Entering Pipe Data; Special Transducers; Wedge Temperature - GE DigitalFlow GC868 Programming Manual

Entering Pipe Data

Special Transducers

Wedge Temperature

Programming Site Data
PIPE
The submenu permits entry of the transducer and pipe
specifications. To program this menu, complete the following steps:
1. At the User Program screen, press
submenu.
2. Enter the Transducer Number (normally engraved on the head of
the transducer). Press
complete the steps below. Otherwise, proceed to step 3.
IMPORTANT:
Special transducers, which have no engraved
number on the head, are rarely used. Examine the
transducer head carefully for a number.
a. Assign a number between 91 and 99 to the Special Transducer
[ENT]
and press . (The meter will only accept values from 1 to
199.)
[F2]
b. Press to select Shear wave as the Transducer Type.
Note: While three choices are available (Rayleigh, Shear wave or
wetted transducers), the GC868 is designed for use with Shear
wave clamp-on transducers. Consult the factory before
selecting Rayleigh or wetted transducers.
[F1]-[F4]
c. Use the [→] and
special transducer. The meter can not transmit an excitation
voltage at the transducer's natural frequency without this data.
[F1]-[F4]
d. Press to select the Wedge Material. The available
VHT
options include
HT
temperature), (high temperature) and
data sheet supplied with your transducer to determine the
appropriate setting.
e. Use the numeric keys to enter the Wedge Angle (the angle of
the ultrasonic transmission) supplied by the factory in degrees
[ENT]
and press .
•
OTHER
If you selected
the Wedge Soundspeed in ft/sec or m/sec supplied by GE and
[ENT]
press . The meter proceeds to step 5.
3. Use the numeric keys to enter the Wedge Temperature supplied by
the factory in deg F and press
[F3]
to program the
[ENT].
If there is no engraved number,
keys to select the Frequency of the
(very high temperature),
OTHER
in step d, use the numeric keys to enter
[ENT]
.
April 2008
PIPE
MT
(medium
. Refer to the
1-13