| Resistor length | 1.3 mm |
| Resistance diameter | 1.3 to 3.3 mm |
| Measurement range | 2,000 to 6,000 °K |
Measurement resistors
1 - 4
| Resistance diameter | 1.3 to 3 mm |
| Resistor length | 1.3 mm |
| Measurement range | -60 to 300 °C |
| Applications | Vehicles & Road Traffic Electrical industry Energy |
| Resistance diameter | 6 mm |
| Resistor length | 30 mm |
| Measurement range | -200 to 450 °C |
| Measurement range | -200 to 850 °C |
| Material that surrounds the resistor | Ceramic |
| Customized version | Other dimensions please inquire |
Measuring resistors are temperature sensors that apply the dependence of electrical resistance on temperature to probes as a measuring effect. They are designed for installation in industrial resistance thermometers or in an integrated circuit.
What are measuring resistors and what are they used for?
Measuring resistors are electrical resistors that are used in electrical circuits to limit or measure the current flow. They are used to limit the electrical current in a circuit in order to prevent damage to the components or to measure the current flow.
Measuring resistors can come in different shapes and sizes, depending on the specific application. They can be made of wire, carbon, metal or special materials and usually have a defined resistance value.
Measuring resistors are used in a wide range of applications, including
1. Current measurement: They are used to measure the current flow in a circuit by connecting them in series with the circuit to be measured. The voltage drop across the resistor is measured and used with Ohm's law to calculate the current.
2. Voltage division: Measuring resistors are used to convert a high voltage in a circuit to a lower voltage that is suitable for measuring or operating other components.
3. Current limitation: In some circuits it is necessary to limit the current flow to a certain value to prevent damage to the components. Measuring resistors are used to limit the current flow and ensure that it remains within the intended limits.
4. Signal processing: Measuring resistors are also used in various types of signal processing circuits to control and regulate the signal flow.
Overall, measuring resistors are important components in electrical circuits for limiting, measuring and controlling the flow of current.
Measuring resistors can come in different shapes and sizes, depending on the specific application. They can be made of wire, carbon, metal or special materials and usually have a defined resistance value.
Measuring resistors are used in a wide range of applications, including
1. Current measurement: They are used to measure the current flow in a circuit by connecting them in series with the circuit to be measured. The voltage drop across the resistor is measured and used with Ohm's law to calculate the current.
2. Voltage division: Measuring resistors are used to convert a high voltage in a circuit to a lower voltage that is suitable for measuring or operating other components.
3. Current limitation: In some circuits it is necessary to limit the current flow to a certain value to prevent damage to the components. Measuring resistors are used to limit the current flow and ensure that it remains within the intended limits.
4. Signal processing: Measuring resistors are also used in various types of signal processing circuits to control and regulate the signal flow.
Overall, measuring resistors are important components in electrical circuits for limiting, measuring and controlling the flow of current.
What types of measuring resistors are there?
There are different types of measuring resistors that are used depending on the application and requirements:
1. Fixed resistors: These are resistors with a fixed, predefined value that cannot be changed. They are often used for precise measurements in electronic circuits.
2. Adjustable resistors: These resistors can be adjusted manually or electronically to achieve the desired resistance value. They are often used for adjustment and calibration purposes.
3. Temperature-dependent resistors: These resistors change their resistance value depending on the temperature. Examples of this are the PT100 and the thermistor, which are used in temperature sensors.
4. Light-dependent resistors: These resistors change their resistance value depending on the light intensity. They are used in applications such as brightness sensors and photoresistors.
5. Thin-film resistors: These resistors are produced by vapor deposition or sputtering a thin layer of resistive material onto a substrate. They offer high precision and stability.
6. Wire wound resistors: These resistors consist of a wire that is wound spirally around a core. They offer high performance and can be designed for high current and voltage values.
7. SMD resistors: SMD stands for "Surface Mount Device" and refers to resistors that can be soldered directly onto the surface of a circuit board. They are small and offer a high packing density.
This list is not exhaustive and there are many other types of measuring resistors that have been developed for specific applications.
1. Fixed resistors: These are resistors with a fixed, predefined value that cannot be changed. They are often used for precise measurements in electronic circuits.
2. Adjustable resistors: These resistors can be adjusted manually or electronically to achieve the desired resistance value. They are often used for adjustment and calibration purposes.
3. Temperature-dependent resistors: These resistors change their resistance value depending on the temperature. Examples of this are the PT100 and the thermistor, which are used in temperature sensors.
4. Light-dependent resistors: These resistors change their resistance value depending on the light intensity. They are used in applications such as brightness sensors and photoresistors.
5. Thin-film resistors: These resistors are produced by vapor deposition or sputtering a thin layer of resistive material onto a substrate. They offer high precision and stability.
6. Wire wound resistors: These resistors consist of a wire that is wound spirally around a core. They offer high performance and can be designed for high current and voltage values.
7. SMD resistors: SMD stands for "Surface Mount Device" and refers to resistors that can be soldered directly onto the surface of a circuit board. They are small and offer a high packing density.
This list is not exhaustive and there are many other types of measuring resistors that have been developed for specific applications.
How do measuring resistors work and how can they influence the flow of electrical current?
Measuring resistors are electrical components that are used to measure the electrical current flow in a circuit. They are made of a material with certain electrical attributes that change the resistance to the flow of current.
Measuring resistors work according to Ohm's law, which states that the current flow (I) through an electrical resistor (R) is proportional to the applied voltage (U): I=U/R.
By inserting a measuring resistor into a circuit, the current flow is limited by the resistor. The greater the resistance, the greater the voltage drop across the resistor and the lower the current flow. Conversely, if the resistance is smaller, the voltage drop is lower and the current flow is greater.
Measuring resistors can also influence the current flow through other attributes, such as the temperature dependence of the resistance. Some materials from which measuring resistors are made have a positive temperature coefficient, which means that their resistance increases as the temperature rises. Other materials have a negative temperature coefficient where the resistance decreases with increasing temperature.
Measuring resistors are used in many applications, for example in measuring devices in which the electrical current flow has to be measured. They can also be used in circuits to limit or control the flow of current.
Measuring resistors work according to Ohm's law, which states that the current flow (I) through an electrical resistor (R) is proportional to the applied voltage (U): I=U/R.
By inserting a measuring resistor into a circuit, the current flow is limited by the resistor. The greater the resistance, the greater the voltage drop across the resistor and the lower the current flow. Conversely, if the resistance is smaller, the voltage drop is lower and the current flow is greater.
Measuring resistors can also influence the current flow through other attributes, such as the temperature dependence of the resistance. Some materials from which measuring resistors are made have a positive temperature coefficient, which means that their resistance increases as the temperature rises. Other materials have a negative temperature coefficient where the resistance decreases with increasing temperature.
Measuring resistors are used in many applications, for example in measuring devices in which the electrical current flow has to be measured. They can also be used in circuits to limit or control the flow of current.
What attributes should measuring resistors have in order to provide accurate measurement results?
To provide accurate measurement results, measuring resistors should have the following attributes:
1. Precision: Measuring resistors should be highly accurate and have only minimal deviations from their nominal value. This enables precise measurement of electrical quantities.
2. Stability: Measuring resistors should be stable and their values should not change over time. A stable resistance characteristic is important in order to be able to carry out repeatable and reliable measurements.
3. Temperature coefficient: The temperature coefficient of a measuring resistor indicates how much its resistance value changes with temperature. In order to achieve accurate measurement results, measuring resistors should have a low temperature coefficient to minimize temperature deviations.
4. Low noise level: Measuring resistors should have a low noise level to minimize interference and signal distortion. A low noise level is particularly important for sensitive measurements with low signal levels.
5. Linearity: Measuring resistors should have a linear resistance characteristic to enable accurate measurements over the entire measuring range. A non-linear resistance characteristic can lead to distortions and inaccurate measurement results.
6. Isolation: Measuring resistors should have sufficient insulation to prevent unwanted voltage or current leaks. This is particularly important to ensure correct separation between different circuits or measuring points.
7. Little influence on the measured system: Measuring resistors should have as little influence as possible on the measured system so as not to falsify the measurement results. This means that they ideally have a minimal influence on the voltage or current they measure.
It is important to note that the exact requirements for measuring resistors can vary depending on the application. It is advisable to check the specific requirements and technical data for the desired application in order to achieve the best results.
1. Precision: Measuring resistors should be highly accurate and have only minimal deviations from their nominal value. This enables precise measurement of electrical quantities.
2. Stability: Measuring resistors should be stable and their values should not change over time. A stable resistance characteristic is important in order to be able to carry out repeatable and reliable measurements.
3. Temperature coefficient: The temperature coefficient of a measuring resistor indicates how much its resistance value changes with temperature. In order to achieve accurate measurement results, measuring resistors should have a low temperature coefficient to minimize temperature deviations.
4. Low noise level: Measuring resistors should have a low noise level to minimize interference and signal distortion. A low noise level is particularly important for sensitive measurements with low signal levels.
5. Linearity: Measuring resistors should have a linear resistance characteristic to enable accurate measurements over the entire measuring range. A non-linear resistance characteristic can lead to distortions and inaccurate measurement results.
6. Isolation: Measuring resistors should have sufficient insulation to prevent unwanted voltage or current leaks. This is particularly important to ensure correct separation between different circuits or measuring points.
7. Little influence on the measured system: Measuring resistors should have as little influence as possible on the measured system so as not to falsify the measurement results. This means that they ideally have a minimal influence on the voltage or current they measure.
It is important to note that the exact requirements for measuring resistors can vary depending on the application. It is advisable to check the specific requirements and technical data for the desired application in order to achieve the best results.
How are measuring resistors used in circuits and how can they be connected to other components?
Measuring resistors are used in circuits to measure the current through a particular component or to measure the voltage drop across a component. They are normally connected in series to the component via which the current or voltage drop is to be measured.
If the current is to be measured through a component, the measuring resistor is connected in series with the component. The current then flows through the measuring resistor and generates a voltage drop that can be measured. The value of the measuring resistor is selected so that the voltage drop across the measuring resistor is proportional to the current through the component.
If the voltage drop across a component is to be measured, the measuring resistor is connected in parallel to the component. The measuring resistor then generates a current that is proportional to the voltage drop across the component. This current can then be measured to determine the voltage drop.
Measuring resistors can be connected to other components in various ways. In most cases, they are inserted directly into the circuit, either as a separate component or as part of an integrated circuit. They can also be used together with other resistors in a resistor network to create a specific resistor combination.
In addition, measuring resistors can be connected to other components in order to record the measured value. This can be done by using measuring devices such as multimeters or oscilloscopes, which can measure the current or voltage drop across the measuring resistor. The measured values can then be used to calculate the current or voltage drop across the component.
If the current is to be measured through a component, the measuring resistor is connected in series with the component. The current then flows through the measuring resistor and generates a voltage drop that can be measured. The value of the measuring resistor is selected so that the voltage drop across the measuring resistor is proportional to the current through the component.
If the voltage drop across a component is to be measured, the measuring resistor is connected in parallel to the component. The measuring resistor then generates a current that is proportional to the voltage drop across the component. This current can then be measured to determine the voltage drop.
Measuring resistors can be connected to other components in various ways. In most cases, they are inserted directly into the circuit, either as a separate component or as part of an integrated circuit. They can also be used together with other resistors in a resistor network to create a specific resistor combination.
In addition, measuring resistors can be connected to other components in order to record the measured value. This can be done by using measuring devices such as multimeters or oscilloscopes, which can measure the current or voltage drop across the measuring resistor. The measured values can then be used to calculate the current or voltage drop across the component.
What factors should be considered when selecting a measuring resistor in order to achieve optimum results?
When selecting a measuring resistor, various factors should be taken into account in order to achieve optimum results. Here are some important points:
1. Resistance value: The resistance value should be selected so that it covers the desired measuring range and provides sufficient resolution. A resistance that is too low can lead to the meter being overloaded, while a resistance that is too high can lead to insufficient accuracy.
2. Accuracy: The measuring resistor should have a high degree of accuracy in order to provide reliable measurement results. The accuracy is usually specified by the tolerance value of the resistance.
3. Temperature coefficient: The temperature coefficient indicates how much the resistance value changes with temperature. A low temperature coefficient is important in order to make measurements independent of temperature fluctuations.
4. Performance: The measuring resistor should have the required capacity to cope with the current or voltage occurring. If the resistor is too small, it may overheat or be damaged.
5. Stability: The resistor should be highly stable to ensure long-term and repeatable measurement accuracy.
6. Noise: The measuring resistor should have the lowest possible noise in order to enable interference-free measurement.
7. Costs: The cost of the measuring resistor should also be taken into account in order to achieve an optimum price-performance ratio.
It is important to consider these factors with regard to the specific requirements of the measurement, as different applications may have different requirements.
1. Resistance value: The resistance value should be selected so that it covers the desired measuring range and provides sufficient resolution. A resistance that is too low can lead to the meter being overloaded, while a resistance that is too high can lead to insufficient accuracy.
2. Accuracy: The measuring resistor should have a high degree of accuracy in order to provide reliable measurement results. The accuracy is usually specified by the tolerance value of the resistance.
3. Temperature coefficient: The temperature coefficient indicates how much the resistance value changes with temperature. A low temperature coefficient is important in order to make measurements independent of temperature fluctuations.
4. Performance: The measuring resistor should have the required capacity to cope with the current or voltage occurring. If the resistor is too small, it may overheat or be damaged.
5. Stability: The resistor should be highly stable to ensure long-term and repeatable measurement accuracy.
6. Noise: The measuring resistor should have the lowest possible noise in order to enable interference-free measurement.
7. Costs: The cost of the measuring resistor should also be taken into account in order to achieve an optimum price-performance ratio.
It is important to consider these factors with regard to the specific requirements of the measurement, as different applications may have different requirements.
How can measuring resistors be calibrated and checked to ensure their accuracy?
The following steps can be taken to check and calibrate the accuracy of measuring resistors:
1. Comparison with a reference resistor: The measuring resistor to be checked is compared with a known reference resistor. This can be done either by connecting directly to the reference resistor or by using a resistance meter. If the measuring resistor and the reference resistor have almost the same resistance value, it can be assumed that the measuring resistor is accurate.
2. Temperature compensation: Measuring resistors can be influenced by temperature fluctuations. It is therefore important to ensure that the temperature is stable during calibration. Temperature sensors can be used to monitor the temperature and, if necessary, calculate compensation factors to increase the accuracy of the measuring resistor.
3. Testing the linearity: A measuring resistor should follow linear resistance changes. To check this, a known input signal can be applied and the corresponding output voltage or output current can be measured. The measured values should match the expected values to confirm the linearity of the measuring resistor.
4. Long-term stability tests: Measuring resistors should also be tested for stability over a longer period of time. This can be done by continuous measurements over a certain period of time or by periodic checks. If the measuring resistor shows no significant deviations over time, it can be assumed that it is stable.
5. Traceability: To ensure that the calibration of the measuring resistor is reliable, it should be traceable. This means that the calibration should be based on national or international standards provided by accredited laboratories or institutions. This ensures that the calibration of the measuring resistor is based on accurate and reliable reference values.
It should be noted that the exact steps for calibrating and checking measuring resistors may vary depending on the specific resistor type and application. It is recommended to follow the manufacturer's instructions and guidelines and, if necessary, use professional calibration services to ensure that the accuracy of the measuring resistor is guaranteed.
1. Comparison with a reference resistor: The measuring resistor to be checked is compared with a known reference resistor. This can be done either by connecting directly to the reference resistor or by using a resistance meter. If the measuring resistor and the reference resistor have almost the same resistance value, it can be assumed that the measuring resistor is accurate.
2. Temperature compensation: Measuring resistors can be influenced by temperature fluctuations. It is therefore important to ensure that the temperature is stable during calibration. Temperature sensors can be used to monitor the temperature and, if necessary, calculate compensation factors to increase the accuracy of the measuring resistor.
3. Testing the linearity: A measuring resistor should follow linear resistance changes. To check this, a known input signal can be applied and the corresponding output voltage or output current can be measured. The measured values should match the expected values to confirm the linearity of the measuring resistor.
4. Long-term stability tests: Measuring resistors should also be tested for stability over a longer period of time. This can be done by continuous measurements over a certain period of time or by periodic checks. If the measuring resistor shows no significant deviations over time, it can be assumed that it is stable.
5. Traceability: To ensure that the calibration of the measuring resistor is reliable, it should be traceable. This means that the calibration should be based on national or international standards provided by accredited laboratories or institutions. This ensures that the calibration of the measuring resistor is based on accurate and reliable reference values.
It should be noted that the exact steps for calibrating and checking measuring resistors may vary depending on the specific resistor type and application. It is recommended to follow the manufacturer's instructions and guidelines and, if necessary, use professional calibration services to ensure that the accuracy of the measuring resistor is guaranteed.
What challenges can arise when using measuring resistors and how can they be solved?
Various challenges can arise when using measuring resistors. Here are some examples:
1. Temperature dependence: Measuring resistors can be temperature-dependent, which can lead to inaccurate measurement results. One solution is the use of temperature-compensated resistors or the implementation of temperature compensation in the measuring circuit.
2. Noise: Measuring resistors can generate noise, especially at higher resistance values. One way to solve this problem is to use low-impedance measuring resistors or to implement noise suppression techniques such as filtering or amplification.
3. Accuracy: Measuring resistors cannot provide the desired accuracy due to tolerances and manufacturing inaccuracies. One solution to this is the use of high-precision resistors or the implementation of calibration procedures to improve measurement accuracy.
4. Influence of the line resistances: When using measuring resistors in circuit components, the resistances of the cables can have an influence on the measurement results. One solution is to use shielded cables or to compensate for the cable resistances in the measuring circuit.
5. Stability in long-term operation: Measuring resistors can change their attributes over time, which can lead to inaccurate measurement results. One solution is to use high-quality, stable resistors or to regularly calibrate and check the measuring circuit.
It is important to consider the specific requirements of the application and take appropriate measures to overcome the challenges of using measuring resistors.
1. Temperature dependence: Measuring resistors can be temperature-dependent, which can lead to inaccurate measurement results. One solution is the use of temperature-compensated resistors or the implementation of temperature compensation in the measuring circuit.
2. Noise: Measuring resistors can generate noise, especially at higher resistance values. One way to solve this problem is to use low-impedance measuring resistors or to implement noise suppression techniques such as filtering or amplification.
3. Accuracy: Measuring resistors cannot provide the desired accuracy due to tolerances and manufacturing inaccuracies. One solution to this is the use of high-precision resistors or the implementation of calibration procedures to improve measurement accuracy.
4. Influence of the line resistances: When using measuring resistors in circuit components, the resistances of the cables can have an influence on the measurement results. One solution is to use shielded cables or to compensate for the cable resistances in the measuring circuit.
5. Stability in long-term operation: Measuring resistors can change their attributes over time, which can lead to inaccurate measurement results. One solution is to use high-quality, stable resistors or to regularly calibrate and check the measuring circuit.
It is important to consider the specific requirements of the application and take appropriate measures to overcome the challenges of using measuring resistors.