Using IUP], [DowN] and DIGITl soft-keys, enter the salinity value. Press[ENTER] to confirm. The message"SALINITY SETTING SAVED" will be displayed as shown below
NOTE: For accurate DO readings, the salinity setting MUST match the salinity of each sample measured.
6,2 Zero Calibration
- In rare applications, the accuracy of the calibration can be improved by performing a zero calibration along with one of the procedures discussed previously All oxygen probes have a small background current, even in the absence of oxygen. Model 5000/5100 compensation is based on the average background current of probes. This is the default zero value. Using this average will result in errors with probes whose background current differs from the average. Note: Errors will be insignificant in most applications. See 10 Understanding Dissoived oxygen Error Factors For highest accuracy measurements, a zero calibration should be performed to compensate for the specific background current of the probe in use. To palibrate to a true zero, place the probe in a zero oxygen environment and adjust the