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ds821 standard 8 mm eddy-current displacement systems Inductive (eddy current)

ds821 standard 8 mm eddy-current displacement systems: sensors and measurement devices by Brüel & Kjær Vibro for inductive (eddy current).

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Models in the series

One column per model: what differs between the models of the series.

Models of ds821 standard 8 mm eddy-current displacement systems compared by parameter
Parameter ds821.mc501/1/x eli-m-d295354dc904b3627786e6eb ds821.mc501/2/x eli-m-8d3ee2ecf28fd6ee67e33598 ds821.mc501/3/x eli-m-accc593b59ad94dd9a796b93 ds821.mc501/4/x eli-m-062fe43fef07724854d6e9c6
Frequency response 0–10000 Hz 0–10000 Hz 0–10000 Hz 0–10000 Hz
Operating temperature -55–180 °C -55–180 °C -55–180 °C -55–180 °C
Contact Non-contact Non-contact Non-contact Non-contact
Status Active Active Active Active
Datasheet PDF — ds821.mc501/1/x (opens in a new tab) PDF — ds821.mc501/2/x (opens in a new tab) PDF — ds821.mc501/3/x (opens in a new tab) PDF — ds821.mc501/4/x (opens in a new tab)

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Frequently asked questions

Answers to the most common questions about our products and services

It is a net linear displacement span of 8 mm at approximately 0.6–8.6 mm target distance from the probe. It uses eddy-current measurement against conductive material, with DC to 10 kHz at −3 dB.

It requires a probe with integrated cable and a matching od15x driver; a separate connection cable is added according to system length. The black colour code identifies the range family, but component and configuration codes must also match.

Documented nominal system lengths are 5 or 10 m. Select probe cable and connection cable together for the matching total system length; do not add a generic cable without checking the configuration.

No. Sensitivity error and deviation from the reference line are specified by system length and temperature. Calibration data refer to 42CrMo4, so also check the actual shaft material.

No. The probe is documented IP68 for 2 hours at 10 bar, while the driver is IP20. Following storage or operation below −30 °C, the probe protection is reduced to IP65 under the specification footnote.

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