Bronkhorst LIQUI-FLOW mini Quick Start User Manual

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4a. Mount / install instrument properly

For LIQUI-FLOW

mini the upright position is preferred. When using a

LIQUI-FLOW

mini instrument in up- or downward position make sure to

“zero” the instrument prior before 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 LIQUI-FLOW

mini 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. 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 tolerances in the adapter dimensions.

Location

Install the instrument on a stable position and assure that mechanical vibration, heat source influence and draft

are reduced to a minimum.

5. Leak check

Check the system for leaks before applying (fluid) pressure. Especially if toxic, explosive or other dangerous fluids

are used!

6. Electrical connection

Electrical connections must be made with a standard cable or according to the LIQUI-FLOW

mini 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. LIQUI-FLOW

mini instruments are powered with +15…+24 Vdc.

7a. Analog operation:

For analog operation refer to the “Hook-up diagram LIQUI-FLOW

mini” or

use an RJ-45 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 RS232 or USB-RS232 convertor with

a PC will allow you to use (free) Bronkhorst® software for

Windows, such as FlowDDE and FlowPlot.