GE DigitalFlo XGM868i Service Manual page 69

Option Bar
Velocity Displays the flow velocity.
Volumetric Displays the volumetric flow.
FWD Total Displays the forward totalized volume flow.
REV Total Displays the reverse totalized volume flow.
TIME Displays the total flow measurement time.
MDOT Displays the mass flow.
FWD Mass Displays the forward totalized mass flow.
REV Mass Displays the reverse totalized mass flow.
UP Sig Strength Displays the signal strength for the upstream transducer.
DN Sig Strength Displays the signal strength for the downstream transducer.
Soundspeed Displays the measured speed of sound in the gas.
UP Transit Displays the upstream ultrasonic signal transit time.
DN Transit Displays the downstream ultrasonic signal transit time.
Displays the transit time difference between the upstream and
Delta T
downstream signals.
K(Re)*MultiK*KFactor K factor, based on the Reynolds number.
PEAK% Displays the percentage of peak (set to +50 by default).
UP Signal Q Displays the signal quality for the upstream transducer.
DN Signal Q Displays the signal quality for the downstream transducer.
UP Amp Discrim Displays value for signal amplitude of upstream transducer.
Displays the value for the signal amplitude of the
DN Amp Discrim
downstream transducer.
UP DAC Count Displays the AGC DAC count for the upstream gain setting.
DN DAC Count Displays the AGC DAC count for the downstream gain setting.
UP+-Peak Displays signal peaks for the upstream transducer.
DN+-Peak Displays signal peaks for the downstream transducer.
Temperature Displays the gas temperature (from 0/4-20 mA input).
Pressure Displays the gas pressure (from 0/4-20 mA input).
Act. Vol Displays actual volumetric flow.
Std. Vol Displays standard volumetric flow.
Displays Skan transit time upstream.
1
UP Transit S
Displays Skan transit time downstream.
1
DN Transit S
Displays Skan Delta T.
1
Delta T S
Displays Measure transit time upstream.
1
UP Transit M
Displays Measure transit time downstream.
1
DN Transit M
Displays Measure Delta T.
1
Delta T M
Vinst Displays the instantaneous velocity.
DigitalFlow™ XGM868i Service Manual
Table 10: Available Measurement Parameters
Description
1
available only if Burst Mode = S/M
Appendix B. Calibration and Testing with PanaView
Good
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
50–75
50–75
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
>1200
>1200
24 ± 5
24 ± 5
N.A.
N.A.
100-2300
100-2300
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
Bad
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
<50 or >75
<50 or >75
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
–400 to +400
–400 to +400
<19 or >29
<19 or >29
N.A.
N.A.
<100 or >2300
<100 or >2300
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
61