Voltcraft PHT-01 ATC pH Meter Stick 0 - 14 pH PHT-01 ATC User Manual

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Dear customer,
Thank you for acquiring this product. With this Voltcraft® product, you have acquired a state-of-the-art
device.
Voltcraft® - This name stands for above-average high-quality products in the field of measuring,
charging and network technology. The products are characterised by expert competence,
extraordinary efficiency and permanent innovation.
And now enjoy your new Voltcraft ® product!
With this measuring device it is very simple to find out how acidic or alkaline a solution is. The area of
application is the domestic area but also (fish) ponds, swimming pools, photo laboratories, schools,
nurseries, etc. The measuring device is not suitable for the use in the industrial area (eg
galvanotechnics).
ATC (automatic temperature compensation) makes sure that there are stable measurement values,
even in the case of fluctuating temperatures.
The pH meter stick PHT-01 ATC is a state-of-the-art product and therefore meets the requirements of
the current European and national guidelines. All the relevant documents have been deposited at the
manufacturer.

• Measurement of pH levels from 0.00 to 14.00 pH of dead (idle), nonflammable or non-corrosive

liquids (immersion depth min. 10 or max. 80 mm); with automatic temperature compensation ATC.

• Only a 9 V block battery may be used as power supply.
Any use other than one described above damages this product. Moreover, this involves dangers, such
as shortcircuit, fire, electric shock etc. Always observe the safety instructions!

Measuring devices should be kept out of reach of children!
In industrial facilities, the safety regulations laid down by the professional trade association for
electrical equipment and facilities must be adhered to.
Check the measuring electrode for damage before each measurement.
Given adverse lighting conditions eg in the case of sunlight, the visibility of the optical display can be
affected.
In the case of deliberate mechanical (deformation) or electrical changes (modification) of the
measuring device the right to claim under guarantee expires.
Be careful when handling flammable or corrosive liquids. Make sure to wear protective gloves, goggles
and apron. Only carry out measurements in well ventilated surroundings.
Dip the sensor head into the idle measuring medium. Immersion depth must not be under 10 mm or
exceed 80 mm.

• Mearuring device PHT-01 ATC
• Soaking solution
• 7.00 pH buffer/calibration solution
• Calibration screwdriver
• stable storage box and operating instructions

In order for the PHT-01 ATC to work properly, it needs to be equipped with a 9 V block battery. When
the display disappears, you need to change the battery. For this purpose, proceed as follows:
• Open the battery compartment on the back of the PHT-01 ATC by pushing the battery compartment

lid off with the belt clip.

• Replace the old battery with a new type of the same battery, slide the battery compartment lid back

onto the PHT-01 ATC until it clicks into place.

• Switch on the PHT-01 ATC by pressing the ON/OFF button.
• Remove the square protective cover of the device as well as the round protective cover of the pH

electorde and pull out the pH electrode until the necessary distance has been reached. Because of
the slide-out pH electrode, the immersion depth can be up to 80 mm.

• Rinse the pH electrode with destilled or deionised water (also before and after every use/measuring)

and rub it dry. Dip the pH electrode into the 7.00 pH buffer/calibration solution, included in delivery,
stir it briefly and wait until the display has stabilised (up to 5 minutes).

• Now set the display value to "7.00” by turning the calibration trimmer (CAL) on the side of the PHT-

01 ATC with the screwdriver included in delivery.

• Clean the pH electrode again with distilled or deionised water and wipe it dry.
• Dip the pH electrode into the liquid to be measured and stir it briefly. After stabilization of the display

the pH level of the liquid can be read straight away. The automatic temperature compensation (ATC)
always ensures precise measurements even in the case of variable temperatures of the liquid.

• In order to ensure the function of this device over a long period of time, the pH electrode needs to be

cleaned after each measurement (see maintenance and cleaning).

Notes on calibration!
It is not necessary to calibrate the PHT-01 ATC before each measurement. It is
recommended to carry out a calibration after every tenth measement or every two
weeks. If the 7.00 pH calibration solution included in delivery is used up, it can be
bought again.
Notes on pH electrode!
The pH electrode always needs to be kept damp in order to be able to supply precise
measurement result over a long period of time. This is why the round protective cap
always needs to be put on the pH electrode. Put a little bit of the soaking solution into
the protective cap and put it back onto the pH electrode. If the soaking solution is used
up, a new one can be bought.
The pH electrode is a wearing part. Worn out electrodes are not covered by the
guarantee.

For cleaning (rinsing) of the sensor head, use only destilled or deionised water and paper towels, to
dab off. Do not use any cleaning agents which contain carbon or petrol, alcohol or the like to clean the
product. This can harm the surface of the measuring device. The fumes are furthermore a health
hazard and explosive. Sharp-edged tools, screwdrivers or metal brushes should not be used for
cleaning.

Please dispose of the defective device which can no longer be used in accordance with the current
legal regulations.

PH measuring range ................. 0.00 to 14.00 pH
Resolution ................................. 0.01 pH
Accuracy .................................... ± 0.01 pH at 25°C
Ambient temperature ................ 0 to +50°C
Working temperature ................ 0 to max. +50° C (ATC)
Power supply ............................ 9V block battery
Battery life ................................. approx. 350 hours. (alkaline)
Dimensions ............................... 158 x 40 x 34 mm
Weight ....................................... 85 g

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These operating instructions are a publication by Voltcraft®, Lindenweg 15, D-92242 Hirschau/Germany, Phone +49 180/586 582 7
(www.voltcraft.de).
All rights including translation reserved. Reproduction by any method, e.g. photocopy, microfilming, or the capture in electronic data
processing systems require the prior written approval by the editor. Reprinting, also in part, is prohibited.
These operating instructions represent the technical status at the time of printing. Changes in technology and equipment reserved.
© Copyright 2009 by Voltcraft®.