Change Calibration Options - Hach LANGE Manual Del Usuario

Before calibration, allow the system to operate for 30 minutes to make sure
the best measurement accuracy is achieved.
1. Physically measure the following items so that they can be compared
with the electronic readings:
• Range—the distance between the sensor and the water surface (for
the 2-point calibration procedure). See
• Depth—the water depth at the monitoring point (for both calibration
procedures). See Figure 7
2. Push the MENU key and select Sensor Setup, [Select Sensor],
Calibrate.
3. Select the type of calibration, and push ENTER:
Option Description
2PT DEPTH CAL Uses 2 points for calibration (recommended method)
1PT DEPTH CAL Uses 1 point for calibration
4. If the passcode is enabled in the security menu for the controller, enter
the passcode and push ENTER.
5. Select the option for the output signal during calibration, and push
ENTER:
Option Description
Active The instrument sends the current measured output value during the
calibration procedure.
Hold The sensor output value is held at the current measured value
during the calibration procedure.
Transfer A preset output value is sent during calibration. Refer to the
controller user manual to change the preset value.
6. If the 2-point calibration procedure is selected:
a. Push ENTER to electronically measure the distance between the
sensor and the water surface.
b. Wait for the value to stabilize, and push ENTER.
Note: The screen may advance to the next step automatically.
Figure 7 on page 12.
on page 12.
c. When the Set Range screen is shown, adjust the value to the one
that was physically measured, and push ENTER.
7. Push ENTER to electronically measure the water depth at the
monitoring point.
8. Wait for the value to stabilize, and push ENTER.
9. When the Set Depth screen is shown, adjust the value to the one that
was physically measured, and push ENTER.
10. Review the calibration result:
• Passed—the sensor is calibrated and ready to measure samples.
The range and depth values are shown.
• Failed—the calibration range or depth is outside the accepted limits.
Repeat the calibration. See
Troubleshooting on page 14 for more information.
11. If the calibration passed, push ENTER to continue.
12. If the option for operator ID is set to Yes in the Calibration Options
menu, enter an operator ID (4 characters) and push ENTER. See

Change calibration options

on page 14 for more information.
13. On the New Sensor? screen, use the arrow keys to select an option
and push ENTER:
Option Description
Yes The sensor was not calibrated previously with this controller. The
days of operation and previous calibration curves for the sensor are
reset.
No The sensor was calibrated previously with this controller.
14. When Calibration Complete is shown, push ENTER.
15. If the output mode is set to hold or transfer, select the delay time when
the outputs return to the active state, and then push ENTER.
Exit calibration procedure
If the BACK key is pushed during a calibration, the user can exit the
calibration.
Maintenance on page 14 and
English 13