VWR PH20 User manual

EN
PH20
pH Tester
Operating manual
European catalogue number:
EU connection: 662-2283
Version: 1.0
Issued: 07.01.2019

Table of contents
2 / 33 B-H86.0.11.DB201-1.0
Table of contents
1 Legal address of the manufacturer................................................................................................... 4
2 About this documentation ................................................................................................................. 5
2.1 Foreword............................................................................................................................................... 5
2.2 Purpose of the document...................................................................................................................... 5
2.3 Warranty ............................................................................................................................................... 5
2.4 Compliance with local laws and other legal regulations ....................................................................... 5
2.5 Correctness of content.......................................................................................................................... 6
2.6 Layout of this document........................................................................................................................ 6
2.7 Further information ............................................................................................................................... 6
3 Safety ................................................................................................................................................... 8
3.1 Explanation of safety symbols .............................................................................................................. 8
3.2 Foreseeable misuse ............................................................................................................................. 8
3.3 Safety instructions ................................................................................................................................ 9
3.4 Intended use ....................................................................................................................................... 10
3.5 Qualified personnel............................................................................................................................. 10
4 Description ........................................................................................................................................ 11
4.1 Scope of delivery ................................................................................................................................ 11
4.2 Job description.................................................................................................................................... 11
5 The product at a glance ................................................................................................................... 12
5.1 The PH20............................................................................................................................................ 12
5.2 Display elements ................................................................................................................................ 12
5.3 Operating elements ............................................................................................................................ 12
5.4 Connections........................................................................................................................................ 13
6 Bases for measurement ................................................................................................................... 14
6.1 pH measurement ................................................................................................................................ 14
6.1.1 Explanation ......................................................................................................................................... 14
6.1.2 pH electrode ....................................................................................................................................... 14
6.1.3 Design................................................................................................................................................. 14
6.1.4 Further information ............................................................................................................................. 15
6.1.5 Choosing a pH electrode .................................................................................................................... 15
6.1.6 Care and maintenance ....................................................................................................................... 15
7 Maintenance ...................................................................................................................................... 17
7.1 Operating and maintenance notices ................................................................................................... 17
7.2 Battery ................................................................................................................................................ 17
7.2.1 Battery indicator.................................................................................................................................. 17
7.2.2 Changing battery ................................................................................................................................ 18
7.3 Calibration and adjustment ................................................................................................................. 19
7.3.1 pH calibration...................................................................................................................................... 19
8 Operation........................................................................................................................................... 23
8.1 Commissioning ................................................................................................................................... 23
8.1.1 Explanation ......................................................................................................................................... 23
8.2 Configuration ...................................................................................................................................... 23
8.2.1 Explanation ......................................................................................................................................... 23
8.2.2 Opening the configuration menu......................................................................................................... 23

Table of contents
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8.2.3 Configuring parameters of the configuration menu............................................................................. 24
8.2.4 Adjustment of the measuring input ..................................................................................................... 25
9 Error and system messages............................................................................................................ 27
10 Disposal............................................................................................................................................. 29
11 Technical data................................................................................................................................... 30
12 Service ............................................................................................................................................... 31
12.1 Online resources................................................................................................................................. 31
12.2 Sales partners..................................................................................................................................... 32

1 | Legal address of the manufacturer PH20
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1 Legal address of the manufacturer
VWR International bvba
Researchpark Haasrode 2020
Geldenaaksebaan 464
B-3001 Leuven
Phone: + 32 16 385011
http://be.vwr.com

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2 About this documentation
2.1 Foreword
Read this document carefully and familiarise yourself with the operation of the product
before you use it. Keep this document ready to hand and in the immediate vicinity of
the product so that it is available to the personnel/user for reference at all times in
case of doubt.
The product was developed according to the state of the art and fulfils the require-
ments of the applicable European and national Directives. All corresponding docu-
ments are available from the manufacturer.
Only technically qualified persons are permitted to carry out commissioning, operation,
maintenance and decommissioning. The qualified personnel must have carefully read
and understood the operating manual before beginning any work.
2.2 Purpose of the document
– This document describes the operation and maintenance of the product.
– Provides important information for working safely and efficiently with the product.
– In addition to the quick reference guide with all relevant legal and safety content in
hard copy, this document is a detailed reference option for the product.
2.3 Warranty
VWR guarantees that this product will remain free from material and production de-
fects for a period of two (2) years from the time of delivery. If there is a defect, VWR
shall decide on its own discretion whether to repair or replace the product free of
charge or to provide the customer with a refund of the purchase price of the product,
insofar as it is sent back during the warranty period. This warranty shall be voided if
the product was damaged accidentally or intentionally due to improper use or normal
wear. Insofar as the necessary maintenance tasks and inspections are not carried out
in accordance with the operating manual and the local requirements, the warranty
shall be voided, unless this omission is not causal for the defects of the product.
The customer must insure returned articles against damage and loss. This warranty is
limited to the aforementioned rights. IT IS EXPRESSLY AGREED THAT THIS WAR-
RANTY APPLIES INSTEAD OF ANY WARRANTY OF FITNESS AND INSTEAD OF
WARRANTY OF GENERAL MERCHANTABILITY.
2.4 Compliance with local laws and other legal
regulations
The customer is responsible for obtaining the necessary official approvals and other
authorisations that are necessary for operation and use of the purchased product in its
place of use. VWR can only be held liable if the customer fails to carry out the neces-
sary activities for this purpose or authorisations are not issued unless a corresponding
rejection is based on a defect of the product.

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2.5 Correctness of content
The contents of this document were checked for corrected and are subject to a con-
tinuous correction and updating process. This does not rule out potential errors. In the
event that errors are discovered or in case of suggestions for improvement, please in-
form us immediately via the indicated contact information in order to help us make this
document even more user-friendly.
2.6 Layout of this document
Description
Each chapter is explained at the beginning in the description.
Prerequisite
All mandatory prerequisites are then listed for each step.
Instruction
Tasks to be carried out by the personnel / user are represented as numbered instruc-
tions. Adhere to the sequence of the specified instructions.
Representation
Shows an illustrative instruction or a configuration of the product.
Formula
Some instructions include a formula for a general understanding of a configuration,
programming or a setting of the product.
Outcome of an action
Result, consequence or effect of an instruction.
Emphases
In order to simplify legibility and provide a clearer overview, various sections / informa-
tion are emphasised.
–1234 Display elements
–Mechanical controls
–Product functions
–Product labels
–Cross-reference [}p.6]
–Foot notes
2.7 Further information
Software version of the product:
– V1.2 or later
For the exact product name, refer to the type plate on the rear side of the product.

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NOTE
For information about the software version, press and hold the ON button to switch on
the product for longer than 5 seconds. The series is shown in the main display and the
software version of the product is shown in the secondary display.

3 | Safety PH20
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3 Safety
3.1 Explanation of safety symbols
DANGER
This symbol warns of imminent danger which can result in death, severe bodily injury,
or severe property damage in case of non-observance.
DANGER
This symbol indicates danger for living tissue as well as a variety of materials, which
can be damaged or destroyed when coming into contact with this chemical. Caustic
effect, protective equipment required!
DANGER
This symbol indicates danger for all life forms, which can result in death or acute or
chromic damage to the health after inhaling, swallowing or absorbing this chemical
through the skin.
CAUTION
This symbol warns of potential dangers or harmful situations which can cause damage
to the device or to the environment in case of non-observance.
NOTE
This symbol indicates processes which can have a direct influence on operation or
can trigger an unforeseen reaction in case of non-observance.
NOTE
This symbol instructs the use of eye protection which protects the eyes from harmful
influences when working with powerful light, UV radiation, laser, chemicals, dust,
splinters or weather influences.
NOTE
This symbol instructs the use of protective gloves which offer protection from mechan-
ical, thermal, chemical, biological or electrical hazards.
3.2 Foreseeable misuse
The fault-free function and operational safety of the product can only be guaranteed if
generally applicable safety precautions and the device-specific safety instructions for
this document are observed.
If these notices are disregarded, personal injury or death, as well as property damage
can occur.

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DANGER
Incorrect area of application!
In order to prevent erratic behaviour of the product, personal injury or property dam-
age, the product must be used exclusively as described in the chapter Description
[}p.11] in the operating manual.
– Do not use in safety / Emergency Stop devices!
– The product is not suitable for use in explosion-prone areas!
– The product must not be used for diagnostic or other medical purposes on pa-
tients!
– The product is not intended to come into direct contact with food. For measure-
ment in foods, samples must be taken and discarded after the measurement!
3.3 Safety instructions
This product has been designed and tested according to the safety requirements for
electronic measuring devices.
DANGER
Danger of breaking the electrodes!
All electrodes contain glass parts that can cause injuries when broken. There is an el-
evated risk of injury in connection with measurements in foods.
– Inspect the electrode before and after the measurement!
– Always measures in samples for measurements in foods. Discard these samples
after the measurement!
DANGER
Potassium chloride / potassium nitrate!
The electrode contains potassium chloride or potassium nitrate. All contact with the
skin, clothing and eyes should be avoided. Nevertheless, should contact occur, take
the following measures
– Eyes: Flush with flowing water for at least 15 minutes, seek medical attention!
– Skin: Wash with large amounts of water for several minutes!
– Clothing: Wash immediately!
– If swallowed: Drink large amounts of water, do not induce vomiting and seek med-
ical attention!
CAUTION
Erratic behaviour!
On suspicion that the product can no longer be operated without danger, it must be
decommissioned and prevented from recommissioning with appropriate labelling. The
safety of the user can be impaired by the device if, for example, if it shows visible
damage, it no longer works as specified or if it was stored for an extended period of
time under unsuitable conditions.
– Visual inspection!
– In case of doubt, send the product to the manufacturer for repair or maintenance!

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NOTE
If the product is stored at a temperature above 50 °C, or is not used for an extended
period of time, the batteries must be removed. Leaks from the batteries are avoided as
a result.
NOTE
This product does not belong in children's hands!
For this purpose, also refer to
2Technical data [}30]
3.4 Intended use
The product is designed for measuring the pH value in water and aqueous media by
means of suitable electrodes.
Application examples for this are, for example, drinking water, waste water, surface
water, swimming pools, fish breeding and process chemistry.
See Technical data [}p.30].
3.5 Qualified personnel
For commissioning, operation and maintenance, the relevant personnel must have ad-
equate knowledge of the measuring process and use of the measurements, for which
purpose this document makes a valuable contribution. The instructions in this docu-
ment must be understood, observed and followed.
In order to ensure that no risks arise from the interpretation of the measurements in
the concrete application, the user must have additional technical knowledge, because
the user is liable in case of damage/danger due to misinterpretation as a result of in-
adequate technical knowledge.