Thermo Scientific HB-S200, User Manual

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Sarasota 200 Ultrasonic Multipath
Flowmeter
Section 5, COMMISSIONING Page 5-1 Thermo Fisher Scientific
COMMISSIONING
5 COMMISSIONING
5.1 Site dimensions
If this information is not already available, it will be necessary to carry out a dimensional
survey of the installed transducers and the channel in order to programme the flowmeter. It
will be necessary to determine the following:-
•
length, angle and the heights of each path,
•
average cross section profile, if different from that defined by the paths,
•
mean bed level (MBL),
•
height offset of the level transducers and,
•
relationship between the local heights and a fixed datum if not working with respect to
MBL.
This manual does not cover surveying techniques. However, for small sites physical
measurements are easily carried out by means of a tape measure. Angles may be
determined by triangulation.
5.2 Powering up
Check that the flowmeter has been connected up correctly and the cards are plugged in
securely.
Load the GAFA software into a PC and plug in to the PC serial port.
Switch on the power source.
The LCD will be activated though the display may be meaningless at this stage.
5.3 Programming
The flowmeter should be programmed via the PC as described in Appendix 1: GAFA
Screens. The programme details should be recorded to become part of Appendix 4: Site
Data.
Appendix 4: Site Data is a useful checklist covering all programmed data, some of which may
not be required for any particular site.
5.4 Setting up
5.4.1 Velocity paths
Select “Manual” and set the gain and voltage for each path to obtain a clean waveform and
detection point.
5.4.2 Ultrasonic
levels
Select “Manual” and set the gain and voltage for each level to obtain a clean waveform and
detection point.