What is the difference between a portable hardness tester and a desktop hardness tester?

The portable hardness tester is one of the most widely used testing instruments today. It has a wide range of uses, mainly used in industrial production, scientific research, colleges and universities, and other fields. Hardness testers are mainly divided into two types: portable and desktop. The desktop is mainly Rockwell and Cloth. Portable hardness testers mainly include Webster, Barcol, Richter, etc., which are widely used in industrial quality inspection and scientific research. Due to the different types, the price of the hardness tester also varies greatly. It is difficult for us to make a choice when buying, but what are the specific differences? I will explain in detail for you below.

The following is a list of contents:

Carrying aspect

Degree aspect

Support hardness unit

Measuring range and conditions

difference

Machine weight

Carrying aspect

The desktop can detect some samples with regular shapes, small sizes, and cuttable. For some large-size and non-curable samples, only portable hardness testers can be used. The portable hardness tester is more suitable for samples with irregular shapes, such as gears. The desktop computer cannot be carried due to its large weight and volume, so it can only be used in the laboratory. The portable hardness tester is small in size and light in weight and can be taken directly to the site for sampling.

Degree aspect

The portable hardness tester is a digital liquid crystal display, which can directly read the measured hardness value; most of the desktop hardness testers are mechanical dials, pointer degrees, more troublesome, and inaccurate, easy to run off, but now there are also digital display desktop hardness testers. But the price is relatively high.

Support hardness unit

Portable hardness testers support multiple hardness units, such as Brinell, Vickers, Rockwell, Shore, Leeb, and other hardness systems; and can be converted; desktop hardness testers generally only support one hardness unit, which cannot be converted.

Measuring range and conditions

The portable hardness tester has no restriction on the shape of the tested workpiece. The shape can be irregular, but the thickness of the measured part is required to be greater than 5mm; the desktop hardness tester has strict requirements on the workpiece to be tested. First of all, there are restrictions on the opening. Generally, standard parts and regular specimen blocks are required. There are certain restrictions on its size. The workpiece is to be tested, but it can measure relatively small workpieces. It is a supplement to the portable hardness tester.

the difference

The error value of the portable hardness tester is larger than that of the desktop hardness tester. The main reason is that the desktop hardness tester adopts static pressure to measure the hardness, and the measurement result is highly accurate, and the mechanical stability is also high; the portable hardness tester is generally a dynamic measurement, and the error is larger than the desktop hardness tester.

Machine weight

The portable hardness tester is called the portable hardness tester because it is very light, easy to carry, and can be directly measured on-site. Now most models are equipped with a printer that can print the measured values on-site; the desktop hardness tester is relatively large. , And the weight is about 80KG, it is not convenient to take it to the site for measurement.

The above is part of the difference between the portable hardness tester and the desktop hardness tester introduced for you. If you want to know more, please feel free to contact us.