4.4.2
Setting the TDS Conversion Factor (P4.4)
The factory default setting for TDS conversion factor is 0.5. If your solution has a different TDS factor,
you can improve accuracy by setting the TDS factor prior to calibration.
1. Press
SETUP.
2. Press
MI/
▲
or MR/
▼
, go to P4.0.
3.
Press ENTER a five times to scroll until you view P4.4 (tdS)
4.
Press ENTER. The upper display shows a value and the lower shows “tdS”.
5. Press MI/
▲
or MR/
▼
to select your calculated TDS conversion factor.
6. Press the ENTER to confirm.
7. Press the CAL/MEAS key to return to measurement mode.
4.4.3
Calibration with Conductivity Standard and TDS factor
After setting the correct TDS Factor, you can calibrate in the TDS mode.
1.
Calibrate with conductivity standards as described in 4.4
2.
Set the TDS factor as mentioned above (if not yet done).
5 MEASUREMENT
5.1 Temperature
Compensation
This meter can take measurements with automatic (ATC) or manual (MTC) temperature
compensation. Factory default is ATC on. For ATC, attach the conductivity/TDS electrode to the
meter. The ATC indicator will light on the LCD.
If the conductivity/TDS electrode is not properly attached to the meter or it has been damaged, the
ATC indicator will blink and the temperature display will show “Ur”. If the ATC indicator does not light
and the temperature display shows a reading, the meter might be in MTC mode.
5.1.1
Selecting Temperature Compensation mode (P4.3)
1. Press
SETUP
2. Press
MI/
▲
or MR/
▼
, go to P4.0.
3.
Press ENTER three times, to go to P4.3 The upper display shows “ATC” and the lower display
shows “P4.1”.
4. Press
ENTER
5. Press
MI/
▲
or MR/
▼
to select: “YES”, ATC is on
or
“NO”, ATC is off.
6.
Press ENTER to confirm selection.
7.
Press CAL/MEAS to return to measurement mode.
Note:
MTC should only used if ATC fails. For non-compensated measurements, set the coefficient to
0.0%.
5.1.2
Setting manual temperature compensation value
MTC enables you to enter the temperature value of your sample into the meter. This is the value at
which the readings will be temperature compensated. You can select an value between 0 and 100 °C
(32 and 212 °F). Default value is 25 °C.
1.
Set temperature mode to MTC (p 4.1.1) and go through step 1 to 7.
2.
Press CAL/MEAS. The CAL indicator will appear above the primary display.
3.
Press MODE. The primary display shows the current setting, the secondary display shows 25 °C
(77 °F) or its last set value.
4. Press
MI/
▲
or MR/
▼
to offset the temperature to your preferred settings.
5.
Press ENTER to confirm
Note:
To exit this program without confirming the MTC value, press CAL/MEAS.
5.2 Taking
Measurements
1.
Rinse the electrode with de-ionized or distilled water before use. Shake or air dry. To avoid
contamination or dilution of your sample, rinse electrode with a small volume of your sample
liquid.
2.
Press ON to switch on meter.
6
