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Specifications Model 7500ZA
Teledyne Analytical Instruments 96
Correction formula:
C : Sample gas concentration after O
2
correction.
Cs : Measured concentration of sample gas.
Os : Measured O
2
concentration (Limit setting:
1 to 20% O
2
)
On : Reference O
2
concentration (value
changeable by setting 0 - 19% O
2
).
Average value after O
2
correction and O
2
average value
calculation:
The result of O
2
correction or instantaneous
O
2
value can be output as an average value
over the preset period of time.
Moving average method is used. Sampling
interval is 30 seconds (Output is updated
every 30 seconds.
Update is the averaged value of the most
recent elapsed averaging time period.)
Averaging time period is settable from 1-59
minutes (in increments of 1 minute) or 1-4
hours (in increments of 1 hour).
Average Value Resetting:
The above-mentioned output of average
value is started from the initial state by
opening the average value resetting input
terminals after short circuiting for 1.5 sec
or longer.
Output is reset by input voltage and the
terminal circuit.
Communication Function:
RS-485 (9pins D-sub connector)
Half-duplex bit serial
Cs
Os21
On21
C