DigitalFlow™ DF868 Multipurpose Ultrasonic Liquid Flowmeter Programming Manual (2-Channel)
21
Chapter 1. Programming Site Data
Transit-Time SIGNL Options
2.
Press
[ENT]
to accept the current
Signal Low Limit
value or enter a new value and press
[ENT]
.
The default value for this parameter is 40 and values from –20 to 100 are acceptable. The
E1: LOW SIGNAL
error
message appears when the signal strength falls below the programmed
Signal Low Limit
value. See the
Service
Manual
for a discussion of error codes.
3.
Press
[ENT]
to accept the current
Cor. Peak Limit
value or enter a new value and press
[ENT]
.
The default value for this parameter is 100 and values from 0 to 500 are acceptable. The
E4: SIGNAL QUALITY
error
message appears when the signal quality falls below the programmed
COR. PEAK LIMIT
value. See the
Service
Manual
for a discussion of error codes.
4.
Press
[ENT]
to accept the current
Soun– Limit
value or enter a new value and press
[ENT]
.
The default value for this parameter is 20% and values from 1% to 50% are acceptable. The
E2: SOUNDSPEED
error
message appears when the calculated fluid soundspeed differs from the fluid soundspeed entered in the
SYSTEM
menu by more than the programmed
Soun– Limit
value. See the
Service Manual
for a discussion of error
codes.
5.
Press
[ENT]
to accept the current
Velocity Low Limit
value or enter a new value and press
[ENT]
.
The default value for this parameter is –40.0 ft/sec (–12.142 m/sec) and values from –100 to 100 ft/sec (–30.48 to
30.48 m/sec) are acceptable. The
E3: VELOCITY RANGE
error message appears when the calculated fluid velocity is
less than the programmed
VELOCITY LOW LIMIT
value. See the
Service Manual
for a discussion of error codes.)
6.
Press
[ENT]
to accept the current
Velocity High Limit
value or enter a new value and press
[ENT]
.
The default value for this parameter is –40.0 ft/sec (–12.142 m/sec) and values from –100 to 100 ft/sec (–30.48 to
30.48 m/sec) are acceptable. The
E3: VELOCITY RANGE
error message appears when the calculated fluid velocity
exceeds the programmed
VELOCITY HIGH LIMIT
value. See the
Service Manual
for a discussion of error codes.
7.
Press
[ENT]
to accept the current
Acceleration
value or enter a new value and press
[ENT]
.
The default value for this parameter is 15.0 ft/sec
2
(4.6 m/sec
2
) and values from 0 to 100 ft/sec
2
(0 to 30 m/sec
2
) are
acceptable. The
E6: CYCLE SKIP
error message appears when the calculated fluid velocity changes by more than the
programmed
ACCELERATION LIMIT
value from one reading to the next. See the
Service Manual
for a discussion of
error codes.
8.
Press
[ENT]
to accept the current
Amp. Discrim Low
value or enter a new value and press
[ENT]
.
The amplitude discriminator measures the size of the transducer signal received by the Model DF868. The default
value for this parameter is 14 and values from 0 to 100 are acceptable. The
E5: AMPLITUDE
error message appears
when the amplitude discriminator falls below the programmed
AMP. DISCRIM LOW
value. See the
Service Manual
for
a discussion of error codes.