BEKA BA307E-SS Rugged 4/20ma Loop Powered Instruction Manual
- June 9, 2024
- BEKA
Table of Contents
BEKA BA307E-SS Rugged 4/20ma Loop Powered
DESCRIPTION
The BA307E-SS and BA327E-SS are rugged intrinsically safe digital indicators housed in stainless steel panel mounting enclosures. They are loop powered by the 4/20mA current which they display in engineering units. The two models are electrically similar, but have different size displays.
Model
- BA307E-SS
- BA327E-SS
Display
- 4 digits 15mm high
- 5 digits 11mm high and bargraph.
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 the BEKA website
www.beka.co.uk/manuals.html.
Both models have IECEx, ATEX & UKEX gas and dust certification and FM & cFM
gas approval. 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
www.beka.co.uk/certificates.html
Typical certification information label
In addition to conventional intrinsic safety applications, these indicators
may be installed in a certified Ex e, Ex p and Ex t enclosure without
invalidating the enclosure’s certification.
IECEx, ATEX and UKEX special conditions for safe use The certificates have an
‘X’ suffix indicating that special conditions apply for some installations.
- a. When installed in an Ex e or Ex t panel enclosure the indicator must be powered by an appropriately rated Zener barrier or galvanic isolator located in a safe area.
- b. When installed in an Ex p panel enclosure the indicator must be powered by an appropriately rated Zener barrier or galvanic isolator located in a safe area and the supply circuit shall be rated for a prospective short circuit current of less than 10kA.
- c. For use in Group IIIC conductive dust atmospheres the indicator shall be mounted such that the instrument terminals have at least IP6X protection.
Please refer to the certificate or the full instruction manual for details.
FM & cFM special conditions for safe use
The indicators must be installed as specified by FM Control Drawings CI300-72
and CI300-73 which may be downloaded with the FM certificates from
www.beka.co.uk/certificates
INSTALLATION
Both models have IP66 front of panel protection but they should be shielded
from direct sunlight and severe weather conditions. The rear of each indicator
has IP20 protection.
Abbreviated instructions for BA307E-SS & BA327E-SS rugged intrinsically safe
panel mounting loop powered indicators:
EMC
For specified immunity all wiring should be in screened twisted pairs, with
the screens earthed at one point within the safe area.
Scale card
The indicator’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 as shown below.
Thus the scale card can easily be changed without removing the indicator from
the panel or opening the instrument enclosure.
New indicators are supplied with a printed scale card showing the requested
units of measurement, if this information is not supplied when the indicator
is 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.
OPERATION
The indicators are controlled via four front panel push buttons. In the display mode i.e. when the indicator is displaying a process variable, these push buttons have the following functions:
-
While this button is pushed the indicator will display the input current in mA, or as a percentage of the instrument span depending upon how the indicator has been conditioned. When the button is released the normal display in engineering units will return. The function of this push button is modified when optional alarms are fitted to the indicator.
-
While this button is pushed the indicator will display the numerical value and analogue bargraph* the indicator has been calibrated to display with 4mA input. When released the normal display in engineering units will return.
-
While this button is pushed the indicator will display the numerical value and analogue bargraph* the indicator has been calibrated to display with 20mA input. When released the normal display in engineering units will return.
-
No function in the display mode unless the tare function is being used.
-
Indicator displays firmware number followed by version.
-
When optional alarms are fitted provides direct access to the alarm setpoints if the ‘ACSP’ access setpoints in display mode function has been enabled.
-
Provides access to the configuration menu via optional security code.
-
Only the BA327E-SS has a bargraph
CONFIGURATION
Indicators 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 indicator security code is set to the default ‘0000’
the first parameter ‘FunC’ will be displayed. If the indicator is protected by
a security code, ‘CodE’ will be displayed and the code must be entered to
obtain access to the menu.
The BA307E-SS and BA327E-SS are CE marked to show compliance with the European
Explosive Atmospheres Directive 2014/34/EU and the European EMC Directive
2014/30/EU.
They are 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).
Manuals, certificates and data-sheets can be downloaded from http://www.beka.co.uk/lpi6/
BEKA associates Ltd. Old Charlton Rd, Hitchin, Hertfordshire, SG5 2DA, UK Tel:
+44(0)1462 438301
e-mail: sales@beka.co.uk
web: www.beka.co.uk
References
- Certificates
- Certificates
- BA304G-SS-PM, BA307E-SS, BA324G-SS-PM and BA327E-SS Rugged 4/20mA Loop powered indicators.
- Instruction manuals
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