Teledyne T400, Руководство пользователя, Страница: 91 / 177

083730400A DCN8130 Teledyne API – Model T400 O
3
Analyzer 89
4.1.6 D
ATA
R
ECORDING
D
EVICES
A strip chart recorder, data acquisition system or digital data acquisition system should be
used to record data from the serial or analog outputs.
•
If analog readings are used, the response of the recording system should be
checked against a NIST traceable voltage source or meter.
•
Data recording devices should be capable of bi-polar operation so that negative
readings can be recorded.
•
For electronic data recording, make use of the internal data acquisition system (DAS)
by setting up the Data Logger.
4.2 CALIBRATION PROCEDURES
Check that the pneumatic connections for the specific instrument configuration are as
instructed in Section 2.3.2.
Verify/change (if needed) the settings as follows:
• User Units (unit of measure): PPB (Setup>Vars>User Conc Units)
•
Min and Max Concentration Range (Max should be highest concentration
expected to measure) (Setup>Analog Outputs>Analog Output[#], Signal Out,
[Gas] Concentration)
• Range Mode: SNGL (Setup>Vars>Range Mode)
Note
Tips for Setting the Expected Span Gas Concentration:
• When setting expected concentration values, consider
impurities in your span gas source.
•
The expected span gas concentration should be 80% of
the reporting range of the instrument.
To calibrate or to perform a calibration check for basic configuration instruments, see
Section 4.2.1.
To calibrate or to perform a calibration check for instruments with valve options, see
Section 4.2.2.
To perform automatic calibration check for instruments with the internal span gas
generator, see Section 4.3.
4.2.1 C
ALIBRATION AND
C
HECK
P
ROCEDURES FOR
B
ASIC
C
ONFIGURATION
Although this Section uses the Calibration menu for both check and actual calibration, a
check does not require the Calibration menu. Instead, while in Home page, simply flow
the zero air or the applicable span gas through the Sample port, and check the reading
after the Stability falls below 1.0 PPB (either in the gas graph or in the Dashboard).
Otherwise, follow the steps presented in Sections 4.2.1.1 and 4.2.1.2.