The complete chain measures static position and dynamic vibration on fluid-film bearing machines and can provide Keyphasor reference and speed measurements. The sensor converts probe-to-target distance into a proportional voltage output.

Code 90 is the panel-mount version. With the four-hole mounting base, the 3300 XL sensor uses the same footprint as older Proximitor designs; the base also provides electrical isolation. Panel mounting uses M3.5 or #6 screws.

Use -17.5 to -26 Vdc at up to 12 mA, or -23 to -26 Vdc with barriers. The recommended monitor cable is a tinned 3-conductor shielded triad; runs may reach 305 m, with high-frequency roll-off considered.

The probe lead plus extension cable must equal the 9.0 m Proximitor total length and remain within the documented 3300-series 5 mm or 3300 XL 8 mm input family. Do not select cable length independently of the probe lead.

Bently Nevada states that 3300 XL 8 mm components are electrically and physically interchangeable with non-XL 3300 5 mm and 8 mm components. A mixed chain is limited to the non-XL system specifications, and the 9.0 m length plus CN approval scope still need to match.

With the factory AISI 4140 steel calibration, the center reference is approximately -9 Vdc at 1.27 mm. For this standard 9 m chain, the published scale factor is 7.87 V/mm plus or minus 6.5% across the 2 mm linear range.

A supply more positive than -23.5 Vdc can reduce linear range, while long field wiring introduces high-frequency roll-off. Compare supply voltage, cable length and the probe gap with the published limits before assigning the condition to the sensor.

The official guide lists CN as the China hazardous-area option for 330180. It covers NEPSI/CCC requirements and includes ATEX/IECEx markings as applicable; the supplied-unit marking and applicable installation drawing remain the final project references.