Subscribe to Our Youtube Channel
Related Manuals for BEKA BA304C
Summary of Contents for BEKA BA304C
- Page 1 BA304C Intrinsically safe loop- powered 3½ digit field mounting indicator Issue 7 Issue: 7 March 2014...
-
Page 2: Table Of Contents
6.1 Zero adjustment 6.2 Span adjustment 6.3 Decimal point 6.4 Reverse action 6.5 Calibration example 6.6 Over and under-range The BA304C indicator is CE marked to show compliance with the European Explosives Atmospheres Directive 94/9/EC and the European EMC Directive 2004/108/EC... -
Page 3: Description
4/20mA current loop. No additional power supply or battery is required. The main application of the BA304C is to display a measured variable or control signal in a hazardous process area. The zero and span of the display are... -
Page 4: Zones, Gas Groups & T Rating
This allows the BA304C to be connected into any or friction between the aluminium enclosure intrinsically safe circuit protected by a Zener barrier and iron/steel is excluded. -
Page 5: Remote Indication
Fig 2 illustrates a typical application in which a BA304C indicator is connected in series with a 2- wire transmitter protected by a Zener barrier. Fig 2 BA304C in a transmitter loop 4.2 Remote indication A BA304C indicator may be driven from a 4/20mA... -
Page 6: Installation
Replace the indicator assembly and evenly tighten the three 'B' screws. 5.1 Location The BA304C indicator can be supplied in either a g. Replace the enclosure cover and evenly glass reinforced polyester (GRP), or an epoxy tighten the four 'A' screws. -
Page 7: Calibration
1000. Zero polarity is defined by the position of the suppression / elevation links which are shown in The BA304C is conditioned and calibrated by plug- Fig 6. in links and two multi-turn potentiometers. For maximum accuracy, the instrument should be... -
Page 8: Span Adjustment
Under-range is indicated by -1 and over-range by 1. If the display range is not exceeded, the BA304C will produce accurate readings outside the 4/20mA current range. Although not guaranteed, most BA304C indicators will operate between 3 and... -
Page 9: Maintenance
BEKA associates or your local BEKA test equipment should be used unless agent for repair a gas clearance certificate is available. If a BA304C fails after it has been functioning correctly, the following procedure should be followed:... -
Page 10: Routine Maintenance
7.5 Guarantee Indicators which fail within the guarantee period should be returned to BEKA associates or your local BEKA agent. It is helpful if a brief description of the fault symptoms is provided. 7.6 Customer comments BEKA associates is always pleased to receive comments from customers about our products and services. -
Page 11: Accessories
8. ACCESSORIES 8.3 Root extractor The BA304C can be supplied with a square root extractor which enables the indicator to accurately 8.1 Engraved scale and tag plates All BA304C indicators are fitted with blank display the output from a differential flow meter in... -
Page 12: Calibration Example
8.3.1 Calibration example with root extractor 8.4.1 Separately powered backlight The BA304C is required to display rate of flow in The separately powered backlight is segregated gallons per minute, with a resolution of 0.1 gallons. from the measuring circuit and has been certified... -
Page 13: Loop Powered Backlight
# or output resistance of galvanic isolator 8.4.2 Loop powered backlight This backlight may be connected in series with the 4/20mA measuring circuit so that like the BA304C indicator it is loop powered. This eliminates the need for a separate Zener barrier or galvanic isolator and associated wiring for the backlight, thus significantly reducing the installation costs. -
Page 14: Appendix 1 Installation In Usa
Temperature rating A1.0 Factory Mutual Approval The indicator has been approved by Factory For installations in the USA the BA304C and all Mutual for installation in all Classes, Divisions and accessories have been approved by Factory Gas Groups as shown below. - Page 15 As shown in Fig 9 the backlight may be connected in series with the BA304C indicator and powered from any certified associated apparatus such as a Zener barrier or galvanic isolator having output...
Need help?
Do you have a question about the BA304C and is the answer not in the manual?
Questions and answers