Bronkhorst IQ+FLOW (from 01-07-2013) - Manual (Page 7)

Bronkhorst High-Tech B.V.
IQ+FLOW 7 9.17.045
2 Starting up
2.1 Check properties
1. Check IQ + FLOW® 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(F/M) - Gas Flow IQP - Pressure
Output/Setpoint
A – 0…5 Vdc
B – 0…10 Vdc
F – 0…20 mA
G – 4…20 mA
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.