palintest PT155 User manual

Before You Begin
Your instrument has been factory calibrated and usually works well out of the box. However,
after extended periods of non-use, it’s best to soak the sensor in electrode storage solution,
or pH buffer for 10 minutes or so.A brief rinse with deionised (DI) water is OK, but avoid
soaking or storing in deionised water as this will shorten the pH electrode life. Prior to taking
measurements, periodic calibration with certified standards is recommended for best accuracy.
pH Buffer Set Selection
Your sensor features USA (pH 4.01, pH 7.00 and pH 10.01) or NIST (pH 4.01, pH 6.86,
and pH 9.18) standards. Select either one to suit your requirements.
1W
hile pressing the HOLD/ENT button, switch on the sensor by pressing the ON/OFF button.
2Release the HOLD/ENT button. The display will flash either USA or NIST.
3Press CAL button to toggle between the two buffer set standards.
4Press the HOLD/ENT button to confirm the selection of the buffer set.
pH Measurement
1Press the ON/OFF button to switch the sensor on.
2Dip the electrode about 2 to 3cm into the test solution. Stir and let the reading
stabilise. CAUTION: Testing dry samples is not accurate and can lead to sensor
damage or breakage. Soils must be wet and free of particulates that may scratch
the glass sensor. Excessive force into dry samples can cause glass breakage.
3Note the pH value or press HOLD/ENT button to freeze the reading.
To release the reading, press HOLD/ENT again.
4Press ON/OFF to turn off the sensor. If you do not press a button for 8.5 minutes,
the sensor will automatically shut off to conserve battery life.
HOLD Function
This feature lets you freeze the display for a delayed observation.
1Press HOLD/ENT button to freeze the measurement. A ‘HOLD’ indicator
will be displayed and the measurement will be frozen.
2Press HOLD/ENT again to release the measurement. The ‘HOLD’ indicator
will not be displayed anymore indicating the held measurement is released.
User Reset
You can reset the pH calibration to the factory default by using the user reset
function. Buffer set selection and temperature user calibration are not affected
by the user reset function.
1Switch off the sensor.
2While pressing the ‘CAL’ button, press and release the ON/OFF button to enter
the ‘User Reset’ selection menu. The screen will display ‘rSt’ on the bottom
display with a flashing ‘nO’ selection.
3Use the ‘CAL’ button to toggle between ‘nO’ and ‘YES’ selection.
• nO deactivates reset selection
• YES activates the reset selection
4Press the HOLD/ENT button to confirm the selection made.
5If you have selected ‘YES’, the unit will show ‘CO’ momentarily and proceed to
the measurement mode with the calibration reset back to factory default value.
6If ‘nO’ is selected, the unit will proceed to the measurement mode without any
calibration reset performed.
ATC - Automatic Temperature Compensation
Through its in-built temperature sensor, the measurement error from changes in
electrode sensitivity due to changes in temperature is compensated to give the
actual pH reading of the sample measured.
Notes: To exit this program without confirming the calibration,
press the CAL button before the automatic confirmation takes place.
pH Calibration
Calibration should be done regularly, preferably once a week.You can calibrate
up to three points using either the USA or the NIST buffer set standards.
1Press ON/OFF button to switch unit on.
2Dip electrode about 2 to 3 cm into the pH standard buffer solution.
3Press the CAL button to enter calibration mode. The ‘CAL’ indicator will be
shown. The upper display will show the measured reading based on the last
calibration while the lower display will indicate the pH standard buffer solution.
Note: To abort calibration, press the ‘CAL’ button.
4Allow about 2 minutes for the sensor reading to stabilise before pressing the
HOLD/ENT button to confirm the first calibration point. The upper display will
be calibrated to the pH standard buffer solution and the lower display will then
search for the next pH standard buffer solution.
5Repeat with other buffers if necessary. Rinse electrode before dipping into next buffer.
Note: The calibration mode allows you to perform up to three calibration points
before returning to the measurement mode automatically. However, if you opted
to have only one or two calibration points, simply skip the remaining calibration
points by exiting to the measurement mode by pressing the CAL button.
Figure 1: Buffer Selection Sequence
Figure 2: Example of pH Calibration Sequence
Figure 3: Example of HOLD Function
With meter powered
off, press HOLD/ENT
and ON/OFF at the
same time. First
release ON/OFF
button, then
HOLD/ENT button.
After buffer
selection, whole
LCD segment lits
up and goes back
to measurement
mode.
To do a 1 point calibration only,
press CAL button at this point to
exit to the measurement mode.
Otherwise, proceed to second
buffer for a second buffer for
a second point calibration.
To do a 2 point calibration only, press
CAL button at this point to exit to
the measurement mode. Otherwise,
proceed to third buffer for a third
buffer for a third point calibration.
After the third point calibration, the
meter will automatically return to the
measurement mode.At any point, an
error message ‘Er. 1’ will be displayed
momentarily if the confirmed pH value
is not within the pH calibration window.
pH Pocket Meter
Large Screen Waterproof pH/Temperature Tester Double Junction
Instruction Manual
Figure 4: User Reset Sequence
With meter powered
off, press CAL and
ON/OFF at the same
time. First release
ON/OFF button,
then CAL button.
After reset, whole
LCD segment lits up
and goes back to
measurement mode.
Temperature Calibration
From the measurement mode,
1Press the HOLD/ENT button to bring the sensor into the ‘HOLD’ mode.
2Press the CAL button for 3 seconds to switch to the °C or °F mode setting selection
screen. Pressing the CAL button continuously for 3 seconds allows you to toggle in
between the °C and °F mode setting selection screen.
3Release the CAL button to confirm your mode selection and the display will go to the
temperature calibration mode with the upper display flashing.The upper display shows the
current measured temperature reading based on the last set offset and the lower display
shows the current measured temperature reading based on factory default calibration.
4Dip the sensor into a solution of known temperature and allow time for the in built
temperature sensor to stabilise.
5
Press the HOLD/ENT button to set the upper display to the temperature value of the solution.
6Once the new temperature setting is reached, the new value is automatically confirmed
and returns to the measurement mode if no button is pressed after 5 seconds.
Notes: To exit this program without confirming the calibration,
press the CAL button before the automatic confirmation takes place.
Palintest
®
PocketMeterpH_ZI INST 155 10/7/15 11:14 Page 1

Ribbed Collar
Rotate collar
away from you
Customer support:
V1-06/15
ZI INST 155
Large O-Ring
Small O-Ring Small Tab Large Tab
Electrode Module
A HALMA COMPANY
Palintest Ltd
Palintest House, Kingsway, Team Valley,
Gateshead, NE11 0NS
Tel: [phone]
Fax: [phone]
[email protected] (UK)
[email protected] (International)
Palintest Australia and Asia Pacific
1/53 Lorraine Street,
Peakhurst Business Centre,
Peakhurst, NSW 2210, Australia
Tel: [phone]
Fax: [phone]
[email protected]
Palintest USA
1455 Jamike Avenue (Suite 100),
Erlanger, Kentucky, 41018, USA
Tel: [phone]
Toll Free: 800 835 9629
Fax: [phone]
[email protected]
www.palintest.com
Palintest China
Room 1711, Fanli Mansion,
22 Chaowai Street, Chaoyang District,
Beijing, 100020, PRC
Tel: [phone]
Fax: [phone]
[email protected]
Palintest Middle East
PO Box 27709, Engomi 2432,
Nicosia, Cyprus
Tel: [phone]
Fax: [phone]
[email protected]
3 Bars indicates battery is full (100%)
2 Bars indicates 50% of the battery life is left
1 Bar indicates 25% of the battery life is left
Blinking battery casing indicates the need to replace
batteries with fresh ones as specified by manufacturer
Electrode is not in contact with
solution or electrode is failing
Replacement sensor is not connected properly
to the meter during sensor replacement
Measured pH value or temperature value exceeds
its specified maximum or minimum value
Or/Ur
(Still)
ATC/Or/Ur
(Blinking)
Temperature calibration error of attempting to calibrate
Testr to a value which is out of range or under range
Blinking ‘ATC’, ‘Or’ or ‘Ur’ indicates that there is a
short or open circuit at the built in temperature sensor
Er.0
pH calibration error of attempting to confirm a calibration
value which is not within the specified calibration window
Er.1
Low Battery
indicator
Over Range /
Under Range
Signal
Error
Message
Self-Diagnostic Messages
pH Range -1.00 to 15.00 pH
Resolution 0.01 pH
Relative Accuracy
Calibration Points
0.01 pH
Up to 3 points
Buffer Set Standard Selection USA - 4.01/7.00/10.01 NIST - 4.01/6.86/9.18
Calibration Window (USA Buffer Set Standard) ±1.00 pH (pH 4.01 & pH 10.01), ±1.50 pH (pH 7.00)
Calibration Window (NIST Buffer Set Standard) ±1.00 pH (pH 4.01 & pH 9.18), ±1.25 pH (pH 6.86)
Temperature
Temperature Compensation
0-50.0°C or 32.0-122.0°F
Automatic
Temperature Resolution 0.1°C/°F
Temperature Accuracy 0.5°C/0.9°F
Auto Off After 8.5 minutes from last key press
User Reset Yes
Non Volatile Memory Backup
LCD Display
Power Requirement
Battery Life
Operating Temperature
Testr Dimensions
Weight
Yes
Dual
4 x 1.5V “A 76” micro alkaline batteries
More than 500 hrs
0 - 50°C
6.5 “L x 1.5”dia. (165 x 38 mm)
3.25oz (90gm)
Temperature Calibration Window ±(5°C/9°F) from default value
pH Sensor SpecificationsElectrode Maintenance
1Before measuring soil pH, wet your soil sample with distilled water and ensure that
the soil is free of particulates. Even though the sensor is robust, hard surfaces such
as stones and pebbles can still cause breakage.
2Rinse the electrode with electrode storage solution after each measurement.
Care has to be taken not to damage the sensor’s glass electrode especially while
rinsing the sensor.
3In aggressive chemicals, dirty or viscous solutions, and solutions with heavy metals
or proteins, take readings quickly and rinse electrode immediately afterward. For the
sensor, the remnants of the semi solid samples on the penetrating electrode can be
removed by rubbing it with some table salt and then rinsing. Mild detergent can be
used to wash the penetrating electrode clean.
4If possible, keep a small piece of paper or sponge in the electrode cap - moistened
with clean water or electrode storage solution (NOT de-ionised water) - and close
the cap over the electrode.
1
With dry hands, grip the ribbed instrument collar with electrode facing you. Twist the collar
counter clockwise (see figure 6). Save the ribbed Testr collar and O-ring for later use.
2Pull the old electrode module away from the instrument.
3Align the four tabs on the new module so that they match the four slots on the
instrument (see figure 7).
4Gently push the module onto the slots to sit it in position. Push the smaller O-ring
fully onto the new electrode module. Push the collar over the module and thread
it into place by firmly twisting clockwise.
Note: It is necessary that you recalibrate your sensor prior to measurement
after an electrode replacement.
Electrode Replacement
You can replace the electrode module at the fraction of the cost of a new instrument.
When the sensor fails to calibrate or gives fluctuating readings in calibration standards,
you need to change the electrode.
Applications
Water quality testing • pools • spas • aquariums • aquaculture • hydroponics
• ecology studies • water and wastewater treatment • boilers • steam generators
• car washes • sanitation plants • labs • food sectors and more!
Warranty
Your waterproof instrument is warranted to be free from manufacturing defects for
1 year and electrode module for 6 months. If repair, adjustment or replacement is
necessary and has not been the result of abuse or misuse within the time period
specified, please contact your local distributor for assistance.
Return of Items
Authorisation must be obtained from your distributor before returning items for
any reason. When applying for authorisation, please include information regarding
the reason the item(s) are to be returned.
Note: We reserve the right to make improvements in design, construction
and appearance of products without notice. Prices are subject to change
without notice.
Changing Batteries
1Open battery compartment lid
(with attached lanyard loop).
2Remove old batteries; replace
with fresh ones. Note polarity.
Insert Electrode Module
Figure 6:
Removal of collar from tester
Figure 7:
Example of electrode module fitting alignment
Instrument Part Code
Replacement Sensor PT 155 / 1
pH Pocket Sensor Complete PT 155
Replacement Parts
Figure 5
Palintest
®
PocketMeterpH_ZI INST 155 10/7/15 11:14 Page 4