eutech-instruments alpha con 1000 conductivity controllertransmitter ユーザーズマニュアル
68X216802
6 Calibration Mode
You can reach the Calibration mode directly from the Measurement mode by pressing the CAL key and
entering the Calibration security code. You can also reach the Calibration mode from the Advanced
Setup mode.
6.1 Conductivity Calibration
Calibration is always carried out in the specific range selected. The Conductivity Controller allows a
one-point calibration.
1) Enter Calibration mode. While in the Measurement mode,
push the CAL key and scroll to Calibration code “11”. Push the
ENTER key again. The upper display reads “CAL” and the lower
display shows “Con”.
2) Press the ENTER key. The controller displays the status of
2) Press the ENTER key. The controller displays the status of
the Cell resulting from the previous calibration. Press the ENTER
key once again to carry out calibration.
3) Immerse the Conductivity cell in a suitable standard
3) Immerse the Conductivity cell in a suitable standard
solution, whose value is within the measurement range selected
in the controller. Agitate the Cell in the solution to remove any
trapped air-bubbles.
4) Once the reading has stabilized, use the
4) Once the reading has stabilized, use the
∆∆
or
∇
∇
keys to
adjust the measured value to that of the standard solution. Press
the ENTER key to accept the value and the controller displays
the revised condition of the probe. Note: if the percentage
difference between the measured value and the standard
solution is greater than 40%, the controller will not accept
the calibration. Change the Cell.
5) Press the ENTER key. If you entered the calibration mode
5) Press the ENTER key. If you entered the calibration mode
using the CAL key, the controller will return to the Measurement
mode. If you entered the calibration mode from the Advanced
Set-up mode, the controller will return to the sub-function menu.
Note: If there is a calibration error, the controller displays “ERR”. If this happens, push both the
∆∆
and
∇
∇
keys (escape) to restart the calibration beginning from step 1.
Note: When calibrating with manual temperature compensation, the controller automatically changes
from the preset process temperature to the calibration temperature. After leaving the Calibration mode,
the controller switches back to process temperature (for setting the calibration temperature and the
process temperature, see section 7.4.3).
CAL
CAL
Con
Con
HOLD SETUP
100
100.0
.0
CCEELL
HOLD CAL
HOLD CAL
1413
1413
25.0
25.0
µµ
S
o
C
ATC
100
100.0
.0
CEL
CEL
HOLD CAL
%
%
6
6
6
6