BEKA BA304G Loop Powered Indicator Instruction Manual
- June 9, 2024
- BEKA
Table of Contents
BEKA BA304G Loop Powered Indicator
DESCRIPTION
The BA304G, BA304G-SS, BA324G and the BA324G-SS are field 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. All the models are electrically similar, but have different size displays and enclosure materials.
- BA304G 4 digits 34mm high GRP enclosure
- BA304G-SS 4 digits 34mm high 316 stainless steel enclosure
- BA324G 5 digits 29mm high + 31 segment bargraph. GRP enclosure.
- BA324G-SS 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 instruction manual describing safety
certification, system design and calibration is available from the BEKA sales
office or may be downloaded from our website. All models have IECEx, ATEX,
UKEX, ETL and cETL intrinsic safety certification for use in flammable gas and
combustible dust atmospheres. 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.
INSTALLATION
The BA304G and BA324G have a robust glass reinforced polyester (GRP), carbon loaded enclosure. The BA304G-SS and the BA324G-SS have a 316 stainless steel enclosure. Both types of enclosure are impact resistant and provide IP66 ingress protection. They are suitable for exterior surface mounting in most industrial environments, or may be panel or pipe mounted using an accessory kit. If the indicator is not bolted to an earthed post of structure the earth terminal should be connected to local earthed metal work or to the plant’s potential equalising conductor. GRP indicators have an earth terminal on the cable entry bonding plate and stainless steel indicators in the bottom left hand corner of the back-box. Terminals 8, 9, 10, 11, 12, 13 & 14 are only fitted when the indicator includes optional alarms and a backlight. See full manual for details.
-
Step A
Unscrew the four captive ‘A’ screws and separate the indicator assembly and the back-box. -
Step B
Secure the enclosure back-box to a flat surface with M6 screws through the four ‘B’ holes. Alternatively use a pipe mounting kit. -
Step C
Remove the temporary hole plug and install an appropriate IP rated cable gland or conduit fitting. Feed the field wiring through the cable entry. -
Step D
Terminate field wiring on the indicator assembly. Replace the indicator assembly on the enclosure back-box and tighten the four ‘A’ screws.
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 are available from BEKA associates. To remove
the scale card, carefully pull the tab perpendicularly away from the rear of
the indicator assembly. See Fig 2 for the location of the scale card tab.
To replace the scale card carefully insert it into the slot on the right hand side of the input terminals which is shown in Fig 2. 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.
- BA324G & BA324G-SS 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 5 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.
The BA304G, BA304G-SS,BA324G & BA324G-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/lpi1/