Panametrics DigitalFlow GC868, Руководство по обслуживанию, Страница: 31 / 64

DigitalFlow™ GC868 Service Manual (1 and 2-Channel) 3-2
Chapter 3. Diagnostics
Table 3-1 below lists the available diagnostic parameters for the Model GC868. The
first column in the table shows the parameter as it appears on the option bar, while
the second column shows the parameter as it appears in the prompt area after it
has been selected.
Table 3-1: Available Diagnostic Parameters
Option
Bar Screen Display Description Good Bad
SS up UP Sig Strength Displays the signal strength for
the upstream transducer.
58–68 <58 or >68
SS do DN Sig Strength Displays the signal strength for
the downstream transducer.
58–68 <58 or >68
SNDSP Soundspeed Ft/s Displays the measured sound
speed of the fluid.
N.A. N.A.
Tup UP Transit S usec Displays upstream transit time of
the ultrasonic signal in
microseconds.
N.A. N.A.
Tdown DN Transit usec Displays downstream transit time
of ultrasonic signal in
microseconds.
N.A. N.A.
DELTA DeltaT usec Displays the difference in µsec
between upstream and
downstream transit times.
N.A. >30 nsec
REYN# Reynolds # Displays the Reynolds number. <100,000,00
0
N.A.
Tot K K(Re)
MultiK*KFactor
Displays the combination of all K
factors.
N.A. N.A.
PEAK% PEAK% Displays the percentage of peak
(set to +80 by default).
N.A. N.A.
Qup UP Signal Q Displays the signal quality for the
upstream transducer.
Š 1,200 –400 to +400
Qdown DN Signal Q Displays the signal quality for the
downstream transducer.
Š 1,200 –400 to +400
AMPup UP Amp Discrim Displays the value for the
upstream transducer amplitude
discriminator.
24 ± 5 <19 or >29
AMPdn DN Amp Discrim Displays the value for the
downstream amplitude
discriminator.
24 ± 5 <19 or >29
CNTup UP DAC Counts Displays the AGC DAC count for
upstream gain setting.
N.A. N.A.
CNTdn DN DAC Counts Displays the AGC DAC count for
downstream gain setting.
N.A. N.A.
P#up UP +- Peak Displays signal peaks for the
upstream transducer.
100-2,300 <100 or >2,300
P#dn DN +- Peak Displays signal peaks for the
downstream transducer.
100-2,300 <100 or >2,300
TEMP Temperature deg F Displays the gas temperature
(0/4-20 mA or RTD input).
N.A. N.A.
PRES Pressure psia Displays the gas pressure
(0/4-20 mA or RTD input).
N.A. N.A.