Published: 2025-06-25 Article source:
Welcome to General Measure's channel. Today, we'll explain the weight calibration of the loss-in-weight controller GMC-X3, which can be operated on the device or on a connecting HMI! This video explains how to calibrate the weight of the GMC-X3 through the HMI.
The weight calibration of the GMC-X3 includes zero calibration and gain calibration; It involves setting parameters such as unit, decimal point, division and capacity. During the calibration process, it is crucial to keep the controller in stable state and operate the verification.
First, set calibration parameters.
Calibration Parameters:
In the main interface, click the Menu key to enter the menu interface, click Weight Calibration, and the relevant calibration parameters will be displayed.
Step 1: Weight Unit Settings
Click the Unit button on the right side of Weight Unit, and a selection window will pop up. There are three options for units: g, kg, and t. Choose the unit according to your application.
Step 2: Decimal Point Settings
Click the Decimal Point button, and a selection window will pop up. There are five options for decimal points: 0, 0.0, 0.00, 0.000, 0.0000. Generally, if we select more decimal points, the more accurate the measurement results are. But multiple decimal points may lead to measurement errors. We need to set it according to the weighing range (Tips: normally set 0.000 for 25kg and 0.00 for over 100kg).
Step 3: Set the Division
Division is the smallest unit value that the instrument can display or output within the weighing range. The smaller the value, the higher the resolution of the instrument.
Click the Division value button next to Division. There are six options for division values: 1d, 2d, 5d, 10d, 20d, 50d.
Step 4: Capacity Settings
To set the capacity, it is necessary to confirm the weights used for calibration, which is usually the 80% of the maximum weights of the weighing system. If you don’t have the exacted weight, you can choose weights as close to the scale capacity as possible. The capacity value should be greater than the maximum weight to be measured. And the capacity will affect the the division value.
Calibration Process
After setting the calibration parameters, we enter the calibration demonstration.
Make sure the scale is free from external interference to avoid affecting weighing accuracy.
1. Zero Calibration
On the Weight Calibration interface, clear the current scale, wait for the millivolt to stabilize, and click the "Calibration Zero" button to complete the zero calibration.
When Zero Calibration is successful, there will be a prompt "Calibration Zero Succeed", and the buzzer will sound a few times.
2. Gain Calibration
After zero calibration is completed, place a weight on an empty scale, wait for the stability status light on, click the weight input box, enter the weight number. Click the "Calibration Gain" button to complete the weight calibration.
When the Gain Calibration is successful, there will be a prompt "Calibration Gain Succeed", and the buzzer will sound a few times.
3. Calibration Verification
Go back to the main interface to check the weight. Load the weight, if the controller shows the correct weights. It means weight calibration was successful.
That's all for calibration process. If you want to know more details about this instrument, feel free to contact General Measure. In the next video, we'll demonstrate flow calibration of the GMC-X3.