that the power supply of the digital
display is switched off.
2. Only use this digital display in a way according to
its intended purpose.
3. If its technical condition is perfect.
4. Adhering to the operating instructions and the
general safety instructions.
5. Adhere to country or user specific regulations.
6. The digital display is not intended for use in areas
with risks of explosion and in the branches exclu-
ded by the standard EN 61010 Part 1.
7. The digital display shall only operate if it has been
correctly mounted in a panel, in accordance with
the chapter "Main technical features".
If the digital display is used to monitor machines or pro-
cesses in which, in case of a failure of the device or an
error made by the operator, there might be risks of
damaging the machine or causing accidents to the ope-
rators, it is up to you to take appropriate safety measu-
res.
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