BRONKHORST®
9.17.061
EL-FLOW
Base
Series Mass Flow Controllers
Page 11
2
Installation Instructions
2.1 Introduction
This chapter discusses how to prepare the system and install an EL-FLOW
Base
mass flow controller.
2.2 Unpacking and inspection
Check the outside packing box for damage incurred during shipment. Should the packing box be
damaged, then the local carrier must be notified at once regarding his liability, if so required. At the
same time a report should be submitted to your distributor.
Carefully remove the equipment from the packing box. Verify that the equipment was not damaged
during shipment. Should the equipment be damaged, then the local carrier must be notified at once
regarding his liability, if so required. At the same time a report should be submitted to your distributor.
Refer to chapter 6, Removal and Return Instructions, about return shipment procedures.
Before installing an EL-FLOW Base it is important to read the attached label and check:
- Flow rate
- Fluid to be measured
- Up- and downstream pressures
- Input/output signal
- Temperature
Do not discard spare or replacement parts with the packing material and inspect the contents for
damaged or missing parts.
2.3 Rated pressure test inspection
Each EL-FLOW
Base
is pressure tested to at least 1.5 times the working pressure of the process
conditions stipulated by the customer, with a minimum of 8 bar.
Pressure testing sticker
Each instrument is helium leak tested to at least 2
10
-9
mbar l/s Helium outboard.
The tested pressure is stated on the flow controller with a RED COLOURED sticker. Check test pressure
before installing in the line.
If the sticker is
not
available or the test pressure is incorrect, the instrument should
not
be mounted in
the process line and be returned to the factory.
2.4 Instrument mounting
The bottom side of an EL-FLOW
Base
consists of two mounting holes for stable mechanical fixation of
the instrument. Refer to the following documents for exact position of the mounting holes.
Dimensional drawing F-201AB, document nr. 7.15.165.
Dimensional drawing F-201CB, document nr. 7.15.166.
Dimensional drawing F-202BB, document nr. 7.15.170.
The preferred mounting position of EL-FLOW
Base
mass flow controllers is horizontal. Other mounting
positions may introduce a zero shift and/or little gas and pressure dependency of the zero signal. When
