JUMO exTHERM-DR, Руководство по эксплуатации, Страница: 78 / 100

11 Setup program
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11.3 Forgotten the code?
If you forget the code, it can be read out via the USB interface and the setup program.
h
Use Data transfer

from device.
The read-out code now appears in the setup program.
It can be kept as it is or changed.
If "0" is set and transferred to the device, the code interrogation is deactivated and the configuration level is freely accessible.
11.4 Special function: thermocouple reverse polarity protection
If the polarity of a thermocouple is reversed, measured values
are shown that do not reflect the real situation, for example,
negative temperatures may be displayed instead of the expect-
ed positive temperatures.
This may lead to the set limit value never being reached. For
this purpose, an additional limit value is defined at -205 °C by
default, which triggers the relay output controller K1 if the value
falls below this.
A suitable value must be selected here so that it is possible to
detect potential reverse polarity.