User Manual

3
1. DESCRIPTION
The BR323AL and BR323SS are flameproof, field
mounting, loop powered 5 digit indicators which
display the current flowing in a 4/20mA loop in
engineering units. The instruments only introduce
a 2.3V drop allowing them to be installed into
almost any 4/20mA loop.
The main application of these loop powered
indicators is to display a measured variable or
control signal in a hazardous process area. The
zero and span of the digital display are
configurable via a temporary serial data link using
the free Windows® compatible BEKA software.
This software also enables linear, square root or
custom linearisation to be selected and the units of
measurement legend, which appears below the
main display, to be entered.
The two models are functionally identical. The
BR323AL is housed in a polyester powder coated
flameproof aluminium enclosure and the BR323SS
is in a 316 stainless steel flameproof enclosure.
Both enclosures provide IP66 & NEMA Type 4X
protection. In this instruction manual BR323
refers to the removable electronic assembly which
is common to both the BR323AL and the
BR323SS.
Both instruments have been certified flameproof
and comply with the European ATEX Directive
2014/34/EU.
The BR323 removable electronic assembly, which
is common to both models may only be installed in
a hazardous area when mounted within a
flameproof BR323AL aluminium or BR323SS
stainless steel enclosure.
Fig 1 BR323AL or BR323SS without cover
2. CONTROLS
Both the BR323AL and BR323SS 4/20mA
indicators are configured and calibrated by BEKA
software running on a PC connected via a
temporary serial data link, the indicators therefore
do not have conventional calibration controls.
Calibration can be rapidly checked, but not
changed, using the ‘view’ push button which is
located on the right hand side of the instrument
terminals. Successive operation of this button
steps the instrument display through the calibration
parameters as shown in Fig 2.
Fig 2 View menu