Probe excitation and return
The input of Bently Nevada 330380-90-00 accepts one 3300 XL HTPS 16 mm probe through the matched extension cable. The sensor drives the probe and receives the gap-dependent response created at the conductive target.
330380High-temperature signal conditioning
Bently Nevada · 3300 XL High Temperature Proximity System
Bently Nevada 330380-90-00 3300 XL 16 mm High Temperature Proximitor Sensor
Panel-mounted electronics for the matched nine-metre 3300 XL 16 mm high-temperature proximity measurement chain.
Product Description
Identity, signal flow and supply relationshipBently Nevada 330380-90-00 is a panel-mounted 3300 XL 16 mm High Temperature Proximitor Sensor for the 3300 XL High Temperature Proximity System. It energizes one noncontacting 16 mm high-temperature probe and converts the returned response into the voltage signal used for vibration, thrust-position, differential-expansion and other proximity measurements.
With Bently Nevada 330380-90-00 at the cooler electronics end of the chain, the probe and matched extension cable form a nine-metre transducer system. The sensor receives the probe response through the triaxial connection, applies the 3.94 V/mm scale factor, and sends the conditioned output through field wiring to the monitor.
Power for Bently Nevada 330380-90-00 enters at -19.6 to -26 VDC with 12 mA maximum consumption. Its panel-mounted aluminum enclosure operates from -52 to +100 degrees C; the probe remains the hot-zone component while the sensor and extension-cable connectors stay in a protected, non-submerged installation.
Technical Specifications
Selection, wiring and operating values| Technical Item | Bently Nevada 330380-90-00 |
|---|---|
| Brand | Bently Nevada |
| Product Type | 3300 XL 16 mm High Temperature Proximitor Sensor |
| Brand Country | United States |
| System Length | 9 m including extension cable |
| Mounting | Panel mount |
| Agency Approval | Not required |
| Power Input | -19.6 to -26 VDC, 12 mA maximum |
| Transducer Input | One 3300 XL HTPS 16 mm probe with matched extension cable |
| Output Resistance | 50 ohm |
| Linear Range | 4.0 mm, from 0.5 to 4.5 mm |
| Recommended Gap | 2.5 mm |
| Incremental Scale Factor | 3.94 V/mm +/-9.65% |
| Frequency Response | 0 to 6 kHz, +0/-3 dB typical |
| Operating Temperature | -52 to +100 degrees C |
Matched Nine-Metre Signal Path
How the probe response reaches the monitorBently Nevada 330380-90-00 is the signal-conditioning stage in a matched high-temperature proximity chain. The probe, extension cable, sensor and field wiring perform different parts of one continuous measurement path.
Matched cable capacitance
The high-temperature probe cable and extension cable complete the nine-metre transducer length used by Bently Nevada 330380-90-00. Their capacitance is part of the calibrated system, so cable selection affects the scale factor and linear range.
Monitor handoff
After conditioning, Bently Nevada 330380-90-00 presents a 50-ohm output to the receiving monitor. Three-conductor shielded field wiring can extend to 305 m, with the installation accounting for the added cable capacitance.
Panel Mounting and Measurement Envelope
Mechanical placement and usable gap rangeThe 90 mounting field in Bently Nevada 330380-90-00 defines a panel-mounted sensor rather than the DIN-rail arrangement. The enclosure dimensions, connector access and probe geometry must be considered together so the nine-metre signal chain remains serviceable.
Panel footprint
The aluminum housing of Bently Nevada 330380-90-00 uses the panel-mount geometry shown in the dimensional drawing, with 50.80 mm mounting-hole centres and space for the power/signal terminals and triaxial cable connection.
Linear gap window
A recommended 2.5 mm probe gap places Bently Nevada 330380-90-00 near the middle of its 4.0 mm linear range, which extends from 0.5 to 4.5 mm and corresponds approximately to -2 to -18 VDC.
Target and probe spacing
The measurement geometry associated with Bently Nevada 330380-90-00 uses a 30.5 mm minimum target diameter and a 152 mm minimum shaft diameter. Adjacent probes require sufficient tip separation to prevent their electromagnetic fields from interacting.
Frequently Asked Questions
Practical selection and troubleshooting questionsHow should Bently Nevada 330380-90-00 be selected when the existing installation uses DIN-rail mounting?
The 90 field in Bently Nevada 330380-90-00 specifies panel mounting; the DIN-rail version uses mounting option 91. Confirm the cabinet hardware and available mounting footprint before ordering because the two mounting arrangements should not be treated as the same mechanical installation.
Can a damaged extension cable be replaced without changing Bently Nevada 330380-90-00?
Bently Nevada 330380-90-00 operates with a matched high-temperature probe and extension-cable path whose total system length is nine metres. A replacement cable must reproduce the required system capacitance, and the probe serial information should be retained when the replacement cable is prepared.
Why can Bently Nevada 330380-90-00 lose linear range when its supply is close to -19.6 VDC?
The permitted input range is -19.6 to -26 VDC, but a supply more positive than -23.5 VDC can reduce the available linear range. Measure voltage at the Bently Nevada 330380-90-00 terminals under load and include field-wiring drop before judging the transducer signal.
What should be checked if adjacent channels around Bently Nevada 330380-90-00 show cross-talk?
Check the physical spacing of the probe tips before altering monitor settings. The general minimum separation is 64 mm for dual axial probes and 54 mm for radial vibration probes, so the installed geometry must keep the electromagnetic fields from overlapping.
How should Bently Nevada 330380-90-00 be connected to a monitor over a long field run?
Use three-conductor shielded cable from Bently Nevada 330380-90-00 to the monitor and keep the run within the 305 m maximum. Route the shield and signal conductors as required by the receiving monitor, then verify high-frequency response because longer field wiring increases capacitance.
Can the enclosure of Bently Nevada 330380-90-00 remain submerged in the installed cabinet?
No. Bently Nevada 330380-90-00 is specified for 100% condensing humidity when it is not submerged and when the connectors are protected. The high-temperature probe is the hot-zone component; the panel-mounted sensor and extension-cable connections still require a protected installation.
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