BEKA BA304G-SS-PM Loop Powered Indicator User Manual
- June 9, 2024
- BEKA
Table of Contents
BEKA BA304G-SS-PM Loop Powered Indicator
DESCRIPTION
The BA304G-SS-PM and the BA324G-SS-PM are panel mounting intrinsically safe digital indicators that display the current flowing in a 4/20mA loop in engineering units. They are loop powered, but only introduce a 1.2V drop into the loop. Both models are electrically similar, but have different size displays.
- BA304G-SS-PM 4 digits 34mm high 316 stainless steel enclosure
- BA324G-SS-PM 5 digits 29mm high + 31 segment bargraph 316 stainless steel enclosure
This abbreviated instruction sheet is intended to assist with installation and commissioning, a comprehensive manual describing safety certification, system design and calibration is available from the BEKA sales office or may be downloaded from our website. Both models have IECEx, ATEX and UKEX gas and dust intrinsic safety certification. The certification label which is located on the top of the instrument enclosure shows the certificate numbers and certification codes. Copies of certificates can be downloaded from www.beka.co.uk.
Installation in certified enclosure
In addition to conventional intrinsic safety certification, these indicators
may be installed in a certified Ex e, Ex p or Ex t panel enclosure without
invalidating the panel enclosure’s certification. Please see the full
instruction manual for details.
- When installed in an Ex e panel enclosure, the indicator should be powered by an appropriately rated Zener barrier or galvanic isolator located in a safe area.
- When pressurised, an Ex pyb enclosure reduces the equipment protection level (EPL) inside the enclosure from Gb (Zone 1) toGc (Zone 2). When correctly installed in an Ex pyb enclosure the indicator should be powered by an appropriately rated Zener barrier or galvanic isolator located in a safe area
- When pressurised, an Ex pxb enclosure reduces the equipment protection level (EPL) inside the enclosure from Gb(Zone 1) to non-hazardous. When correctly installed in an Ex pxb enclosure the indicator may therefore be used without a Zener barrier or galvanic isolator
- When pressurised, an Ex pzc enclosure reduces the equipment protection level (EPL) inside the enclosure from Gc (Zone 2) to non-hazardous. When correctly installed in an Ex pzc enclosure the indicator may therefore be used without a Zener barrier or galvanic isolator.
- When correctly installed in a certified Ex t enclosure the indicator may be used without a Zener barrier or galvanic isolator.
INSTALLATION
Both models have a 316 stainless seel cast front panel with a toughened glass window which are impact resistant and provide IP66 protection. The rear of the instrument has IP20 protection
Abbreviated Instruction for BA304G-SS-PM & BA324G-SS-PM intrinsically safe panel mounting loop powered indicators
EMC
For specified immunity all wiring should be in screened twisted pairs, with
the screens earthed in the safe area.
Scale card
The indicator’s units of measurement and tag information are shown above the
display on a slide-in scale card. New instruments are fitted with a scale card
showing the information requested when the instrument was ordered, if this is
not provided a blank scale card will be fitted which can easily be marked on-
site. Custom printed scale cards areavailable from BEKA associates. To remove
the scale card, carefully pull the tab perpendicularly away from the rear of
the indicator assembly. See Fig 3 for the location of the scale card tab. To
replace the scale card carefully insert it into the slot on theright hand side
of the input terminals which is shown in Fig 3. Force should be applied evenly
to both sides of the scale card to prevent it twisting. The card should be
inserted until about 2mm of the transparent tab remains protruding.
OPERATION
All models are controlled and calibrated 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 configured. 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 a 4mAΦ 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 a 20mAΦ 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.
- Provides direct access to the alarm setpoints when the indicator is fitted with optional alarms and the AC5P access setpoints function has been enabled.
- Provides access to the configuration menu via optional security code.
**Note *** BA324G-SS-PM only Φ If the indicator has been calibrated using the CAL function, calibration points may not be 4 and 20mA
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 ( and ) 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.
Manuals, certificates and data- sheets can be downloaded from http://www.beka.co.uk/lpi1/
The BA304G-SS-PM and BA324G-SS-PM 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).
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