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Related Manuals for BEKA ba326c
Summary of Contents for BEKA ba326c
- Page 1 BA326C Intrinsically safe loop-powered analogue bargraph and digital indicator Issue 12 For instrument with serial numbers above 071235/01/001 Alarm Analogue setpoints display Certification label Digital display Alarm Push annunciators buttons Issue: 12 June 2017...
- Page 2 6.13 Security code 6.14 Over and under-range Calibration Examples 7.1 Using an external current source 7.2 Using the internal references The BA326C is CE marked to show compliance with the European Explosive Atmospheres Directive 2014/34/EU and the European EMC Directive 2014/30/EU...
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Page 3: Operation
BA326B. Each time a 4/20mA current is applied to the instrument, initialisation is performed. After a The main application of the BA326C is to short delay the following display sequence display a measured variable or control signal in occurs: a hazardous process area. -
Page 4: Intrinsic Safety Certification
4/20mA input terminals 1 and 3 will not exceed those specified for simple apparatus. This allows the BA326C to be connected into to any intrinsically safe circuit protected by a Zener barrier of galvanic isolator providing the output parameters of the circuit do not exceed:... - Page 5 Group ethylene Group hydrogen Having a temperature classification of: This allows the BA326C to be installed in all Zones and to be used with most common industrial gases. SYSTEM DESIGN FOR HAZARDOUS AREAS ATEX CERTIFICATION The BA326C ATEX EC-Type Examination...
- Page 6 4/20mA current loop connected Fig 2 BA326C in a transmitter loop to earth. Remote indication A BA326C may be driven via an intrinsically safe interface from a 4/20mA safe area signal to provide a remote indication within a hazardous area.
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Page 7: Installation
Fig 3C Galvanic isolator can be used with any 4/20mA current loop. INSTALLATION Fig 4 BA326C dimensions Location The BA326C indicator is housed in a robust aluminium enclosure with an armoured glass window surrounded by a Noryl bezel. Installation Procedure front... - Page 8 0.00 to tag under one of the rear panel fixing screws. 100.00 for 4 to 20mA input. Summary of programmable PROGRAMMING & CALIBRATION functions The BA326C is programmed and calibrated via This section summarises four front...
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Page 9: Section 6.10 Of This Manual
Summary of Programmable Functions Display Description of function Display Description of function 'SEt' Calibration display using internal references. Enables the zero and span of the 'root' Square root extractor Turns the square root extractor for digital indicator to be adjusted linearising output from... - Page 10 Dummy trailing zero: dZErO programmable functions. The BA326C digital display can show any section 6.13 number between -19999 and 19999. If a larger number is required a trailing dummy zero can be activated which extends the...
- Page 12 'bAr' from the main menu and press P main menu and press P. The indicator will which will reveal if the BA326C is programmed display 'ZErO' which is a request for a 4mA to display a column 'Col' or a single segment input current.
- Page 13 This function may also be used when To gain access to the sub-menu select 'Cond' calibrating a complete loop from primary from the main menu and press P. element to indicator display e.g. when the indicator will display '0000'. Using the Up and indicator is displaying the output from a level to Down buttons and the P button to move to the current converter.
- Page 14 To re-calibrate the 20mA internal reference, To define the input about which deviation is to press the Up button which will cause the be displayed the BA326C must be returned to indicator to display '.020A'. Adjust the external the display mode.
- Page 15 6.13 Security code: COdE calibration conditioning instrument may be protected 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 programming...
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Page 16: Calibration Examples
'SurE' which is a warning that changing the parameters in Using an external current source this sub-menu will change the The BA326C indicator is required to display: instrument calibration. To enter the 'FrE' sub-menu press P, and then with a 4mA input... - Page 17 P button in the display mode. Select '4-20' and return to the main menu by pressing E. Using the internal references As in 7.1 the BA326C is required to display: Step 5 Position dummy decimal point Select 'd.P' from the main menu with a 4mA input and then press P.
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Page 18: Maintenance
Symptom Cause Solution No display Incorrect There should be 1.1V If a BA326C fails after it has been functioning wiring between terminals 1 correctly, the following procedure should be & 3 with terminal 1 followed: positive. No display... - Page 19 Routine maintenance If specified at the time of ordering, the BA326C can be supplied with tag or applicational The mechanical condition of the instrument information printed onto instrument and electrical calibration should be regularly checked. The interval between inspections certification label which is located on the side should be chosen to suit the environmental the enclosure.
- Page 20 Clause 5.7 of EN60079-11. This allows each of the BA326C alarm outputs to be connected to any intrinsically safe circuit protected by a Zener...
- Page 21 28V dc 9.2.3 Programming and adjustment 200mA When an alarm card is added to a BA326C the 0.84W main programme menu is extended as shown in Fig 14. The additional functions appear No system certificate has been issued for the between 'Cond' and 'C--P' in the main menu.
- Page 22 Summary of programmable alarm functions 9.2.4 Alarm enable: EnbL This function allows the alarm to be enabled or Display Description of function disabled without altering any of the alarm parameters. To check or change the function select 'EnbL' from the alarm menu and press P 'EnbL' Alarm enable which will reveal the current setting.
- Page 23 Main menu Alarms Main menu Cond ALr1 ALr2 AcSP C - - P EnbL AcCd As ALr1 0000 Access Enable Security Code For Direct Access to to toggle Setpoints between On and OFF Enter code by pressing to move to next digit Code 0000 allows direct...
- Page 24 e.g. An indicator calibrated to display 0 to 9.2.11 Display alarm identification: 10000, with a high alarm set at 9000 and FLASH hysteresis of 200 will perform as follows: The status of each alarm is always shown by an alarm annunciator located above the digital High alarm will be activated when display display.
- Page 25 9.2.13 Adjusting alarm setpoints from the To adjust an alarm setpoint select 'SP1' or 'SP2' and press P which will reveal the current display mode setting. Each digit of the setpoint may be Access to the alarm setpoints from the adjusted using the Up and Down push buttons, indicator display mode is obtained by operating and the P button to move to the next digit.
- Page 26 Inclusion of the lineariser software extends the To add a break-point select 'CAL' from the 'CAL' and 'SEt' functions as shown in Fig 17, main menu and press P to enter the 'Add' and the root and null functions are omitted. function;...
- Page 27 The number of break-points required should When the required number of break-points has first be entered using the Add and dEL been entered, return to the sub-menu by functions. In both these functions the indicator pressing E. The indicator will display 'Add' or initially displays the current break-point and the 'dEL' depending upon the last function used.
- Page 29 Display backlight The BA326C can be supplied with LED backlighting to improve display contrast when the indicator is installed in poorly illuminated areas. The backlight is segregated from the measuring circuit and has been certified as a separate intrinsically safe circuit.
- Page 30 A1.1 IECEx Certificate of Conformity The BA326C loop powered indicator has been issued with an IECEx Certificate of Conformity number IECEx ITS 08.0003X which specifies the following certification code and marking: Ex ia IIC T5 Ga...
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