Bronkhorst®
Instruction Manual EL-PRESS™
9.17.101I
13
2
Installation
2.1
Functional properties
Before installing the
EL-PRESS™
, check the serial number label to see if the functional properties
match your requirements:
·
Flow and/or pressure rate
·
Media to be used in the instrument
·
Upstream and downstream pressure(s)
·
Operating temperature
·
Valve type (N.C. - Normally Closed / N.O. - Normally Open)
·
Input and output signal
Sealing material compatibility
The EL-PRESS™ is fitted with specific sealing material(s), compatible with the media specified at ordering time. Be sure that
the sealing materials are compatible with the media and conditions used in the system. Bronkhorst High-Tech B.V. cannot
be held responsible for any damage resulting from the use of other media and/or conditions than specified on the purchase
order.
See also section
Sealing material compatibility
2.2
Operating conditions
Test pressure
Bronkhorst® instruments are pressure tested to at least 1.5 times the specified operating pressure and
outboard leak tested to at least 2 * 10
-9
mbar l/s Helium.
·
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.
Caution:
EL-PRESS™ models with a 400 bar sensor (code M40A in the
) are pressure tested to a maximum of 500
bar.
Rapid gas decompression / explosive decompression
For instruments used above 10 barg:
Bronkhorst recommends a maximum decompression rate of 70 bar/min, according NACE TM0297.
Exceeding this rate can have negative influence on the lifetime of the sealing materials.
2.3
Piping requirements
·
For reliable performance, make sure the fluid stream is uncontaminated. If necessary,
use an inlet filter to ensure a moisture, oil and particle free gas stream. Select a filter with
a surface area and pore size that minimize the pressure drop.
·
If back flow could occur, the use of a check valve is also recommended.
2.4
Mounting
For stable fixation, the bottom of the instrument base is fitted with mounting holes. See the dimensional drawing for the
exact locations.
