Product Specifications; Pressure Rating; Model Key - BRONKHORST u-FLOW Series Instruction Manual

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2. Product specifications

Before installing the µ-FLOW and LIQUI-FLOW, check that the functional and technical properties of the product match
your requirements. If you have a question about the product or if you find the product does not meet the specifications
as ordered, do not hesitate to contact your Bronkhorst representative. See section Service for contact information.
The serial number label shows some essential technical specifications of the product as ordered (note that the image
does not necessarily reflect the actual specifications of your instrument):
• Serial number
Type number
•
• Flow rate
Medium
•
• Pressure
• Operating temperature
• Optional: valve type (N.C. - Normally Closed / N.O. - Normally Open)
The model key on contains more detailed information about the technical properties of the product as ordered.
Where applicable, follow the directions on any additional labels in order to ensure a safe working environment and to
comply with the regulations applicable to the product and its operating environment.
Avoid condensation on the sensor tube. Liquids entering the instrument with a lower temperature than
the dew point, may harm the instrument's functionality.

2.1. Pressure rating

Bronkhorst ®
pressure and outboard leak tested to at least 2 * 10
• The test pressure is specified on the device with a red label; if this label is missing or if the test
pressure is insufficient, the device must not be used and should be returned to the factory.
Before installation, make sure that the pressure rating is within the limits of the normal process
•
conditions and that the tested pressure is in accordance with the safety factor of your application.
Disassembling the device and/or replacing parts will invalidate the test pressure and leak test
•
specification.

2.2. Model key

The model key on the serial number label contains information about the technical properties of the instrument as ordered.
The specific properties can be retrieved with the diagrams below.
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9.17.161 µ-FLOW & LIQUI-FLOW Instruction Manual L01, L13(I), L23(I), L13V12, L23V12
Bronkhorst
instruments are pressure tested to at least 1.5 times the specified operating
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mbar l/s Helium.
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