Temperature Calibration; Self-Diagnostic Messages; Changing Batteries; Electrode Replacement - Oakton pHTestr 30 Operating Instructions

Temperature Calibration

From the measurement mode,
1. Press the HOLD/ENT button to bring the unit to the 'HOLD' mode.
2. Press 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.
3. Release 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.
4. Dip the unit into a solution of known temperature and allow time for the
built-in temperature sensor to stabilize.
5. Press the HOLD/ENT button to set the upper display to the temperature
value of the solution.
6. Once 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.
Note: To exit this program without confirming the calibration, press the
CAL button before the automatic confirmation takes place.
Continuous pressing of CAL button (about 3 seconds) to
toggle between temperature setting of degrees Celsius
and Farenheit
When the
temperature offset
During calibration, upper display will
value is reached,
flash. Press HOLD/ENT to increase offset
the new value
up to +5 °C (+9 °F) from default value. It
is automatically
will roll over to -5 °C (-9 °F) from default
confirmed if no key
value and start increasing again.
is pressed for 5
seconds.
Figure 6: Temperature Calibration Sequence
Electrode Maintenance
1. Rinse the electrode with electrode storage solution after each measurement.
Care has to be taken not to damage the sensor's glass electrode.
2. In aggressive chemicals, dirty or viscous solutions, and solutions with heavy
metals or proteins, take readings quickly and rinse electrode immediately
afterward. Mild detergent can be used to wash the electrode clean.
3. If possible, keep a small piece of paper or sponge in the electrode cap—
moistened with clean water or electrode storage solution (NOT de-ionized
water)—and close the cap over the electrode.
1065O100_MAN_35634-30.indd 2

Self-Diagnostic Messages

3 Bars indicates battery is full (100%)
2 Bars indicates 50% of the battery life is left
Low Battery
Indicator 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
Or / Ur
Over Range/
unit during sensor replacement
(Still)
Under Range
Measured pH value or temperature value exceeds its
Signal
specified maximum or minimum value
ATC / Or / Ur Blinking 'ATC', 'Or' or 'Ur' indicates that there is a short
(Blinking) or open circuit at the built in temperature sensor
Temperature calibration error of attempting to calibrate
Er.0
unit to a value which is out of range or under range
Error
pH calibration error of attempting to confirm a
Message
Er.1 calibration value which is not within the specified
calibration window

Changing Batteries

1. Open battery compartment lid (with attached lanyard loop).
2. Remove old batteries; replace with fresh ones. Note polarity.

Electrode Replacement

Release CAL
button to
You can replace the electrode module at the fraction of the cost of a new tester.
start entering
When the tester fails to calibrate or gives fluctuating readings in calibration
the new
standards, you need to change the electrode.
temperature
1. With dry hands, grip the ribbed collar with electrode facing you. Twist the
collar counterclockwise (see picture A). Save the ribbed collar and O-ring
for later use.
2. Pull the old electrode module away from the unit.
3. Align the four tabs on the new module so that they match the four slots on
the unit (see picture B).
4. Gently 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 the tester prior to measurement after
an electrode replacement.
Rotate collar away from you
Rlbbed collar
Figure 7: Removal of collar
from tester
Warranty
The waterproof pHTestr is warranted to be free from manufacturing defects for
1 year and electrode module for 6 months, unless otherwise specified. 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
Authorization must be obtained from your distributor before returning items
for any reason. When applying for authorization, 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.
Accessories
Item
pHTestr 30 pocket tester
Replacement sensor for pHTestr 30
Replacement button cell batteries, 1.5 V. Pack of 6
NIST-traceable calibration with data for pH pocket testers
Specifications
Description
pH range
Resolution
Relative accuracy
Calibration points
Buffer set standard selection
Calibration window
(USA buffer set standard)
Calibration window
(NIST buffer set standard)
Temperature
Temperature compensation
Temperature resolution
Temperature accuracy
Temperature
calibration window
Auto off
User reset
Nonvolatile memory backup
LCD
Power requirement
Battery life
Operating temperature
Dimensions
Weight
Large
Insert Electrode Module
O-ring
Electrode Module
Small O-ring
Small Tab Large Tab
Figure 8: Example of electrode
module fitting alignment
1065O100_MAN_35634-30
Order Code
35634-30
35624-38
09377-16
17101-45
pHTestr 30
–1.00 to 15.00 pH
0.01 pH
±0.01 pH
Up to 3 points
USA: 4.01/7.00/10.01
NIST: 4.01/6.86/9.18
±1.00 pH (pH 4.01 & pH 10.01),
±1.50 pH (pH 7.00)
±1.00 pH (pH 4.01 & pH 9.18),
±1.25 pH (pH 6.86)
0 to 50.0°C / 32.0 to 122.0°F
ATC
0.1°C / 0.1°F
0.5°C / 0.9°F
±(5°C / 9°F) from default value
After 8.5 minutes from last key press
Yes
Yes
Dual
4 x 1.5 V "A 76" micro alkaline batteries
More than 500 hrs
0 to 50°C / 32 to 122°F
6.5"L x 1.5"dia. (165 x 38 mm)
3.25 oz (90 gm)
www.4oakton.com
August, 2017
8/25/2017 7:15:08 AM