Setup Using A Calibration Manifold; Calibration Manifold Exhaust/Vent Line; Performing An O Photometer External Calibration; Figure 7-4: External Photometer Validation Setup With Calibration Manifolds - Teledyne T700 Operation Manual

Calibration and Verification

7.3.3.2. Setup Using a Calibration Manifold

Vent line
Max Length=3 meters
( or 10 feet)
Calibration
Source Gas
connections are
as shown in
Section 3.2

Figure 7-4: External Photometer Validation Setup with Calibration Manifolds

Note

7.3.3.3. Calibration Manifold Exhaust/Vent Line

7.3.4. PERFORMING AN O
202
Figure 7-4 shows the external zero air and O
photometer connected to the T700 Calibrator via calibration manifolds for both zero air
and O .
3
External O Source
3
REFERENCE
PHOTOMETER
To other calibrators or
PHOTOMETER INLET
Capped PHOTOMETER OUTLET
PHOTOMETER ZERO OUT
CYL1
CYL2
CYL3
CYL4
DILUENT IN
The manifolds as shown in the above drawing are oriented to simplify the
drawing. The actual orientation in your setup is with the ports facing upward.
All unused ports should be capped. A Minimum of 1.1 LPM is required for the
external zero air source.
The manifold‟s excess gas should be vented to a suitable vent outside of the room. The
internal diameter of this vent should be large enough to avoid any appreciable pressure
drop, and it must be located sufficiently downstream of the output ports to ensure that no
ambient air enters the manifold due to eddy currents or back diffusion.
PHOTOMETER EXTERNAL CALIBRATION
3
The following procedure sets values held in the calibrator‟s memory for zero point
OFFSET and SLOPE.
Teledyne API – Model T700 Dynamic Dilution Calibrator
External Zero Air Source
instruments
PHOTOMETER ZERO IN
Capped
EXHAUST
VENT
CAL OUT
CAL OUT
Calibrator
sources as well as the reference
3
Max Length=3 meters
( or 10 feet)
Must be vented with at least
3 ft of 1/4 inch tubing. If the
gas flow on this line is
≥ 5 SLPM the minimum O.D.
must be 3/8 inch
CAL OUT gas outlet
connections to
manifolds/instruments
06873E DCN7106