BA307E, BA327E, BA308E & BA328E intrinsically safe ... - Ex-Baltic

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85.3 Installation Procedurea. Cut the specified aperture in the panel. Toachieve an IP66 seal between the instrumentenclosure and the instrument panel theaperture must have the tighter tolerancesspecified in Fig 4A and 4B.b. Slide the gasket over the body of theindicator before inserting the instrument intothe panel aperture.c. Firstly ensure that all the panel mountingclamps are closed by turning the knurledscrews fully anti clockwise until the two pipsin the clamp foot align with holes in the clampbody.d. Place a clamp in the recess on each side ofthe indicator, pulling gently to slide it onto thedovetail as shown in Fig 5. Push the knurledscrew slightly forward to engage the threadand tighten by turning clockwise until it is justfinger tight. When both clamps are fittedensure that the gasket behind the front panelbezel is correctly positioned before fullytightening the clamps to secure theinstrument. The maximum recommendedclamp tightening torque is 22cNm (1.95 lbf in)which is approximately equvalent to fingertightplus one half turn. Do not over tighten.e. Four panel mounting clamps are required toachieve an IP66 seal between a BA308E andBA328E indicator and the instrument panel.f. Connect the panel wiring to the rear terminalblock(s) as shown in Figs 4A and 4B. Tosimplify installation, the terminals areremovable so that the panel wiring can becompleted before the instrument is installed.5.4 Scale cardThe indicator’s units of measurement are shownon a printed scale card in a window at the righthand side of the display. The scale card ismounted on a flexible strip that is inserted into aslot at the rear of the instrument as shown in Fig 6.Thus the scale card can easily be changed withoutremoving the indicator from the panel or openingthe instrument enclosure.New indicators are supplied with a printed scalecard showing the requested units of measurement,if this information is not supplied when the indicatoris ordered a blank card will be fitted.A pack of self-adhesive scale cards printed withcommon units of measurement is available as anaccessory from BEKA associates. Custom printedscale cards can also be supplied.To change a scale card, unclip the protruding endof the flexible strip by gently pushing it upwardsand pulling it out of the enclosure. Peel theexisting scale card from the flexible strip andreplace it with a new printed card, which should bealigned as shown below. Do not fit a new scalecard on top of an existing card.Install the new scale card by gently pushing theflexible strip into the slot at the rear of the indicator,when it reaches the internal end-stop secure it bypushing the end of the flexible strip downwards sothat the tapered section is held by the rear panel.Align the selfadhesiveprintedscale card ontothe flexible stripand insert the stripinto the indicatoras shown below.Fig 5 Fitting panel mounting clampsFig 6 Inserting flexible strip carrying scale cardinto slot at the rear of indicator.
96. CONFIGURATION AND CALIBRATIONIndicators are configured and calibrated via thefour front panel push-buttons. All theconfiguration functions are contained in an easy touse intuitive menu that is shown diagrammaticallyin Fig 7.Each menu function is summarised in section 6.1and includes a reference to more detailedinformation. When the indicator is fitted with alarmsadditional functions are added to the menu whichare described in section 9.3Throughout this manual push-buttons are shownas P, E, ▼ or ▲, and legends displayed by theindicator are shown within inverted commas e.g.'CAL' and ' ALr2'.Access to the configuration menu is obtained byoperating the P and E push-buttonssimultaneously. If the indicator security code is setto the default 0000 the first parameter 'FunC' willbe displayed. If a security code other than thedefault code 0000 has already been entered, theindicator will display 'CodE'. Pressing the P buttonwill clear this prompt allowing each digit of thecode to be entered using the ▲ and ▼ pushbuttonsand the P button to move control to thenext digit. When the correct four digit code hasbeen entered pressing E will cause the firstparameter 'FunC' to be displayed. If the code isincorrect, or a button is not pressed within twentyseconds, the indicator will automatically return tothe display mode.Once within the configuration menu the requiredparameter can be reached by scrolling through themenu using the ▲ and ▼ push-buttons as shownin Fig 6. When returning to the display modefollowing recalibration or a change to any function,the indicator will display ‘dAtA’ followed by ‘SAVE’while the new information is stored in non-volatilememory.All new indicators are supplied calibrated asrequested at the time of ordering. If calibration isnot requested, indicators will be configured asfollows:BA307E BA327EBA308E BA328EAccess code ‘CodE’ 0000 0000Function ‘FunC’ Std StdDisplay at 4mA ‘Zero’ 0.0 0.00Display at 20mA ‘SPAn’ 100.0 100.00Resolution ‘rESn’ 1 digit 1 digitBargraph start ‘BarLo’ ----- 0.00Bargraph finish ‘BarHi’ ----- 100.00P button in display mode ‘C—P’ % %Tare ‘tArE’ Off OffDefault configuration can easily be changed onsite.6.1 Summary of configuration functionsThis section summarises each of the mainconfiguration functions and includes a crossreference to a more detailed description. Fig 7illustrates the location of each function within theconfiguration menu. The lineariser and theoptional factory fitted alarms are describedseparately in sections 7 and 9.3 of this manual.Display Summary of function'FunC''rESn''dP''CAL''SEt''bAr'Indicator functionDefines the relationship between the4/20mA input current and the indicatordisplay. May be set to:‘Std’ Standard linear relationship‘root’‘Lin’See section 6.2Square root extraction16 segment adjustablelineariser – see section 7.Display resolutionDefines the resolution of the leastsignificant display digit. May be set to‘1’, ‘2’, ‘5’ or ‘10’ digits.See section 6.3Decimal pointPositions a dummy decimal pointbetween any of the digits or turns it off.See section 6.4Calibration of the digital displayusing an external current source.Enables the zero and span of theindicator to be adjusted using anexternal current source such as acalibrator. When used with an accuratetraceable current source this is thepreferred method of calibration.See section 6.5Calibration of display using internalreferences.Enables the zero and span of theindicator to be adjusted without theneed for an accurate input current ordisconnection from the 4/20mA loop.See section 6.6Bargraph format and calibrationOnly BA327E & BA328E have bargraphThe bargraph may be conditioned tostart from left, right or centre of thedisplay, or it may be disabled. Whenoptional alarms are fitted it can alsodisplay both alarm setpoints and themeasured value.The bargraph may be calibrated to startand finish at any value within theindicator’s calibrated digital display.See section 6.7
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Page 3 and 4: 31. DESCRIPTIONThese panel mounting
Page 5 and 6: 53.4 4/20mA inputThe input safety p
Page 7: 75. INSTALLATION5.1 LocationAll the
Page 12 and 13: 126.4 Position of the decimal point
Page 14: 147. LINEARISERA sixteen segment, s
Page 17 and 18: 17When the required number of break
Page 19: 199. ACCESSORIES9.1 Scale cardAll m
Page 22 and 23: 229.3.4 Alarm enable: ‘EnbL’Thi
Page 24 and 25: 249.3.14 Displaying setpoints on ba
Page 26 and 27: 26Appendix 1Dust certificationA1.0

BA307E, BA327E, BA308E & BA328E intrinsically safe ... - Ex-Baltic

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