OZONE ANALYZER BMT 964 Manual, Rev. 04/2021
17
g/Nm
3
% wt/wt
ppm
v
Range-ID
50.00 3.500 25000 5
100.0 7.000 50000 6
150.0 11.00 75000 7
200.0 14.00 100000 8
300.0 20.00 150000 9
400.0 26.00 200000 10
0.750 0.0600 375.0 11
15.00 1.100 7500 12
500.0 31.00 250000 13
600.0 37.00 300000 14
0.500 0.0400 250.0 15
Please bear in mind, that there is a non-linear relationship between g/Nm
3
and
ppm
v
on one side and %wt/wt on the other side. Also, the full range concentra-
tions are not exactly the same upon switching, as the range limits are rounded val-
ues.
Accordingly, the analog outputs may change, when the ozone concentration unit
is changed.
Furthermore, the thresholds of High & Low Alarm are recalculated automatically.
For a complete list of available ranges, please refer to the order sheet.
Pressure
The unit of absolute pressure shown on the display can be changed from bar to
psi, Torr or MPa. Here are some examples for recalculation of pressure range
when changing the unit:
bar psi Torr MPa
1.15 16.68 863 0.115
1.5 21,76 1125 0.150
2.0 29.02 1500 0.200
2.5 36.27 1875 0.250
3.0 43.52 2250 0.300
3.5 50.78 2625 0.350
4.0 58.03 3000 0.400
For a complete list of available ranges, please refer to the order sheet.
Alarms
High-Alarm
This alarm occurs if Enable/Disable is activated and the limit stored under
Threshold is exceeded. In case Relays Open/Close is set to Relays Closing, the
High-Alarm-Relay closes (default), otherwise it opens. At the same time a High-
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