
DigitalFlow™ DF868 Multipurpose Ultrasonic Liquid Flowmeter Programming Manual (2-Channel)
25
Chapter 1. Programming Site Data
TransFlection SIGNL Options (cont.)
13.
Press
[ENT]
to accept the current
# of Errors Allowed
, or use the numeric keys to enter a value between 0 and 16
and press
[ENT].
Use this option to enter the number of errors the DF868 can record before it displays an error message. The default
value is 6.
Table 14 on page 28 lists default values and limits for
SETUP
parameters.
1.6.5.2
Setting Response Time
Use this option to specify the number of readings that occur before the meter will respond to a step change in flow
rate. In general, the smaller the number of readings, the less steady the display will appear. Complete the following
steps to set the response time:
1.
Press
[F2]=AVRG to enter the V Averaging submenu.
2.
At the
Response Time
prompt, use the [
and
[F1]-[F4]
keys to select the desired option. The available
response time options are
1, 2, 5, 10, 30, 60, 15 min and STATS
. For best results, select
STATS
(statistics), as this
increases the response time under steady flow conditions while still allowing a rapid response to changes in flow
rate.
1.6.5.3
The INIT Option
Use this option to initialize (reset) all of the parameters within the
SETUP
menu to their default values. Complete the
following steps to reset all of the parameters:
1.
Press
[F3]=INIT to enter the Default Setup submenu.
2.
Press
[F1]
to keep the current values or press
[F2]
to reset all values to their
Default
settings.
1.6.5.4
Accessing Advanced Features
The
ADVAN
option enables you to access the more advanced features of the DF868. In this option you can perform
five functions:
•
calculate the kinematic viscosity (KV) based on signal strength (SS) or activate temperature compensation by
applying a temperature vs. viscosity table (see the next page)
•
enter a table of K-factors (based on velocity or Reynolds number) that compensates for non-linear flow rates
(see the next page)
•
enable mass flow (calculated for static fluid density) (page 26)
•
select the size of the transducer transmission signal (page 26)
•
actively compensate for widely varying signal delays (page 27)
1.
At the
SETUP
window, press
[F4] to select Advanced Features
.
2.
Use the
[F1]-[F4]
and [
and [
keys to select the desired option.