BAL4010/4020_English v.2.8 - Hydrotechnik

BAL4010/4020_English v.2.8 - Hydrotechnik BAL4010/4020_English v.2.8 - Hydrotechnik

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3. Programming of singlemeasuring channels3.1 Programming of p1, p2 or p3* * * * PROG P1* * * *1: -> type of sensor2: -> calibration val.3: -> zero point3.2 Selection of pressure sensor* * * * PROG P1* * * **1-> 0 - 20 mA2-> 4 - 20 mAENT-> confirmBy pressing the keys and you will invoke thefollowing selection menu.As there is the possibility to connect pressure sensors with anoutput signal of 0 to 20 mA and 4 to 20 mA to the instrument, itis absolutely necessary to indicate the requested type of signal.For this, you have to select number 1 "Selection sensor type"out of the menu "programming p1".The following display is shown. In the example the signaltype 0 to 20 mA is chosen, number "1" is entered (have a lookat the star-symbol!) and key "ENT" is pressed for confirmation.Error signal at 4 to 20 mA sensorP1 : = - - - - - barP2 : = 0.0 barP3 : = 0.000 l/minMeasuring value display when4 to 20 mA sensors work correctlyP1 : = 0.0 barP2 : = 0.0 barP3 : = 0.0 barQ : = 0.000 l/minIf horizontal lines are shown in the display,(e.g. P1 : = - - - - - bar) this can have the following reasons:For example, the connections to the pressure sensors aremissing (measuring cable between sensor and measuring inputis missing), a parting of a cable or a defect of a sensoroccured, or the sensor isn´t connected to the measuring input,that means the measuring input isn´t provided with a currentsignal.Here the life-zero-detection is used to inform the user about theabove-mentioned error possibilities.If the sensor works correctly, the measuring value display isshown without the horizontal lines.This optical signal is only valif for the current signalsfrom 4 to 20 mA.Please take into consideration, that different current signals canbe adjusted for pressure sensors (p1, p2 and p3)e. g.: p1 = 4 to 20 mAp2 = 0 to 20 mA-8-

3.3 Input of calibration value* * * * PROG P1* * * *calibr. value: 600.0(bar)ENT-> confirmIf you enter the figure "2", the menu for the input of calibrationvalues will be opened.The corresponding measuring range end value, in this case 600(pressure measuring range end value of the pressure sensor),needs to be entered. Confirmation of the input with key "ENT".You can see the end value of the pressure measuring rangefrom the label of the pressure sensor.Please take into account, that, when measuringnegative pressure with a pressure sensor from -1 to 6bar, not the calibration value, referring to the pressuremeasuring range end value is entered, but the span ofthe pressure measuring range from -1 to 6 = 7 bar.That means, the number 7 must be entered as acalibration value.3.4 Zero point alignment* * * PROG P1 * * *sensor must bedepressurizedENT-> confirm* * * PROG P1 * * *alignment 2 sec.* * * PROG P1 * * *zero point : 0.184(bar)ENT-> confirmFor measurements of negative pressure and for precisemeasurements of pressure differential the user needs toexecute a zero point alignment for the connected pressuresensor.For doing this, you have to enter the number "3" in the abovemenu.The hint, that the sensor must be pressure free, is shown. Dueto this it is sensible to take the sensor from the plant. Press key"ENT".The alignment of the zero point correction is carried out.The display, shown on the left, is active for approx. 2 seconds,after this the instrument will show another menu point.In this display you can see the zero point deviation of thepressure sensor. With its confirmation by a stroke of key "ENT",it will be taken into account as a correction value for all furtherpressure measurements by the internal software.With another stroke of key "ENT" you will come back into theusual measuring value display.The measuring inputs p2 and p3 are programmed in the sameway as described above.-9-

3. Programming of singlemeasuring channels3.1 Programming of p1, p2 or p3* * * * PROG P1* * * *1: -> type of sensor2: -> calibration val.3: -> zero point3.2 Selection of pressure sensor* * * * PROG P1* * * **1-> 0 - 20 mA2-> 4 - 20 mAENT-> confirmBy pressing the keys and you will invoke thefollowing selection menu.As there is the possibility to connect pressure sensors with anoutput signal of 0 to 20 mA and 4 to 20 mA to the instrument, itis absolutely necessary to indicate the requested type of signal.For this, you have to select number 1 "Selection sensor type"out of the menu "programming p1".The following display is shown. In the example the signaltype 0 to 20 mA is chosen, number "1" is entered (have a lookat the star-symbol!) and key "ENT" is pressed for confirmation.Error signal at 4 to 20 mA sensorP1 : = - - - - - barP2 : = 0.0 barP3 : = 0.000 l/minMeasuring value display when4 to 20 mA sensors work correctlyP1 : = 0.0 barP2 : = 0.0 barP3 : = 0.0 barQ : = 0.000 l/minIf horizontal lines are shown in the display,(e.g. P1 : = - - - - - bar) this can have the following reasons:For example, the connections to the pressure sensors aremissing (measuring cable between sensor and measuring inputis missing), a parting of a cable or a defect of a sensoroccured, or the sensor isn´t connected to the measuring input,that means the measuring input isn´t provided with a currentsignal.Here the life-zero-detection is used to inform the user about theabove-mentioned error possibilities.If the sensor works correctly, the measuring value display isshown without the horizontal lines.This optical signal is only valif for the current signalsfrom 4 to 20 mA.Please take into consideration, that different current signals canbe adjusted for pressure sensors (p1, p2 and p3)e. g.: p1 = 4 to 20 mAp2 = 0 to 20 mA-8-

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