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1. INTRODUCTION
This manual provides information and operation instructions for the Model T703
and the Model T703U calibrators. For simplicity the information and instructions
in this manual refer to both models except where the Model T703U diverges in
technical or operational aspects, in which case the T703U is clearly defined.
1.1. T703/T703U CALIBRATOR OVERVIEW
The Model T703 and the T703U are microprocessor controlled ozone calibrators
for calibration of precision ambient ozone instruments, such as the TAPI T400.
They feature an internal ozone photometer that provides very accurate closed
loop feedback control of the ozone concentration. However, the T703U is capable
of generating ozone in a low range (fractional mode), for ultra-low ozone
production.
As many as 50 independent calibration sequences may be programmed into the
T703/T703U, covering time periods of up to one year. The setup of sequences is
simple and intuitive. These sequences may be actuated manually, automatically,
or by a remote signal. The sequences may be uploaded remotely, including
remote editing. All programs are maintained in non-volatile memory.
The T703/T703U design emphasizes fast response, repeatability, overall accuracy
and ease of operation. It may be combined with the Model 701 Zero Air
Generator to provide the ultimate in easy to use, precise calibration for your
ozone instruments.
Some of the exceptional features of your T703/T703U Photometric O
3
Calibrator
are:
Advanced T-Series electronics
LCD Graphical User Interface with capacitive touch screen
Bi directional RS-232 and 10/100Base-T Ethernet, optional USB and RS-
485, ports for remote operation
Front panel USB ports for peripheral devices
12 independent timers for sequences
Nested sequences (up to 5 levels)
Internal ozone generator and photometer allows use as primary or transfer
standard
UV Lamp Feedback modes: current control; photometer control
Lightweight for transportability
T703U: ultra-low ozone production down to 3ppb
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