Myron L PTBT2 - Manual (Page 5)

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8. When the LED flashes slowly, swirl the pen around to remove bubbles, keeping the
cell submerged. The Calibration screen will display. “Calibrating 7.0 pH ...”
9. When the LED light goes solid ON, the Calibration screen will display
“7.0 ph CAL SAVED” along with the before and after calibration values.
10. DONE and CONTINUE Buttons will appear at the bottom of the Calibration Screen.
NOTE: Tap the DONE button to end the calibration at this point, or;
11. Rinse the pH sensor with the next pH buffer (it can be either 4.0 pH or 10.0 pH
buffer).
12. Tap the CONTINUE Button to calibrate the next point.
13. Repeat steps 7 trough 10. The instrument will
automatically recognize the calibration point based on the buffer used.
14. After the 3rd calibration point is successfully saved only the
DONE button will appear. Tapping this button ends the
calibration.
C. Single-Point Calibration.
1. Using either 4, 7, or 10 pH buffer, perform the calibration as described in steps 1
through 9 of Section B.
2. After the calibration point is successfully saved, tap the DONE button
D. Factory Calibration
When pH buffers are not available, the PTBT2 can be returned to factory default
calibration using the FAC CAL function. This will erase stored wet calibration constants.
NOTE: default factory calibration resets the electronics only and does NOT take the
condition of the sensor into consideration.
1. Inside the App tap the CAL button in the Feature Navigation Bar. The App screen
will say, “Paired ULTRAPEN is Offline.”
2. Press and release the push button. The screen will display, “Press and hold the
button on the ULTRAPEN to enter CAL mode”.
3. Press and Hold the ULTRAPEN’s button the LED will go to solid ON and the App’s
Calibration screen will appear.
4. Tap the red FAC CAL button. A warning dialogue box
will appear.
5. Tap the OK button in the dialogue box. The App’s Calibrating screen will display,
“FAC CAL Reset”.
MAINTENANCE
I. Battery Replacement
The PTBT2 App display has an indicator that depicts the pen battery’s charge level.
When the charge level falls below 25%, the indicator will flash red. Imediately replace
the battery with an new N type battery.
1. In a CLEAN DRY place unscrew the battery cap in a counter-clockwise motion.
2. Slide the battery and battery housing out of the pen.
3. Remove the depleted battery from its housing.
4. Insert a new battery into the battery housing oriented with the negative end touching
the spring.
5. Align the groove along the battery housing with the guide bump inside the pen case
and slide the battery housing back in.
6. Screw the battery cap back on in a clockwise direction.
... Continued from page 3
II. Routine Maintenance
1. ALWAYS rinse the pH sensor with clean water after each use.
2. ALWAYS replace the soaker cap half filled with pH Sensor Storage Solution to
prevent the sensor from drying out after each use.
3. If the sensor becomes dirty, clean the sensor surface with an isopropyl soaked
cotton swab. Then rinse thoroughly with clean water.
4. Do not drop, throw or otherwise strike the pen. This voids the warranty.
5. Do not store the pen in a location where the ambient temperatures exceed its
specified Operating/Storage Temperature limits.
Do not over tighten.