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The use of the analyzer is simplified by the symbol keys with direct access to the most important functions.
Navigation through the various menu screens is easy and intuitive.
Gas extraction pump
The sample pump located inside the instrument is a DC-motor-driven diaphragm pump, powered by the
instrument, and is such as to obtain optimal flow of the sampled gas being analyzed; an internal sensor that
measures the flow allows to:
- Keep the flow rate of the pump constant
- Check the efficiency of the pump
- Check the degree of clogging/dirtiness of the filters
Measurement sensors
The instrument uses precalibrated gas sensors of the long-lasting FLEX-Sensor series for measuring oxygen (O
),
2
carbon monoxide CO (compensated in hydrogen H
), nitrogen oxide (NO), nitrogen dioxide (NO
) and sulphur
2
2
dioxide (SO
). An automatic internal device dilutes the concentration of CO when the instrument measures high
2
concentrations. The diluting system also allows the CO sensor measuring range to be extended up to
100,000 ppm (for full scale 8,000 ppm sensor). The valve for the optional automatic fast autozero lets the operator
turn the instrument on with the probe inserted in the flue. Up to 4 alarms can be programmed with visual and
acoustic warning for the same number of measuring parameters.
The measuring sensors are the electrochemical type.
The Factory recommendation is that the instrument should be calibrated at least once a year by an authorized
laboratory to issue a calibration certificate. When the sensors are drained they can be replaced easily by the user
without having to send the instrument away and without complicated calibration procedures requiring sample
mixtures as they are supplied already calibrated.
E Instruments does, however, certify measurement accuracy only when a calibration certificate has been issued
by its own laboratory or by an authorized laboratory.
Pressure sensor
The device is internally provided with a piezoresistive differential pressure sensor to measure the draft
(depression) of the chimney, according to UNI 10845, for the tightness test of the piping and possible for other
measurements (gas pressure in the network, loss of pressure through filters, etc.).
Fuel types
The device is provided with the technical data of the most common types of fuels stored in its memory. By using
the PC configuration program, available as an optional, it is possible to add combustibles and their coefficients in
order to define up to a maximum of 16 fuels, other than the default ones.
For more details see Annex B.
Smoke measurements
It is possible to enter the smoke values measured according to the Smoke Comparison scale. The instrument will
calculate the average and print the results in the analysis report.
An external smoke pump, available as an optional, must be used to effect this measurement.
Pressure decay test
The instrument can perform the tightness test of a piping according to UNI 7129 and UNI 11137: 2012.
Measuring ambient CO (available soon)
Probe for monitoring the concentration of CO and checking safe conditions in the ambient air or working
environment.
Calibration certificate
The device comes with a traceable calibration certificate compliant with standard ISO/IEC 17025.
Electromagnetic compatibility
The instrument was designed to comply with Council Directive 2004/108/EC governing electromagnetic
compatibility. E Instruments' declaration of conformity may be found in Annex D.
11
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