Thermo Fisher Scientific Alpha COND 550 - Manual (Page 27)

Instruction Manual
Alpha-
COND 550
21
5.4 Measuring Range Settings
The conductivity monitor has 5 different measuring ranges. You need to select a
range which is the most suitable for conductivity reading of your applications/samples.
The factory default is 2000 µS (0 to 2000 µS/cm).
The measuring range you select here will affect the way the monitor behaves in the
measurement mode and calibration mode. In measurement mode, if the conductivity
reading of the monitor is above the selected measuring range, the LCD shows “Or”
(over range) error. In calibration mode, the monitor adjusts calibration tolerance
based on full scale of the selected measuring range. The calibration is carried out
only for the selected measuring range.
WARNING: If you change the measuring range of the monitor after calibration is
done, the monitor will reset back to its factory default calibration.
SETUP
HOLD
ENT
1
µS
HOLD
SETUP
2
µS
HOLD
SETUP
2
µS
HOLD
SETUP
2
mS
HOLD
SETUP
2
mS
HOLD
SETUP
2
ENT
ENT
ENT
ENT
ENT
Press
▲ or ▼ key to access other setup screens or press ▲ and ▼ key
simultaneously (escape) to return to measurement mode.
1 1
From measurement mode press
ENT key to enter setup mode as
described in section 5.1. The LCD
shows the first screen of setup mode
(rAng). Press ENT key to access
measurement range setting (rAng).
2
The upper display shows the
currently selected measuring range.
The factory default is 2000 µS. The
lower display shows the currently
configured cell constant (k). (Refer
section 4.2 for setting cell constant)
Press
▲ or ▼ key to select the
desired measuring range. Press
ENT key to confirm your selection.
The monitor reverts to rAng screen.
Measuring range Resolution
0.00 to 20.00 µS/cm 0.01 µS/cm
0.0 to 200.0 µS/cm 0.1 µS/cm
0 to 2000 µS/cm 1 µS/cm
0.00 to 20.00 mS/cm 0.01 mS/cm
0.0 to 200.0 mS/cm 0.1 mS/cm