Product Description:

The Bently Nevada 330194-11-21-15-00 is an Extended Temperature Range Proximity Probe Extension Cable belonging to the 3300 XL 8 mm Proximity Transducer System. This heavy-duty system is for non-contacting vibration, displacement, and shaft-position monitoring on critical industrial rotating machinery.The system provides an output voltage that is directly proportional to the distance between the probe tip and the observed conductive surface and can measure both static (position) and dynamic (vibration) values. The system’s primary applications are vibration and position measurements on fluid-film bearing machines, as well as Keyphasor reference and speed measurements.

Frequently Asked Questions (FAQ)

Q:What target material is this system calibrated for out of the box?

A:Standard Bently Nevada proximity probes are factory calibrated for AISI 4140 steel targets. If your machine features a rotor shaft constructed from a different material (like stainless steel or aluminum), the sensor will require custom calibration or a adjusted scale factor due to changes in electrical conductivity and magnetic permeability.
Q:What is the typical gap voltage setting for this sensor?
A:When properly installed, the target "gap voltage" should read between -9 V DC and -11 V DC at the Proximitor sensor output terminal. This indicates that the probe tip is perfectly centered within its linear calibration range relative to the target shaft.

Q:What does the "ETR" rating mean for this probe?
A:The Extended Temperature Range (ETR) designation means both the probe head and its integrated cable are engineered to withstand extreme environment temperatures. ETR probes typically operate continuously in a temperature range from -35°C to +200°C (-31°F to +392°F), making them ideal for high-heat environments like steam turbines or exhaust locations.

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