Chapter 1. Programming Site Data
8
Model CTF878 Programming Manual
1.5.2
Parameters for Special Transducers
Note:
The factory will supply the information required below with a special transducer / receiver option.
The user must enter the appropriate transducer / receiver operating frequency range.
IMPORTANT:
The CTF878 flowmeter and the transducers have the same fixed frequency band of operation defined by
the customer's application. The frequency printed on the transducers represents a frequency band of
operation and does not always match the up or down frequencies.
1.
From the Transducer prompt, press the [
] key to reach the Frequency Up (
Frq Up
) prompt, and press
[ENTER]
.
2.
A drop-down list of thirty-six frequencies opens, ranging from 0.222 to 8.00 MHz. Scroll to the correct frequency,
and press
[ENTER]
.
3.
Repeat the same selection process for the Frequency Down
(
Frq Dn
) prompt.
Next, you must enter the transducer wedge angle (Wedge Ang) and wedge soundspeed (Wedge SS).
4.
Scroll to the appropriate text box and press [
ENTER
].
5.
Type in the value (provided by the factory).
Note:
If you enter an incorrect numeric value, press the
[
]
key to erase the last digit entered.
6.
Once the value has been entered, press [
ENTER
] and proceed to
Entry Confirmation
below.
1.5.3
Entry Confirmation
•
To confirm the entries and return to Operate mode, press
[F3]
(OK).
•
To leave the window without confirming the entries, press
[F2]
(Cancel) or the
[ESC]
key.
In either case, the CTF878 returns to Operate Mode.
1.6
Entering Pipe Parameters
To enter the Pipe option, scroll to the Pipe tab on the Program Menu and press
[ENTER]
. (From the Transducer
window, you can scroll back up to the Transducer tab and press the [
] arrow key to reach the Pipe window, and
press
[ENTER]
.) The screen appears similar to Figure 9 below. To step through each parameter, press the [
] key.
See the Program Menu Map, Figure on page 29.
Note:
Refer to the installation reference
Sound Speeds and Pipe Size Data (914-004)
for additional information
about pipe sizes and sound speeds.
Figure 9: Pipe Option Window
Pipe
Transducer
Fluid Path
Other
5
Material
OK
Cancel
OD, mm
15.71
ODxPI, mm
Wall, mm
2
Sound Speed
600 m/s
Transducer/Pipe
Pipe