Testo 454 Precautions - TESTO 454 Getting Started

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1. testo 454 precautions

1. testo 454 precautions
Risk for
1 Alarm contact:
The alarm contact must not be integrated into safety-related processes, as the
contact poses a hazard for persons and property, the system and the instrument.
2 Analog output:
The analog outputs must not be used to control/regulate safety-related processes.
They are designed to supply data to recorders, etc. Danger of system malfunction!
A total of 12 cover plugs is supplied for the analog outputs (banana sockets).
The EMC conformity certificate is valid only if the plugs are used on the
non-assigned banana sockets.
3 Logger, powerbox
Operating loggers and powerboxes beyond their specified limits can lead to
expulsion of hydrogen (H ) from the battery pack. Danger of explosion!
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4 Entire system:
Do not connect any part of the system to live objects (i.e. supplied with voltage)
for measurement. Danger of electrical shock!
Protect system from overvoltage.
5 CO measurement
Ensure that there is sufficient ventilation when measuring toxic gases (CO).
Danger of poisoning!
6 Power supply to entire system:
Always ensure that the entire system is supplied with sufficient power
(fully charged batteries/rechargeable batteries, mains unit).
Danger of the entire system becoming unstable.
7 EMC:
Exceptionally high amounts of electromagnetic interference can lead to deviations
in reading accuracy that no longer conform to standard. Danger with connected
analog/switch outputs!The plug socket should have a protected earth conductor
connected. The temperature display with control unit and separate probe can jump
by up to 2°C in the case of a thermocouple with earth contact in connection with
a switched-mode power supply.
8 Process security for system monitoring:
Very dynamic signals can overload processes. In order to stabilise process
security for systems with dynamic signals we recommend observing
Namur recommendation NE43, which makes specifications regarding signal
conditions. Danger of overloading systems!
9 Condensation
Avoid exposing the instrument and instrument electronics to condensation.
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