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Satellite XT 4-20 mA Versions
7.1.2
Faults
Instrument faults refer to a problem which prevents the instrument from operating properly
and interferes with the ability to monitor or document concentration alarms.
If the instrument has detected an instrument fault, a fault signal of a defined output current
for each different fault condition is sent to attached control systems. The green status LED
is off. The LCD display is flashing while indicating the specific fault message.
Fault - ADC Not Ready !
This indicates that there is a problem with the internal
electronics. The AD Converter has failed.
Switch power supply for this unit off and on again. If the
instrument still shows this message, switch off power supply
for this unit and contact MST for further instructions.
Output current is 2.0 mA.
Fault - No Sensor !
This message indicates that no sensor is inserted or that a
sensor type not suitable for the Satellite is used.
To eliminate the problem, insert the correct sensor.
When using the Satellite in combination with the sensor
extension, make sure that all connections are firmly attached.
Output current is 1.8 mA.
Fault - Wrong Sensor !
This message indicates that the sensor installed is not the
sensor assigned to this particular instrument.
To correct the problem, insert the sensor assigned and
documented to this instrument. The data are stated in the test
certificate provided with the shipment.
Output current is 1.6 mA.
Fault - Replace Sensor !
This message indicates that the sensor presently installed is
depleted (the warning CHECK SENSOR ! has been ignored).
To correct the problem, replace the old sensor immediately.
Output current is 1.4 mA.
! This function is not available for instruments with
oxygen sensor or catalytic sensor.
- - - - F AU L T - - - -
ADC NOT RE ADY !
- - - - F AU L T - - - -
NO S ENSOR !
- - -
WR
-
ON
F A
G
U L
S E
T
NS
- -
OR
- -
!
- - - - F AU L T - - - -
RE P L ACE S ENSOR !
7-2
Troubleshooting - Section 7