Conrad Electronic GX106 Bedienungsanleitung Seite 43

flows over. For limit value definition, you can fill the container to the
desired level, read off the value in status and enter this as limit value in
the software.
No output is switched.
2 TEMPERATURE INPUTS (T1 - T2) /
4 TEMPERATURE OUTPUTS (TMP1 - TMP4)
Two temperature sensors (Conrad order no. 198896) can be connected
to the two temperature inputs T1 and T2. The positive pole is connected
to the left screw clamp, the signal in the middle and the ground is con-
nected on the right screw clamp. The temperature range of the sensor
ranges from -40°C to +125°C. The input T1 must be selected if only one
temperature sensor is used. 0°C is output if no sensor is connected. The
outputs TMP1 to TMP4 are logically linked with the temperature control.
You can directly connect a relay to these outputs (CONRAD order no.
502892).
There are two different types of operation: range measurement and
difference measurement.
RANGE MEASURING: You can set a MAX, MIN and a TARGET temper-
ature value for both temperature sensors. The TARGET value is the
defined temperature. If the MAX value is exceeded, output TMP1 or
TMP3 is activated automatically (e.g. for a ventilator) until the tempera-
ture undercuts the TARGET value again. If the MIN value is undercut, the
output TMP2 or TMP4 is activated (e.g. for a heater) until the TARGET
value is exceeded again. This generates a hysteresis that prevents the
outputs from switching on and off in turn all the time.
Example: If you set the MIN to 20°C, the TARGET to 25°C and the MAX
value to 30°C), the output TMP1 is switched on when exceeding the
MAX value (31°C) and switched off when reaching the TARGET value
(25°C). The output TMP2 is switched when the temperature drops below
the MIN value (19°C).
DIFFERENCE MEASURING: In this case, only the temperature differ-
ence is controlled (e.g. forward/backward flow of a heater), meaning
there is no TARGET temperature. As soon as the difference (T2-T1)
exceeds the MAX value, the output TMP1 switches; if the difference (T2-
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