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Issue: 7

March 2014

BA324ND

Type nL certified

loop-powered

4½ digit field

mounting indicator

Issue 7

Only for replacement use after May 2013.

Use BA324NE for new applications

Содержание BA324ND

Страница 1: ...Issue 7 4th March 2014 BA324ND Type nL certified loop powered 4 digit field mounting indicator Issue 7 Only for replacement use after May 2013 Use BA324NE for new applications...

Страница 2: ...eferences 8 Maintenance 8 1 Fault finding during commissioning 8 2 Fault finding after commissioning 8 3 Servicing 8 4 Routine maintenance 8 5 Guarantee 8 6 Customer comments 9 Accessories 9 1 Units o...

Страница 3: ...forward biased diode D1 The voltage developed across D1 which is relatively constant is multiplied by a switch mode power supply and used to power the instrument The voltage developed across R1 which...

Страница 4: ...60079 Part 14 Electrical Installation in Hazardous Areas When designing systems for installation outside the UK the local Code of Practice should be consulted 3 3 4 20mA input terminals Input terminal...

Страница 5: ...Fig 2 BA324ND in a transmitter loop In practice it is only necessary to ensure that in normal operation the maximum current flowing in the loop is less than 30mA In the example shown in Fig 2 this cu...

Страница 6: ...ted to the internal EMC filters For maximum radio frequency interference rejection this terminal should be connected to a local earth or to a cable screen which is earthed in the safe area To prevent...

Страница 7: ...and may be operated when a flammable atmosphere is likely to be present All the programming functions are contained in an easy to use menu which is shown diagramatically in Fig 6 Each function is sum...

Страница 8: ...s the resolution of the least significant display digit May be set to 1 2 5 or 10 digits See section 6 3 d P Decimal point Positions the dummy decimal point between any of the digits or turns it off S...

Страница 9: ...ial flowmeter Below 5 of flow the BA324ND display is forced to zero of full flow Current output mA 5 0 4 04 10 0 4 16 25 0 5 00 50 0 8 00 75 0 13 00 100 0 20 00 6 3 Resolution rESn This function defin...

Страница 10: ...10...

Страница 11: ...least significant digit has been adjusted press E to return to the SPAn prompt followed by E to return to the menu 6 7 Conditioning sub menu Cond This sub menu allows the mains line frequency at whic...

Страница 12: ...ith the default security code 0000 which allows unrestricted access to all programming functions To enter a new security code select COdE from the menu and press P which will cause the indicator to di...

Страница 13: ...and press E to return to the main menu Step 4 Select frequency of maximum mains line rejection Scroll though the main menu until Cond is displayed Enter the sub menu by pressing P twice and select the...

Страница 14: ...y of maximum mains line rejection Scroll though the main menu until Cond is displayed Enter the sub menu by pressing P twice and select the FrE function Using the Up or Down buttons select 50 and then...

Страница 15: ...ay has a large voltage ripple content Unable to Incorrect Enter correct security enter the security code or fit security programme code link in override position Mode entered See Fig 7 8 2 Fault findi...

Страница 16: ...intenance The mechanical condition of the instrument and electrical calibration should be regularly checked The interval between inspections depends upon environmental conditions We recommend that ini...

Страница 17: ...A324ND can also be supplied with a blank or custom engraved stainless steel plate secured to the instrument terminal cover by two screws 9 2 Alarms The BA324ND can be supplied with two solid state sin...

Страница 18: ...owing table summarises each of the alarm programme functions and includes a cross reference to more detailed information Again only the functions on alarm 1 are listed but alarm 2 has identical facili...

Страница 19: ...een calibrated to display 0 with 4mA input and 10000 with 20mA input the two alarm setpoints may be positioned anywhere between 125 and 10125 To adjust the setpoint select SP1 or SP2 from the alarm me...

Страница 20: ...can be changed by pressing the Up or Down button followed by the E button to return to the alarm menu 9 2 8 Hysteresis HStr During programming hysteresis is shown in the units the indicator has been c...

Страница 21: ...nt AcSP This function controls a separate menu which provides direct access to the alarm setpoints when the indicator is in the display mode See section 9 2 12 for a full description An operator may t...

Страница 22: ...ressing E will return the display to the SP1 or SP2 prompt from which the other setpoint may be selected or the indicator may be returned to the display mode by pressing E again Direct access to the a...

Страница 23: ...n can be selected using the Up and Down push buttons The delete break point function dEL operates in a similar manner to the Add function described above When the required number of break points has b...

Страница 24: ...24...

Страница 25: ...equired break point has been selected press P to reveal the existing display Using the Up and Down buttons and P to move between digits set the revised display Press E to return to the sub menu from w...

Страница 26: ...i 30V dc Ii 100mA dc Pi 1 3W This allows the backlight to be powered from a safe area 18 to 30V dc supply as shown in Fig 15 Providing the supply voltage is less than 30V the backlight safety componen...

Страница 27: ...re available for securing the BA324ND to a horizontal or vertical pipe BA392D Stainless steel bracket secured by two worm drive hose clips Will clamp to any pipe with outside diameter between 60 and 8...

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