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Beschikbare talen
Beschikbare talen
3.0
I
To switch on the instrument press key marked "pH", after 3 min. the instrument will
automatically shut off.
II
pH-key = 0.00-14.00 pH, mV = +/- 1000 mV, °C = -20/+120°C.
III
Set the temperature for the test sample by holding down the "°C" key while turning the "°C"
dial on the right side to the correct temperature. The window automatically displays the pH
value when the "°C" key is not pressed.
IV
When you have the pH-meter model PH-65, step III will be lapsed.
V
Soil, sand, peat and similar materials must be mixed with distilled water with a ratio of 2 parts
water to 1 part soil. The C level on the sample vessel indicates 2 parts water and adding
sample materials to the A level gives a ratio of 1 : 2. Water and other liquids may be
measured directly.
I
Before measurement remove the electrode cover. This cover contains KCL preservation fluid
which keeps the measuring part of the electrode constantly wet. This is very important for
prolonging the live of the electrode and to prevent it for drying out.
II
Rinse the electrode gently in the water sample. The electrode is extremely fragile and care
must be taken to avoid firm impact with stones and other hard materials.
III
Calibration must be carried out at least one time every 2 weeks, using a fresh calibration
sample (pH-4 and pH-7). These can be obtained from your dealer or from Nieuwkoop. The
"pH-4"and "pH-7" set screw on the left side of the instrument is used to calibrate the pH-meter.
We advise to start your calibration always with the pH-7 liquid and then pH-4. Always rinse the
electrode before you go from the pH-7 into the pH-4.
IV
After the measurement, rinse the electrode with distilled-water and store in the KCL-liquid.
V
When "LO BATT" appears in the display, change the battery, low battery power may cause
failures.
VI
The pH-meter is also available as a combination instrument with EC and °C
(option: automatic calibration) or as continuous measurement/controller.
User manual:
Important for an accurate measurement:
6
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