Panametrics Sentinel LCT, User Manual

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Sentinel LNG User’s Manual 201
Chapter 9. Troubleshooting
9.3 Displaying Diagnostic Parameters (cont.)
Option Bar Description Good Bad
Delta-T[ns]
Displays the transit time difference between the upstream and
downstream signals.

1 nsec
>1 nsec
Amp Up
Displays the value for the signal amplitude of the upstream
transducer.
24 ± 5 <19 or >29
Amp Dn
Displays the value for the signal amplitude of the downstream
transducer.
24 ± 5 <19 or >29
T Up [µs] Displays upstream ultrasonic signal transit time. N.A. N.A.
T Dn [µs] Displays downstream ultrasonic signal transit time. N.A. N.A.
Gain Up [dB] Displays upstream gain in dB. N.A. N.A.
Gain Dn [dB] Displays downstream gain in dB. N.A. N.A.
Signal Up Displays signal strength for the upstream transducer. 50-75 <50 or >75
Signal Dn Displays signal strength for the downstream transducer. 50-75 <50 or >75
Thresh Up [%]
Displays the value at which Sentinel LNG detects signal arrival
time for the upstream transducer.
-100 - +100 <-100 or >100
Thresh Dn [%]
Displays value at which Sentinel LNG detects signal arrival
time for the downstream transducer.
-100 - +100 <-100 or >100
Norm Factor Displays the normalization factor. 0.85 - 1.0 <0.85
P# Up Displays signal peaks for upstream transducer. 100-924 <100 or >924
P# Dn Displays signal peaks for downstream transducer. 100-924 <100 or >924
Quality Up Displays signal quality for upstream transducer.

1200
–400 to +400
Quality Down Displays signal quality for downstream transducer. 
1200
–400 to +400
Reynolds # Displays the Reynolds number. N.A. N.A.
k(Re) K factor, based on the Reynolds number. N.A. N.A.
Cycle Time [ms] Time for the reading cycle to complete. N.A. N.A.
KFactor Meter K calibration factor 0.5-2.0 <0.5 or >2.0
#Errors Number of errors present.
0<Programm
ed Error Limit
>Programme
d Error Limit