Det-Tronics Eagle Quantum 95-8470-05, Инструкция по эксплуатации

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7. The communication module waits 3 seconds.
8. The calibration is complete. The calibrate LED
turns off.
Sensor Replacement
WARNING
The hazardous area must be de-classified prior to
removing a junction box cover with power applied.
1. Open the junction box cover and press the sensor
replacement switch.
2. The calibrate LED on the communication module
blinks at a 1 Hz rate, indicating that it is ready for
the zero input.
3. Replace the sensor and set the sensor switch
(located on the sensor cell) to zero.
4. Activate the reed switch. The red LED blinks at a 2
Hz rate for 3 seconds while the reed switch is
closed.
5. The communication module records the
uncalibrated value in position one of the calibration
log and calibrates the zero value. The calibrate
LED is on steady.
6. Set the zero switch on the sensor to normal. Apply
clean air (20.9% oxygen) to set the sensor analog
span value.
7. The calibrate LED blinks at a 1 Hz rate when the
input goes high.
8. Activate the reed switch. The red LED blinks at a 2
Hz rate for 3 seconds while the reed switch is
closed.
9. The communication module records the
uncalibrated value in the first register of the
calibration log and calibrates the span value.
10. The calibration is complete. The calibrate LED
turns off.
Pressing the sensor replacement switch aborts the
calibration and starts over.
CALIBRATION ALGORITHM G
FOR DCUs WITH POINTWATCH
Routine Calibration
1. Apply the zero gas.
2. Activate the reed switch for at least 4 seconds. The
red LED blinks at a 2 Hz rate for 3 seconds while
the reed switch is activated.
3. The calibrate LED on the communication module
blinks at a 1 Hz rate, indicating it is ready for the
zero input.
4. When a steady zero reading is obtained, the
communication module records the uncalibrated
value in the calibration log and calibrates the zero
value during this time. The LED turns on steady.
5. Apply the calibration gas. The calibrate LED blinks
at a 1 Hz rate when the sensor detects gas.
6. When the sensor input has been stable for 30
seconds, the communication module records the
uncalibrated value in the calibration log and
calibrates the span value.
7. The calibrate LED goes on steady.
8. Remove the calibration gas.
9. The communication module waits until the sensor
input drops below 4% full scale.
10. The calibration is complete. The calibrate LED
turns off.
NOTE
If the calibration is not completed within 12
minutes, the calibration will be aborted and the
detector will revert back to the previous calibration
values. The red LED will blink at a 4 Hz rate. The
calibration will be logged as aborted.
Sensor Replacement
WARNING
The hazardous area must be de-classified prior to
removing a junction box cover with power applied.
1. Remove power from the DCU and the PointWatch
unit. Replace the PointWatch. Apply power, then
press the sensor replacement switch on the
communication module for about 1 second. Allow
at least 10 minutes for the sensor to warm up.
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