Esta tensión debe aplicarse, como mínimo, a la entrada de ajuste cero para que el ajuste cero pueda iniciarse de forma segura.
No debe superarse esta tensión en la entrada de ajuste cero para que no se inicie el ajuste cero.
El alargamiento nominal constituye la alargamiento para la que se ha concebido nominalmente el sensor, es decir, hasta la cual se cumplen las especificaciones de técnica de medición. En los siguientes datos, el porcentaje siempre hace referencia al alargamiento nominal.
Resistencia de carga máxima de una salida de corriente. La carga representa la resistencia de medición (resistencia de entrada de la tarjeta de medición analógica) para convertir la corriente de señal en una tensión medible.
Directiva/norma sobre inmunidad a interferencias, emisiones electromagnéticas y radiaciones.
Resistencia del sensor a los choques (choques mecánicos) sin que el sensor experimente modificaciones significativas permanentes en sus propiedades técnicas de medición hasta la fuerza nominal.
El consumo máximo de corriente en condiciones nominales, la corriente de conexión puede ser mayor durante algunos ms.
La desviación de linealidad representa la desviación máxima de una curva característica de un sensor determinada con una fuerza creciente desde la línea recta de referencia a través del punto cero en condiciones ideales de instalación. La línea recta de referencia constituye una función de compensación de primer grado, cuya pendiente se determina de manera que la suma de los cuadrados de todas las desviaciones de la señal de la línea recta de referencia da como resultado un mínimo (en la literatura: método de mínimos cuadrados). La principal causa para una desviación de linealidad suele ser una introducción de fuerza no simétrica.
La desviación del punto cero describe la desviación máxima de la señal cero en estado desmontado del valor cero en relación con el valor nominal. En el caso de sensores de fuerza por debajo de 100 N, se debe garantizar que el sensor se encuentre sobre una superficie plana sin fuerza.
La fluencia describe el cambio dependiente del tiempo en la señal de salida del sensor de fuerza con carga constante. Se distingue entre fluencia de carga y descarga. En caso de fluencia de carga, la modificación de la señal de medición con fuerza constante se examina durante un período de tiempo más largo. En caso de fluencia de descarga, el sensor de fuerza se carga primero con una fuerza nominal constante. Tras la descarga alivio, se evalúa la modificación en la señal de medición en estado de descarga.
Resonant frequency with which the unloaded force sensor parts, without force introduction, oscillates after shock-like excitation in the direction of the measuring axis, its base provided for securing it being coupled to an adequate mass.
At this frequency the output signal is attenuated by 3dB (to about 70.7%).
Nominal force is the force for which the sensor is nominally designed, i.e. up to which the metrological specifications are complied with. Depending on the type, a distinction can be made between tensile and nominal compression force. In the following specifications, the percentage always refers to the nominal force.
Permissible static lateral force which does not cause any permanent significant changes in the physical properties of the force sensor when simultaneously loaded with the nominal force.
Hysteresis, or also known in the literature as hysteresis error, is the difference between the output signals of an up and down series under the same load, relative to the output signal under increasing load, under ideal installation conditions. Influencing factors are the material hysteresis of the sensor body, the hysteresis in the measuring principle as well as external frictional influences caused by the measuring setup.
The zero adjustment pulse is the minimum time in which \(U_{Ta}\) must be exceeded to start zero adjustment.
Permissible static bending limit which does not cause any permanent significant changes in the physical properties of the force sensor when simultaneously loaded with the nominal force.
Ohmic resistance between the +VS and -VS voltage supply connections of a passive sensor.
Ohmic resistance between the sig+ and sig- signal outputs of a passive sensor.
Corrosion protection describes the corrosion category in DIN EN ISO 12944-2 according to which the sensor can be used without problems under certain ambient conditions.
Permissible torque of the force sensor around the measuring axis which does not cause any permanent significant changes in the physical properties of the force sensor when simultaneously loaded with the nominal force.
Positive change in the output signal with defined direction of the input parameter.
Ohmic resistance of the entire measuring bridge.
Load limit related to the nominal force up to which the sensor can undergo more than at least 1 million dynamic load cycles without permanent changes in the metrological properties. Also often to be found in literature under the term relative working stroke.
Ohmic resistance, measured between any connecting cable and the sensor body under a defined test voltage.
Minimum input resistance of the connected measuring system.
Smallest possible subdivision of transferable measured values in digital systems.
The minimum breaking force describes the force of the force sensor above which mechanical destruction is to be expected. If the load exceeds the minimum breaking force, further use of the sensor is no longer recommended.
Effective value of the noise of the output signal in the specified frequency range.
The operating temperature range describes the temperature range in which the sensor complies with the physical specifications.
Repeatability describes the accuracy of the sensor when the installation position is not changed. The maximum difference between the output signals with the same force is determined from several measurement series when the installation position is not changed. Repeatability is particularly important for force sensors that are installed only once.
Reproducibility describes the accuracy of the sensor when the installation position is changed. The maximum difference between the output signals with the same force is determined from several measurement series in different installation positions. Reproducibility is particularly important for force sensors that measure temporarily and are installed and removed frequently.
Sensor stiffness is defined as the ratio of force to axial deformation of the sensor body. The fundamental resonant frequency of the sensor can be decisively influenced with the help of sensor stiffness.
Temperature range in which the sensor can be stored without mechanical or electrical stress, without any permanent significant changes in its physical properties being detectable when the sensor is reused within the operating temperature range.
In this voltage range, the sensor can be operated permanently over the entire operating temperature range without exceeding the limits of the physical properties and without impairing the electrical protective circuit.
Within this range, the sensor is able to carry out zero adjustment and adjust the output signal to the zero signal.
Type of output signal of the sensor with electric amplifier. The output signal is proportional to the nominal force. For a 100 N force sensor with a voltage output of 0 - 10 V, 0 V corresponds to 0 N and 10 V corresponds to a nominal force of 100 N.
Overload is the force up to which the force sensor remains fully functional under a single load and continues to comply with the technical specifications. The sensor does not undergo any plastic deformation.
Stabilized supply voltage for the passive sensor.
The measuring rate describes the internal sampling rate of the analog sensor signal.
The nominal measuring path describes the path that the two external force introduction points or surfaces of the force sensor take relative to each other in the measuring direction as a result of a load with nominal force. The typical nominal measuring path for diaphragm force sensors is approx. 0.1 mm.
The protection class indicates to what extent the sensor is protected against moisture and dust as well as the ingress of foreign bodies.
Relative deviation of sensitivity under nominal load from nominal sensitivity.
\(TK_{E}\) describes the relative change in the sensitivity of the force sensor as a result of the change in the ambient temperature \(T_{i}\) of 10 K. This information is given in % per 10 K.
\(TK_{0}\) describes the change of the zero signal of the force sensor related to the nominal sensitivity due to a change in the ambient temperature \(T_{i}\) of 10 K. This information is given in % per 10 K.
This is the maximum time the sensor needs to perform zero adjustment.
Ratiometric output signal of a passive sensor at nominal force. The output signal is proportional to the bridge voltage \(U_{E}\) .
Resistance of the sensor to vibration, without the sensor experiencing any permanent significant changes in its metrological properties up to nominal force.
Resistance of the sensor to forced sinusoidal oscillatory movements with a specified degree of severity, without permanent significant changes in its metrological properties being detectable up to nominal force.