The influence of misalignment on the uncertainty of vertical torque calibration machine

Khaled, K.M.; Aggag, G.; Abuelezz, A. E.; El‐Sherbiny, M.

doi:10.1007/s12647-011-0015-4

Cited by 3 publications

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“…Torque measuring systems mainly consist of a torque transducer and a measurement amplifier and may be used inside laboratories or as part of outdoor setups [1]. In either case, knowing the influence of environmental factors such as relative humidity (RH) on the measuring instruments is central to understanding how they perform [2,3]. The investigation of the effect of relative humidity on the zero signal of a torque measuring system is relevant to determine how it contributes to the error component and drift of the measuring system readings [4].…”

Section: Introductionmentioning

confidence: 99%

An investigation on the effect of humidity on the zero signal of a strain gauge measuring system

Khaled

Mahmoud

2018

Univ. Sci.

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Humidity is one of the most important ambient factors influencing torque calibration readings. The present study addresses the effect of relative humidity on the readings of reference torque transduction and amplification devices. The results revealed a linear effect of increasing humidity on the readings of a DMP40 torque amplifier and a torque transducer at four different temperatures. Furthermore, humidity effects were smaller on the DMP40 amplifier than on the torque transducer across all four temperatures. The results also showed that the summed effects of humidity on amplifier and transducer calibration readings were larger when each device was operated under different humidity and temperature conditions (<em>i.e.</em> torque amplifier placed inside a controlled climate chamber and transducer outside, and vice-versa); as opposed to smaller summed effects, observed when both devices were operated under the same ambient conditions (<em>i.e.</em> both inside the chamber). Therefore, it is recommended to test the effect of humidity in setups where the two devices are under common humidity conditions. This is likely to lower the uncertainty parameter of obtained torque calibration readings and is a useful consideration for inter-laboratory comparisons and performance testing.

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Section: Introductionmentioning

confidence: 99%

An investigation on the effect of humidity on the zero signal of a strain gauge measuring system

Khaled

Mahmoud

2018

Univ. Sci.

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Review of performance testing of high precision reducers for industrial robots

Qiu

XUE

2021

Measurement

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The investigation of effects of humidity and temperature on torque transducers calibration

Tuğcu

Feyzullahoğlu

2021

Tm - Technisches Messen

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Torque transducer is mechanical device that converts an energy form to another energy form. Torque transducers are calibrated by using machines such as dead weight calibration machines and reference torque transducer systems. Torque transducers are at risk of being affected by various environmental conditions such as temperature and humidity, and deviating from expected measurement results due to strain gauges on them. These factors should be kept under control, if this is not possible, contribution of ambient temperature and air humidity effects on measurement results should be taken into consideration. In this study, measurements were made according to DIN 51309 directive, and effect of other parameter changes on measurement uncertainty, while temperature and humidity kept constant in turn, was investigated. In this study, the goal was to reduce measurement uncertainty of calibration by determining the optimum temperature and humidity values in test environment. As a result of this study, the optimum values are obtained. The lowest measurement uncertainty was found at 21 °C and 50 % RH in this experimental study. In a test environment where optimum environmental conditions are obtained as a result of this study, the torque transducers will have the opportunity to work with maximum precision.

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The influence of misalignment on the uncertainty of vertical torque calibration machine

Cited by 3 publications

References 0 publications

An investigation on the effect of humidity on the zero signal of a strain gauge measuring system

An investigation on the effect of humidity on the zero signal of a strain gauge measuring system

Review of performance testing of high precision reducers for industrial robots

The investigation of effects of humidity and temperature on torque transducers calibration

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