Nova-Tech 2700 Series Benchtop Meters - Manual (Page 29)

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12. Conductivity, TDS, Salinity, & Resistivity
Calibration (manual adjustment)
For best results, periodic calibration with known accurate standards is
recommended prior to measurement. Calibrate with standards that are close in
value to your intended sample(s).
When using multi-point calibration, perform a calibration in each range that you
expect to use for best results.
If the electrode has been stored dry for some time, soaking in alcohol or clean
water for a few minutes can help performance.
1) Turn meter on, press MODE if needed for the appropriate mode.
2) Press CAL if needed to enter calibration mode. Rinse the electrode with
clean water then submerse into your calibration standard.
3) Use the up/down arrows to adjust the cell constant manually or press NEXT
to keep the nominal cell constant value and proceed with a typical manual
calibration (recommended). If adjusting the cell constant manually, press
ENTER after ‘Stable’ appears to confirm the adjustment.
Before and after a manual calibration constant adjustment
4) The upper display is the active reading while the lower display is the factory
default value without calibration. Use the up/down arrows to adjust the upper
display to match the desired calibration value. Press ENTER after ‘Stable’
appears to confirm the calibration. The calibrated value, Range (R) that was
calibrated and the calculated cell constant are now shown.