Hach POCKET TURBIDIMETER User Manual page 46

Table 1 Troubleshooting and Error Codes (continued)
Error
Code
E07 Second calibration point
(20 NTU) too low
E08 Second calibration point
(20 NTU) too high
Cause Possible Solution
During a calibration: Verify the proper
standard is being used and reread the
standard. Continue with the calibration.
Outside of calibration mode:
Verify standards, then redo the entire cal-
ibration.*
Call Hach Service.
During a calibration: Verify the proper
standard is being used and reread the
standard. Continue with the calibration.
Outside of calibration mode:
Verify standards, then re-do the entire
calibration.*
Call Hach Service.
34