Skip to content

ds821 standard 2 mm eddy-current displacement systems Inductive (eddy current)

ds821 standard 2 mm eddy-current displacement systems: sensors and measurement devices by Brüel & Kjær Vibro for inductive (eddy current).

Download the datasheet (opens in a new tab) Visit the Brüel & Kjær Vibro site (opens in a new tab)

Models in the series

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

Models of ds821 standard 2 mm eddy-current displacement systems compared by parameter
Parameter ds821.mc101/1/x eli-m-a17087e7f9360ed2f2d4cd0c ds821.mc101/2/x eli-m-367b473e96878c15b6147134 ds821.mc101/3/x eli-m-f83af1adfebf6dca46c1ac8e ds821.mc101/4/x eli-m-635f5a73e53f5e6b0a85c51a
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.mc101/1/x (opens in a new tab) PDF — ds821.mc101/2/x (opens in a new tab) PDF — ds821.mc101/3/x (opens in a new tab) PDF — ds821.mc101/4/x (opens in a new tab)

The industries we serve

Frequently asked questions

Answers to the most common questions about our products and services

It is a net linear displacement span of 2 mm at approximately 0.4–2.4 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 od11x driver; a separate connection cable is added according to system length. The blue colour code identifies the range family, but component and configuration codes must also match.

Documented nominal system lengths are 5, 10 or 25 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 permanently to IP65 under the specification footnote.

Didn't find the answer you were looking for?

Talk to an expert

More information

Get a quote or advice

Tell us what you need and an engineer will come back to you.

Request a quote for this product
What would you like to ask for?

Email or phone — one of them is enough

Email or phone — one of them is enough

0 of 500 words