BEKA BA334D, Manual

Page 1: ...Issue 13 3rd February 2011 BA334D Intrinsically safe Externally powered pulse input field mounting rate totaliser Issue 13 ...

Page 2: ...Lower display 6 8 Rate scale factor 6 9 Timebase 6 10 Rate filter 6 11 Total scale factor 6 12 Clip off 6 13 Local reset 6 14 Resetting grand total 6 15 Security code 7 Calibration Example 7 1 Calibration procedure 8 Maintenance 8 1 Fault finding during commissioning 8 2 Fault finding after commissioning 8 3 Servicing 8 4 Routine maintenance 8 5 Guarantee 8 6 Customer comments 9 Accessories 9 1 Un...

Page 3: ...e be used with almost any type of pulse output flowmeter The total display may be reset to zero by a remote switch contact the internal switches or via the optional keypad on the outside of the instrument Optional accessories enable the flow rate to be transmitted to other equipment as an isolated 4 20mA analogue signal and the total flow to be transmitted as a pulse signal Optional alarms which m...

Page 4: ... Testing Services ITS confirming compliance with the European ATEX Directive 94 9 EC for Group II Category 1 gas and dust atmospheres EEx ia IIC T5 The instrument bears the Community Mark and subject to local codes of practice may be installed in any of the European Economic Area EEA member countries ATEX certificates are also acceptable for installations in Switzerland This manual describes insta...

Page 5: ... to terminals 3 and 4 The BA334D system certificates specify maximum permitted cable parameters when a 28V 300Ω Zener barrier or galvanic isolator is connected to these terminals 3 3 2 Contact 2 wire proximity detector or open collector input Terminals 5 and 6 are intended for connection to a switch contact a certified open collector output or a certified intrinsically safe 2 wire NAMUR proximity ...

Page 6: ...y for more than two seconds See 6 12 3 5 Zones gas groups and T rating The BA334D has been issued with an EC Type Examination certificate confirming that it complies with the requirements for Group II Category 1 G EEx ia IIC T5 Tamb 40 to 60o C specified in the ATEX Directive When connected to a suitable system the BA334D may be installed in Zone 0 explosive gas air mixture continuously present Zo...

Page 7: ...rriers that may be used Fig 2 illustrates the basic circuit that is used for all BA334D installations protected by Zener barriers For simplicity connections for the optional pulse output 4 20mA output and backlight are included in the appendix to this manual Alternatively the pulse source may be located in the safe area Fig 3 shows how an additional Zener barrier is used to transfer the signal to ...

Page 8: ...pparatus and may be directly connected to any certified intrinsically safe voltage source within the hazardous area which can withstand a 500V rms insulation test to earth for one minute and has output parameters equal to or less than Uo 28V dc Io 100mA dc Po 0 7W This enables the BA334D to be connected directly to most flowmeters incorporating a certified intrinsically safe magnetic pick off or a...

Page 9: ...e source in safe area 4 3 1 Power supply The BA334D galvanic isolator system certificates list a wide range of certified galvanic isolators that may be used to power the rate totaliser If using the entity concept to select an isolator in addition to matching the safety parameters the isolator must be capable of supplying at least 25mA at 10Vdc to the BA334D 4 3 2 Pulse input As shown in Fig 4 the ...

Page 10: ... for simple apparatus They may be directly connected to any certified intrinsically safe voltage source within the hazardous area providing it can withstand a 500Vrms insulation test to earth for one minute and has output parameters equal to or less than Uo 28V dc Io 100mA dc Po 0 7W This enables the BA334D to be connected directly to most flowmeters incorporating a certified intrinsically safe ma...

Page 11: ...s supplied with a bonding plate to ensure electrical continuity between the three conduit cable entries 5 2 Installation Procedure Fig 6 illustrates the instrument installation procedure a Remove the instrument terminal cover by unscrewing the two captive A screws b Mount the instrument on a flat surface and secure with two M6 screws through the B holes Alternatively use one of the mounting kits d...

Page 12: ...12 Fig 7 Dimensions and terminal connections ...

Page 13: ...total scale factor SCALE t Total flow is continuously added to the grand total The BA334D displays real decimal points Moving the position of a decimal point in a scale factor will therefore affect the instrument calibration The BA334D updates its total flow calculation twice per second If the instrument is used for batching applications this resolution may define the accuracy of the system Note T...

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Page 15: ...ISPLAY 2 Lower display Turns the lower display which normally shows rate on or off See section 6 7 Display Description of function SCALE r Rate Scale Factor Defines the arithmetic relationship between the pulse input frequency and the rate display May be adjusted between 0 001 and 99999999 When used with a flowmeter SCALE r should be set to the flowmeter K factor pulses per unit of measurement if ...

Page 16: ...ing Up or Down will scroll through the five options UOLts Voltage pulse input Threshold 1V and 3V 5kHz max Input terminals 3 and 4 COIL Low voltage pulse Threshold 20mV peak 5kHz max Input terminals 3 and 4 Pr dEt NAMUR proximity detector Threshold 1 2 and 2 1mA 5kHz max Input terminals 5 and 6 COntACt Switch contact Threshold 100 and 1000Ω 100Hz max Input terminals 5 and 6 OP COL Open collector T...

Page 17: ... in the rate scale factor move the flashing digit to the left hand side of the required decimal point position and simultaneously press the Up and Down buttons When the required rate scale factor has been entered press E to store the number and return to the main menu 6 9 Timebase t bASE The timebase multiplies the rate display by 1 60 or 3 600 depending upon whether the BA334D is required to disp...

Page 18: ...To position the decimal point in the scaling factor move the flashing digit to the left hand side of the required decimal point position and simultaneously press the Up and Down buttons When the required total scale factor has been entered press E to store the number and return to the main menu 6 12 Clip off CLIP OFF To prevent totalisation of very low flow rates that over long periods may result ...

Page 19: ...rotected by a four digit security code which must be entered before access to the programme menu is granted New instruments are programmed with the default security code 0000 which allows unrestricted access to all programming functions without entering a security code To enter a new security code select COdE from the menu and press P which will cause the instrument to display the current security...

Page 20: ...Up or Down button scroll through the main menu until InPut is displayed then press P to reveal the existing setting Select COIL the input for a magnetic pick off using the Up or Down button and return to the InPut prompt in the main menu by pressing E Note The BA334D has two pairs of input terminals 3 4 for voltage inputs and 5 6 for switch contact proximity detector or open collector inputs Ensur...

Page 21: ...ic metre so the BA334D is required to display 1 cubic metre for every 1 050 x 1 000 pulses received SCALE t should therefore be set to 1 050 000 Select SCALE t from the main menu and press P which will reveal the current setting with one digit flashing To position the decimal point operate the P push button to move the flashing digit to the least significant position Pressing the Up and Down butto...

Page 22: ...strument to the CLr Gtot prompt in the main menu Step 12 Define the security code Defining a security code prevents unauthorised access to the programme functions Select COdE from the main menu and press P which will reveal the existing security code Using the Up and Down buttons enter the new code 1209 digit by digit The P button will transfer control between digits When the new code has been ent...

Page 23: ...n change Re enable both alarms 8 2 Fault finding after commissioning ENSURE PLANT SAFETY BEFORE STARTING MAINTENANCE Live maintenance is permitted on intrinsically safe equipment installed in a hazardous area but only certified test equipment should be used unless a gas clearance certificate is available If a BA334D fails after it has been functioning correctly the following table may help to iden...

Page 24: ...re be the alarm condition Alarm annunciators on the instrument display indicate the status of both alarms If an alarm delay or silence time has been selected the annunciator will flash during the delay or silence period Programmable functions for each alarm include adjustable setpoint alarm delay time and alarm accept time Hysteresis may be applied to rate alarms The BA334D total display is up dat...

Page 25: ...lay Description of function EnbL Alarm enable Enables or disables the alarm function without changing the alarm parameters See section 9 2 4 tYPE Type of alarm Defines whether the alarm operates on the rate or total display See section 9 2 5 SPr1 Alarm setpoint 1 or Adjusts the alarm setpoint The SPt1 alarm is activated when the rate or total display equals the setpoint Note SPr1 is displayed for ...

Page 26: ...splays have been recalibrated or the alarm type has been changed Both alarms must therefore be enabled after calibration changes 9 2 5 Type of alarm tYPE Alarm 1 and Alarm 2 may both be rate or total alarms or one may be conditioned for rate and the other for total To check or change the type of alarm select tYPE from the alarm menu and press P which will reveal the current setting The function ca...

Page 27: ...eresis select HStr from the alarm menu and press P which will reveal the existing figure Each digit can be adjusted using the Up and Down push buttons and the P button to move to the next digit When the required hysteresis has been entered press E to return to the alarm menu e g A BA334D calibrated to display a flow of 0 to 5000 with a high alarm set at 4000 and hysteresis of 100 will perform as f...

Page 28: ...to the setpoints in the display mode by pressing the P and Up buttons simultaneously New instruments with alarms are supplied with the security code set to 0000 9 2 13 Adjusting alarm setpoints from the display mode Access to the two alarm setpoints from the indicator display mode is obtained by operating the P and Up push buttons simultaneously as shown in Fig 14 If the setpoints are not protecte...

Page 29: ...depends upon the current flowing through the backlight This is determined by the supply voltage and the end to end resistance of the Zener barrier or output resistance of the galvanic isolator Brilliance will not be significantly reduced until the current falls below 20mA Backlight current Vsupply 18 End to end resistance of barrier or output resistance of galvanic isolator 9 4 Pulse output The BA...

Page 30: ...icate of the circuit connected to the BA334D Fig 16 shows how the pulse output circuit may be powered from the BA334D supply to drive a counter in the safe area via a diode return barrier 9 5 4 20mA output The BA334D can be supplied with an isolated 4 20mA current sink which may be programmed to produce an analogue output proportional to the whole or part of the rate display 9 5 1 Intrinsic safety...

Page 31: ... required pressing P will transfer control to the next digit When the flow rate corresponding to an output current of 4mA has been entered press the E button to return to the 4 000 prompt To enter the rate display corresponding to an output current of 20 000mA press the Up or Down button to select the 20 000 prompt followed by P to reveal the current setting This may be changed in the same way as ...

Page 32: ...ips for 60 to 80mm outside diameter pipes BA393 Heavy duty stainless steel bracket secured by a single V bolt Will clamp to any pipe with an outside diameter between 40 and 80mm 9 8 Stem mounting kit The BA395 stem mounting kit comprises a short length of stainless steel conduit with a male M20 x 1 5 thread at both ends Allows the BA334D to be mounted directly onto a flow transmitter ...

Page 33: ...g commissioning 8 1 after commissioning 8 2 FILtEr 6 10 Flow indicator 2 3 FM Approval Appendix 2 Galvanic isolators 4 3 Gas groups 3 5 Grand total 2 2 clear 6 14 Guarantee 8 5 HI LO 9 2 3 9 2 7 HStr 9 2 3 9 2 9 Subject Section InPut 6 5 Installation 5 Instrument identification 9 1 Intrinsic safety 3 LOC rSEt 6 13 Local reset 6 13 Location 5 1 Maintenance 8 0 routine 8 4 Mounting kits pipe 9 7 ste...

Page 34: ...ive atmosphere in the form of a cloud of combustible dust in air is likely to occur occasionally in normal operation Zone 22 explosive atmosphere in the form of a cloud of combustible dust in air is not likely to occur in normal operation but if it does occur will only persist for a short period Be used with dusts having a Minimum Ignition Temperature of Dust cloud 120o C Dust layer on BA334D 155o...

Page 35: ...ANSI ISA RP12 06 01 Installation of Intrinsically Safe Systems for Hazardous Classified Locations and with the National Electrical Code ANSI NFPA70 The BA334D has a T4 rating at ambient temperatures up to 60o C and may be used with the following gases and dusts Intrinsic Safety Division 1 or 2 Class I Group A B Group C Group D Class II Group E F G Class III Zone 0 1 or 2 Class 1 Group IIC Group II...

Page 36: ... PULSE SEE NOTE 5 VOLTAGE PULSE PROXIMITY DETECTOR OR SWITCH CONTACT SEE NOTE 5 4 6 5 3 INPUT INPUT BA334D BA338C Entity Parameters Terminals 1 2 Ui 30V Ii 100mA dc Pi 0 7W Ci 0 02µF Li 0 02mH Terminals 7 8 Ui 30V dc Uo 3 8V dc Ii 100mA Io 1 6mA dc Pi 0 7W Po 2mW Ci 0 02µF Ca 1000µF Li 0mH La 1000mH Terminals B1 B2 Ui 30V dc Ii 159mA dc Pi 0 8W Ci 0 04µF Li 0 03mH Terminals P1 P2 Ui 30V dc Ii 100m...

Page 37: ...TION SEE NOTE 6 OR INPUT INPUT 3 5 6 4 SEE NOTE 4 SEE NOTE 4 BA334D BA338C Entity Parameters Terminals 1 2 Ui 30V Ii 100mA dc Pi 0 7W Ci 0 02µF Li 0 02mH Terminals 7 8 Ui 30V dc Uo 3 8V dc Ii 100mA Io 1 6mA dc Pi 0 7W Po 2mW Ci 0 02µF Ca 1000µF Li 0mH La 1000mH Terminals B1 B2 Ui 30V dc Ii 159mA dc Pi 0 8W Ci 0 04µF Li 0 03mH Terminals P1 P2 Ui 30V dc Ii 100mA dc Pi 0 7W Ci 0 02µF Li 0 02mH Termin...

Page 38: ...Ca equal to or greater than Ccable Ci 5 Hazardous classified location equipment complying with the requirements of note 4 and the input parameters listed on Sheets 1 and 2 for Terminals 3 and 4 and 5 and 6 or simple apparatus 6 Simple apparatus or FM approved associated apparatus with contacts having entity parameters complying with the following requirements Uo or Vt equal to or less than Ui Io o...

Page 39: ...n a hazardous classified location the BA334D shall be fitted Any metallic or plastic cable gland or conduit hub that provides SSTG 1 STG 1 STAG 1 Permitted gland or conduit hub Killark Glands together and grounded 9 10 CAUTION CMCXAA050 MCR050 MCX050 Metallic glands and hubs must be grounded see note 9 Class I Class II and III 8 Class CHMG 50DT Crouse Hinds Myler hubs the required environmental pr...

Page 40: ...US CLASSIFIED LOCATION UNCLASSIFIED LOCATION SEE NOTE 7 VOLTAGE PULSE PROXIMITY DETECTOR OR SWITCH CONTACT SEE NOTE 3 VOLTAGE PULSE SEE NOTE 3 5 6 INPUT 3 4 INPUT BA334D BA338C Terminals 1 2 Vmax 30V Ci 0 02µF Li 0 02mH Terminals 7 8 Vmax 30V dc Voc 3 8V dc Ci 0 02µF Isc 1 6mA Li 0mH Ca 1000µF La 1000mH Terminals B1 B2 Vmax 30V dc Ci 0 04µF Li 0 03mH Terminals P1 P2 Vmax 30V dc Ci 0 02µF Li 0 02mH...

Page 41: ... UNCLASSIFIED LOCATION HAZARDOUS CLASSIFIED LOCATION SEE NOTE 7 INPUT IN UNCLASSIFIED LOCATION 6 3 4 5 INPUT INPUT BA334D BA338C Terminals 1 2 Vmax 30V Ci 0 02µF Li 0 02mH Terminals 7 8 Vmax 30V dc Voc 3 8V dc Ci 0 02µF Isc 1 6mA Li 0mH Ca 1000µF La 1000mH Terminals B1 B2 Vmax 30V dc Ci 0 04µF Li 0 03mH Terminals P1 P2 Vmax 30V dc Ci 0 02µF Li 0 02mH Terminals C1 C2 Vmax 30V dc Ci 0 002µF Li 0 008...

Page 42: ...able Li Ca equal to or greater than Ccable Ci 3 Hazardous classified location equipment complying with the following requirements and the input parameters listed on Sheet 1 for Terminals 3 and 4 and 5 and 6 or Voc equal to or less than Vmax La equal to or greater than Lcable Li Ca equal to or greater than Ccable Ci 4 To maintain NEMA 4X protection between the BA338C and the mounting panel Four pan...

Page 43: ...n a hazardous classified location the BA334D shall be fitted Any metallic or plastic cable gland or conduit hub that provides SSTG 1 STG 1 STAG 1 Permitted gland or conduit hub Killark Glands together and grounded 6 7 CAUTION CMCXAA050 MCR050 MCX050 Metallic glands and hubs must be grounded see note 7 Class I Class II and III 5 Class CHMG 50DT Crouse Hinds Myler hubs the required environmental pro...