Hach 3700 Serie Manual Básico Del Usuario página 19

Figure 10 Sensor in reference solution
3. Wait for the sensor and solution temperature to equalize. This can take 30 minutes or more if the
temperature difference between the process and reference solution is significant.
4. Push the MENU key and select Sensor Setup, [Select Sensor], Calibrate.
5. Select Sample Cal and push ENTER.
6. For the sc200 or sc1000 controller, select the calibration for the specified parameter and push
ENTER:
• Conductivity—Cond Cal
• TDS—TDS Cal
• Salinity—Cond Cal
• Concentration—Conc Cal or Cond Cal
Note: Refer to the sensor configuration menu if the option that is necessary is not shown.
7. If the passcode is enabled in the security menu for the controller, enter the passcode.
8. Select the option for the output signal during calibration:
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.
9. With the sensor in the reference solution, push ENTER.
10. For the sc100 controller, go to step 13.
11. Enter the reference temperature of the reference solution and push ENTER.
12. Enter the slope of the reference solution and push ENTER.
13. Wait for the value to stabilize and push ENTER.
Note: The screen may advance to the next step automatically.
14. Enter the value of the reference solution and push ENTER.
15. Review the calibration result:
• Passed—the sensor is calibrated and ready to measure samples. The slope and/or offset
values are shown.
• Failed—the calibration slope or offset is outside of accepted limits. Repeat the calibration with
fresh reference solutions. Refer to
on page 23 for more information.
16. For the sc100 controller, go to step 20.
17. If the calibration passed, push ENTER to continue.
18. If the option for operator ID is set to Yes in the Calibration Options menu, enter an operator ID.
Refer to Change calibration options
Maintenance on page 22 and
on page 21.
Troubleshooting
English 19