14
If the measured gas goes outside the range of the alarm settings
then an audible alarm and a red flashing visual alarm will be
generated. In addition, the relevant indicator on the liquid crystal
display will flash. The graph is then replaced by a printout of each
individual measurement together with a time stamp and an alarm
indicator as shown below:
12/04/9516:14
NOcalibrationdue:01/01/96
NO2calibrationdue:07/01/96
NOupperalarm:15
NOloweralarm:5
NO2upperalarm:4
Patient:...............................
Hospital:...............................
Technician:...............................
5NO150NO24
1715
1730
1741AlarmNO=22.3NO2=1.85
1741AlarmNO=22.4NO2=1.95
1741AlarmNO=23.1NO2=2.10
1742AlarmNO=23.0NO2=1.90
If the NO measurement exceeds 100ppm or NO
2
exceeds 9ppm then
the external alarm, accessible at the rear of the instrument, is