Abstract
These devices are slide potentiometers encased in a metal package with a carbon resistive element. The manufacturer has two types of potentiometers on o er. The rst type has a linear resistance characteristics, and the second – a logarithmic one. The length of the slider path is 45 mm. The primary use of potentiometers of the SVP 45 group is their application as a regulatory element in electronic audio-visual equipment and household appliances. Other applications include various measurement systems. The main advantage of such devices is their low price – the cost of one potentiometer of the measurement devices group is an expense of circa 10 PLN. Individual sensors can be combined in the form of surveying rose es, surveying micro-lines, parallel sensor units, etc. Reference points, depending on the needs, are stabilized in the form of concrete blocks with metal rods in the ground, plugs in the walls, etc. The performance principle of a single element of the system is based on measuring changes in the distance between two points. A rod is permanently a ached to one point, and resistive sensor to the second one. The resistive sensor is connected to the second end of the metal rod with a sti leg. With the change in the distance between the test points, the rod causes a change in the slider position in the resistive sensor. The sensor is connected to the check chart with signal wires. A single check chart allows us to connect, depending on the model, from six to eight sensors. Further data transfer is carried via a USB cable to a PC. The record of changes in the section length is executed by a PC using an appropriate computer program. The data record is kept as a text le on the computer disc.
Highlights
These devices are slide potentiometers encased in a metal package with a carbon resistive element
The resistive sensor is connected to the second end of the metal rod with a stiě leg
In order to implement the scaling of the resistive sensors, a calibration position has been constructed (Fig. 1), which uses a micrometer with a reading precision of 0.001 mm
Summary
These devices are slide potentiometers encased in a metal package with a carbon resistive element. Reference points, depending on the needs, are stabilized in the form of concrete blocks with metal rods in the ground, plugs in the walls, etc. The performance principle of a single element of the system is based on measuring changes in the distance between two points. A rod is permanently aĴached to one point, and resistive sensor to the second one. The resistive sensor is connected to the second end of the metal rod with a stiě leg. With the change in the distance between the test points, the rod causes a change in the slider position in the resistive sensor. A single check chart allows us to connect, depending on the model, from six to eight sensors. ** The paper was prepared within the scope of the AGH statutory research no. 11.11.150.005
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