GE PT878 User Manual

Chapter 9. Diagnostics and Troubleshooting

Transport® Model PT878 Portable Liquid Flowmeter User’s Manual

207

Xmit Corr 

Up

Displays raw upstream signal correlated 
with transmit signal.

N/A

N/A

Xmit Corr 

Dn

Displays raw downstream signal correlated 
with transmit signal.

N/A

N/A

Cross Corr

Displays transmit upstream signal corre-
lated with transmit downstream signal.

N/A

N/A

SS up

Displays the signal strength for the 
upstream transducer.

50-80

<50

SS do

Displays the signal strength for the 
downstream transducer.

50-80

<50

PEAK%

Displays the Percent of Peak. Set to -40 by 
default. To change see page 182.

N/A

N/A

Qup

Displays the signal quality for the upstream 
transducer. 

±300 or 

higher

 between 

±100

Qdown

Displays the signal quality for the down-
stream transducer.

±300 or 

higher

between 

±100

NFup

Displays the normalization factor for the 
upstream transducer.

 0.85 -   1.0

<0.85

NFdn

Displays the normalization factor for the 
downstream transducer.

0.85 - 1.0

<0.85

TEMPs

Displays the temperature for the supply 
input (energy measurement).

N/A

N/A

TEMPr

Displays the temperature for the return 
input (energy measurement).

N/A

N/A

Ts - Tr

Displays the difference between the tem-
perature for supply input and the tempera-
ture for return input (energy measurement).

N/A

N/A

DENSs

Displays the density for the supply input. 
(Energy measurement.)

N/A

N/A

DENSr

Displays the density for the return input. 
(Energy measurement.)

N/A

N/A

DELTh

Displays the delta enthalpy, or difference 
between the supply and return enthalpy 
(enthalpy is a measure of energy contained 
in the fluid.) (Energy measurement.)

N/A

N/A