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Issue: 3

July 2014

BA558E

General Purpose

4/20mA loop-powered

panel mounting

Rate Totaliser

Issue 3

Содержание BA558E

Страница 1: ...Issue 3 4th July 2014 BA558E General Purpose 4 20mA loop powered panel mounting Rate Totaliser Issue 3...

Страница 2: ...ion using external current source 6 1 1 Example Adding break points to a new Rate Totaliser 6 2 Calibration using internal reference 6 2 1 Example Adding break points to a new Rate Totaliser 6 3 Error...

Страница 3: ...vated Loading message displayed Configuration message displayed Model and firmware version displayed The BA558E Rate Totaliser starts functioning using configuration information stored in the instrume...

Страница 4: ...mode Operating the or button will toggle the display to CLr YE5 with YE5 flashing operating the E button will then clear the grand total and Gt CLrd will be displayed to confirm the operation The ins...

Страница 5: ...nce of less than 1k as shown in Fig 2 Note The negative reset terminal RS2 is internally connected to the negative 4 20mA input terminal 3 The total display may also be reset to zero by operating the...

Страница 6: ...3 Installation Procedure a Cut the specified aperture in the panel To achieve an IP66 seal between the instrument enclosure and the instrument panel the aperture must have the tighter tolerances spec...

Страница 7: ...as an accessory from BEKA associates Custom printed scale cards can also be supplied To change a scale card unclip the protruding end of the flexible strip by gently pushing it upwards and pulling it...

Страница 8: ...lay at 20mA are adjustable although for flow application the display at 4mA is usually zero The position of the decimal point in the rate display is defined by the dP function To simplify calibration...

Страница 9: ...onfiguration Access code CodE 0000 Function FunC 5td Linear Rate display at 4mA Zero 0 00 Rate display at 20mA 5PAn 100 00 Resolution rE5n 1 digit P button in display mode C P Local reset of total t r...

Страница 10: ...s operated in the display mode Select PC of 4 20mA input 4 20 Current in mA Note PC is not available with lineariser See section 5 14 Display Summary of function 5CALE t Total scale factor Defines the...

Страница 11: ...ntains two sub functions Select ConF Returns instrument to default configuration shown in section 5 2 LtAb Returns lineariser to defaults shown in section 6 5 Both instructions must be confirmed by en...

Страница 12: ...12...

Страница 13: ...arity with bi directional flow Use of the lineariser is described in section 6 of this instruction manual 5 5 Display resolution rE5n This function defines the resolution of the least significant disp...

Страница 14: ...y and identify the lower display variable but on the larger upper display The position of the decimal point can be positioned in the same way by operating the and push buttons when set as required ent...

Страница 15: ...s been activated see section 5 17 To zero the grand total from within the configuration menu select Clr Gtot and press P which will cause the instrument to display Clr no Press the or button until CLr...

Страница 16: ...he or button When the required total scale factor has been set press E to enter the number and return to the 5CALE t prompt in the configuration menu 5 16 Clip off CLiP oFF To prevent totalisation of...

Страница 17: ...g the P button will transfer control to the next digit When all the digits have been adjusted press E to return to the CodE prompt in the configuration menu The revised security code will be activated...

Страница 18: ...Lineariser calibration using an external current source This method allows direct calibration of the lineariser with an external current source and is the preferred method when traceability is require...

Страница 19: ...19...

Страница 20: ...llowing break point 6 1 1 Example Adding break points to a new Rate Totaliser When adding break points to a new Rate Totaliser or to a lineariser following resetting to the factory defaults using the...

Страница 21: ...e E button The corresponding rate display at each of the break points can now be defined using the diSP sub function Using the and buttons select the diSP sub function and press P which will reveal th...

Страница 22: ...er the root extractor or the lineariser are required The standard linear relationship should therefore be selected With FunC displayed press P which will reveal the existing function Using the or butt...

Страница 23: ...the totaliser scaling factor In this example the rate display is in litres per minute but the total display is required in cubic metres 5CALE t Units of rate display Units of total display There are 1...

Страница 24: ...and total flow in cubic metres with a resolution of 0 1 cubic metres Total is to be shown on the upper large display and rate on the lower smaller display Totalisation is to occur for flow rates betw...

Страница 25: ...tly the following table may help to identify the cause of the failure Symptom Cause Check No display and no voltage between terminals 1 3 or 12 3 if optional backlight is loop powered No power supply...

Страница 26: ...New Rate Totalisers are supplied with the tag or application information specified when ordered thermally printed onto the rear panel adjacent to the terminals This tag information is not visible fro...

Страница 27: ...sed and current will only flow in one direction Ron less than 5 0 7V Roff greater than 1M Fig 12 Equivalent circuit of each alarm output The solid state output of each alarm may be used to switch any...

Страница 28: ...28...

Страница 29: ...ivated when the selected display rate or total equals the setpoint See section 9 3 5 Hi Lo Alarm function Defines the alarm function as High or Low See section 9 3 6 no nC Normally open or normally cl...

Страница 30: ...y pressing the or button followed by the E button to return to the alarm menu 9 3 7 Alarm output status no nC Configures the solid state alarm output to be open no or to be closed nC in the non alarm...

Страница 31: ...ate or total display depending upon which has caused the alarm alternates between the numerical value and the alarm reference ALr1 or ALr2 when the alarm output is activated If both alarm outputs are...

Страница 32: ...to the display mode Fig 15 Setpoint adjustment from the display mode To adjust an alarm setpoint select 5Px1 or 5Px2 and press P which will reveal the current setting Each digit of the setpoint may b...

Страница 33: ...backlight 9 4 1 Loop powering the backlight The backlight is loop powered by connecting it in series with the Rate Totaliser s 4 20mA input as shown in Fig 17 which increases the maximum Rate Totalis...

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