BEKA BA304ND Manual Download Page 1 | Manualshive

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background image

issue: 8

4

th

March 2014

BA304ND

Type nL certified

loop-powered

3½ digit field

mounting indicator

issue: 8

Only for replacement use after May 2013.

Use BA304NE for new applications

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Summary of Contents for BA304ND

Page 1: ...issue 8 4th March 2014 BA304ND Type nL certified loop powered 3 digit field mounting indicator issue 8 Only for replacement use after May 2013 Use BA304NE for new applications...

Page 2: ...on example 6 6 Over and under range 7 Maintenance 7 1 Fault finding during commissioning 7 2 Fault finding after commissioning 7 3 Servicing 7 4 Routine maintenance 7 5 Guarantee 7 6 Customer comments...

Page 3: ...wer the analogue to digital converter and liquid crystal display The voltage developed across R1 which is proportional to the 4 20mA input current provides the input signal for the analogue to digital...

Page 4: ...mperatures between 20 and 60 C Used with gases in groups Group A propane Group B ethylene Group C hydrogen Used with gases having a temperature classification of T1 450 C T2 300 C T3 200 C T4 135 C or...

Page 5: ...alyser drives a BA304ND Again it is necessary to ensure that the loop complies with the two design requirements listed in section 4 1 Fig 3 Remote indication 5 INSTALLATION 5 1 Location The BA304ND in...

Page 6: ...re 5 3 EMC The BA304ND complies with the requirements of the European EMC Directive 2004 108 EC For specified immunity all wiring should be in screened twisted pairs Fig 5 Dimensions and terminal conn...

Page 7: ...plug in link shown in Fig 6 When calculating the required span and zero settings the decimal point should be ignored 6 4 Reverse action Normally the BA304ND display increases as the input current inc...

Page 8: ...8 Fig 6 Position of plug in links and potentiometers shown with control cover removed...

Page 9: ...n not enter the enclosure Before replacing control terminal covers ensure that the sealing gaskets are undamaged and free from dirt and foreign bodies If a BA304ND fails after it has been functioning...

Page 10: ...dirt and foreign bodies To gain access to the display label remove the terminal cover by unscrewing the two A screws which will reveal two concealed D screws Unscrew the four D screws and carefully l...

Page 11: ...ely clip off can be selected which will force the display to zero at flows below 5 4 04mA The location of the clip off link is shown in Fig 7 Access to the link is gained by carefully removing the ind...

Page 12: ...d wiring are required but the indicator voltage drop is increased Alternatively the separatly powered backlight has a bright orange output which enhances daylight viewing but additional field wiring a...

Page 13: ...t secured by two worm drive hose clips Will clamp to any pipe with an outside diameter between 60 and 80mm BA393D Heavy duty stainless steel bracket secured by a V bolt Will clamp to any pipe with an...

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