Scope of this guide, Starting-up – Bronkhorst IQ+FLOW Quick Start User Manual

Page 3

9.17.074

SCOPE OF THIS GUIDE

FLOW

digital mass flow/pressure meters and controllers for gases are one of the smallest chip based instruments

of its kind. IQ

FLOW® mass flow meters/controllers can be applied for measuring and fast control of gas flows up to

5000 mln/min, for applications with pressure conditions up to 10 bar (145 psi) and temperatures between 5 and 50 °C
(41 to 122 °F). IQ

FLOW

pressure meters/controllers can be applied for pressure ranges from 0,01…0,5 bar up to

0,2…10 bar. The instruments can either be operated in analog or digital mode (RS232 or RS485).

This guide covers the short-form instructions for IQ

FLOW

instruments regarding:

start-up
mounting
zeroing
operation

This manual will help you start-up your IQ

FLOW

in 10 steps. More information can be found in documents listed below:

Instruction manual IQ

FLOW

series

(document nr. 9.17.045)

Consists information for basic and advanced operation, more detailed product information and instructions for

troubleshooting
FlowPlot Manual

(document nr. 9.17.030)

Hook-up diagram IQ

FLOW

Single-channel

(document nr. 9.16.101)

Hook-up diagram IQ

FLOW

Multi-channel

(document nr. 9.16.090)

These documents can be downloaded from the website: www.bronkhorst.com or can be sent by e-mail on request.

Starting-up

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

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. Check test-pressure

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.

3. Check if system piping is clean

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.

4a. Mount / install instrument properly
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 step 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.

4b. Compression type fittings

For leak tight installation of compression type fittings make sure that the tube is inserted up to the shoulder in the

fitting body and that no dirt or dust is present on tube, ferrules or fittings. Tighten the nut finger tight; while

holding the instrument, then tighten the nut one turn.

4c. 10-32 UNF fittings

Tighten the 10-32 UNF fittings according to the instructions of the supplier

of the fittings.

Only use 1/16” tubing with a straight and clean cut without burrs to ensure

leak tightness. Preferably deburr the tubing prior to installation. A new

ferrule connection must be made for each new adapter to ensure leak-

tightness and minimum dead volume, due to variances in the adapter

dimensions.

4d. Mounting downported instruments

For downported instruments make sure that the seals are present at the bottom, that the surfaces are undamaged

and that they are dry and free from dirt or dust.

5. Leak check

Check the system for leaks before applying pressure. Especially if toxic or other dangerous fluids are used!

6. Electrical connection
Electrical connections must be made with a standard cable or according to the IQ

FLOW® hook-up diagram. These

diagrams can be found on the “Documentation and software tools” CD-ROM and at the download section of
www.bronkhorst.com. IQ

FLOW® instruments are powered with +15…+24 Vdc.

7a. Analog operation (For Single-channel versions only):
For analog operation refer to the “Hook-up diagram IQ

FLOW®” or use an

RJ45 loose-end cable (7.03.419) to connect the required signals.

7b. Digital RS232 operation

Digital operation over RS232 can be established when

using the following setup. Using a RS232 cable or a USB-

RS232 converter with a PC will allow you to use (free)

Bronkhorst® software for Windows, such as FlowDDE and

FlowPlot.