Sensorex TX3000 - Calibration of Pre-Set NIST. Buffer (Cn1); ORP Calibration

PRODUCT INSTRUCTION MANUAL
Page 26 of 29
Part 8 Calibration (cont.)
8.5 Calibration of Pre-set NIST buers (Cn1): Use NIST buers and follow instructions in section 8.4 (same
as Ct1).
8.6 ORP Calibration: It is unnecessary to make regular calibration of ORP electrodes. it is only necessary to
use ORP Buer to check the electrode or adjust the deviation of electrical potential. Press "CAL" + "MODE"
keys simultaneously to adjust ORP zero-point electrical potential.
Form: INSTRTX3000-Rev A
Cal.
Mode
+
Clean the electrode completely, and put
it into the mV standard solution (B225 -
Zobell's Solution) Check the dierence
between the readout and buer solution.
Press "MODE" or "RIGHT ARROW" key to
set the digit until it is equal to the buer’s
standard mV value. Then, press "ENTER"
key to save it or press "CAL" key to return to
the measurement mode.
Mode
OR
Enter
Enter
FIG 8-4