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8.8. Sensors
ATC - Absolute Temperature Calibration
•
Select the submenu „Temp.Sensor“ with enter
.
•
Select the desired option with the up/down cursor keys
.
A flashing digit indicates that a value needs to
be entered i.e. set.
ATC Int.: used during the configuration of a Pt100 sensor
attached on the socket labeled “INT”.
ATC Ext.: used during the configuration of a Pt100 sensor
attached on the socket labeled “EXT”.
Setpoint range for internal or external calibration: ±9.99 °C.
•
Enter the desired correction value and set this value by
pressing ENTER
.
Thermometer (T
M
)
Programmable controller (T
L
)
Example:
1. Immerse temperature sensors individually or together in a
calibration bath at 50°C, for example, and allow the reading
to stabilize.
2. Both temperature values are displayed simultaneously on
the controller readout:
on the MULTI-DISPLAY:
49.20°C for temperature sensor attached to the socket
labeled
“INT”.
on DIALOG-DISPLAY:
51.22°C for temperature sensor attached to the socket
labeled
“EXT”.
3. Calculate the temperature difference between the
programmable controller (T
L
) and the thermometer (T
M
)
(change in T = T
M
- T
L
) and enter the correction value as the
ATC parameter.
4. For ATC Int, enter the correction value (for example
0.80 °C) with the keypad. Confirm entry with the Enter key
.
5.
6. For ATC Ext, enter the correction value,
(for example -1.22 °C) followed by the Enter key
.
7. Return to standard display with the Escape key
.
