Entering Setup Data - GE DigitalFlow GF868 Programming Manual

Chapter 1. Programming Site Data

1.6.5 Entering Setup Data

The signal limits and response times for the Model GF868 are specified via the
submenus:
• SIGNL
- set the parameters related to the transducer signal
•
AVRG
- specify the response of the meter to step changes
•
INIT
- initialize all parameters to default values.
• ADVAN -
set up mass flow and enter a table of K factors
SETUP
To enter the submenu, press [ and
Remember to record all programmed data in Appendix B, Data Records.
1.6.5a Setting Signal Limits
Use this option to set the limits for the incoming signal and other parameters affecting the transducer signal. For
example, the programmed signal strength low limit may be used to determine the trigger point for an alarm. Table 5 on
page 19 summarizes the default values and limits for parameters in this menu.
CAUTION!
Only after consultation with the factory, complete the following steps to enter the signal parameters:
[F1] = SIGNL
1. Press [ and
[ENT]
2. Press to accept the current Signal Low Limit value or enter a new value and press
accept values from –20 to 100.)
The default value for this parameter is 20. The
below the programmed
Note: See the Service Manual for a discussion of error codes.
[ENT]
3. Press to accept the current Cor. (Correlation) Peak Limit value or enter a new value and press
The default value for this parameter is 100 and values from 0 to 500 are acceptable. The
message appears when the signal quality falls below the programmed
[ENT]
4. Press to accept the current Velocity Low Limit value or enter a new value and press
The default value for this parameter is –300.0 ft/sec (–85 m/sec) and values from –500 to 500 ft/sec (–150 to 150
m/sec) are acceptable. The
VELOCITY LOW LIMIT
programmed
16
[F1]
The SIGNL default settings are suitable for most applications. Before changing
any of these parameters, consult the factory.
to enter the SIGNAL submenu.
E1: LOW SIGNAL
SIGNAL LOW LIMIT
value.
E3: VELOCITY RANGE
error message appears when the calculated fluid velocity is less than the
value.
Channel PROGRAM
at the
error message appears when the signal strength falls
COR. PEAK LIMIT
DigitalFlow™ GF868 Programming Manual (2-Channel)
SETUP
submenu. It includes three
prompt, and refer to Figure 12 on page 88.
[ENT]
. (The meter will only
E4: SIGNAL QUALITY
value.
[ENT]
[ENT]
.
error
.