Configured for high-frequency vibration measurement in machinery protection systems, the Bently Nevada 330400-01-00 (330400 Accelerometer Sensor) provides direct physical/electrical execution. The hardware translates mechanical surface acceleration along its primary axis into a proportional electrical charge signal, which is processed into a voltage output via internal charge amplifier electronics for delivery to monitoring modules.

Suffix Nomenclature

• 330400: Base model for the 3300 XL Accelerometer Sensor.

• -01: Mounting thread option designating 1/4-28 UNF standard stud.

• -00: Agency approval option specifying no hazardous area certifications.

Core Hardware Specifications

Rotor Dynamics and Rotor Casing Vibration Tracking

The physical deployment of the 330400-01-00 sensor focuses on tracking structural and casing acceleration profiles linked directly to rotor dynamics. Because high-speed fluid-film bearing mechanisms can damp rotor vibrations before they fully register on external structures, this accelerometer features a high resonant frequency (>30 kHz) designed to suppress mechanical cross-talk and avoid signal saturation. This ensures clear detection of high-frequency blade passing frequencies and rolling element bearing faults without interference from the underlying low-frequency rotor rotational speeds.

Procurement Package Inventory

• One (1) Bently Nevada 330400-01-00 piezoelectric accelerometer unit

• One (1) 1/4-28 to 1/4-28 mounting stud

• Two (2) Calibration record sheets documenting standard frequency response and sensitivity verification

Physical Mounting and Interface Integrity Guidelines

• Ensure the mounting surface is machined flat to 0.025 mm over the contact zone to guarantee seamless mechanical coupling and prevent high-frequency attenuation.

• Apply a thin film of silicone grease or oil interface lubricant to the machined surface before applying the final mounting torque.

• Torque the sensor housing down to a range of 3.4 N-m to 4.5 N-m using a calibrated torque wrench; exceeding this range risk permanent internal crystal deformation.

• Ground the cable shield exclusively at the monitoring rack end; ensure the field sensor end remains floating within its isolated terminal housing to bypass potential ground loop currents.

• Secure field cabling within 150 mm of the sensor head using structural tie-downs to eliminate cable slap and minimize triboelectric noise induction.

Procurement Logistics & Shipping Configuration

Delivery time: 2-7 days when payment finish via premium priority global air freight networks including DHL, FEDEX, or UPS. Heavy-gauge static-dissipative material forms the inner boundary of the anti-static industrial packaging matrix, shielding the integral charge conversion electronics from atmospheric electro-static discharge during terminal handling.

Technical Engineering FAQ

Q: Can this sensor be powered directly via standard 24 VDC industrial power supplies?

A: No, the internal electronics require a continuous constant current supply source ranging between 2 mA and 10 mA. Connecting a standard voltage source directly without current regulation will result in component failure or non-linear signal responses.

Q: Is this specific dash variant (-00) permissible for install inside Class I Division 1 environments?

A: No, the -00 option designates zero hazardous area certifications. For installation inside restricted intrinsic safety or explosion-proof boundaries, an approved prefix option such as the -05 multiple approval option must be specified.

Q: Does internal capacitance change due to long cable lengths alter the sensor's baseline scale factor?

A: The onboard charge amplifier architecture minimizes the impact of cable capacitance on overall sensitivity. However, extreme cable runs (exceeding 300 m) can cause high-frequency roll-off effects depending on the monitoring monitor's source drive limits.

Q: Can this device withstand continuous exposure to oil vapor and moisture?

A: Yes, the exterior housing is fabricated from 316L stainless steel and hermetically sealed to withstand continuous exposure to typical industrial lubricants and synthetic machine fluids, provided the cable connector boot is sealed correctly.