BEKA BA358E Loop Powered Instruction Manual
- June 9, 2024
- BEKA
Table of Contents
BEKA BA358E Loop Powered Instruction Manual
DESCRIPTION
The BA358E is a panel mounting, intrinsically safe, 4/20mA rate totaliser primarily intended for use with flowmeters. It simultaneously displays the rate of flow (4/20mA current) and the total flow in engineering units on separate displays. It is loop powered but only introduces a 1.2V drop into the loop.
This abbreviated instruction sheet is intended to assist with installation and commissioning, a comprehensive instruction manual describing safety certification, system design and calibration is available from the BEKA sales office or may be downloaded from our website.
The BA358E has IECEx, ATEX and UKEX intrinsic safety certification for use in flammable gas & dust atmospheres. FM and cFM approval also permits installation in the USA and Canada. The certification label, which is located on the top of the instrument enclosure shows the certificate numbers and the certification codes. Copies of certificates may be downloaded from our website.
Special conditions for safe use
The IECEx, ATEX and UKEX certificates have an ‘X’ suffix indicating that
special conditions apply for safe use.
WARNING
To avoid an electrostatic charge being generated instrument enclosure
should only be cleaned with a damp cloth. Special conditions also apply for
use in IIIC conductive dusts – please see full manual.
INSTALLATION
The BA358E has IP66 front of panel protection but it should be shielded from direct sunlight and severe weather conditions. The rear of the rate to taliser has IP20 protection.
Cut-out dimensions
Recommended for all installations. Mandatory to achieve an IP66 seal between
the instrument and the panel 136 +0.5/-0.0 x 66.2 +0.5/-0.0
Fig 1 cut out dimensions & terminals
Abbreviated Instructions for
BA358E intrinsically safe panel mounting loop powered rate totaliser
Issue 3
24th November 2022
BEKA associates Ltd. Old Charlton Rd, Hitchin, Hertfordshire,
SG5 2DA, UK Tel: +44(0)1462 438301 e-mail:
[email protected]
web: www.beka.co.uk
- Align foot and body of panel mounting clamp by turning screw anticlockwise
Fig 2 Installation procedure
EMC
For specified immunity all wiring should be in screened twisted pairs, with
the screens earthed at one point within the safe are
Fig 3 Typical measurement loop
Scale card
The rate totaliser’s units of measurement are shown on a printed scale card
visible through 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 a shown below.
Fig 4 Inserting flexible strip carrying scale card into slot at the rear of indicator.
he instrument 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 was not supplied when the
instrument was ordered a blank card will be fitted.
A pack of self-adhesive scale cards printed with common units of measurement is available as an accessory from BEKA associates. Custom printed scale cards can also be supplied.
To change a scale card, unclip the protruding end of the flexible strip 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.
Align the self-adhesive printed scale card onto the flexible strip and insert the strip into the indicator as shown above.
Fig 5 Fitting scale card to flexible strip
OPERATION
The BA358E is controlled and configured via the four front panel push buttons located below the display. In the display mode i.e. when the instrument is totalising, these push buttons have the following functions:
P Displays input current in mA or as a percentage of span. (configurable
function) Modified when optional alarms are fitted.
▼ Shows rate display calibration at 4mA input
▲ Shows rate display calibration at 20mA input
E Shows time since instrument was powered or total display was reset.
E+▼ Grand total displays least significant 8 digits
E+▲ Grand total displays most significant 8 digits
▼+▲ Resets total display (configurable function)
P+▼ Shows firmware version
P+ ▲ Optional alarm setpoint access
P+E Access to configuration menu
CONFIGURATION
Totalisers are supplied calibrated as requested when ordered, if not specified default configuration will be supplied but can easily be changed on-site.
Fig 6 shows the location of each function within the configuration menu with a brief summary of the function. Please refer to the full instruction manual for detailed configuration information and for a description of the lineariser and the optional dual alarms.
Access to the configuration menu is obtained by pressing the P and E buttons simultaneously. If the totaliser security code is set to the default ‘0000’ the first parameter ‘FunC’ will be displayed. If the totaliser is protected by a security code, ‘CodE’ will be displayed and the code must be entered to obtain access to the menu.
Function
to select
Function or rate totaliser
‘5td ’ Linear
‘root’ Sq root extraction
‘Lin’ 16 segment lineariser
‘bi-5td’ Bi-directional linear
‘bi-Lin’ Bi-directional 16 segment lineariser
Resolution
to select resolution of least significant digit of rate display,B may be set to 1, 2, 5 or 10 digits
Update
to select interval between display updates, may be set to 1, 2, 3, 4 or 5 seconds
Upper Display
to select whether rAtE or totAL is shown on the upper display
Lower Display
to turn lower display on or oFF
Decimal point
to select position of decimal point and to toggle between rate and total displays
Calibration of rate display using external current source (Preferred method)
With accurate 4mA input current set required zero display by pressing and to move to the next digit
Similarly, using accurate 20mA input current set required full scale display
Any current between 4 and 20mA may be used providing difference is > 4mA
Calibration of rate display using internal references (Input current may be any value)
Using ZEro function set required display at 4mA by pressing pressing and to move to the next digit
Similarly, using 5PAn function set required display at 20mA
Clear grand total
Press to select YES to reset grand total to zero. Confirm
selection by entering 5urE by pressing & to move to next digit
Timebase
to select between rate display timebase. tb-1 for flow/sec tb-60 for flow/min tb-3600 for flow/hour
Function of P button in display mode
Press to toggle between 4-20mA and % of span
Total scale factor
Arithmetric relationship between the rate and total displays
Press to adjust value and to move to next digit or decimal point
CLip- oFF
Positive or negative rate display below which totalization is inhibited
Press to adjust value and to move to next digit
Local total rese
to turn the local total reset function on or oFF. When on, total displayis reset to zero when are operated simultaneously for more than2 seconds
Local grand total reset
to turn the local grand total reset function on or oFF. When on, grand total display may be reset to zero when are operated simultaneously for more than 10 seconds
Define Security Code
Enter by pressing to move to next digit
Reset Rate Totaliser configuration
Press to select ConFN to reset rate and total or LtAb to reset lineariser to
default configuration.
Confirm selection by entering 5urE by pressing to move to next digit
Fig 6 Configuration menu
Full manual, certificates, and datasheet can be downloaded from
http://www.beka.co.uk/lprt2/
The BA358E is CE marked to show compliance with the European Explosive Atmospheres Directive 2014/34/EU and the European EMC Directive 2014/30/EU.
It is also UKCA marked to show compliance with UK statutory requirements Equipment and Protective Systems Intended for Use in Potentially Explosive Atmospheres Regulations UKSI 2016:1107 (as amended) and with the Electromagnetic Compatibility Regulations UKSI 2016:1091 (as amended).