Special Operating Conditions
Segment test of the display automatically after switch-on.
Supply voltage: lower than 7V:
symbol illuminated
BAT
lower than 6V:
1:L o b A t
Sensors that are not connected,
deactivated measuring points,
cleared programming values.
Memory output
S O u t
U
Sensor correction or scaling
arrow
CORR
illuminated.
Measuring point scan in progress arrow
START
illuminated.
Measuring point scan with storing
arrow
MEMORY
illuminated.
Measuring point scan with output
arrow
RS232C
illuminated.
Additional function selected
arrow
F
illuminated.
Alarm Conditions
are displayed as follows and cause an alarm (see manual 6.3.9):
Sensor breakage:
abbr. flashes
1: N i C r
°C
Overshooting of measuring range:
maximum value flashes
Undershooting of measuring range:
minimum value flashes
Exceeding of limit value:
arrow
ALARM
illuminated
Undershoot. of meas. range CJ compens. (cold junction)
Measuring without ext. CJC or CJC break.:
flashes
Exceeding of range of values (>65000):
flashes
1:6 5 0 0 0
5.2 Keyboard
The keyboard (6) has the following functions that are displayed above the keys:
Function
Normal
Enter
Programming of Parameters
ENTER
▲
Selecting Measuring Points
CH
▲
CLEAR
Start and Stop of Meas. Point Scans
START/STOP
▲
Data Output
OUTPUT
▼
Selecting Additional Functions
F
±
After operating the key
ENTER
a digit or abbreviation is flashes in the display,
i.e. the instrument is in edit mode and the
red
designations below the keys are
valid. The keys
±
,
▲
,
▼
are then available for altering the input figure, the
key
operates as cursor key and
CLEAR
is available for clearing parameter
▲
data. The input is complete when the last digit has been confirmed with
operating the key
.
▲
1: - - - -
1: C J
18
ALMEMO
®
2290-8
Display and Keyboard
