Sensorex TX10 1/8 DIN, Operation Manual

Page: 10 / 17

pg. 10
E. pH Calibration mode
The TX10 uses 2-point calibration for pH. The first point must be 6.86/7.00, and the second
point can either be 4.00/4.01 or 9.18/ 10.01.
In the pH Measure mode, pressing [UP] key and [ENTER] key at the same time to allow the
meter to go to the pH Calibration mode.
1. Buffer 1 (STAND) calibration:
Buffer 2 calibration
+ENTER
ENTER
STAND
CAL
7.00
pH
STAND SLOPE
7.00
pH
HI2
STAND
CAL
7.00
pH
Enter into the pH calibration mode, the “ STAND ” icon will flash, the unit is ready to be
standardized at the first buffer. Rinse the pH and ATC/Temp probes in distilled water and
immerse them in the first buffer solution (either 7.00 or 6.86). Allow temperature reading
to stabilize, then press “
ENTER ” key to calibrate. The “ pH ” icon will flash until the unit
detects a stable reading. Once the unit calibrates the first point, the “ SLOPE ” icon will
flash. The unit is ready to be sloped at the second buffer
.
2. Buffer 2 (SLOPE) calibration:
Rinse the pH and ATC/Temp probe in distilled water and immerse them in the second
buffer solution (either 4.00/4.01 or 9.18/10.01). Allow temperature reading to stabilize,
then press “
ENTER ” key to calibrate. The “ pH ” icon will flash until the unit detects a stable
reading. Once the unit calibrates the second point and the unit will automatically exit the
calibration mode and goes to the pH Measure mode . Dual point calibration is complete.
ENTER
Buffer 1 calibration
Measure mode
STAND SLOPE
CAL
7.00
pH
STAND SLOPE
CAL
7.00
pH