Nova-Tech pH 110 User Manual
Page 23
Instruction Manual
CyberScan pH 11 / 110
19
5.3 Taking
Measurements
Be sure to remove the electrode soaker bottle or protective rubber cap on the
electrode before measurement.
To take readings:
1. Rinse the probe with de-ionised or distilled
water before use to remove any impurities
adhering to the probe body. If the pH electrode
has dehydrated, soak it for 30 minutes in
electrode storage solution or 2M – 4M KCl
solution (sold separately).
2. Press ON to switch on meter. The MEAS
annunciator appears on the top center of the
LCD. The ATC indicator appears in the lower
right-hand corner to indicator Automatic Temperature Compensation (section
5.2 on Manual Temperature Compensation).
3.
Dip the probe into the sample.
When dipping the probe into the sample, the sensor or the glass bulb of the
electrode must be completely immersed into the sample. Stir the probe gently in the
sample to create a homogeneous sample.
4.
Allow time for the reading to stabilise. Note the reading on the display.
5.
To toggle between pH and mV (or Rel mV) readings, press the MODE key.
5.3.1 Taking measurements with READY indicator selected on
If the READY indicator has been activated, the READY annunciator lights when the
reading is stable
2
*. You can switch the READY indicator on or off in SETUP
program. See 9.2.1 - P1.1: READY Indicator and Auto Hold function on page 34.
5.3.2 Taking measurements with the AUTO HOLD feature selected on
This feature is available on model pH 110 only.
When a reading is stable for more than 5 seconds, the AUTO HOLD feature will
automatically “HOLD” the reading. The “HOLD” indicator appears on the left side of
the display. Press the HOLD/ENTER key to release the reading. Switch the Auto
Hold feature on or off in SETUP program in section 9.2.1 - P1.1: READY Indicator
and Auto Hold function on page 34.
2
The READY indicator appears and the reading holds until the measured value exceeds the tolerance (±0.02 pH;
±0.2 mV <400; ±2 mV > 400). Then, the READY annunciator turns off.
MEAS
pH
ATC
°C
8.23
21.3
Figure 17: Measurement
mode
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