T750U0 pages

Model T750U

Trace Level Portable Gas Calibrator

The Model T750U is a portable, microprocessor based calibrator for precision gas

Ultra-stable ozone output to 3 ppb

analyzers. Using highly accurate mass flow controllers combined with compressed

Ultra-low gas phase titration (GPT) to 3
ppb NO2

sources of standard gases, calibration standards are provided for multipoint span
and zero calibrations. The T750U is housed in a high-density, molded travel case
which includes an integral handle and wheels for durability and ease of use in the

Built-in photometer, ozone generator, and
GPT chamber

field.

Large, vivid, and durable color graphics
display with touch screen interface

The Model T750U is designed for the demanding requirements of ultra-sensitive

Ethernet, RS-232, and (optional) USB com
ports

measurements. The ability to calibrate and verify linearity for NO2 levels below 5 ppb
is difficult with standard calibrators. To overcome this limitation, the Model T750U
ozone generator operates in two modes; a high range with similar performance to
the Model T750 ozone generator, and a low range, or “fractional” mode, for
producing accurate ozone levels down to 3 ppb. To ensure the highest accuracy of
NO2 output, the calibrator measures the ozone concentration prior to performing a

Front panel USB ports for peripheral
devices and firmware upgrades
Nested sequences (up to 5 levels)
Software linearization of mass flow
controllers (MFC)

gas phase titration (GPT), and the range is selected automatically by the Model

3rd MFC for wide dynamic range
(optional)

T750U based on ozone concentration and flow specified by the user.

Glass GPT chamber

All T Series instruments offer an advanced color display, capacitive touch screen,
intuitive user interface, and flexible I/0. All instrument set up, control and diagnostic

Inlet for external ozone reference sources
Two year warranty

information is available through the front panel, or via RS232, Ethernet, or the
optional USB com port, either locally or by remote connection using the included
APIcom™ software.

Free Customer Support by telephone and email for the life of the instrument