ba324g
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Hazardous area Safe area Intrinsically safe for use in all gas & dust hazardous areas u Loop powered only Zener barriers or galvanic isolators 2-wire Tx u 5 digit 29mm high 4/20mA circuit Shown with optional backlight - loop powered The BA324G loop powered 4/20mA indicator is a new field mounting instrument that supersedes the well established BA324C. It is electrically and mechanically compatible with the earlier model but has a much larger full 5 digit display and guaranteed performance between -40 and +70°C. Like it’s predecessor, the BA324G is housed in a robust IP66 enclosure which may be surface or pipe mounting. Main application of the BA324G is to display a measured variable in meaningful engineering units within a hazardous area. The zero and span of the display are independently adjustable allowing the indicator to be calibrated to display any linear variable represented by the 4/20mA signal. A root extractor and an adjustable sixteen segment lineariser enable the indicator to display flow and variables such as tank level in linear engineering units. For weighing applications a tare function is included. A large 29mm high 5 digit display and 31 segment bargraph provided maximum contrast and have a very wide viewing angle, allowing the BA324G indicator to be easily read in most lighting conditions over a wide temperature range. An optional factory fitted backlight is available for installations in poorly illuminated areas. The five digits, with four decimal points and a negative sign, may be configured to display any variable between -99999 and 99999. IP66 protection is provided by the robust GRP enclosure which has stainless steel fittings, silicone gaskets and an 8mm thick armoured glass window. Ingress and impact protection have been independently assessed by Intertek. An optional back-box terminal assembly including a continuity diode in the 4/20mA loop is available for users wishing to terminate field wiring before the indicator assembly is installed. The scale card which shows units of measurement and tag information slides into an internal slot and can easily be changed on-site. New instruments are supplied with a printed scale card showing customer specified information, if this is not supplied a blank card is fitted which can easily be marked on-site. IECEx and ATEX intrinsic safety gas and dust certification permits the BA324G to be installed throughout the world. The 4/20mA input terminals comply with the requirements for simple apparatus which, together with the low voltage drop, allow the indicator to be connected in series with most intrinsically safe 4/20mA loops. All BA324G indicators may be installed in gas or dust hazardous areas. Input safety parameters are the same or greater than those for the preceding BA324C, thus allowing the BA324G to safely replace the earlier model. A backlight which may be loop or separately powered is available as a factory fitted option. It provides green background illumination allowing the display to be read at night or in poorly illuminated areas. When powered from the 4/20mA loop, no additional intrinsically safe interface or wiring is required and the indicator input remain compliant with the requirements for simple apparatus. Powering from a separate supply produces a brighter backlight but requires an additional intrinsically safe interface and field wiring. Optional dual alarm outputs which can switch hazardous or safe area loads, such as sounders, beacons or solenoid valves, are available as a factory fitted option. The two galvanically isolated solid state outputs may be independently conditioned as high or low alarms with normally open or closed outputs. Annunciators on the display show the status of both alarms. display & 31 segment bargraph. u I ntrinsically safe ATEX & IECEx certification. segment lineariser. u P66 GRP enclosure I u Easy scale card installation on-site. u ptional backlight & O alarms. Reliability is ensured by protection from incorrect connection and radio frequency interference. The indicator has been subjected to extensive vibration and thermal testing and is supported by a three year guarantee. Other field mounting models in this range include the BA304G which has a similar specification with a four digit 32mm high display. BEKA associates Ltd. Old Charlton Rd. Hitchin, Hertfordshire, SG5 2DA, U.K. Tel. (01462) 438301 Fax (01462) 453971 e-mail sales@beka.co.uk www.beka.co.uk

SPECIFICATION 4 to 20mA Less than 1.2V at 20°C Less than 1.3V at -40°C Less than 5V with optional loop powered backlight. ±200mA or ±30V will not damage the indicator LEGEND PLATE (Function in display mode) Shows display with 4mA input Shows display with 20mA input Displays input in mA or as a % of span, has a modified function when alarms are fitted. Used for tare function Accuracy at 20°C Linear Root extracting Temperature effect on: Zero Span Series mode rejection Intrinsic safety Europe ATEX Code Input parameters U Ii Pi Output parameters Cert. No. International IECEx Code Input...