Revision 14
162
August 02, 2019
Table 8.2: General System Alarms
High Temperature
Triggered if the temperature experienced by
the measuring sensor’s on-board temperature
sensor exceeds the set-point value (in
o
C).
Low Temperature
Triggered if the temperature experienced by
the sensor block’s on-board temperature
sensor goes below the set-point value (in
o
C).
Sensor LED Current
Triggered if the sensor current rises above the
set-point value. , It is probable that there is
likely a problem with the sensor block or the
sample chamber is dirty. The set-point for this
alarm is configured at the factory and should
not be changed
Sensor Comm.
Triggered if the unit is no longer able to
communicate between the motherboard and
the sensor block. If this alarm triggers, the unit
will no longer function correctly
RTC Battery.
Triggered if the voltage from the on-board
clock battery (which maintains the analyzer’s
real-time clock should the power fail), drops
below a hard-coded value. In addition, it will
also trigger if the time and date in the real-
time clock varies from the time and date of the
connected PC by more than a certain amount.
****how much
Maximum Tape Advance
Triggered if the motor advances the tape
more than a certain number of rotations
without getting a corresponding signal from
the Optical Encoder that controls the tape
advance. If this alarm triggers, it will generally
indicate a problem with the encoder. The
length of the maximum tape advance can be
set by the user, but it is advised to leave this
set at the factory default
Low Tape
The analyzer can be configured with an
optional optical low tape sensor. If this alarm
is triggered, it means that the tape is very low
and should be replaced soon. The Low Tape
alarm, is triggered when there is
approximately 15 feet of tape remaining on
the reel.
Tape Length
Triggered based on the amount of tape that is
calculated to be remaining by the Optical
Encoder. The alarm will trigger when the
length of tape calculated to be remaining, in
feet, drops below the number set in this field.
For this alarm to work correctly, it is essential
that the length of tape in the reel be reset to
the correct length value (usually 300 or 350
feet) in the Global screen whenever a tape is
replaced.
Summary of Contents for ProTech903
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Page 96: ...Revision 14 96 August 02 2019 Figure 5 19 Event Log...
Page 122: ...Revision 14 122 August 02 2019 Figure 5 38 Typical Modicon with Floating Point List...
Page 124: ...Revision 14 124 August 02 2019 Figure 5 40 Expanded Modbus Nodes...
Page 175: ...Revision 14 175 August 02 2019 Figure 9 17 Non Isolated 4 20 mA Inputs...
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