Humidity and temperature effects on torque transducers, bridge calibration unit and amplifiers

Khaled, K.M.; Röske, Dirk; Abuelezz, A. E.; El‐Sherbiny, M.

doi:10.1016/j.measurement.2015.07.007

Cited by 10 publications

(9 citation statements)

References 4 publications

(4 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…One could make the argument that you do not know whether uncertainty contributions are insignificant until you have calculated them [12]. At that point you can still provide evidence by demonstrating by how much they are insignificant.…”

Section: Necessities For Reference Transducersmentioning

confidence: 99%

Advances in the Design of Dmp41 - Measurement Chains Using Examples With Torque and Multi-Axis Transducers

Schäfer¹

2023

Proceedings of the 24th IMEKO TC3 Conference on Measurement of Force, Mass and Torque

View full text Add to dashboard Cite

When evaluating the performance of measuring technology for mechanical quantities based on strain gauges (S.G.), one essential advantage is the possibility to realise smallest measurement uncertainties (MU).In these applications, S.G. must be able coping with the further tightening of MU budgets. Thus, two advances in the determination of uncertainty of high precision measurement chains based on S.G., are discussed in here. The two uncertainty contributions, what are not always considered so far, are humidity influences and long-term stability.To support today's sophisticated MU calculations, these two parameters have been further investigated and conclusions are drawn for each of measurement chain elements -reference transducers & precision amplifiers.

show abstract

Section: Necessities For Reference Transducersmentioning

confidence: 99%

Advances in the Design of Dmp41 - Measurement Chains Using Examples With Torque and Multi-Axis Transducers

Schäfer¹

2023

Proceedings of the 24th IMEKO TC3 Conference on Measurement of Force, Mass and Torque

View full text Add to dashboard Cite

show abstract

“…In [6] the stability of BN100A under humidity and/or temperature change has been verified, while DMP40, the predecessor of DMP41, still seemed to show a slight linear trend line with increasing humidity or temperature. This is also the reason why we are paying close attention to this point: in the selection of electronic components, but also in such factors as the instruments' inner space and even in the housing design, such as the general use of metal housings [7]. It was also pointed out by other sources [8], that due to necessity of the condensation of water at the inside wall the cabinet the use of metal housing is essential for building up precision amplifiers…”

Section: Influence Of Humidity On High-precision Instruments For Sgmentioning

confidence: 99%

New strain gauge-based torque reference chain offering smallest measurement uncertainties

Schäfer

2019

19th International Congress of Metrology (CIM2019)

View full text Add to dashboard Cite

New measurement approaches for mechanical quantities based on strain gauge technology offer one feature above all else: the possibility to realize smallest measurement uncertainties. This is particularly important for metrological infrastructure, i.e. realization of metrological traceability chain to support applications in aerospace or in automotive industry. Achievements toward smaller measurement uncertainties are shown by realization of a novel torque reference sensor TN with improved usability for inter-laboratory comparisons in combination with a surprisingly compact precision amplifier called Quantum MX238B.

show abstract

“…Current torque transducers are isolated from the environment such that the effect of RH on the sensing element is minimized [8]. Nonetheless, changes in RH can considerably affect transducer's sensitivity [9]. Thus far, complicated and extensive methodologies have been used to measure humidity effects, but Bruge [8] proposed a simpler approach measure this effect on torque transducers inside calibration laboratories, with fewer resources and at a lower cost.…”

Section: Introductionmentioning

confidence: 99%

“…Thus far, complicated and extensive methodologies have been used to measure humidity effects, but Bruge [8] proposed a simpler approach measure this effect on torque transducers inside calibration laboratories, with fewer resources and at a lower cost. The effect of humidity on the zero signal of a reference torque transducer in known to vary from + 3.3 to -9 nV/V % RH, and the influence of humidity on a DMP40 measurement amplifier, studied at 22 • C, was found to vary from 0.27 to -1.8 nV/V % RH [9].…”

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.

View full text Add to dashboard Cite

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.

show abstract

Humidity and temperature effects on torque transducers, bridge calibration unit and amplifiers

Cited by 10 publications

References 4 publications

Advances in the Design of Dmp41 - Measurement Chains Using Examples With Torque and Multi-Axis Transducers

Advances in the Design of Dmp41 - Measurement Chains Using Examples With Torque and Multi-Axis Transducers

New strain gauge-based torque reference chain offering smallest measurement uncertainties

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

Contact Info

Product

Resources

About