EUTECH INSTRUMENTS 2700 Manuel d'instructions télécharger pdf (Page 39)

0% Calibration

7) After compl

eting steps 1 thru 6 for 100% saturation calibration, place your

electrode in zero oxygen solution (0.08M sodium sulfite). Continuous stirring

is not required.

8) The primary reading is the current measured

value. Be patient—the reading can take

several minutes to reach 0% saturation!

9) Whe

n the reading has finally stabilized and

locked on 0% press ENTER to confirm the

calibration.

mg/L or ppm (Con

centration) Calibration

1) Con

nect the DO electrode and power on DO 2700 for 5-15 minute warm up.

2) Press

MODE if needed for concentration measurement mode.

3) Rin

se the probe well with clean water then place into your solution with a

known dissolved oxygen concentration value (i.e. determined by titration or

another instrument).

4) Press

CAL and switch the stirrer on. The upper reading is the current

measured value. The lower reading is the factory default reading for

comparison, along with salinity and temperature correction shown.

A manual DO concentration calibration

5) Allow the

reading to stabilize. Use the up/down arrows to adjust the upper

reading to match the DO concentration of your solution.

The minimum

concentration calibration value is 2.00 mg/L. Press ENTER to confirm the

calibration.

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EUTECH INSTRUMENTS 2700 Manuel d'instructions Page 39