Ahlborn ALMEMO 2390-5 Instrucciones de operaciones Pagina 18

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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
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