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BA524D

loop-powered

4½ digit field

mounting indicator

Issue: 4

3rd December 2003

Содержание BA524D

Страница 1: ...BA524D loop powered 4 digit field mounting indicator Issue 4 3rd December 2003...

Страница 2: ...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 8 Accessories 8 1 Units of measurem...

Страница 3: ...l converter Fig 1 Simplified block diagram of BA524D Each time a 4 20mA current is applied to the instrument initialisation is performed After a short delay the following display sequence occurs 1 8 8...

Страница 4: ...tput is greater than the sum of voltage drops introduced by the BA524D and the cable resistance Fig 3 Remote indication 4 INSTALLATION 4 1 Location The BA524D indicator is housed in a robust IP66 glas...

Страница 5: ...ll the required glands conduit fittings or blanking plugs Note the temporary dust seals do not provide IP66 protection d Connect the field wiring to the terminals as shown in Fig 5 e Replace the instr...

Страница 6: ...parameter root to be displayed If an incor rect code is entered the indicator will return to the display mode Once within the menu the required parameter can be reached by scrolling through the main...

Страница 7: ...ction 50 or 60Hz may be selected This function must be set before the instrument is calibrated as it affects the indicator display See section 5 7 1 rEF Calibration of internal references The instrume...

Страница 8: ...have been adjusted press E to enter the new zero The indicator will display Ent for a few seconds while the information is being stored in memory and will then return to the ZErO prompt To adjust the...

Страница 9: ...tor to 20 000mA and again press P The indicator will display Ent when the 20mA reference has been updated and will then return to the 020A prompt Two operations of the E button will return the indicat...

Страница 10: ...10...

Страница 11: ...display the input current as a percentage of span when the P push button is operated Step 1 Connect indicator to calibrator Connect the indicator to an accurate external current source Terminal 1 posi...

Страница 12: ...erences As in 7 1 the BA524D is required to display 50 0 with a 4mA input 1050 0 with a 20mA input from a linear transducer Maximum display resolution is required the frequency of the mains supply is...

Страница 13: ...ng completion of calibration return to the display mode by pressing E 7 MAINTENANCE 7 1 Fault finding during commissioning If a BA524D fails to function during commissioning the following procedure sh...

Страница 14: ...s also unscrew the two C screws securing the buttons and un plug the five way connector Finally unscrew all four D screws identified in Fig 4 and carefully lift off the front of the instrument The ins...

Страница 15: ...hanumeric characters 10mm high or 1 row of 11 alphanumeric characters 7mm high or 2 rows of 18 alphanumeric characters 5mm high 8 2 Alarms The BA524D can be supplied with two solid state single pole a...

Страница 16: ...Alarm enable Enables or disables the alarm function without changing the alarm parameters See section 8 2 3 SP1 Alarm setpoint 1 Adjusts the alarm setpoint The alarm is activated when the indicator d...

Страница 17: ...arm may be positioned anywhere between 19999 and 19999 providing this corresponds to an input current between 3 8 and 20 2mA e g If the indicator has been calibrated to display 0 with 4mA input and 10...

Страница 18: ...et at 9000 and hysteresis of 200 will perform as follows High alarm will be activated when display equals or exceeds 9000 but will not reset until the display falls below 8800 8 2 8 Alarm delay dELA T...

Страница 19: ...urity code allowing direct access to the setpoints by pressing the P and Up buttons simultaneously New instruments with alarms are supplied with this function disabled and the security code set to 000...

Страница 20: ...lumetric units by filling the tank with known incremental volumes and calibrating the indicator to display the sum of the increments at each break point The number of break points required should firs...

Страница 21: ...21...

Страница 22: ...oint occurs Enables the required current at each break point to be defined without having to input an accurate input current to the indicator diSP Defines display at break point Enables the indicator...

Страница 23: ...ayed 8 5 Display backlight The BA524D can be supplied with LED backlighting to improve display contrast when the indicator is installed in poorly illuminated areas The backlight is electrically isolat...