Calibration
IV-15
Thermo Scientific Orion 2120XP Calcium Hardness Analyzer User Guide
Offline Calibration
Procedure
Step
Operator Action
Scrolling Marquee
Main Display
Notes
1
Open the bypass/needle valve to redirect
the sample flow.
Actual temperature reading
Actual concentration
reading
2
Press
to initiate the calibration.
HOLD and CAL appear
as mode.
3
If the calibration password is active, enter
the calibration password by pressing
/
to set the first digit,
to move to the next digit,
/
to set the values of the
remaining digits and
to move
through the remaining digits.
Press
to accept the password.
ENTER PASSWORD
PASS
# # # #
4
CH1 or CH2
(flashing)
CAL
CHnL
Displayed for two
channel analyzer
5
Press
/
to select the
channel that will be calibrated and press
to begin the calibration.
CH1 or CH2
(flashing)
CAL
CHnL
Action required for
two channel analyzer
6
DKA or OFFL
(flashing)
CAL
tYPE
7
Press
/
to select OFFL
and press
to accept the setting.
OFFL
(flashing)
CAL
tYPE
8
Wait 1 to 10 minutes.
MEASURING SAMPLE
WAIT 1 MINUTE
AWAITING DATA STABILITY
Actual readings
flashing
System continuously
evaluates the
data until a stable
condition is met.
9
Take a QC sample from the 2120XP
analyzer bypass for laboratory analysis.
Press
.
TAKE SAMPLE FROM BYPASS DRAIN
PRESS ENTER TO USE METER
THEN PRESS CAL TO ENTER LAB
RESULTS
LAb
The offline calibration feature is simply a one point calibration without
a slope change. The term “offline calibration” refers only to the fact that
a sample from 2120XP analyzer bypass is taken “offline” for laboratory
analysis; in fact, no downtime is experienced and the analyzer remains
online throughout the procedure.