BEKA BA337E-SS, Manual

Page: 18 / 65

Fig 9 Installation procedure
5.3 EMC
The BA337E-SS complies with the requirements of
the European EMC Directive 2014/30/EU. For
specified immunity all wiring should be in screened
twisted pairs, with the screens earthed at one point
within the safe area.
Fig 10 Terminals for field wiring
5.4 Rate Totaliser earthing
The BA337E-SS has an M4 earth stud on the rear
panel which should be electrically connected to the
panel enclosure in which the indicator is mounted, or
to the plant equipotential conductor.
5.5 Scale card
The Rate Totaliser’s units of measurement are
shown on a printed scale card in a window at the
right hand side of the display. The scale card is
mounted on a flexible strip that is inserted into a slot
at the rear of the instrument as shown in Fig 11.
Thus the scale card can easily be changed without
removing the Rate Totaliser from the panel or
opening the instrument enclosure.
New Rate Totalisers are supplied with a printed
scale card showing the requested units of
measurement, if this information is not supplied
when the instrument is ordered a blank card will be
fitted.
A pack of self-adhesive scale cards printed with
common units of flow measurement is available as
an accessory from BEKA associates. Custom
printed scale cards can also be supplied.
To change a scale card, unclip the tapered end of
the flexible strip at the rear of the instrument by
gently pushing it upwards and pulling it out of the
enclosure. Peel the existing scale card from the
flexible strip and replace it with a new printed card,
which should be aligned as shown below. Do not fit
a new scale card on top of an existing card.
Install the new scale card by gently pushing the
flexible strip into the slot at the rear of the Rate
Totaliser, when it reaches the internal end-stop
secure it by pushing the end of the flexible strip
downwards so that the tapered section is held by the
rear panel.
Align the self-adhesive
printed scale card onto the
flexible strip and insert the
strip into the indicator as
shown below.
Fig 11 Inserting flexible strip carrying scale card into
slot at the rear of the Rate Totaliser.
18