Bronkhorst®
Instruction Manual EL-FLOW® Classic series
9.17.085D
8
2
Starting up
2.1
Functional properties
Before installing the EL-FLOW® Classic, check the serial number label to see if the
functional properties match your requirements:
·
Flow rate
·
Media to be used in the instrument
·
Input and output signal
·
Upstream and downstream pressure(s)
·
Operating temperature
2.2
Operating conditions
The EL-FLOW® Classic is fitted with Viton® seals. Be sure that the sealing material is 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.
Bronkhorst® instruments are pressure tested to at least 1.5 times the requested maximum allowed
operating pressure (30 bar(g)) and outboard leak tested to at least 2 * 10
-9
mbar l/s Helium. The tested
pressure is specified on the instrument with a red sticker. If this sticker is missing or if the specified
pressure is insufficient, the instrument must not be used and should be returned to the factory.
Before installation, make sure that the tested pressure is in accordance with the safety factor of your application. The tested
pressure must always be higher than the maximum operating pressure.
Disassembling the instrument and/or replacing parts of it will invalidate the pressure test specification.
2.3
Mounting
The bottom side of the
EL-FLOW® Classic
is fitted with two threaded mounting holes for stable mechanical fixation of the
instrument. Refer to the
dimensional drawing
for the exact position of the mounting holes.
For optimal performance, observe the following guidelines:
·
Preferably, mount the EL-FLOW® Classic in an upright position, especially if the operating pressure is higher than 10 bar
·
When mounting the instrument in a position with upward or downward flow,
adjusting the zero point
is recommended
·
Avoid installation in close proximity of mechanical vibration and/or heat sources
2.4
Fluidic connections
·
Install the EL-FLOW® Classic in the process line, in accordance with the direction of
the FLOW arrow on the product label.
·
The fluidic connections are provided with a ¼” BSPP female thread. The adapter
chambers are optimized for the use of Swagelok® RS-type adapters combined with
AS013 (70°Sh) O-rings for leak tight installation.
·
Tighten connections according to the instructions of the supplier of the fittings. The
use of Swagelok® RS-type stainless steel adapters is recommended (part no. SS-400-
1-4RS). Adapters can be ordered separately. Contact your local distributor for more
information.
·
Do not install small diameter piping on high flow rates and avoid abrupt angles or other disturbances within a distance
of 10 pipe diameters from the inlet or outlet of the device.
·
Do not install pressure regulators within a distance of 25 pipe diameters.
Check the fluidic system for leaks before applying pressure, especially if toxic, explosive or other dangerous fluids are used.
