Det-Tronics EA2100CG Eagle 2000 Communication Gateway - Manual (Page 34)

CALIBRATION ALGORITHM A
(Type Codes 1, 2, 3, 4) for Environmental Monitors
Normal Calibration
1. Activate the reed switch or input 1 on the communi-
cation module. The red LED blinks at a 2 Hz rate
for 3 seconds while the reed switch or input 1 is
closed.
2. The calibrate LED on the communication module
flashes at a 1 Hz rate, indicating that it is ready for
the zero input. The calibrate bit in the communica-
tion module status word is set.
3. Perform the PathWatch zero calibration.
4. Activate the reed switch or input 1 on the communi-
cation module. The red LED will blink at a 2 Hz rate
for 3 seconds while the reed switch or input 1 is
closed.
5. The communication module records the uncalibrat-
ed value in the calibration log and calibrates the
zero value. The calibrate LED goes on steady.
6. Perform the PathWatch span calibration.
7. The calibrate LED blinks at a 1 Hz rate when the
input increases.
8. Activate the reed switch or input 1 on the communi-
cation module. The red LED blinks at a 2 Hz rate
for 3 seconds while the reed switch or input 1 is
closed.
9. The communication module records the uncalibrat-
ed value in the calibration log and calibrates the
span value.
10. The calibrate LED goes on steady.
11. Remove the span gas and re-adjust the zero poten-
tiometer if necessary.
12. Activate the reed switch or input 1 on the communi-
cation module. The red LED blinks at a 2 Hz rate
for 3 seconds while the reed switch or input 1 is
closed.
13. The calibration is complete. The calibrate LED
turns off and the calibrate bit in the status word is
reset.
If the calibration is not completed within 12 minutes, the
previous calibration values are restored and the calibra-
tion is logged as aborted. The calibrate LED blinks at a
4 Hz rate, the calibration fault bit in the status word is
set, and the calibrate bit is reset.
Calibration After Sensor Replacement
1. Open the communication module junction box
cover and press the sensor replacement switch.
2. The calibrate LED on the communication module
flashes at a 1 Hz rate, indicating it is ready for the
zero input. The calibrate bit in the status word is
set.
3. Perform the PathWatch zero calibration.
4. Activate the reed switch or input 1 on the communi-
cation module. The red LED blinks at a 2 Hz rate
for 3 seconds while the reed switch or input 1 is
closed.
5. The communication module records the uncalibrat-
ed value in position one of the calibration log and
calibrates the zero value. The calibrate LED goes
on steady.
6. Perform the PathWatch span calibration.
7. The calibrate LED blinks at a 1 Hz rate when the
input increases.
8. Activate the reed switch or input 1 on the communi-
cation module. The red LED blinks at a 2 Hz rate
for 3 seconds while the reed switch or input 1 is
closed.
9. The communication module records the uncalibrat-
ed value in the first register of the calibration log
and calibrates the span value.
10. The calibrate LED goes on steady.
11. Remove the span gas. Re-adjust the zero poten-
tiometer if necessary.
12. Activate the reed switch or input 1 on the communi-
cation module. The red LED blinks at a 2 Hz rate
for 3 seconds while the reed switch or input 1 is
closed.
13. The calibration is complete. The calibrate LED
turns off and the calibrate bit in the status word is
reset.
Pressing the sensor replacement switch aborts the cali-
bration and starts over. Resetting the communication
module will abort sensor replacement.
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