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Issue: 6

July 2019

BA337E-SS

Rugged one input

Intrinsically safe

pulse input

Rate Totaliser

Issue 6

Содержание BA337E-SS

Страница 1: ...Issue 6 9th July 2019 BA337E SS Rugged one input Intrinsically safe pulse input Rate Totaliser Issue 6...

Страница 2: ...uration and Calibration 6 1 Configuration structure 6 2 Accessing configuration functions 6 3 Summary of configuration functions 6 4 Rate totaliser function function 6 5 Input input 6 6 Input type inp...

Страница 3: ...etpoints from totalisation mode 10 5 Pulse Output 10 5 1 Intrinsic safety 10 5 2 System design 10 5 3 Configuration 10 5 4 Pulse output pul5e op 10 5 5 Enable pulse output enbl 10 5 6 Source of pulse...

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Страница 5: ...tification which is described in Appendix 3 2 OPERATION Fig 1 shows a simplified block diagram of the BA337E SS Rate Totaliser The instrument can accept pulses from most types of flowmeter sensor When...

Страница 6: ...oints when the Rate Totaliser is fitted with optional alarms and the AC5P setpoints function has been enabled See 10 4 13 Access to configuration menu 2 3 Displays The BA337E SS has two digital displa...

Страница 7: ...kely to occur in normal operation Zone 2 explosive gas air mixture not likely to occur and if it does will only exist for a short time In gases that may be used with equipment having a temperature cla...

Страница 8: ...s 3 4 changes the output safety parameters of the Rate Totaliser input terminals 5 6 as shown in the following table This table also shows the types of sensor requiring energising link fitting Output...

Страница 9: ...area as the BA337E SS d Minimum operating voltage of a flowmeter incorporating a NAMUR compliant proximity detector is less than 7 5V The maximum capacitance and inductance that may be safely connecte...

Страница 10: ...y of these terminals are earthed as shown in Figs 2 3 the other common terminals should only be connected to the same earth i e the barrier busbar or to circuits that have 500V rms insulation to earth...

Страница 11: ...s located within the same hazardous area as the Rate Totaliser The following table shows the Rate Totaliser s input switching thresholds when conditioned for use with flowmeters having different outpu...

Страница 12: ...age pulse input Two voltage pulse input ranges are selectable in the BA337E SS Rate Totaliser configuration menu VoLt5 L and VoLt5 H When configured for either of the voltage pulse ranges and terminal...

Страница 13: ...lse source in safe area 4 2 1 Power supply The BA337E SS Rate Totalisers require a minimum of 10V between terminal 1 2 and consumes 10mA without optional backlight plus 6mA when terminals 3 4 are link...

Страница 14: ...put providing the input safety parameters of the proximity detector are equal to or greater than the output safety parameters of the BA337E SS input The flowmeter proximity detector input safety param...

Страница 15: ...area Any switch may be used but a galvanic isolator is required to transfer the contact closure into the hazardous area Fig 4 illustrates how a BA337E SS may be reset from both the safe and the hazar...

Страница 16: ...as the front of the Rate Totaliser complies with Ex p impact and ingress requirements Although mounted in an Ex p panel enclosure the BA337E SS remains Group II Category 1G Ex ia IIC T5 Ga intrinsica...

Страница 17: ...ptive gasket and ensure that it is not damaged before inserting the Rate Totaliser into the panel enclosure aperture c If the enclosure panel is less than 1 0mm thick or is non metallic an optional BE...

Страница 18: ...d showing the requested units of measurement if this information is not supplied when the instrument is ordered a blank card will be fitted A pack of self adhesive scale cards printed with common unit...

Страница 19: ...t any flow occurring during this time is recorded 6 1 Calibration structure Fig 12 shows the BA337E SS calibration structure The rate and total display calibrations are independent which allows the di...

Страница 20: ...iguration menu is shown diagrammatically in Fig 13 When returning to the totalisation mode following reconfiguration the Rate Totaliser will display dAtA followed by 5AVE while the new information is...

Страница 21: ...of litres in 1 000 imperial gallons 5CALE t may be adjusted between 0 0001 and 99999 The total flow display is independent of the rate display See section 6 13 Display Summary of function 5CALE r Rat...

Страница 22: ...restored See section 6 20 Display Summary of function CLr Gtot Reset grand total from configuration menu This function resets the grand total to zero from within the configuration menu when CLr YE5 i...

Страница 23: ...d dEbounCE which configure the Rate Totaliser input and input noise rejection 6 6 Input type inP tYPE inP tYPE is a sub menu in the inPut function which defines the type of flowmeter or input pulse th...

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Страница 26: ...r button will scroll through the three levels When the required level has been selected pressing twice will enter the selection and return the display to the inPut prompt in the configuration menu 6 8...

Страница 27: ...control to the decimal point that may be positioned between any of the digits or may be omitted by moving it to the right of the least significant digit When set as required press to return to the FAC...

Страница 28: ...ate display stability and a fast response to a large rate signal change To check or change the filter select FiLtEr in the configuration menu and press which will reveal the existing settings with the...

Страница 29: ...o change the setting followed by the button twice to enter the change and return to the LoC clr prompt in the configuration menu 6 21 Grand total reset from configuration menu Clr Gtot The grand total...

Страница 30: ...def from the configuration menu and press which will result in a 0000 display with the first digit flashing This is a request to confirm the reset to factory default instruction by entering 5urE Using...

Страница 31: ...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 b...

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Страница 33: ...of four sub functions If Add is not displayed repeatedly press the or button to select Add followed by which will cause the current segment and the total number of lineariser segments to be displayed...

Страница 34: ...is divided by L FACtor which is adjustable between 0 0001 and 99999 for flow applications it should be set to the K factor of the flowmeter K factor is the number of pulses that the flowmeter produces...

Страница 35: ...protection If the Rate Totaliser is subsequently found to miscount the noise rejection can be increased Enter the selection and return to the inPut prompt in the configuration menu by pressing the but...

Страница 36: ...o be displayed in the required engineering units The rate display timebase is determined by t bA5E that is adjusted in Step 11 In this example the rate of flow display is required in imperial gallons...

Страница 37: ...eal the sub menu Again using the or button select the local total reset function clr tot and press This function is required so using the or button select on followed by to return to the clr tot promp...

Страница 38: ...ding 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 s...

Страница 39: ...y contrast and enabling it to be read at night or in poor lighting conditions The BA337E SS backlight is internally powered from the instrument supply therefore no additional wiring or intrinsically s...

Страница 40: ...W The maximum equivalent capacitance and inductance between each set of alarm terminals is Ci 22nF Li 4 H To determine the maximum permissible cable parameters Ci should be subtracted from the maximum...

Страница 41: ...ed followed by which will reveal if the function is on or off The setting can be changed by pressing the or push button followed by the button to return to the alarm sub menu 10 4 5 Type of alarm tYPE...

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Страница 43: ...to enter the value and return to the dELA prompt in the alarm sub menu The Rate Totaliser s alarm annunciator will start flashing immediately an alarm condition occurs and will continue for the delay...

Страница 44: ...ained by operating the and push buttons simultaneously as shown in Fig 19 If the setpoints are not protected by a security code the alarm setpoint prompt 5P1r or 5P1t will be displayed depending upon...

Страница 45: ...circuits Subject to complying with intrinsic safety interconnection requirements the terminals P1 and P2 may be connected to another instrument with an open collector input The pulse output may also b...

Страница 46: ...or push button select 5ourCE in the pulse output sub menu and press to reveal the existing pulse source The function can be changed by pressing the or push button followed by the button to return to 5...

Страница 47: ...t be retained 10 6 4 20mA output The BA337E SS Rate Totaliser can be supplied with a factory fitted galvanically isolated 4 20mA output which may be configured to represent the rate or total display O...

Страница 48: ...te Totalisers rate or total display the values corresponding to 4 and 20mA output are defined in the sub menu Fig 23 4 20mA output configuration sub menu 10 6 4 Access 4 20mA output sub menu 4 20 oP A...

Страница 49: ...g the or push button select 20 000 in the 4 20mA output sub menu and press to reveal the selected rate or total display with one digit flashing The required value can be entered using the or push butt...

Страница 50: ...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 operatio...

Страница 51: ...rtified may be mounted in the same Ex t panel enclosure as the Rate Totaliser for Zone 22 applications providing the surface temperature of the enclosure is not exceeded The Rate Totaliser terminals t...

Страница 52: ...he main section of this manual and both refer to the same standards Therefore the ATEX installation requirements specified in sections 4 5 and Appendix 1 of this manual may be used for IECEx installat...

Страница 53: ...ay therefore also be used for US and Canadian installations subject to compliance with local codes of practice ETL and cETL intrinsic safety codes CL I Div 1 Groups A B C D T5 US IS gas Div cert CL II...

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