Operating Instructions
Thermo Scientific Alpha COND 1000
8
5 MEASUREMENT
5.1
Display in Measurement mode
When the controller is initially powered on, it automatically enters into the
Measurement mode after the large dual LCD displays all segments briefly.
The upper display shows the measured Conductivity value, while the lower display
shows the temperature value. Annunciators at the right side of the display indicate
whether the controller is set for
μ
S or mS measurement. Similarly annunciators or
icons at the top or left side of the display shows the current status of controller, e.g.
“HOLD”, “SETUP”, “MEAS”, “CAL”, “READY”, etc.
5.1.1
Check electrode performance
To read current electrode slope and offset values without changing them:
1) Press the
CAL
key followed by the
ENTER
key without adjusting the security
code (leave code at “000”). The upper display shows the condition of the probe.
The lower display reading shows the temperature reading.
Note: If security code is changed to a value other than “000”, pressing the
ENTER key will return to the Measurement mode, without displaying electrode
information.
2) Press the
ENTER
key a second time to return to Measurement mode.
5.1.2
Checking set points
To read current set point values without changing them:
•
Press
the
RELAY
Selection
(Rel A / Rel B)
key. The upper display shows
the set point for Relay A; the lower display shows “SP1”.
•
After two seconds the upper display shows the set-point value for Relay B;
the lower display shows “SP2”.
•
After an additional two seconds, the controller returns to the Measurement
mode.
