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Issue:    5

9th July 2019

BA537E and BA538E

One input

General Purpose

pulse input

Rate Totalisers

Issue 5

Содержание BA537E

Страница 1: ...Issue 5 9th July 2019 BA537E and BA538E One input General Purpose pulse input Rate Totalisers Issue 5...

Страница 2: ...s 6 3 Add a segment add 6 4 Remove a segment del 6 5 Input frequency pul5efre 6 6 K factors l factor 6 7 Lineariser error messages 7 Configuration example 7 1 Configuration procedure 8 Maintenance 8 1...

Страница 3: ...E and BA538E have a single pair of input terminals for connection to all types of transducer When counting pulses from a transducer requiring energising such as a switch contact open collector or a tw...

Страница 4: ...ts when the Rate Totaliser is fitted with optional alarms and the AC5P setpoints function has been enabled See 9 4 13 Access to configuration menu 2 3 Displays The BA537E and BA538E have two digital d...

Страница 5: ...eshold Input transducer Switching thresholds Lower Upper Open collector 2k 10k Voltage pulse low 1 0V 3 0V Voltage pulse high 3 0V 10 0V Magnetic pick off 0mV 40mV peak Proximity detector 1 2mA 2 1mA...

Страница 6: ...configuration menu VoLt5 L and VoLt5 H as shown in section 3 2 The Rate Totalisers contain a configurable debounce circuit to prevent false triggering of the instrument Three levels of de bounce prote...

Страница 7: ...o prevent vibration damage Note Optional backlight is internally powered Fig 3A BA537E dimensions terminals Cut out dimensions Recommended for all installations Mandatory to achieve an IP66 seal betwe...

Страница 8: ...ing is supported Fig 4 Fitting panel mounting clamps 4 4 Scale card The Rate Totaliser s units of measurement are shown on a printed scale card in a window at the right hand side of the display The sc...

Страница 9: ...configured totalisation continues so that any flow occurring during this time is recorded 5 1 Configuration structure Fig 6 shows the BA537E and BA538E calibration structure The rate and total displa...

Страница 10: ...figuration menu is shown diagrammatically in Fig 7 When returning to the totalisation mode following reconfiguration the Rate Totaliser will display dAtA followed by 5AVE while the new information is...

Страница 11: ...of litres in 1 000 imperial gallons 5CALE t may be adjusted between 0 0001 and 99999 The total flow display is independent of the rate display See section 5 13 Display Summary of function 5CALE r Rat...

Страница 12: ...tored See section 5 20 Display Summary of function CLr Gtot Reset grand total from configuration menu This function resets the grand total to zero from within the configuration menu when CLr YE5 is se...

Страница 13: ...dEbounCE which configure the Rate Totaliser input and input noise rejection 5 6 Input type inP tYPE inP tYPE is a sub menu in the inPut function which defines the type of flowmeter or input pulse that...

Страница 14: ...14...

Страница 15: ...15...

Страница 16: ...on will scroll through the three levels When the required level has been selected pressing twice will enter the selection and return the display to the inPut prompt in the configuration menu 5 8 Displ...

Страница 17: ...control to the decimal point that may be positioned between any of the digits or may be omitted by moving it to the right of the least significant digit When set as required press to return to the FAC...

Страница 18: ...play stability and a fast response to a large rate signal change To check or change the filter select FiLtEr in the configuration menu and press which will reveal the existing settings with the first...

Страница 19: ...ge the setting followed by the button twice to enter the change and return to the LoC clr prompt in the configuration menu 5 21 Grand total reset from configuration menu Clr Gtot The grand total is a...

Страница 20: ...from the configuration menu and press which will result in a 0000 display with the first digit flashing This is a request to confirm the reset to factory default instruction by entering 5urE Using th...

Страница 21: ...ibration certificate specifying the average K factor and the flow range over which it applies For use over extended flow ranges and for non linear devices multiple K factors will be specified often in...

Страница 22: ...22...

Страница 23: ...of four sub functions If Add is not displayed repeatedly press the or button to select Add followed by which will cause the current segment and the total number of lineariser segments to be displayed...

Страница 24: ...s divided by L FACtor which is adjustable between 0 0001 and 99999 for flow applications it should be set to the K factor of the flowmeter K factor is the number of pulses that the flowmeter produces...

Страница 25: ...ction If the Rate Totaliser is subsequently found to miscount the noise rejection can be increased Enter the selection and return to the inPut prompt in the configuration menu by pressing the button t...

Страница 26: ...o be displayed in the required engineering units The rate display timebase is determined by t bA5E that is adjusted in Step 11 In this example the rate of flow display is required in imperial gallons...

Страница 27: ...eveal the sub menu Again using the or button select the local total reset function clr tot and press This function is required so using the or button select on followed by to return to the clr tot pro...

Страница 28: ...Alarms have been disabled following calibration change Re enable both alarms 8 2 Fault finding after commissioning ENSURE PLANT SAFETY BEFORE STARTING MAINTENANCE If a BA537E or a BA538E fails after i...

Страница 29: ...ory fitted backlight that produce green illumination enhancing display contrast and enabling it to be read at night or in poor lighting conditions Both the BA537E and BA538E backlights are internally...

Страница 30: ...hat total alarms do not have hysteresis Alarm AL2 is identical to alarm AL1 The following table summarises each of the alarm configuration functions and includes a cross reference to more detailed inf...

Страница 31: ...push button will toggle the selection between rAtE and totAL when set as required press the button to return to the alarm sub menu Note When tYPE is changed the alarm configuration is automatically re...

Страница 32: ...32...

Страница 33: ...ss to enter the value and return to the dELA prompt in the alarm sub menu The Rate Totaliser s alarm annunciator will start flashing immediately an alarm condition occurs and will continue for the del...

Страница 34: ...ained by operating the and push buttons simultaneously as shown in Fig 16 If the setpoints are not protected by a security code the alarm setpoint prompt 5P1r or 5P1t will be displayed depending upon...

Страница 35: ...tor closes P2 is connected to P1 and a pulse output current flows through the resistor R1 The current flowing in the circuit is determined by resistor R1 which should be chosen to limit the output cur...

Страница 36: ...the output pulse 1 10 100 1000 10000 Using the or push button select diVidE in the pulse output sub menu and press which will reveal the existing divisor The selected divisor can be changed by pressin...

Страница 37: ...ut to be controlled by the rate or the total display and to be scaled Fig 17 4 20mA output configuration sub menu 9 6 3 4 20mA output 4 20 oP Access the Rate Totaliser s configuration menu as describe...

Страница 38: ...t 20 000 in the 4 20mA output sub menu and press which will reveal the existing rate or total display with one digit flashing The required display can be entered using the or push button to adjust the...

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