Special operating states
Segment test for display
This is performed automatically
each time the device
is switched ON.
Voltage supply:
below 7 volts:
-Symbol lights up
BAT
below 6 volts:
1:L o b A t
Sensor supply power shorter than
UMIN
:
1:U - Lo
Checksum error during
device calibration:
Non-connected sensors,
deactivated measuring points,
deleted programming values,:
Non-permitted measuring range:
Sensor correction or scaling
CORR
arrow lights up
Calibration resistance switched on
CORR
arrow flashes
Measuring operation started
START
arrow lights up
Averaging in progresst
arrow lights up
M
Measured value recording in progress
MEM
arrow lights up
Measuring point scan with output
COM
larrow lights up
Function selected
F
arrow lights up
If all functions are activated,
then
F
arrow flashes
Malfunctions
Malfunctions are displayed as follows and trigger an alarm; (see Manual 6.3.9):
Sensor breakage:
Abbreviation flashes
1: N i C r
°C
Limit value exceeded:
ALARM
arrow lights up
Measuring range overshot:
Maximum value flashes
Measuring range undershot:
Maximum value flashes
Measuring range undershot for
(Cold junction)
cold junction compensation,
flashes
or measuring without external
cold junction compensation,
or cold junction compensation breakage
Values range overshot (>65000):
flashes
1:6 5 0 0 0
C A L E r r
1:
- - - -
X
X
1: E r r
1: C J
18
ALMEMO
2390-5
Display and keypad