Safety; Display And Jack Field - wtw pH 330i Instrucciones De Operación

Safety
pH 330l/340i
Safety
instructions
Display
Safety
The individual chapter of this operating manual use the following safety in-
struction to indicate various types of danger:
Warning
indicates instructions that must be followed precisely in order to avoid the
possibility of slight injuries or damage to the instrument or the environment.
Display and jack field
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Status display indicator
Sensor symbol
Measured value display
Function and
Temperature display
Jack field
1 pH electrode
2 Reference electrode
3 Plug-in power supply (only
pH 340i)
4 Temperature sensor
5 RS232 interface or analog output/
recorder (only pH 340i)
Warning
Only connect electrodes to the measuring instrument that do not return any
unallowed voltages or currents (> SELV and > current circuit with current lim-
iting).
Almost all electrodes - in particular WTW electrodes - fulfill these conditions.