Home › Forums › Panel Meter Support › Drok DC Bidirectional meter 0-90v 0-100A high amp reading at low voltage
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Sheldon Wright
September 8, 2019 at 2:55 pmPost count: 0I am in need of some major help. I now have 3 Drok Bidirectional Meter With Hall Sensor. When my Lithium Ion batteries reach as low as 10.8v, the voltage on the display shows higher voltage readings and 10a in the current draw when there’s no load connected. It’s throwing off my readings and tests. I need some help on how to fix this please.
Hello Sheldon Wright，
According to your description, we think it should be 200219
If no-load current is not zero, please move yellow cursor to OUT, then hold OK button for 3 seconds.
Voltage calibration:
a DC Variable Power Supply, an multimeter
1. Hook up the meter with power supply.
2. Hold “OK” button and power on meter. After power on, please release button after 3 seconds. Then it will enter setting interface.
3. Please move yellow cursor to “Mode” and short press OK button, then move the yellow cursor to “10.V” and increase the voltage of adjustable power supply to 12V. Then press up or down button to adjust voltage reading of meter until it is the same as actual output voltage.
4. Next, please press “OK” button to move the cursor to “40.V”; increase the voltage of power supply, this voltage value can be any one between 32V-40V; then press up or down button to adjust voltage reading of meter until it is the same as actual power supply voltage.
5. Please short press “OK” button again to move to”10.V”, and repeat the above two calibration for 12V and 40V. When voltage reading of meter come very close to actual value, the calibration is finished. Then press “OK” to move the cursor to “Save” to save the setting; at last, power off and then power on again.Best regards.
Mark Jose
November 25, 2020 at 5:38 amPost count: 0i’ve managed to get through the calibration screen. I’ve tried to calibrate the voltage multiple times until I got the right reading. Now I’m stuck with the calibration of the Amperes.
A — Do i need to change the values of this? if yes, will it be higher value or lower? if No, what’s the default value since I’ve change this.
+4 — how to calibrate this part? if my DC Power supply is set to above 4Amps then I will need to adjust this?, what if my DCPower supply is set to 2.2Amps then there’s no need to adjust this but I need to adjust the -4 settings??
-4 — how to calibrate this part? if my DC power supply is set to 1.8Amps then i would need to adjust this? what if my DC power supply is set to 4Amps then there’s no need for me to change this parameter but I would need to change the +4 parameter instead???
Hello Mark Jose,
Please refer to below current calibration. If there is no large error, it is not recommend to calibrate meter.
Charging and discharging current calibration methods are the same.
1. Hook up the measuring module with power supply and load according to the charging/ discharging wiring diagram.
2. Set the power supply as over 12V, then hold on the OK button and power the meter simultaneously. release button after 3 seconds. It will come to parameter setting;
3. Please move yellow cursor to “Mode” and short press OK button, then move the yellow cursor to “+4.A”(It is “-4A” in discharging mode). In that case, please make sure the actual load current is over 1.00A. Next, please press up or down button to adjust the current reading of meter until it is the same as actual load current. After that, press OK, andmove yellow cursor to ”Save” and save the setting.Best regards,
DROK
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