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BEKA BA538C Manual

Externally powered pulse input panel mounting rate totaliser
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Total
display
Rotating flow
indicator
BA538C
Externally powered
pulse input
panel mounting
rate totaliser
issue 12
Annunciators for
optional alarms
Label
information
Rate
display
Issue: 12
th
25
March 2014

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Summary of Contents for BEKA BA538C

  • Page 1 BA538C Externally powered pulse input panel mounting rate totaliser issue 12 Label information Total display Rate display Rotating flow Annunciators for indicator optional alarms Issue: 12 March 2014...

  • Page 2: Table Of Contents

    8.4 Display backlight 5.12 Clip-off 5.13 Local reset 8.5 Pulse Output 5.14 Resetting grand total 5.15 Security code 8.6 4/20mA output 8.6.1 Programming & adjustment 9. Index The BA538C is CE marked to show compliance with the European EMC Directive 2004/108/EC...

  • Page 3: Description

    In the display mode i.e. when the instrument is displaying rate The BA538C has two sets of input terminals for and total flow the switch functions are: connection to high or low level voltage pulses, a switch contact, an open collector output or to a two wire proximity detector.

  • Page 4: Displays

    2, 4, 6 and 8 are interconnected within the BA534D - see Fig 1. 3.2 Power supply The BA538C may be powered from any dc supply having an output voltage between 10 and 30V. The instrument consumes about 12mA rising to...

  • Page 5: Pulse Input

    3.3 Pulse input 4. INSTALLATION As shown in Fig 2, the BA538C will count pulses from a wide variety of transducers enabling it to 4.1 Location display the output from almost any flowmeter. The BA538C is housed in a robust aluminium...

  • Page 6: Installation Procedure

    4.2 Installation Procedure 4.3 EMC The BA538C complies with the requirements of a. Insert the BA538C into the instrument panel the European EMC Directive 2004/108/EEC. For cut-out from the front of the panel. specified immunity all wiring should be in screened twisted pairs.

  • Page 7: Programming And Calibration

    5.3 is read before attempting programming or recalibration. When the BA538C is fitted with alarms, a pulse output or a 4/20mA output, the basic menu is expanded to include the option(s).

  • Page 9: Summary Of Programmable Functions

    All new BA538C rate totalisers are supplied Display Description of function calibrated as requested at the time of ordering. If calibration information supplied, 'SCALE-r' Rate Scale Factor instrument will be conditioned for an open Defines the arithmetic relationship collector input, with SCALE-r and SCALE-t set to between the pulse input frequency 1 and a timebase of seconds.

  • Page 10: Display Update Interval

    P push-button will toggle control between the 5.5 Type of input: ‘InPut’ two displays. When both decimal points have The BA538C may be programmed to accept pulse been correctly positioned press E to return to the inputs from a wide variety of sensors. To define main menu.

  • Page 11: Lower Display

    5.7 Lower display: ‘dISPLAY.2’ This function turns the lower display on or off. The filter parameters are controlled by a two digit When turned off, the BA538C will only have one number. The first digit defines the amount of eight digit display which may be programmed to filtering applied to the display as shown below.

  • Page 12: Total Scale Factor

    ‘LOC. rSEt’ When activated this function enables the operator (there are 4.54609 litres in a UK gallon) to reset the BA538C total display to zero in the display mode by operating the Up and Down push-buttons simultaneously for more than two To check or change the total scale factor select seconds.
  • Page 13 The grand total counter can only be reset to zero from the 'CLr. Gtot' function in the main programme menu. To zero the grand total counter select 'CLr. Gtot' and press P which will cause the instrument to display 'Clr. no' with 'no' flashing.

  • Page 14: Calibration Example

    5 to 60 litres per minute. connected to terminals 3 & 4. The BA538C is required to display rate of flow in litres per hour with a resolution of one litre and Step 4 Position rate & total decimal points total flow in cubic metres with a resolution of 0.01...
  • Page 15 ‘LOC.rSEt’ from There are 1000 litres in a cubic metre the main menu and press P to display so the BA538C is required to display 1 the current setting. Pressing the Up or cubic metre for every 1,050 x 1,000 Down button will toggle the display pulses received.
  • Page 16 E to return to the main programme menu. Step 13 Return to the display mode Following completion of programming and calibration, return the BA538C to the operating mode by pressing E. All the programming functions will now be stored in permanent memory and will...

  • Page 17: Maintenance

    ENSURE PLANT SAFETY BEFORE If a BA538C fails to function during commissioning STARTING MAINTENANCE the following procedure should be followed: If a BA538C fails after it has been functioning correctly, the following table may help to identify Symptom Cause Check: the cause of the failure.

  • Page 18: Accessories

    Hysteresis may be applied to rate 8.1 Scale card The BA538C has a window on the right hand side alarms. of the display to hold a card showing the units of measurement e.g.

  • Page 19: Programming And Adjustment

    8.3.2 Programming and adjustment Summary of programmable alarm functions When a BA538C is supplied with alarms the main programme menu is extended as shown in Fig 10. Display Description of function The two alarm functions appear between the 'EnbL' Alarm enable 'LOC-rSEt' and the 'CLr.Gtot' functions.
  • Page 20 Fig 10 Alarm menu structure 8.3.3 Alarm enable: ‘EnbL’ 8.3.4 Type of alarm: ‘tYPE’ This function allows the alarm to be enabled or Alarm 1 and Alarm 2 may both be rate or total disabled without altering any of the alarm alarms, or one may be conditioned for rate and parameters.
  • Page 21 A BA538C calibrated to display a flow of 0 to programmed, from the alarm menu. Press P which 5000, with a high alarm set at 4000 and hysteresis will reveal the existing value with one digit of 100 will perform as follows: flashing.

  • Page 22: Access Setpoint

    8.3.11 Access Setpoint: ‘AcSP’ Down buttons to change the flashing digit and the This function activates a separate menu that P push-button to move control to the next digit. If provides direct access to the alarm setpoints the correct code is entered pressing E will then when the instrument is in the display mode.

  • Page 23: Display Backlight

    8.4 Display backlight 8.5 Pulse output BA538C supplied with The BA538C may be supplied with an opto- backlighting to improve display contrast when the isolated solid state pulse output. The output is a instrument is installed in a poorly illuminated area. polarised...

  • Page 24: 4/20Ma Output

    Using the Up or Down push button select the function ‘4-20 OP’ and press P which will result in the BA538C displaying ‘4.000’ which is the prompt for setting the rate display corresponding to an output current of 4.000mA. Pressing P will reveal the existing setting with the most significant digit flashing.
  • Page 25 Note 2: If the BA538C and the 4/20mA current sink output are powered from separate supplies, the 4/20mA output current will continue to flow when the BA538C supply fails or is turned off. Powering both from a common supply as shown in Fig 15 eliminates this effect.

  • Page 26: Index

    9. INDEX Subject Section Subject Section ‘AcSP’ 8.3.2; 8.3.11 ‘LOC.rSEt’ 5.13 Alarms optional Local reset 5.13 access 8.3.2; 8.3.11 Location contacts 8.3.2; 8.3.7 delay time 8.3.2; 8.3.9 Maintenance enable 8.3.2; 8.3.3 routine function 8.3.2; 8.3.6 hysteresis 8.3.2; 8.3.8 ‘no.nc’ 8.3.2; 8.3.7 programming 8.3.2 setpoint...

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