Sensorex TX2000, Operation Manual

Page: 43 / 50

7.3.5 TECH, NIST buffer Calibration
The procedure below is two-point calibration of TECH buffer. (The procedure is same as
NIST buffer mode.) First, enter the setup of Multi-points calibration and set the number of
calibration point to 2. (See chapter 6.5 Multi-Cal) Then, go to Calibration menu and select
TECH mode. Follow the procedure diagram below. For three-point calibration, you will need
to set 3 points in the Multi-Cal setting in advance. The calibration procedure will then be
the same.
Press or to
change the page of
calibration result display
Clean the electrode with
distilled water and then put
it into the second buffer.
If under MTC temperature
mode, press or
to adjust temperature value.
Or press to decide to
simply make a single point
calibration.
The instrument
measures the mV value
of the buffers. Press
to directly show the
result, or wait and the
result will
automatically display.
Clean the electrode
with distilled water
and then put it into the
first buffer. If under
MTC (Manual Temp.
Compensation)
temperature mode,
press or
to adjust temperature
value.
Press to confirm it.
Press to confirm it.
Obtain the pH value of
first point buffer
solution.
Obtain the pH value of
second point buffer
solution.
The instrument
measures the mV value
of the buffers. Press
to directly show the
determination result, or
wait and the result will
automatically display.
Press to confirm it.