PCE Health and Fitness PH 26F User manual

© PCE Instruments
PCE-PH 26F / PCE-PH 28L pH Meter
User Manual
User manuals in various languages (français,
italiano, español, português, nederlands, türk, polski,
русский, 中文) can be found by using our
product search on: www.pce-instruments.com
Last change: 19 August 2021
v1.0
English

© PCE Instruments
Contents
1Safety notes........................................................................................... 1
2Specifications........................................................................................2
3Delivery scope.......................................................................................3
3.1 PCE-PH 26F.................................................................................................................... 3
3.2 PCE-PH 28L .................................................................................................................... 3
4System description...............................................................................3
4.1 Display............................................................................................................................. 3
4.2 Keys................................................................................................................................. 4
5Measurement preparation.................................................................... 4
5.1 Insert batteries ................................................................................................................. 4
5.2 Preparation of the buffer solution...................................................................................... 4
5.3 Electrode control.............................................................................................................. 4
5.4 Switch meter on / off......................................................................................................... 5
5.5 Basic settings................................................................................................................... 5
6pH calibration ........................................................................................ 6
6.1 1-point calibration............................................................................................................. 7
6.2 2-point calibration............................................................................................................. 8
6.3 3-point calibration............................................................................................................. 9
7Temperature calibration.....................................................................10
8pH measurement.................................................................................11
9Care and maintenance of the electrodes.......................................... 11
10 Troubleshooting..................................................................................11
11 Warranty...............................................................................................12
12 Disposal ...............................................................................................12

© PCE Instruments
1
1 Safety notes
Please read this manual carefully and completely before you use the device for the first time. The
device may only be used by qualified personnel and repaired by PCE Instruments personnel.
Damage or injuries caused by non-observance of the manual are excluded from our liability and
not covered by our warranty.
•The device must only be used as described inthis instruction manual. If used otherwise,
this can cause dangerous situations for the user and damage to the meter.
•The instrument may only be used if the environmental conditions (temperature, relative
humidity, …) are within the ranges stated in the technical specifications. Do not expose
the device to extreme temperatures, direct sunlight, extreme humidity or moisture.
•Do not expose the device to shocks or strong vibrations.
•The case should only be opened by qualified PCE Instruments personnel.
•Never use the instrument when your hands are wet.
•You must not make any technical changes to the device.
•The appliance should only be cleaned with a damp cloth. Use only pH-neutral cleaner,
no abrasives or solvents.
•The device must only be used with accessories from PCE Instruments or equivalent.
•Before each use, inspect the case for visible damage. If any damage is visible, do not
use the device.
•Do not use the instrument in explosive atmospheres.
•The measurement range as stated in the specifications must not be exceeded under
any circumstances.
•Non-observance of the safety notes can cause damage to the device and injuries to
the user.
We do not assume liability for printing errors or any other mistakes in this manual.
We expressly point to our general guarantee terms which can be found in our general terms of
business.
If you have any questions please contact PCE Instruments. The contact details can be found at
the end of this manual.

© PCE Instruments
2
2 Specifications
pH measurement
Measurement range
-1.00 ... 15.00 pH
Accuracy
±0.01 pH
Resolution
0.01 pH
Calibration points
1, 2 or 3
Buffer solutions
USA (pH 4.01 / 7.00 / 10.01) and
NIST (pH 4.01 / 6.86 / 9.18)
Automatic recognition of the buffer solution
yes
Temperature measurement
Measurement range
0 … 60 °C / 32 ... 140°F
Accuracy
±1 °C
Resolution
1 °C
Calibration points
1
General specifications
Temperature compensation
0 … 60 °C / 32 ... 140°F
Temperature of medium
0 … 60 °C / 32 ... 140°F
Environmental conditions
0 ... 60 °C / 32 ... 140°F; <80 % RH
Batteries
2 x 1.5 V AAA
Weight
100 g / <1 lb
Total dimensions
PCE-PH 26F
185 mm x Ø 40 mm / 7.3 x 1.6 in
PCE-PH 28L
240 mm x Ø 40 mm / 9.44 x 1.6 in
Electrode dimensions
PCE-PH 26F
40 mm x Ø 26 mm / 1.6 in x Ø 1.02 in
PCE-PH 28L
75 mm x Ø 14 mm / 2.95 in x Ø 0.55 in

© PCE Instruments
3
3 Delivery scope
3.1 PCE-PH 26F
1 x pH meter PCE-PH 26F
1 x buffer 4.01 pH powder for 250 ml solution
1 x buffer 7.00 pH powder for 250 ml solution
1 x buffer 10.01 pH powder for 250 ml solution
2 x batteries 1.5 V AAA
1 x storage box
1 x user manual
3.2 PCE-PH 28L
1 x pH meter PCE-PH 28L
1 x buffer 4.01 pH powder for 250 ml solution
1 x buffer 7.00 pH powder for 250 ml solution
1 x buffer 10.01 pH powder for 250 ml solution
3 x container for calibration solution
2 x batteries 1.5 V AAA
1 x carrying case
1 x user manual
4 System description
4.1 Display
Icon
Description
MEAS
Measuring mode
CAL
Calibration mode
SETUP
Setup mode
HOLD
Measured value is stable
ATC
Automatic temperature compensation enabled
Battery full (the icon disappears when the battery is flat)

© PCE Instruments
4
4.2 Keys
Key
Function
MEAS / Hold
- Switches the meter ON/OFF
- Freezes the reading. Press the key again to continue
measurement.
- Ends the calibration or adjustment and returns to measuring
mode
CAL
- Press the key to start the calibration.
- Press and hold the key to open the setup menu.
- In setting mode, press the key to select the default option.
Enter
Confirms the entries
5 Measurement preparation
5.1 Insert batteries
1 2 3
1. Unscrew the union nut of the electrode and pull the electrode off the measuring device,
observing correct axial alignment.
2. Insert two AAA batteries into the battery compartment. Observe correct polarity.
3. Align the guide groove with the electrode and carefully push the electrode into the
meter. Screw the union nut of the electrode tight.
5.2 Preparation of the buffer solution
Prepare 3 sealable containers with at least 250 ml content. Open the bags with the buffer powder
and put the contents of one bag into each container. Fill each container with 250 ml of distilled
water and stir the liquid until the powder has completely dissolved.
5.3 Electrode control
Remove the protective cap from the electrode and check for damage.
Damaged electrodes must be replaced.
Rinse off any salt crystals that may have settled from the storage solution under running water.
The salt crystals develop naturally and are not a deficiency.
If the electrode has become dry, place it in a 3M KCL solution for at least 15 minutes. (storage
solution for pH electrodes).

© PCE Instruments
5
5.4 Switch meter on / off
To switch on the meter, press and hold the "MEAS" key until the display switches on.
Press and hold the "MEAS" key for 5 seconds to switch it off.
The auto-off function switches the unit off after 8 minutes without a key being pressed. The
function can be enabled or disabled in the basic settings.
5.5 Basic settings
Press and hold the "CAL" key for 3 seconds to call up the basic settings.
Press the "CAL" key to call up the possible options of the adjustable items.
Press the "ENTER" key to confirm the selection and jump to the next item.
After confirming all selected items, the meter returns to measuring mode.
By pressing the "MEAS" key, you can return directly to measuring mode.

© PCE Instruments
6
MENU
ITEM
DESCRIPTION
OPTIONS
FACTORY
SETTING
Selection of the calibration
points
USA
(pH4.01/7.00/10.01)
USA
NIST
(pH4.01/6.86/9.18)
Number of calibration points
1 point
2 points
2 points
3 points
Selection of the temperature
unit
Celsius
°C
Fahrenheit
Temperature calibration
---
---
Enables the hold function
when the measured value is
stable
On
Off
Off
The auto-off function switches
the unit off after 8 minutes
without any key being pressed
On
On
Off
Reset to factory settings
Yes
No
No
After resetting the meter to factory settings, calibration is mandatory.
6 pH calibration
The devices allow a calibration of up to 3 points. To achieve high measurement accuracy, we
recommend at least a 2-point calibration. The meter automatically recognises and calibrates to
the following standard buffer values.
USA standard buffer pH 4.01, 7.00, 10.01
NIST standard buffer pH 4.01, 6.86, 9.18
The 1-point calibration can only be performed with pH 7.00 or pH 6.86, otherwise the calibration
will not be accepted.
The meter must be calibrated before first use.
Regular calibration is recommended to ensure measurement accuracy. DO NOT reuse the pH
buffer solution aftercalibration as impurities in the solution will affect the calibration and eventually
the accuracy of the measurement.

© PCE Instruments
7
6.1 1-point calibration
6.1.1 The 1-point calibration must be selected in
the basic settings.
6.1.2 Rinse the electrode with distilled water.
Press the "CAL" key.
Depending on the setting, the display shows
"pH 7.00/CAL1" or "pH 6.86/CAL1".
6.1.3 Immerse the electrode in the pH 7.00 (or
pH 6.86) buffer solution with the end of the
electrode completely immersed in the calibration
solution. Gently stir the solution with the
electrode to obtain a homogeneous solution.
6.1.4 Press the "ENTER" key.
The meter starts the calibration.
6.1.5 After the measured value has stabilised,
the display shows "End".
The calibration is completed.

© PCE Instruments
8
6.2 2-point calibration
6.2.1 The 2-point calibration must be selected in
the basic settings.
6.2.2. Carry out the calibration of the first
calibration point as described under 6.1.2. …
6.1.4.
The display shows "CAL 2".
6.2.3 Rinse the electrode with distilled water.
Immerse the electrode in the pH 4.01 or pH
10.01 (pH 9.18) buffer solution with the end of
the electrode completely immersed in the
calibration solution. Carefully stir the solution
with the electrode to obtain a homogeneous
solution.
6.2.4 Press the "ENTER" key.
The meter automatically detects the selected
calibration liquid and starts the calibration.
6.2.5 After the measured value has stabilised,
the display shows the slope of the electrode in
% and then displays "End".
The 2-point calibration is completed.

© PCE Instruments
9
6.3 3-point calibration
6.3.1 The 3-point calibration must be selected in
the basic settings.
6.3.2. Carry out the calibration of the first
calibration point as described under 6.1.2. …
6.1.4.
The display shows "pH 4.01" and "CAL 2".
6.3.3 Rinse the electrode with distilled water
Immerse the electrode in the pH 4.01 buffer
solution with the end of the electrode completely
immersed in the calibration solution. Stir the
solution carefully with the electrode to obtain a
homogeneous solution.
6.4.4 Press the "ENTER" key.
The meter starts the calibration.
6.3.5 After the measured value has stabilised,
the display shows the slope of the electrode in
%, followed by "pH 10.01" (pH 9.18) and "Cal 3".
6.3.6 Rinse the electrode with distilled water
Immerse the electrode in the pH 10.01 (pH 9.18)
buffer solution with the end of the electrode
completely immersed in the calibration solution.
Gently stir the solution withthe electrode to create
a homogeneous solution.

© PCE Instruments
10
6.3.7. press the "ENTER" key.
The meter starts the calibration.
6.3.8 After the measured value has stabilised,
the display shows the slope of the electrode in %
and then displays "End".
The 3-point calibration is completed.
Press the "MEAS" key to return to measuring mode even during calibration.
7 Temperature calibration
When deviating temperature values are displayed, you can adjust them in the corresponding
menu item.
7.1. Press and hold the "CAL" key for 3 seconds
to call up the basic settings.
7.2. Press the "Enter" key repeatedly until the
display shows "°C" and "CAL" or "°F" and "CAL".
7.3 Press the "CAL" key.
7.4 Press the "CAL" key again until the
temperature display matches the actual
temperature.
7.5 Press the "ENTER" key to confirm your entry.
7.6 Press the "MEAS" key to return to measuring
mode.

© PCE Instruments
11
8 pH measurement
Check the electrode as described in chapter 5.3 and switch on the meter, see chapter 5.4.
Rinse the electrode with distilled water.
Immerse the electrode in the medium with the end of the electrode completely immersed in the
medium. Move the electrode slightly back and forth to make good contact with the measuring
medium.
Read the result after stabilisation.
With the automatic "Hold" function switched on, the measurement result remains on the display
after stabilisation. (see basic settings)
9 Care and maintenance of the electrodes
For best results, always keep the glass-sensitive membrane moist.
Make sure that the electrode is thoroughly rinsed with distilled or deionised water after use.
If you do not use the meter for a long period of time, store the electrode in the 3M KCL solution.
(Storage solution PCE-SSOxxx)
If the meter cannot be calibrated or shows fluctuating readings for calibration standards, you must
replace the electrode.
Remove and attach the electrode in the same way as described in chapter 5.1.
10 Troubleshooting
Display indication
Cause of error
Troubleshooting
Electrode too dry
Place the electrode in a 3M KCL solution
for at least 15 minutes. (Storage solution)
Overrange
Check whether the electrode is dirty or
the glass body is defective.
Wrong buffer solution
Use the correct buffer solution.
Electrode defective
Replace the electrode.

© PCE Instruments
12
11 Warranty
You can read our warranty terms in our General Business Terms which you can find here:
https://www.pce-instruments.com/english/terms.
12 Disposal
For the disposal of batteries in the EU, the 2006/66/EC directive of the European Parliament
applies. Due to the contained pollutants, batteries must not be disposed of as household waste.
They must be given to collection points designed for that purpose.
In order to comply with the EU directive 2012/19/EU we take our devices back. We either re-use
them or give them to a recycling company which disposes of the devices in line with law.
For countries outside the EU, batteries and devices should be disposed of in accordance with
your local waste regulations.
If you have any questions, please contact PCE Instruments.

© PCE Instruments
13
PCE Instruments contact information
Germany France Spain
PCE Deutschland GmbH PCE Instruments France EURL PCE Ibérica S.L.
Im Langel 4 23, rue de Strasbourg Calle Mayor, 53
D-59872 Meschede 67250 Soultz-Sous-Forets 02500 Tobarra (Albacete)
Deutschland France España
Tel.: [phone] Téléphone: [phone] Tel. : [phone]
Fax: [phone] Numéro de fax: [phone] Fax: [phone]
[email protected] [email protected] [email protected]
www.pce-instruments.com/deutsch www.pce-instruments.com/french www.pce-instruments.com/espanol
United Kingdom Italy Turkey
PCE Instruments UK Ltd PCE Italia s.r.l. PCE Teknik Cihazları Ltd.Şti.
Unit 11 Southpoint Business Park Via Pesciatina 878 / B-Interno 6 Halkalı Merkez Mah.
Ensign Way, Southampton 55010 Loc. Gragnano Pehlivan Sok. No.6/C
Hampshire Capannori (Lucca) 34303 Küçükçekmece - İstanbul
United Kingdom, SO31 4RF Italia Türkiye
Tel: [phone] Telefono: [phone] Tel: [phone]
Fax: [phone] Fax: [phone] Faks: 0212 705 53 93
[email protected] [e-mail] in[email protected]
www.pce-instruments.com/english www.pce-instruments.com/italiano www.pce-instruments.com/turkish
The Netherlands United States of America
PCE Brookhuis B.V. PCE Americas Inc.
Institutenweg 15 1201 Jupiter Park Drive, Suite 8
7521 PH Enschede Jupiter / Palm Beach
Nederland 33458 FL
Telefoon: [phone] USA
[email protected] Tel: [phone]
www.pce-instruments.com/dutch Fax: [phone]
[email protected]