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BEKA BA384NG Manual

Ex na and ex tc two input rate totaliser
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BA384NG
Ex nA and Ex tc
Two input
Rate Totaliser
Issue 6
Issue: 6
9
th
July 2019

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Summary of Contents for BEKA BA384NG

  • Page 1 BA384NG Ex nA and Ex tc Two input Rate Totaliser Issue 6 Issue: 6 July 2019...

  • Page 2: Table Of Contents

    Enable pulse output: enbl Source of output pulse: 5ource Divide output pulse frequency: divide Define output pulse width: duration 8.7 Stored pulses The BA384NG is CE marked to show compliance with European Explosive Atmospheres Directive 2014/34/ EU and European EMC Directive 2014/30/EU.
  • Page 3 9. CONFIGURATION EXAMPLE Appendix 1 ATEX dust certification Configuration procedure Appendix 2 IECEx certification 10. MAINTENANCE 10.1 Fault finding during commissioning Appendix 3 ETL and cETL certification for 10.2 Fault finding after commissioning installation in USA and Canada. 10.3 Servicing 10.4 Routine maintenance 10.5 Guarantee 10.6 Customer comments...

  • Page 5: Description

    1. DESCRIPTION 2. OPERATION The BA384NG is an Ex nA and Ex tc certified, field Fig 1 shows a simplified block diagram of the mounting rate totaliser with two pulse inputs, BA384NG Rate Totaliser. The instrument has two primarily intended for use with two flowmeters in separate inputs 'A' and 'b' which can accept pulses Zones 2 or 22.

  • Page 6: Initialisation

    Initialisation Controls Each time power is applied to a BA384NG The BA384NG is controlled and configured via four initialisation is performed. After a short delay the front panel push buttons. In the totalising mode i.e. following display sequence occurs: when the instrument is displaying rate and total flow...

  • Page 7: Displays

    Displays 2.3.1 Display over-range The BA384NG has two digital displays and Over-range of the upper eight digit display or the associated annunciators, plus a flow indicator as lower six digit display is indicated by all the digits shown on the front cover of this manual.

  • Page 8: Atex Ex Na Certification

    3. CERTIFICATION Be used with gases in groups: The BA384NG has ATEX, IECEx and ETL Ex nA gas Group A propane and Ex tc dust certification. The main sections of Group B ethylene this instruction manual describes ATEX Ex nA gas...

  • Page 9: Power Supply

    This allows the pulse output to be connected to any terminals 3 & 4 of the BA384NG for input A and dc circuit providing that in normal operation the between terminals 7 & 8 for input b, connects an maximum supply voltage is not greater than 30V dc internal 7V, 6mA supply to the respective input.

  • Page 10: System Design For Hazardous Areas

    SYSTEM DESIGN FOR HAZARDOUS 4.1 Power supply AREAS. The BA384NG Rate Totaliser requires a minimum of 10V between terminal 1 & 2 and consumes: When correctly installed in Zone 2 the BA384NG 10mA without optional backlight Rate Totaliser may be connected to almost any plus when terminals 3 &...

  • Page 11: Pulse Inputs

    Pulse inputs The flowmeters may also be located in the safe area As shown in Fig 3 both BA384NG Rate Totaliser as shown in Fig 4. inputs may be connected to Zone 2 hazardous area flowmeters with a wide variety of outputs, or to safe area flowmeters as shown in Fig 4.

  • Page 12: Voltage Pulse Input

    Any switch may be used. Fig 3 illustrates the flowmeter (proximity detector) is less than 7.5V. how a BA384NG may be reset from both the safe The flowmeter should be located in the same and the hazardous area.
  • Page 13 Ron is less than 60Ω + 3V. direct: Annunciator continuously activated Fig 5 shows a BA384NG Rate Totaliser installed in Zone 2 with the pulse output connected to a safe area load. The pulse output flows through R1 resulting in a voltage output of about 20V in the safe area when the pulse output is activated.

  • Page 14: Installation

    5. INSTALLATION Location The BA384NG Rate Totaliser is housed in robust IP66 glass reinforced polyester (GRP) enclosure incorporating an armoured glass window and stainless steel fittings making it suitable for exterior mounting in most industrial Zone 2 on-shore and off-shore installations. The Rate Totaliser should be positioned where the display is not in continuous direct sunlight.

  • Page 15: Emc

    The BA384NG complies with the requirements of the European EMC Directive 2014/30/EU. For specified immunity all wiring should be in screened twisted pairs, with the screens earthed at one point in the safe area. Units of measurement and tag marking on scale card.

  • Page 16: Configuration And Calibration

    Clip-off for input A* CLP . oFF-A 0000. 0 calibrated to display the same engineering units. When the BA384NG Rate Totaliser is in the totalising Local total reset Clr tot mode the following displays can be selected using Local grand total reset Clr Gtot the &...

  • Page 20: Accessing Configuration Functions

    Configures the Rate Totaliser input to changes will not be stored. When configuring a accept one of six types of input: BA384NG Rate Totaliser it is therefore advisable to Open collector ● oP. C oL occasionally return to the totalising mode to ensure Voltage pulse <1 >3V...
  • Page 21 Display Summary of function Display Summary of function Decimal points dEbounCE Defines the position of the decimal point Defines level input de-bounce in both the rate and total displays. applied to the pulse input to prevent See section 6.12 false counting: dEFAuLt HEAVY Input A flowmeter K-factor *...
  • Page 22 Display Summary of function Display Summary of function Timebase External reset t-bA5E e clr Selectable multiplier allowing flow rate This function defines which totals are to be displayed in units per second, per reset to zero when terminals RS1 and minute or per hour.

  • Page 23: Rate Totaliser Function: Function

    6.4 Rate Totaliser function: FunCtion One of following six types may be selected for each This function determines whether the BA384NG input: Rate Totaliser has a standard linear function, or if the Switching two separate adjustable sixteen segment linearisers, thresholds...

  • Page 24: Display Update Interval: Update

    The Rate Totaliser’s maximum counting frequency 6.9 Composite display: Count depends upon the debounce level selected, the The BA384NG can produce a composite rate and shape of the input pulse and its amplitude. total display from the sum or difference of Input-A following table assumes a square wave input and is and Input-b.

  • Page 25: Position Of Decimal Points: Dp

    6.13 Flowmeter K-factor: FACtor-A * Display The rate totaliser pulse input A is divided by selected Lower display di5p-2 setting in FACtor-A, which is adjustable between 0.0001 and using the configuration menu. & or * 99999. For flow applications FACtor-A should be buttons in set to the K-factor of the flowmeter connected to the tota-...

  • Page 26: Rate Scale Factor: 5Cale. R -A

    6.15 Rate scale factor*: 5CALE . r-A 6.17 Display filter*: FiLtEr-A 5CALE . r-A is a dividing factor adjustable between The digital display filter associated with each input 0.0001 and 99999 that enables the flow rate to be independent adjustable parameters displayed in the required engineering units.

  • Page 27: Clip-Off: Clp. O Ff-A

    HOLD annunciator will be the grand total display to zero with the BA384NG in activated. The flow indicator will continue to rotate...

  • Page 28: External Reset: E Clr

    5urE has been entered, pressing the ) button will menu select CL . Gtot and press ( which will cause reset the BA384NG to the factory defaults and return the instrument to display Clr . No with no flashing. the instrument to the totalising mode.

  • Page 29: Linearisers

    7. LINEARISERS 7.1 Flowmeter specification Flowmeters are usually supplied with a calibration The BA384NG Rate Totaliser can produce accurate certificate specifying the average K-factor and the results when used with flowmeters having K-factors flow range over which it applies. For use over...

  • Page 31: Add A Segment: Add

    7.3 Copy A lineariser configuration successive breakpoints must be monotonic to b lineariser: Copy A2b i.e. the pulse input frequency must increase When both inputs of the BA384NG Rate Totaliser with breakpoint number. See 7.8 are connected to separate flowmeters with the same non-linearity,...

  • Page 32: Remove A Segment: Del

    7.5 Remove a segment: dEL ( which will reveal the current input frequency with dEL is a sub-menu in the FACtor-A function that one digit flashing. The value of the flashing digit enables any segment to be removed from the may be changed by pressing the &...

  • Page 33: Lineariser Error Messages

    segment may be selected using & or * push button. When L_FACtor for all of the segments has been entered, return to the FACtor-A prompt in the configuration menu by operating the ) push button twice. 7.8 Lineariser error message If an attempt is made to position a segment at an input frequency which is not greater than the frequency of the preceding segment, or at an input...

  • Page 34: Pulse Output

    8.2 Access Pulse output sub-menu: PuL5E . oP . Access the Rate Totaliser configuration menu as The BA384NG Rate Totaliser pulse output may be described in section 6.2. Using the & or * push configured as a synchronous duplicate of pulse input buttons scroll though the menu until PuL5E .

  • Page 35: Source Of Output Pulse: 5Ource

    Stored pulses which have yet to be transmitted will not be retained when the BA384NG Rate Totaliser power supply is interrupted. 1000 10000 Using the & or * push button select diVidE in the pulse output sub-menu and press ( to reveal the existing divisor.

  • Page 36: Configuration Example

    Enter the selection and return to the inPut-A The BA384NG is required to display rate of flow in prompt in the configuration menu by imperial gallons per hour with a resolution of one pressing the ) button twice.
  • Page 37 Step 7 Lower display Finally, enter the new figure and return to Using the & or * button select di5P-2 the FACtor-A prompt in the configuration in the configuration menu and press menu by pressing ). The output from ( to select if the lower display function. FACtor-A will now be in litres which may The Rate Totaliser is required to display be scaled to produce required rate and...
  • Page 38 In this example the operator is required adjusted on the upper display. to reset the total displays but not the composite grand total display when the BA384NG Rate Totaliser is in the totalising mode.
  • Page 39 5urE using the & In the totalising mode, operating the & or * buttons to set each digit and the or * button will scroll the BA384NG ( button to move control to the next display between Input-A, Input-b and the digit.

  • Page 40: Maintenance

    EN 60079-17 Electrical installations inspection and 10.1 Fault finding during commissioning maintenance permits live maintenance in Zone 2 if a If a BA384NG fails to function during commissioning risk analysis demonstrates that this does not the following procedure should be followed: introduce an unacceptable risk.

  • Page 41: Guarantee

    10.5 Guarantee Instruments 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. 10.6 Customer comments BEKA is always pleased to receive comments from customers about our products and services.

  • Page 42: Accessories

    11.2 Legend plate The BA384NG can also be supplied with a blank or When the BA384NG power supply is turned off or custom laser engraved stainless steel legend plate - disconnected, alarm outputs will open irrespective of see Fig 7.

  • Page 43: Ex Na Certification

    Zone 1 or 2 of a hazardous area, or equipment located in a safe area. 11.4.3 Configuration and adjustment When a BA384NG is supplied with alarms the configuration menu is extended as shown in Fig 16. Fig 15 shows a typical application in which a Zone 2...
  • Page 44 Display Summary of function Display Summary of function Alarm enable Alarm silence time EnbL Enables or disables the alarm without Defines the time that the alarm output changing the alarm configuration. remains in the non-alarm condition See section 11.3.4 following acceptance of an alarm. See section 11.

  • Page 46: Alarm Enable: Enbl

    H5tr prompt in the alarm sub-menu. All setpoints are adjusted in the same way. Using e.g. A BA384NG configured to display a flow rate of the & or * push button select the required 0 to 5000, with a high alarm set at 4000 and...

  • Page 47: Alarm Delay: Dela

    When the alarm silence time is set to any figure ( and * buttons. An operator can therefore other than zero, the BA384NG Rate Totaliser adjust the alarm setpoints without having access to ( push button becomes an alarm accept button.

  • Page 48: Adjusting Alarm Setpoints From Totalising Mode

    11.3.14 Adjusting alarm setpoints from the To adjust an alarm setpoint select the required alarm totalising mode. and press ( which will reveal the existing value Access to the two alarm setpoints from the Rate with one digit flashing. The flashing digit may be Totaliser totalising mode is obtained by operating the adjusted using the &...

  • Page 49: 4/20Ma Output

    11.4 4/20mA output To comply with the requirements of EN 60079-14 The BA384NG Rate Totaliser can be supplied with a Electrical installations design, selection and erection, factory fitted galvanically isolated 4/20mA output each of the wires entering the hazardous area...

  • Page 50: Access 4/20Ma Output Sub-Menu: 4-20 Op

    11.4.3 Access 4/20mA output sub-menu: 4-20 oP 11.4.7 Display which corresponds to 20mA Access the Rate Totaliser's configuration menu as output: 20 . 000 described in section 6.2. Using the & or * push The Rate Totaliser display which corresponds to a buttons scroll though the menu until 4-20 oP is 20.000mA output current is defined by this function.
  • Page 51 Special conditions for safe use are specified by the Ex ic tc certificate indicated by the certificate A1.0 ATEX dust certification number's 'X' suffix. These state that the BA384NG In addition to ATEX Ex nA certification permitting Rate |Totaliser should be:...
  • Page 52 ATEX safety parameters described in the main section and Appendix 1 of this manual. The IECEx certificate may be downloaded from the BEKA associates or the IECEx website, or may be requested from the BEKA sales office. A2.2...
  • Page 53 ETL & cETL certification for installations in USA and Canada. A3.0 cETL Mark For installations in the USA and Canada, the BA384NG Rate Totaliser has ETL and cETL Ex nA and Ex tc approval, Control Number 4008610. Copies of the Authorisation to Mark may be down loaded...

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