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Teledyne API T703/T703U Calibrator Operation Manual Getting Started
39
3.3.3. OUTPUT MANIFOLD
A four-port output manifold is supplied on the rear panel of the T703/T703U enabling
simultaneous testing of up to two external instruments. Sample lines for ozone
instruments to be calibrated can be connected directly to this manifold.
To prevent ozone exposure, the bottom port of this manifold is used as a vent and should
be connected to a proper unpressurized vent manifold. It is important that the
backpressure at this vent fitting be kept to a minimum. If a vent line longer than 2
meters (~6 feet) is required, then 3/8” OD tubing should be used.
Any unused ports on this manifold must be capped.
3.3.4. EXHAUST
The port labeled ‘EXHAUST’ contains the exhaust gas from the internal photometer and
may contain ozone. This port should be connected to a proper unpressurized vent
manifold to prevent ozone exposure.
3.3.5. MEASURING AN EXTERNAL OZONE SOURCE
The T703/T703U can easily be configured to measure an external source of ozone.
See Section 4.11 for details on operating the unit in this manner.
3.4. INITIAL OPERATION
If you are unfamiliar with the T703/T703U theory of operation, we recommend that you
read Section 9.
For inform
ation on navigating the calibrator’s software menus, see the menu trees
described in Appendix A.
3.4.1. START-UP
After all of the electrical and pneumatic connections are made, turn on the instrument.
The exhaust fan and should start immediately. If the instrument is equipped with an
internal photometer installed, the associated pump should also start up.
The front panel display will show a splash screen and other information during the
initialization process while the CPU loads the operating system, the firmware and the
configuration data.
Once the CPU has completed this activity, it will begin loading the calibrator firmware
and configuration data. During this process, model and software revision information
appear briefly in the Param field of the calibrator’s front panel display before the
firmware is fully booted:
The calibrator should automatically switch to STANDBY mode after completing the
boot-up sequence.
3.4.2. WARM UP
The T703/T703U Photometric calibrator requires a minimum of 30 minutes for all of its
internal components to reach a stable operating temperature.
07223C DCN6572