4. Temperature Calibration at one point
The meter allows two types of temperature calibrations:
“single point” and “two point” calibration. Single point
calibration is used to adjust for changes in the tempera-
ture sensor output that can occur with time.
A two point calibration is needed only if you are using a
replacement probe. The built-in temperature sensor
included in the probe is factory calibrated, and does not
require two point calibration.
NOTE:
See the Appendix on pages 26-27 for directions on
temperature calibration at two points.
For one point calibration:
1. Make sure you are in MEAS mode.
Press the MODE
key and select temperature mode (TEMP).
See figure 10.
2.
Dip the probe into a sample of the solution you are
measuring.
3.
Press the CAL/MEAS key
to enter calibration mode.
The primary display shows the measured Conductivity
value, and the secondary display shows the tempera-
ture at factory calibration value.
See figure 11.
4. Place a temperature standard (i.e. an NIST-traceable
thermometer) in the solution with your probe.
Compare the value of the known standard to the
value of the conductivity meter
, to check if tempera-
ture calibration is needed.
5.
Press the
▲
or
▼
keys to adjust the benchtop
meter’s reading to agree with the NIST-traceable
thermometer
. Temperature calibration is restricted to
±5°C from the initial value displayed during calibration.
(If you try to exceed this, the “ERR” indicator will
display.)
See figure 12.
6.
Press the ENTER/RANGE key
to confirm calibration.
The meter will automatically return to Temperature
measurement mode.
NOTE:
To exit from this process without changing the
calibration, press CAL/MEAS instead of
ENTER/RANGE.
10
Figure 11
AUTO
CAL
µ S
°C
ATC
TEMP
Figure 12
AUTO
CAL
µ S
°C
ATC
TEMP
Figure 10
READY
MEAS
AUTO
µ S
°C
ATC
TEMP
warranty/
return of items
appendix
accessories
specifications
error
messages/
troubleshooting
probe care
and
maintenance
setup
program
conductivity
measurement
temperature
calibration
conductivity
calibration
starting up
introduction
Содержание WD-35610-00
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