Sabio 2010D, Operation Manual

Page: 145 / 182

Internal Calibrations Page 8-12
Interactively Calibrating the Ozone Generator
The technique used for interactively calibrating the
2010D '
s ozone
generator is almost identical to that used for a mass flow
controller. The main differences are:

An ozone generator calibration requires an ozone standard
rather than a flow standard.

The
2010D '
s outlet manifold must be vented to atmosphere for
ozone generator calibrations.

As shown in Figure 8-7, another field must be entered: the
total flow through the
2010D
during the ozone calibration.
This is subsequently used to compensate the ozone output for
different diluent flow rates.
Following is a step-by-step procedure for performing an
interactive ozone calibration:
[1] If power is not applied to the
2010D
and/or the ozone
standard, apply power to both and allow at least 60 minutes
for everything to warm up and stabilize.
[2] The
2010D '
s pneumatic system must be free of leaks before
performing ozone calibrations. If there is any doubt
that the
2010D
is leak-tight, perform a leak test.
[3] Attach a clean, dry compressed air supply to the diluent
input. Ideally, this would be the same supply subsequently
used with the
2010D
for analyzer calibrations. The
pressure should be set to 25-30 PSIG.
[4] Cap all unused
2010D
outlet ports, except one for a vent and
one which should be connected to the inlet of the ozone
standard. The last port in the flow path, the outlet
labeled "Vent", should be vented to atmospheric pressure.
If vented to the room, a short length of tubing should be
attached to it. If vented through a scrubber or a long
length of tubing, it is important to minimize the pressure
drop so the outlet manifold remains substantially at
atmospheric pressure.