Teledyne API T703/T703U Calibrator Operation Manual Calibration and Verification
121
REFERENCE
PHOTOMETER
Vent line
Max Length=3 meters
( or 10 feet)
Vent line
Max Length=3 meters ( or 10 feet)
To other calibrators or
instruments
External Zero Air
Source
External O
3
Source
Vent line
Max Length=3 meters
( or 10 feet)
O
3
CALIBRATION MANIFOLD
ZERO AIR CALIBRATION MANIFOLD
Enclosure Wall
Enclosure Wall
Photometric
O
3
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
Capped
Capped
Figure 6-2: Set up for Verifying Optional O
3
Photometer Using an External O
3
Generator
NOTE
The manifolds as shown in the above drawing are oriented to simplify the drawing.
All unused ports should be capped.
A Minimum of 1.1 LPM is required for the external zero air source
Calibration Manifold Exhaust/Vent Line 6.1.1.1.
The manifold‟s excess gas should be vented to a suitable vent outside of the
room. This vent should be of large enough internal diameter to avoid any
appreciable pressure drop, and it must be located sufficiently downstream of the
output ports to assure that no ambient air enters the manifold due to eddy currents
or back diffusion.
NOTE
It is recommended that the calibration manifold’s exhaust vent have a minimum internal diameter
of 3/8 inch and a maximum length of 3 meters (or 10 feet)
To Next Page