Bronkhorst IQ+FLOW (till 01-07-2013) - Manual (Page 6)

9.17.045 page 6
2. Starting up
2.1 Check properties
Before installing it is important to read the attached label and check:
- Instrument type:
• gas (IQF) red label or
• pressure (IQP) yellow label
- Flow rate
- Fluid to be measured / controlled
- Up- and downstream pressure
- Input and output signals
- Temperature
IQ + FLOW® instruments are designed for dry, clean, inert and non-explosive gases. Do not use the
instruments for gases that do not belong to this category.
2.2 Rated pressure test inspection
The tested pressure is stated on the instrument with a red-coloured
sticker. Before installation, make sure that the test pressure is in
accordance with normal safety factors for your application.
If there is no Pressure Testing Sticker on the device or if the test
pressure is incorrect, the instrument should not be mounted in the
process line and be returned to the factory.
2.3 Check piping
For reliable measurement always make sure that the fluid stream is
clean. Use filters to ensure a clean, moisture- and oil- free gas stream.
Recommended pore-size: 7 µm. If back flow can occur, a downstream
filter is recommended too. Be aware of the pressure drop caused by
using filters.
2.4 Install system
For IQ + FLOW® the upright position is preferred. When using an
IQ + FLOW® instrument in up- or downward position make sure to
“zero” the instrument prior to use (see section 2.10). Avoid
installation in close proximity of mechanic vibration and/or heat
sources. The housing of the instrument is according to class IP40,
which means that the instrument is suitable for indoor (dry)
applications, like laboratories or well protected (OEM) housings.
Install the IQ + FLOW® instrument in the line, in accordance with the
direction of the FLOW arrow. The arrow for flow direction is
indicated on the body of the instrument. If applicable follow the
guidelines of the supplier of the fittings. Special types of fittings are
available on request.
IQ(F/M) - Gas Flow IQP - Pressure
10