Myron L PTBT2 - Manual (Page 4)

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1. Rinse the pen. If measuring from a container, submerge the pen and swirl it around
in FRESH sample solution 3 times. Alternatively, swirl for 30 seconds under
a stream or in a body of water.
2. If the Measurement screen is not displayed, tap the Measurement
button in the Feature Navigation Bar. The screen will say,
“Paired ULTRAPEN is Offline“.
3. Grasp the pen near the pen cap to avoid sample contamination.
4. Remove pen from the rinse solution.
5. Press and release the PTBT2’s push button to turn it ON.
6. When the LED flashes rapidly, IMMEDIATELY dip the pen in the sample solution so
that the cell is completely submerged. If you do not submerge the cell in solution
before the flashing slows, allow the pen to power off and retake the reading.
7. The App screen will display “Measuring ...”
8. When the LED flashes slowly, swirl the pen to remove bubbles, keeping the cell
submerged and preferably at least 1 inch (2½ cm) away from sides/bottom of
container.
a. In Hold mode when the LED turns on solid the display will show the final pH and
temperature readings.
b. In LIVE mode allow the pen to remain in solution while the LED flashes slowly.
The display will show live pH and temperature readings. The pen will time out
after 5 minute. Push and release the pen’s button to power it OFF at any
time during LIVE measurement
9. The ULTRAPEN will turn OFF once the measurement is completed.
V. Recording and Recalling Measurements
1. Once a measurement is finished, tap the MS button (Memory Store).
2. The App screen will display the measurement as an unsaved record.
3. Tap the Save button in the upper right corner of the record display.
4. The record will be saved and the App will return to the
Measurement screen.
5. Tap the MR button (Memory Recall) in the Feature Navigation Bar to
display a list of stored records.
6. Swipe up and down to reveal the full list. Tap any record on the list
to view it’s details.
VI. Calibration
The Myron L ® Company recommends calibrating twice a month depending on usage.
However, you should check the calibration whenever measurements are not as
expected. 3-point Wet Calibration is most accurate and is recommended.
NOTE: If the measurement is NOT within calibration limits, “Error. Clean sensor. Check
Solution.” will display. Check to make sure you are using a proper pH buffer solution. If
the solution is correct, clean the glass bulb of the sensor with a cotton swab soaked in
isopropyl alcohol. Restart calibration.
NOTE: Small bubbles trapped in the sensor may give a false calibration.
NOTE: If at any point during calibration, you do not submerge the sensor in solution
before the flashing slows, allow the pen to power off and start over.
A. Calibration Preparation
1. For maximum accuracy, fill 2 clean containers with each pH buffer you will be using.
Arrange them in such a way that you can clearly remember which is the rinse solution
and which is the calibration buffer. Always rinse the pH sensor between buffer
solutions.
2. Ensure the pH sensor is clean and free of debris.
NOTE: If you do not have enough buffer, you can use 1 container of each buffer for
calibration and 1 container of clean water for all rinsing.
B. Multi-Point Calibration (2 and 3 point Calibration).
To perform a multi-Point Calibration you must always start with 7.0 pH buffer.
1. Tap the CAL button in the Feature Navigation Bar.
The App screen will appear and say, “Paired ULTRAPEN is Offline” .
2. Grasp the pen near the battery to avoid sample contamination.
3. Remove pen from the rinse solution.
4. Press and release the pen’s push button. The Calibration screen will display, “Press
and hold the button on the ULTRAPEN to enter CAL mode.”
5. Press and Hold the pen’s button. The LED will go to solid ON and the App’s Calibration
screen will appear
6. Tap the green CAL button on the Calibration screen.
7. When the pen’s LED flashes rapidly, IMMEDIATELY dip
the pen in calibration 7.0 pH buffer so that the cell is
completely submerged. The Calibration screen will display. “Calibrating pH ...”
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