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Summary of Contents for BEKA BA558E
- Page 1 BA558E General Purpose 4/20mA loop-powered panel mounting Rate Totaliser Issue 3 Issue: July 2014...
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Page 2: Table Of Contents
9.3.12 Access setpoint 5.19 Reset to factory defaults 9.3.13 Adjusting alarm setpoints 5.20 Over-range from display mode. 9.4 Display backlight 9.4.1 Loop powered 9.4.2 Separately powered The BA558E is CE marked to show compliance with the European EMC Directive 2004/108/EC... -
Page 3: Description
1. DESCRIPTION If the 4/20mA current is disconnected during The BA558E is a panel mounting general purpose operation the latest total and grand total are stored 4/20mA loop-powered Rate Totaliser primarily in permanent memory. intended for use with flowmeters. The instrument... - Page 4 4mA* input - usually zero for flow applications. When the button is released the flow rate will again be 2.2 Displays displayed. The BA558E has two digital displays and associated annunciators, plus a flow indicator as ▲ While this...
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Page 5: Applications
Fig 3 shows a typical application. Fig 2 Typical flow loop 3.2 Resetting the total display to zero The BA558E total display may be reset to zero by momentarily connecting the reset terminals RS1 and RS2 together with a resistance of less than Fig 3 BA558E providing remote display 1kΩ... -
Page 6: Installation
+70ºC, aperture must have the tighter tolerances specified in Fig 4. Fig 4 shows the overall BA558E Rate Totaliser dimensions together with the recommended panel b. Slide the gasket over the body of the Rate cut-out dimensions. -
Page 7: Scale Card
Fig 6. Thus the scale card can easily be changed without removing the BA558E Rate Totaliser from the panel or opening the instrument enclosure. New instruments are supplied with a printed scale... -
Page 8: Configuration And Calibration
All the configuration functions are contained in an For example, if a BA558E is displaying rate in litres easy to use menu that is shown diagrammatically per minute, setting '5CALE-t' to 4.5461 produces a in Fig 8. -
Page 9: Summary Of Configuration Functions
5.2 Accessing the configuration and 5.3 Summary of configuration functions calibrations functions. This section summarises each of the main configuration functions and includes a cross Throughout this manual push buttons are shown reference to a more detailed description. Fig 8 as P, E, ▼... -
Page 10: Clear Grand Total
Display Summary of function Display Summary of function 'CAL' Calibration of the rate display ‘5CALE-t’ Total scale factor using an external current source. Defines the arithmetic relationship Enables the zero and span of the between the rate and total displays. rate display to be adjusted using an May be adjusted between 0.0001 external current source such as a... - Page 11 Display Summary of function 'r5Et' Reset Rate Totaliser to factory defaults. Contains two sub-functions, Select: ‘ConF’ Returns instrument to default configuration shown in section 5.2 ‘LtAb’ Returns lineariser to defaults shown in section 6.5 Both instructions must be confirmed by entering ‘5urE’ digit by digit before they will be executed.
- Page 13 5.4 Rate Totaliser function: ‘FunC’ ‘bi-Lin’ 16 segment adjustable lineariser This configuration function defines the relationship May be adjusted to compensate for between the Rate Totaliser’s 4/20mA input current flowmeter non-linearity with bi-directional and the instruments’s rate display. Three flow. Use of the lineariser is described in alternatives are available for uni-direction flow and section 6 of this instruction manual.
- Page 14 'ZEro' prompt . after it, or it may be omitted. Pressing the ▲ button will cause the BA558E to Notes: display '5PAn' which is a request for a 20mA input a.
- Page 15 4/20mA input current, or to disconnect the briefly displaying ‘Gt CLrd’ to confirm that the BA558E Rate Totaliser from the 4/20mA loop. instruction has been performed and return the instrument 'CLr.Gtot'...
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Page 16: Clip Off
Units of rate display over long periods may result in significant Units of total display totalisation errors, the BA558E rate display can be conditioned to stop totalisation when the flow rate When calculating 5CALE-t the required units of falls below a specified clip-off threshold. -
Page 17: Security Code
When enabled, ‘t-rE5Et’ allows an operator to reset 5.19 Reset to factory defaults: ‘r5Et’ the BA558E total display to zero by operating the This function enables the Rate Totaliser and the ▼ and ▲ push buttons simultaneously for at least lineariser to be quickly returned to the factory two seconds. -
Page 18: Lineariser
6. LINEARISER 6.1 Lineariser calibration using an external A sixteen segment, seventeen break-point (0 to 16) current source. lineariser may be selected in the ‘FunC’ section of This method allows direct calibration of the the configuration menu. The position of each lineariser with an external current source and is the break-point is fully adjustable so that the slope of preferred method when traceability is required. -
Page 20: Example, Adding Break-Points To A New Rate Totaliser
The delete break-point sub-function 'dEL' operates before the default break-point '1:1' which will result in exactly the same way as the 'Add' sub-function in a display of '1:2'. If more new break-points are described above. Once within the ‘dEL’ sub- required, using the ▲... -
Page 21: Example, Adding Break-Points To A New Rate Totaliser
To add a break-point using the ▲ or ▼ button the required rate display at the first break-point. select 'SEt' from the configuration menu and press When set as required, press E to return to the ‘0:n’ P which will result in the 'Add' sub-function prompt prompt from which the next break-point can be being displayed. -
Page 22: Calibration Examples
'1' and return to the 'rE5n' 20mA at a flow of 1100 litres / minute. prompt in the configuration menu by BA558E is required to display flow in litres per pressing E. minute with a resolution of 1 litre and total flow in cubic metres with a resolution of 0.1 cubic metres. - Page 23 In this example the rate display is in using an external current source 'CAL' litres per minute but the total display is from the configuration menu and press required in cubic metres: The BA558E will request a 4mA 5CALE-t Units of rate display input by displaying 'ZEro'.
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Page 24: Using The Internal Reference
100% of maximum flow. A security code of 1209 is required. In the operating mode the BA558E is required to display the input current as a percentage of span when the P push-button is operated and operating the ▼ and ▲ buttons... -
Page 25: Maintenance
If a BA558E fails after it has been functioning correctly, the following table may help to identify the cause of the failure. -
Page 26: Guarantee
9.1 Scale card condition when designing an alarm system. The BA558E Rate Totaliser has a window on the Fig 11 illustrates the conditions available and right hand side of the display through which a scale shows which are fail safe. -
Page 27: Solid State Output
9.3.1 Solid state output Each alarm has a galvanically isolated single pole solid state switch output as shown in Fig 12. The output is polarised and current will only flow in one direction. less than 5Ω + 0.7V Roff greater than 1MΩ Fig 12 Equivalent circuit of each alarm output The solid state output of each alarm may be used to switch any dc circuit with parameters equal to or... -
Page 29: Hysteresis
9.3.2 Configuration and adjustment Summary of alarm configuration functions When optional alarms are fitted to a BA558E Rate Totaliser the configuration menu is extended as Display Description of function shown in Fig 14. The additional functions appear between the ‘C- - P’ and ‘5CALE-t’ functions. For 'EnbL’... - Page 30 P which will reveal the existing alarm setpoint. The flashing e.g. A BA558E calibrated to display a rate of 0 to digit of the setpoint can be adjusted using the ▲ 10000, with a high alarm set at 9000 and and ▼...
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Page 31: Access Setpoint
e.g. A Rate Totaliser with a high alarm set at 9000 reference, ‘ALr1’ or ‘ALr2’ when the alarm output is and an alarm delay of 30 seconds will perform as activated. If both alarm outputs are activated by follows: one variable, the display alternates between the numerical value and ‘Alr1-2’. -
Page 32: Adjusting Alarm Setpoints From Display Mode
9.3.13 Adjusting alarm setpoints from the which the other setpoint may be selected, or the display mode. Rate Totaliser may be returned to the display Access to the alarm setpoints from the Rate mode by pressing E again. Totaliser display mode is obtained by operating the P and ▲... -
Page 33: Display Backlight
9.4 Display backlight 9.4.2 Separately powering the backlight The BA558E loop powered Rate Totaliser can be The optional backlight may also be powered from a supplied with a factory fitted backlight that may be separate safe area power supply as shown in loop or separately powered.
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