GE DigitalFlow DF868 User Manual

Programming Site Data 1-29
March 2008
TransFlection 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 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.)
4. 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.
5. Press
[ENT] to accept the current Gain Setting, or press [F1] to
lower the received signal or
[F2] to boost the received signal.
The Gain Setting option lets you select either low or high (default)
gain for the selected channel. The gain setting either boosts or lowers
the received signals. Normally the gain setting is HIGH; however, if
the signal is virtually noise-free, the gain setting can be switched to
LOW.
6. At the Flow Direction prompt, press
[F1] to specify absolute flow
velocity,
[F2], UP (for upstream) if the transducers face against the
flow, or
[F3], DOWN (for downstream), if the transducers face with
the flow.
Use this option to specify the direction in which the fluid is flowing.
While the DF868 normally measures the absolute value of the flow
velocity, you can specify in which direction the transducers face by
selecting UP or DOWN.
Note: Selecting UP or DOWN cuts the TransFlection measurement
range in half from 1 to 30 ft/s (0.3 to 9 m/s) to -15 to +15 ft/s
(-4.6 to +4.6 m/s).

GE DigitalFlow DF868 Specifications

General

Brand	GE
Model	DigitalFlow DF868
Category	Measuring Instruments
Language	English