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TXP-WTA_Instruction_Manual_(Rev1.3)
their original factory defaults values. Each smart sensor has a protected database containing a copy of the original
factory default values which the TXP-WTA Sensor Transmitter user cannot modify.
NOTE: The Load Defaults Menu retrieves these original factory default values from the smart sensor and repopulates
all Channel Menus to match.
8.3 Alarm Settings
The Alarm Settings page includes the Alarm 1, 2, 3 and Fault Menus shown in Figure 7 3. Alarm conditions are
indicated by "A1", "A2", "A3" and "FAULT" LCD icons on data displays and by flashing the A1, A2, A3 and FAIL LED's.
The FAIL LED also flashes if the TXP-WTA Sensor Transmitter detects a missing or defective sensor. Up or Down
pointing arrows indicate if the alarm is set for a high or low trip respectively.
Figure 8.3 – Alarm Settings Menus
8.3.1 Set Point
Set Point enters the Eunit value where the alarm trips. The Fault Set Point may only be set for negative values
between 0% and -10% of range and is always Low Trip. This makes it function as a FAULT alarm and trip when the
monitored value is out-of-range negative.
8.3.2 Dead Band
Dead Band for A1, A2 and A3 have a minimum value of 1% and a maximum value of 10%. Dead Band is useful for
preventing alarm cycling when the monitored value is hovering around the set point.
EXAMPLE: With a range of 0-100 ppm, if Dead-Band equals 5% and the set point is 20 ppm, after tripping at 20 ppm
the value must drop below 15 ppm to reset. Dead Band for the Fault alarm is fixed at 1%.
8.3.3 Low Trip
Low Trip for A1, A2 and A3 set to YES causes the alarm to trip as the value falls below the set point. The Fault alarm
is always a Low Trip.
REV – 1.3
[34-2900-0207-4 ]
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