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Issue: 6

9

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July 2019

BA588E

General Purpose

Two input

Rate Totaliser

Issue 6

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Summary of Contents for BA588E

Page 1: ...Issue 6 9th July 2019 BA588E General Purpose Two input Rate Totaliser Issue 6 ...

Page 2: ...egment 6 5 Remove a segment 6 6 Input frequency 6 7 Flowmeter K factors 6 8 Lineariser error messages 6 9 Lineariser factory defaults 7 Pulse Output 7 1 System design 7 2 Configuration 7 3 Access pulse output sub menu 7 4 Enable pulse output 7 5 Source of output pulse 7 6 Divide output pulse frequency 7 7 Define output pulse width 7 8 Stored pulses 8 CONFIGURATION EXAMPLE 8 1 Configuration procedu...

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Page 4: ...neariser with up to sixteen straight line segments that may be configured to compensate for the flowmeter s non linearity All BA588E Rate Totalisers have an isolated pulse output which may be configured to synchronously retransmit either of the two pulse inputs or the consolidated Input A Input b rate of flow The following factory fitted accessories are available Internally powered display backlig...

Page 5: ...d annunciators plus a flow indicator as shown on front cover of this manual Total display Shows the total flow of the selected input or the composite flow A b or A b usually on the upper eight digit display May be reset to zero by the front panel push buttons or a remote reset switch Rate display Shows the flow rate of the selected input or the composite flow rate A b or A b usually on the lower s...

Page 6: ...2 1mA Open collector 2kΩ 10kΩ Magnetic pick off 0mV 40mV peak Voltage pulse low 1 0V 3 0V Voltage pulse high 3 0V 10 0V Flowmeters with a switch contact proximity detector or an open collector output require energising to determine their state which is achieved by linking two BA588E terminals together for each input as shown in Fig 2 3 2 1 Switch contact input Any flowmeter with a mecvhanically or...

Page 7: ...to zero by operating the and push buttons simultaneously for more than two seconds in the totalising mode i e when the instrument is displaying flow See 5 20 4 INSTALLATION 4 1 Location The BA588E Rate Totaliser has a robust glass reinforced Noryl enclosure with a toughened glass window The front has IP66 ingress protection and a gasket seals the joint between the instrument enclosure and the pane...

Page 8: ...he clamp body d Place a clamp in the recess on each side of the instrument pulling gently to slide it onto the dovetail as shown in Fig 4 Push the knurled screw slightly forward to engage the thread and tighten by turning clockwise until it is just finger tight When the clamps are fitted ensure that the gasket behind the front panel bezel is correctly positioned before fully tightening the clamps ...

Page 9: ...to slot at the rear of the instrument 5 0 CONFIGURATION AND CALIBRATION The BA588E Rate Totaliser is configured and calibrated via four front panel push buttons Figs 6 and 7 show the calibration structure and the configuration menu Each menu function is summarised in section 5 3 of this manual and each summary includes a reference to more detailed information The two sixteen segment linearisers an...

Page 10: ...se per litre and the rate display is required in gallons 5CALE r should be set to 4 5461 which is the number of litres in an imperial gallon The total flow display is independent of the rate display 5CALE t is a dividing factor that converts the output from FACtor into the required engineering units for the total display e g if the output from FACtor is one pulse per litre and the total display is...

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Page 14: ... following reconfiguration the Rate Totaliser will display dAtA followed by 5AVE while the new information is stored in permanent memory 5 3 Summary of configuration functions This section summarises all the configuration functions When read in conjunction with Fig 7 it provides a quick aid for configuring the Rate Totaliser If more detail is required each section of this summary contains a refere...

Page 15: ...ACtor A Input A flowmeter K factor Each input of the rate totaliser is divided by FACtor A or factor b which are usually set to the K factor of the flowmeter thus converting the flowmeter output into engineering units FACtor may be adjusted between 0 0001 and 99999 When the 16 segment lineariser Lin is selected in the Function sub menu up to 16 values for FACtor a may be entered each starting at a...

Page 16: ...he and buttons are operated simultaneously for more than 2 seconds in the totalising mode See section 5 20 Local grand total reset clr gtot When on is selected grand total may be reset to zero when buttons are operated simultaneously for more than 10 seconds in the totalising mode Note Once reset the grand total can not be recovered See section 5 21 Display Summary of function e clr External reset...

Page 17: ...eal the inP tYPE prompt pressing again will reveal the existing input If set as required press twice to return to the configuration menu or repeatedly press the or button until the required type of input is displayed and then press twice to return to the configuration menu One of following six types may be selected for each input Switching thresholds Low High VoLt5 L Voltage pulse low 1 1 3V VoLt5...

Page 18: ...required interval has been selected press to enter the selection and return to the configuration menu 5 9 Composite display Count The BA588E can produce a composite rate and total display from the sum or difference of Input A and Input b This composite display is only meaningful if Input A and Input b are calibrated to have the same engineering units of display This function defines the composite ...

Page 19: ...es per litre FACtor A therefore converts the flowmeter output into engineering units ready for further scaling to produce the required rate and total flow displays See Fig 6 When the 16 segment lineariser Lin is selected in FunCtion up to 16 values of FACtor A may be entered each starting at a specified input pulse frequency which may be adjusted to compensate for flowmeter non linearity See secti...

Page 20: ...multiplies the rate display by 1 60 or 3 600 depending upon whether the Rate Totaliser is required to display flow rate per second per minute or per hour See Fig 6 To check or change the timebase select t bA5E from the configuration menu and press which will reveal the existing setting Pressing the or button will scroll through the following three options to display tb 1 for flow second tb 60 for ...

Page 21: ...play decimal point are changed clip off will automatically be reset to zero A new clip off threshold must be entered after changes to any of these functions have been made 5 19 Local reset LoC clr The Local reset function contains two sub functions clr tot and clr gtot which when enabled allow each input total and the grand total to be reset to zero via the instrument push buttons while the Rate T...

Page 22: ...t digit When entered pressing will reset the grand total to zero and return the Rate Totaliser to the configuration menu Note Once reset the grand total can not be recovered 5 24 Security code CodE Access to the instrument configuration menu may be protected by a four digit alphanumeric security code which must be entered to gain access Unless otherwise requested new instruments are configured wit...

Page 23: ...owmeter specification Flowmeters are usually supplied with a calibration certificate specifying the average K factor and the flow range over which it applies For use over extended flow ranges and for non linear devices multiple K factors will be specified often in a table similar to the one shown below Flow Rate Litres minute K factor Pulse litre 5 200 10 230 15 239 20 242 From this calibration ce...

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Page 25: ...nnected to separate flowmeters with the same non linearity this sub function simplifies configuration by copying input A lineariser configuration to the input b lineariser so that the information only has to be entered once Select FACtor A in the configuration menu and press which will reveal one of five sub functions If Copy A2b is not displayed repeatedly press the or button to select Copy A2b P...

Page 26: ... of the flashing digit may be changed by pressing the or button When this digit is correct pressing will transfer control to the next digit When the input frequency for this lineariser segment is set as required press the button to return to the segment identification display from which the next segment may be selected using or push buttons When the input starting frequency for all of the segments...

Page 27: ...e input b for re transmission applications or it may be derived from the least significant digit of the composite total display When derived from the composite total display the output pulse frequency may be divided and the output pulse width defined The retransmitted RTx annunciator on the instrument display shows the status of the retransmitted pulse output Annunciator activation depends upon th...

Page 28: ...selected two additional functions diVidE and durAtion are added to the sub menu allowing the output pulse frequency to be divided and the output pulse width duration to be defined See Fig 11 7 3 Access Pulse output sub menu PuL5E oP Access the Rate Totaliser configuration menu as described in section 5 2 Using the or push buttons scroll though the menu until PuL5E oP is displayed pressing will the...

Page 29: ...r The value can be changed by pressing the or push button to select the required value followed by the button to return to diVidE prompt Note This function only appears in the pulse output sub menu when the output pulse is derived from the composite total 7 7 Output pulse width durAtion When the output pulse is derived from the least significant digit of the composite total the output pulse width ...

Page 30: ...will reveal the sub menu Again using the or button select inP TYPE and press to reveal the current input The Rate Totaliser is required to work with a magnetic pick off so using the or button select CoiL followed by to return to the inP tYPE prompt in the sub menu Using the or button select dEbouncE from the sub menu and press Using the or button select dEFAuLt which will provide moderate noise pr...

Page 31: ...o adjust the flashing digit and the button to transfer control to the next digit and to position the decimal point Finally enter the new figure and return to the FACtor A prompt in the configuration menu by pressing The output from FACtor A will now be in litres which may be scaled to produce required rate and total displays Repeat for input b using the FACtor b function See 5 13 Step 10 Enter the...

Page 32: ...s shown on the lower display while the filter parameters are shown and may be adjusted on the upper display Using the or push button select FiLtEr A from the configuration menu and press The first digit which controls the filter time constant will be flashing and should be set to 2 using the or push button The button will transfer control to the second digit which controls the step response and sh...

Page 33: ...g the or buttons to set each digit and the button to move control to the next digit Pressing will then reset the composite grand total to zero and return the instrument to the CLr Gtot prompt in the configuration menu See 5 23 Step 17 Define the security code Defining a security code prevents unauthorised access to the configuration menu Using the or buttons select CodE from the configuration menu...

Page 34: ...disabled following rate display recalibration Enable both alarm outputs Unable to enter configuration menu Incorrect security code That the correct security code is being used Contact BEKA if code is lost 9 2 Fault finding after commissioning ENSURE PLANT SAFETY BEFORE STARTING MAINTENANCE If a BA588E fails after it has been functioning correctly the following table may help to identify the cause ...

Page 35: ...ssociates or our local agent It is helpful if a brief description of the fault symptoms is provided 9 6 Customer comments BEKA is always pleased to receive comments from customers about our products and services All communications are acknowledged and whenever possible suggestions are implemented ...

Page 36: ...arm include adjustable setpoint alarm delay time and alarm silence time Hysteresis may be applied to rate alarms CAUTION These alarm outputs should not be used for critical safety applications such as a shut down system When the BA588E power supply is turned off or disconnected alarm outputs will open irrespective of whether normally open or normally closed outputs have been selected When designin...

Page 37: ...display equals the setpoint Note setpoints are identified as 5P1r A Alarm 1 Rate Input A 5P1r b Alarm 1 Rate Input b 5P1r Alarm 1 Rate A b or A b 5P1t A Alarm 1 Total Input A 5P1t b Alarm 1 Total Input b 5P1t Alarm 1 Total A b or A b Similarly for alarm 2 setpoints See section 10 3 5 HI LO Alarm function Defines whether the alarm has a high or low function See section 10 3 6 no nC Normally open or...

Page 38: ...38 Fig 14 Alarm menu ...

Page 39: ...and the button to transfer control to the next digit When set as required press to enter the value and return to the setpoint prompt in the alarm sub menu 10 3 6 Alarm function Hi Lo Alarm 1 and Alarm 2 are totally independent both may be Hi or Lo or one may be conditioned as a Hi alarm and the other as a Lo alarm Using the or push button select Hi Lo from the alarm sub menu and press to check or ...

Page 40: ...on which the alarm has occurred the fla5h function alternates the rate or total display between the numerical value and the alarm identification For example if alarm 1 has been activated by a rate alarm occurring on input A the rate display will alternate between the numerical rate value and AL1 plus the input identification in A if 5td has been selected for the lower display configuration di5P 2 ...

Page 41: ... two alarm setpoint prompts Fig 15 Setpoint adjustment from the totalising mode To adjust an alarm setpoint select the required alarm and press which will reveal the existing value with one digit flashing The flashing digit may be adjusted using the or push button followed by the button to move control to the next digit When the required setpoint has been entered pressing will return the display t...

Page 42: ... supplied with an optional 4 20mA output the configuration menu is extended as shown in Fig 17 The 4 20mA output sub menu is accessed via the 4 20 oP function that is located between the Pul5E op and CLr Gtot functions The 4 20mA output sub menu allows the 4 20mA output to be controlled by the composite rate or the composite total display Fig 17 4 20mA output configuration sub menu 10 5 3 Access 4...

Page 43: ...mpt in the 4 20mA output sub menu 11 5 8 Display which corresponds to 20mA output 20 000 The Rate Totaliser composite display which corresponds to a 20 000mA output current is defined by this function Using the or push button select 20 000 in the 4 20mA output sub menu and press which will reveal the existing display with one digit flashing The required display can be entered using the or push but...

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