Manual – Starflow QSD Model 6527B and 6537A
Unidata Manual - 6527B and 6537A Starflow QSD User Manual 17 01 2020.docx
Page 17
5.2 Instrument Mounting
A typical installation is in a pipe or culvert with diameters between 150mm and 2000 mm. The
Starflow QSD should be located near the downstream end of a straight and clean culvert, where non-
turbulent flow conditions are maximised. The mounting should ensure the unit sits right on the bottom
to avoid debris catching beneath it.
It is recommended that in open pipe situations that the instrument is situated 5 times the diameter
from the opening or discharge. This will allow instrument to measure the best possible laminar flow.
Keep the instrument away from pipe joints. Corrugated culverts are not suitable for Starflow QSD
instruments.
Diagram showing instrument 5 diameters in from pipe opening
In culverts the sensor can be mounted on a stainless steel band that is slipped inside the pipe and
expanded to lock it in position. In open channels special mounting brackets may be required.
The Model 6705 Expanding Band kit allows you to install a Starflow QSD instrument into a pipe.
Kit design is modular, allowing it to fit into any size pipe. The band is flexible enough to fit irregular
shapes, such as ovoid (egg shaped) sections.
All components are made from stainless steel and the band fittings are 100mm wide to fit the
standard Starflow QSD mount.
Although pipes come in standard diameters, their dimensions are not always accurate. This means
that an expanding band system must allow the installer to make adjustments on site. To achieve this,
the Model 6705 system is made so that general assembly can be done in the workshop, whilst
adjustments can be made in the field with hand tools. An expanding turn-buckle locks the band into
the pipe.
To determine what installation hardware is needed for a pipe installation the pipe diameter needs to
be known.
Pipe Diameter
Clamp
Bands
Joiners
Up to 600mm
6705A
6705D
-
600 - 1200mm
6705B
2 x 6705D
1
1200 - 1800mm 6705B
3 x 6705D
2
