Panametrics DigitalFlow XGS868i, Руководство для стартапов, Страница: 44 / 86

Chapter 2. Initial Setup
36 DigitalFlow™ XGS868i Startup Guide
2.7 Entering Transducer and Pipe Parameters
Enter the transducer and pipe parameters via the PIPE submenu.
1. From the Channel PROGRAM menu, scroll to the PIPE
option and press
[Enter] .
2. The first prompt asks for the Transducer Number.
• For a standard transducer, use the arrow keys to enter the number engraved on the transducer head, and
press [Enter].
• If there is no number engraved on the transducer head, press the right arrow key to scroll to the STD option, and
use the up and down arrow keys to change to SPEC. Then use the arrow keys to enter an assigned number
(from 91 to 99), and press [Enter].
IMPORTANT: Special transducers, which have no engraved number on the head, are rarely used. Examine the
transducer head carefully for a number.
• If you entered the number for a standard transducer, proceed to the
Pipe OD prompt in step 5.
• If you entered the number for a special transducer, proceed to step 3 below.
2.7.1 Special Transducers
3. Scroll to the transducer
Frequency (supplied by the factory) and press
[Enter].
Note: The frequency is required to transmit an excitation voltage at the transducer’s natural frequency.
4. Enter the special transducer Tw (time delay) value (supplied by the factory) and press [Enter].
Tw is the time required for the transducer signal to travel through the transducer and its cable. This time delay
must be subtracted from the transit times of the upstream and downstream transducers to ensure an accurate
measurement.