BEKA BA314E, Manual

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APPENDIX 4
BA314E Tachometer
The BA314E Tachometer is functionally identical to
the BA314G Tachometer described in the main
sections of this manual, but differs in mechanical
construction, certification and factory fitted options.
All BA314E Tachometers are fitted with:
A Green internally powered display backlight
Dual galvanically isolated alarms
An isolated 4/20mA current sink output
These are only available as factory fitted options for
the BA314G Tachometer.
A4.1 Mechanical construction
The BA314E is housed in a robust GRP IP66
enclosure with a separate terminal compartment.
Section A4.5 of this appendix describes the enclosure
and installation procedure.
A4.2 Certification
The BA314E has the same ATEX, IECEx and ETL
intrinsic safety certification as the BA314G, but the
BA314E does not have ATEX and IECEx dust
certification
.
The safety parameters and certification numbers
specified in this manual for the BA314G Tachometers
also apply to the BA314E Tachometer. Therefore all
of the systems described for the BA314G in the main
section of this manual may also be used for the
BA314E.
A4.3 Location
The BA314E Tachometer is housed in a robust IP66
glass reinforced polyester (GRP) enclosure
incorporating an armoured glass window and stainless
steel fittings. It is suitable for exterior mounting in
most industrial installations, including off-shore and
waste water treatment sites. The Tachometer should
be positioned where the display is not in continuous
direct sunlight.
The field terminals and the two mounting holes are
located in a separate compartment with a sealed
cover allowing the instrument to be installed without
exposing the display assembly.
The enclosure is fitted with a bonding plate to ensure
electrical continuity between the three conduit / cable
entries.
A4.4 BA314E Accessories
A4.4.1 Units measurement & instrument
identification.
The BA314E is fitted with a blank escutcheon
around the liquid crystal display. This can be
supplied printed with any units of measurement and
tag information specified at the time of ordering.
Alternatively, the information may be added on-site
via an embossed strip, dry transfer or a permanent
marker.
To gain access to the escutcheon remove the
terminal cover by unscrewing the two 'A' screws
which will reveal two concealed 'D' screws.
Remove the push buttons by unscrewing the two 'C'
screws and un-plug the five way connector. Finally,
unscrew all four 'D' screws and carefully lift off the
front of the instrument. The location of all the
screws is shown in Fig A4.1.
Add the required legend to the display escutcheon,
or stick a new pre-printed self-adhesive escutcheon,
which is available from BEKA associates, on top of
the existing escutcheon. Do not remove the original
escutcheon.
The BA314E can also be supplied with a blank or
custom laser engraved stainless steel plate secured
by two screws to the front of the instrument
enclosure. This plate can typically accommodate:
1 row of 9 alphanumeric characters 10mm high
or 1 row of 11 alphanumeric characters 7mm high
or 2 rows of 18 alphanumeric characters 5mm
high.
A4.4.2 Pipe mounting kits
The BA314E Tachometer is surface mounting, but
may be pipe mounted using the BA392D or the
BA393 pipe mounting kit.
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