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TELEDYNE API
M703E Calibrator Operator’s Manual Operating the M703E Calibrator
6.11. OPERATING THE M703E CALIBRATOR AS AN O
3
PHOTOMETER
The M703E can easily be configured to measure an external source of ozone.
6.11.1. SET UP FOR OPERATING THE M703E AS AN O
3
PHOTOMETER
To convert the M703E from an O
3
calibrator to and O
3
photometer:
1. Remove the two loop-back tubing assemblies on the rear panel connected to the ‘PHOTO IN’ and
‘PHOTO REF IN’ fittings.
2. Connect the ozone source to be measured to the ‘PHOTO IN’ fitting.
This gas must be supplied at atmospheric pressure.
3. Connect a reference gas (Zero Air) for the photometer to the ‘PHOTO REF IN.’
This gas must be supplied at atmospheric pressure. To avoid interference effects, the reference gas
should be from the same source than is being used to feed the ozone generator that is being
assayed.
EXHAUST line: Max Length=3 meters ( or 10 feet)
Enclosure Wall
M703E
Photometric
O3 Calibrator
VENT
CAL GAS OUT
DRY AIR IN
CAL GAS OUT
PHOTOMETER OUTLET
PHOTOMETER INLET
PHOTOMETER ZERO IN
PHOTOMETER ZERO OUT
EXHAUST
ZERO AIR IN
REFERENCE GAS
SOURCE
Capped
O
3
SOURCE TO BE
MEASURED
Capped
Minimum input gas flow for
Photometer is 800 cc
3
/min
1
1
Figure 6-4: Set up for Using the M703E to Measure an External O
3
Source
05744 Rev B 77