Filter
Top Products
Introduction M400E Ozone Analyzer Operator’s Manual
1.2. M400E OVERVIEW
The Model 400E photometric ozone analyzer is a microprocessor-controlled analyzer that measures low ranges
of ozone in ambient air using a method based on the Beer-Lambert law, an empirical relationship that relates the
absorption of light to the properties of the material through which the light is traveling over a given distance.
The intensity of an ultra violate light is measured after it passes through a chamber, called the sample cell,
where it is absorbed in proportion to the amount of ozone present. Every three seconds, a switching valve
alternates measurement between a gas stream containing ozone and a stream that has been scrubbed of
ozone.
The analyzer also measures the ambient temperature and pressure of the gas being measured. Using results of
these measurements and the Beer-Lambert equation, the M400E analyzer calculates the amount of ozone
present in the sampler gas.
The M400E analyzer’s multi-tasking software gives the ability to track and report a large number of operational
parameters in real time. These readings are compared to diagnostic limits kept in the analyzers memory and
should any fall outside of those limits the analyzer issues automatic warnings.
Built-in data acquisition capability, using the analyzer's internal memory, allows the logging of multiple
parameters including averaged or instantaneous concentration values, calibration data, and operating
parameters such as pressure and flow rate. Stored data are easily retrieved through the serial port or optional
Ethernet port via our APICOM software or from the front panel, allowing operators to perform predictive
diagnostics and enhanced data analysis by tracking parameter trends. Multiple averaging periods of one minute
to 365 days are available for over a period of one year.
Some of the exceptional features of your M400E photometric ozone analyzer are:
Ranges, 0-100 ppb to 0-10 ppm, user selectable
Single pass ultraviolet absorption
Microprocessor controlled for versatility
Multi-tasking software allows viewing of test variables during operation
Continuous self checking with alarms
Dual bi-directional RS-232 ports for remote operation (optional RS-485 or Ethernet)
Digital status outputs provide instrument operating condition
Adaptive signal filtering optimizes response time
Optional Internal Zero/Span check and dual span points
Temperature & Pressure compensation
Internal data logging with 1 min to 365 day multiple averages
Several options can be purchased for the analyzer that allows the user to more easily supply and manipulate
Zero Air and Span Gas. For more information of these options, see Sections 5.6.1and 5.6.2.
CAUTION
General Safety Hazard
The M400E Photometric Ozone Analyzer should only be used for the purpose and
in the manner described in this manual. If you use the M400E in a manner other
than that for which it was intended, unpredictable behavior could ensue with
possible hazardous consequences.
4 04315 Rev. C1