C400 Series Operating Manual
10
Item
Display
Selection
Sub Menu
System
Terminal Current
Tuning
Current 1: 4mA
(The positive and negative ends of the
multi-meter are connected to the current
1 or current 2 output terminals of the
instrument key respectively, press
key
to adjust the current 4mA or 20mA , press
[ENT]
to confirm.)
Current 1: 20mA
Current 2: 4mA
Current 2: 20mA
Relay Test
Relay 1 — Testing
Press
[ENT] to test
Relay 2 — Testing
Calibration
Press
[MENU] to enter the calibration menu and select
Calibration
Standard Calibration
Calibration Point 1
Enter given standard liquid value: Defa
Calibration Point 2
Enter given standard liquid value(Example:84μS/cm)
Calibration Point 3
Enter given standard liquid value(Example:1413μS/cm)
Calibration Point 4
Enter given standard liquid value(Example:12.88mS/cm)
Calibration Point 5
Enter given standard liquid value(Example:111mS/cm)
Field Calibration
Field Calibration
Enter Value
Offset Adjustment
Enter Value
Slope Adjustment
Enter Value
Calibration of Standard Solution
The sensor has been factory calibrated before delivery and users can use it directly.
Note: Calibration if required can be made using at least one of the five calibration points. Not all points are required
for sensor calibration
If calibration is required, prepare a suitable standard reference liquid with known range value. Press the
[MENU] button to enter the
Setting Mode — select the calibration point.
Enter the corresponding reference calibration value, then press
[ENT] key to confirm and enter the calibration screen.
(If the instrument has been calibrated, the screen shows the calibration status. press the
key to switch the calibration state of the
calibration point. If re-calibration is required in this mode, press the
[ENT] key again to enter the re-calibration.)
In the standard solution calibration mode, press the
key to switch the calibration points, press the
[ENT] key to start calibrating. If
prompted to enter the calibration security password, press the
key or
key to set the calibration security password, and then press the
[ENT] key to confirm the calibration security password.
Voltage:
Point 1
0
µS/cm
Done
-5 mV
Conductivity / TDS / Salinity / Resistivity
Calibrating
Calibration
Sensor Voltage
Successful Calibration
