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Summary of Contents for BEKA BA405C
- Page 1 BA405C intrinsically safe 2-wire 4/20mA manual set point station issue 6 Issue: 6 November 2009...
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Page 2: Table Of Contents
7.2 Fault finding after commissioning 7.3 Servicing 7.4 Routine maintenance 7.5 Guarantee 7.6 Customer comments 8. Accessories 8.1 Scale card. 8.2 Tag strip The BA405C is CE marked to show compliance with the European Explosive Atmospheres Directive 94/9/EC and the European EMC Directive 2004/108/EC... -
Page 3: Operation
Examination certificate by Notified Body ITS Testing and Certification Ltd. INTRINSIC SAFETY CERTIFICATION For use in the USA the BA405C has intrinsic safety and nonincendive FM Approval - see Appendix 1. ATEX certificate The BA405C has been issued with an EC-Type... -
Page 4: Safety Parameters
Zener barrier or galvanic isolator the that appears between the terminals. Using the BA405C manual set point station may be installed entity concept and these safety parameters, suitable Zener barriers or galvanic isolators may Zone 0... -
Page 5: System Design For Hazardous Areas
Cable resistance (10ohms x 20mA) Fig 2 illustrates a typical application in which a ______ BA405C is being used to adjust the septpoint of a Total maximum voltage drop 19.4V speed controller. To enable the negative side of both the load and the power supply to be earthed,... -
Page 6: Optional Backlights
When designing the loop it is necessary to establish that the supply voltage between terminals 1 & 3 of the BA405C set point station always exceeds the minimum operating voltage shown in Fig 4 Separately powered backlight section 4.1... -
Page 7: Installation
0.8W The maximum permitted cable parameters for the loop should be calculated by subtracting Ci & Li for the BA405C with a loop powered backlight from the cable parameters specified on the Zener barrier or galvanic isolator certificate. Inclusion of the loop powered backlight increases... -
Page 8: Calibration
Fig 9 shows the position of the zero links and zero CALIBRATION potentiometer. The BA405C output currrent does not require any calibration, the front panel multi-turn control will always adjust the output current between Suppression / elevation links approximately 3.5 and 21mA. -
Page 9: Calibration Example
Step 5 Adjust the BA405C front panel control 6.1.5 Calibration example A BA405C set point station is required to display until the output current measured by 25.0 with a 4.000mA output and 115.0 with at external ammeter is 4.000mA. The zero potentiometer at the rear of the BA405C 20.000mA output. -
Page 10: Over & Under-Range
If a BA405C fails after it has been functioning 6.1.6 Over and under-range correctly, the following procedure should be The BA405C can display numbers between - 1999 and 1999. If this range is exceeded the three followed: least significant digits will be blanked. -
Page 11: Accessories
8. ACCESSORIES 8.1 Scale card The BA405C has a window below the control knob to accommodate a scale card. Set point stations can be supplied with a printed scale card showing any units specified at the time of ordering e.g. - Page 12 (classified) A1.0 Factory Mutual Approval locations without the need for Zener barriers or For installation in the USA the BA405C has FM galvanic isolators. US installations must comply Intrinsic Safety and FM Nonincendive approval, with the BEKA associates Control Drawing CI405- project identification 3026081.
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