GF PORTAFLOW 330, Инструкция по эксплуатации

Страница: 23 / 56

Operating Procedures Instruction manual
22
Attaching and connecting the transducers
18. Fit the designated sensors to the pipe using the appropriate guide rails. Take great care
to set the separation distance as accurately as possible.
19. Connect the red and blue coaxial cables between the sensors and the test instrument,
ensuring that the red connector on the instrument is connected to the ‘upstream’
sensor.
Taking a flow reading
20. Once the transducers have been fitted and
connected, press the ENTER key on the
ATTACH SENSORS screen.
21. This will take you to the FLOW READING
screen via a signal-checking screen (shown
here).
22. Check that the indicated signal strength on the
left of the screen is at least 2 bars (ideally 3 or
4). If less than 2 bars are shown it indicates
there could be a problem with the transducer
spacing, alignment or connections; or it could
be due to an application problem.
23. Qxx.xx% indicates the signal quality and
should have a value of 60% or greater.
Flow monitoring
The FLOW READING screen is the one most used during normal monitoring operation. It
shows the instantaneous fluid flow together with totalised values (when enabled). In this
mode you can select the flow rate measurement units by pressing keys 7 (litres), 8 (Gallons,
Barrels) or 9 (m³), or change the display to show velocity by pressing key 4.
If the flow reading exceeds a value of +/-9999 in the current units then a *10 multiplier will be
displayed above the units and the value displayed will be a tenth of the actual value. Similarly
a * 100 and *1000 may be displayed on very large flow rates.
There are limitations on the use of these larger flow values with regards to logging of data
and setting the current and pulse outputs. If the flow reading is less than 32000 m³/hour then
the value can be logged and downloaded via a USB memory key.
7.3 Using the System at a Regularly Monitored Location
Setting up the Portaflow system using the Quick Start method is easy and the recommended
method to use in a ‘one-off’ situation. But if you have a site location that you want to monitor
on a frequent basis it is better to set up a named ‘Site’ for that location so that you can recall
it when needed and so avoid the need to re-enter the site details every time you want to install
the equipment there.