DIGITAL LOAD CELL

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ANALOGUE AND DIGITAL LOAD CELL COMPARISON

Load cells are sensors that convert the force on them into an electrical signal.

Special strain gauge resistors, usually glued on Steel or Aluminum materials, are brought together in the form of a Wheatstone Bridge. The change in these resistors is sent as an analog electrical signal to the Analog / Digital converter and then digitally to the microprocessor, and thus we can see the weight or force values ​​on the connected screen.

WHAT ARE THE DIFFERENCES BETWEEN ANALOGUE AND DIGITAL LOADCELL?

Analog Loadcell sends the analog electrical signal consisting of strain directly to the indicator to which it is connected and becomes usable by converting it to digital by the A/D converter inside the indicator.

Signal losses may occur in Analog Load Cells due to cable length.

In Digital Load Cells, the analog signal resulting from the strain is sent to the A/D converter located next to it and from there to the microprocessor inside the load cell, so that there is no signal loss since the analog signal is not carried to a long distance.

Each of the digital load cells has a separate ID number and is recognized by the indicator to which it is connected. In weighing systems where more than one load cell is used, the indicator communicates with all load cells separately, so that the load cell making faulty measurements can be detected immediately.

Since the communication format between Digital Load Cells and the Indicator uses a binary number system like in computers, there is no data loss and they work more stable. Situations such as radio signals, electromagnetic environments, temperature, etc. cannot affect the measurement.

Analog Load Cells send uninterrupted signals, while Digital load cells send data thousands of times per second and are kept under constant control.

In a weighing system created with Analog Load Cells (Example: Truck Scale), corner settings must be made with potentiometers on a separate PCB card, whereas in a system established with Digital Load Cells, they can be made directly via software on the indicator without the need for an external analog setting.

In a system using Digital Load Cells, if one of the load cells fails, the indicator detects the faulty one and gives an instant warning, thus preventing incorrect weighings and eliminating the need for re-calibration after replacing it with a new one.

ADVANTAGES OF DIGITAL LOAD CELL

It is constantly under control with high-level error reporting, and in case of any error, immediate intervention can be made.

If you replace the faulty one with a new one, there is no need to re-calibrate.

It can be used without any problems for years with software corner adjustment.

Situations such as radio signals, electromagnetic environments, temperature, etc. cannot affect the measurement.

Higher sensitivity and accuracy have lower error percentages.

DISADVANTAGES OF DIGITAL LOAD CELL

It is slightly more expensive than Analog Load Cells.

You can only use indicators produced by the Digital load cell manufacturer.

When necessary, you should only receive service from the manufacturer or its authorized service.

ADVANTAGES OF ANALOGUE LOAD CELL

Prices are quite cheap.

It can be used with any brand and model indicator you want.

You can get service from any Tartı company you want.

DISADVANTAGES OF ANALOGUE LOAD CELL

When it malfunctions, you may not be aware of it and it will cause your weighings to be inaccurate, resulting in material and moral damages.

You need to make corner adjustments manually with the help of potentiometers, and potentiometers, which consist of mechanical parts, may become deformed over time.

If you replace even one of the load cells used in the system with a new one, calibration and verification must be done again, which means a waste of money and time.

Non-automatic weighing instruments

Non-automatic weighing instruments         Download: certificate 2014/31/EU
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