Calibration, in general use, is often regarded as including the process of adjusting or aligning the output of or indication on the equipment to agree with value of the applied standard, within a specified accuracy.
Neware Battery testing instruments generally output and measure current and voltage, and they have different circuits for charge and discharge.
So we need to calibrate: a). Charge Current; b). Discharge Current; c). Charge Voltage; d). Discharge Voltage. To make sure the testing instruments work properly and give the accurate results.
1. Charge Current / Discharge Current (If negative power supply installed)
Since the standard current meter generally cannot support large current, a DC shunt should be introduced for some large current calibration. You set a current value for the equipment to output, there will be a value indicated by our BTS. By below connection, there will be another value indicated by standard meter.
2. Discharge Current (No negative power supply installed)
If there is no negative power supply installed, the equipment cannot discharge except you connect a battery to function as a power supply. You can calibrate discharge current at this situation just string a battery in the circuit as above diagram. You need to consider the discharge capability of the battery connected.
3. Charge Voltage
Now string a resistor in the circuit as below diagram, set constant voltage charge, this will create a voltage at the ends of the resistor. BTS will read a voltage value, and also the standard meter. These values will be taken into calculation for the calibration.
4. Discharge Voltage
For the equipment with negative power supply and empowered with Constant Voltage Discharge, you can use the same logical as above calibration for charge voltage. If no such conditions, a digital voltage signal source will be introduced for the calibration.
Linearity is an important item of MSA (Measurement System Analysis). To have better linearity in whole scale, you need to calibrate more segments.
Multiply 4 items you need calibrate with the segments’ points, you get the calibration procedure matrix you need to take. This is a laborious job to complete the calibration manually. Our newly designed automated calibration system will facilitate this task.
So, let’s introduce Neware integrated calibration solution! It help you calibrate your Neware instruments as you want! Following picture is the outlook of Neware integrated calibration solution. It includes a multimeter on the top layer of the rack, a middle computer, and the calibration device at the bottom. Following picture shows the outlook of Neware integrated calibration solution.
And, here’s something more about this solution, the top structure of it.
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