Myron L PTBT1 - Manual (Page 5)

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A. Wet Calibration
Use a calibration solution specified for the measurement mode (see the Specification
table). Calibrating TDS calibrates Salinity for the same value and vice versa.
1. Pour Myron L ® Company calibration solution into a clean container.
2. Rinse the cell 3 times by swirling it around in fresh calibration solution.
3. Open the PTBTx App.
4. Tap the CAL button in the Feature Navigation Bar. The App
screen will appear and say, “Paired ULTRAPEN is Offline”.
5. Grasp the pen near the pen cap to avoid sample contamination.
6. Remove pen from the rinse solution, then empty and refill the container with fresh
solution.
7. 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.”
8. Press and Hold the pen’s button. The LED will go to solid ON and the App’s Calibration
screen will appear.
9. Tap the green CAL button on the Calibration screen.
10. When the pen’s LED flashes rapidly, IMMEDIATELY dip
the pen in calibration solution so that the cell is completely submerged.
The Calibration screen will display. “Calibrating Conductivity ...”
11. When the LED flashes slowly, swirl the pen around to remove bubbles, keeping
the cell submerged. Keep pen at least 1 inch (2½ cm) away from sides/bottom of
container.
12. When the LED light goes solid ON, the Calibration screen will display
“CAL SAVED” along with the before and after calibration values.
B. Factory Calibration
If you do not have the proper calibration solution or wish erase the stored wet calibration
constants, use the FAC CAL function
1. Open the PTBTx App.
2. Tap the CAL button in the Feature Navigation Bar. The App screen will say, “Paired
ULTRAPEN is Offline.”
3. Press and release the push button. The screen will display, “Press and hold the
button on the ULTRAPEN to enter CAL mode”.
4. Press and Hold the ULTRAPEN’s button. The LED will go to solid ON and the App’s
Calibration screen will appear.
5. Tap the red FAC CAL button. A warning dialogue box
will appear.
6. Tap the OK button in the dialogue box. The App’s Calibrating screen will display,
“FAC CAL Reset”.
MAINTENANCE
I. Battery Replacement
The PTBT1 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 a new N type battery.
1. In a CLEAN DRY place unscrew the pen cap in a counter-clockwise direction.
2. Slide the cap 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 pen cap back on in a clockwise direction.
... Continued from page 3
Do not over tighten.