Bently Nevada 330400-02-00 is a three-wire piezoelectric accelerometer for casing-acceleration measurement on critical machinery. The 330400 model provides 100 mV/g nominal sensitivity and a 50 g peak range and is designed to address API 670 accelerometer requirements; suffix 02 selects an M8 x 1 integral stud and suffix 00 selects no agency approvals.
- Sensor type: Three-wire piezoelectric accelerometer with internal charge amplifier
- Sensitivity: 10.2 mV/(m/s²), equivalent to 100 mV/g, ±5%
- Acceleration range: 490 m/s² (50 g) peak overall acceleration within 10 Hz to 15 kHz
- Amplitude linearity: ±1% to 490 m/s² (50 g) peak
Machine vibration acts on the piezoelectric sensing element, and the sensor's internal charge amplifier produces a dynamic voltage proportional to acceleration on separate power, signal and common conductors. It requires -24 ±0.5 VDC with 2 mA nominal bias current, has an -8.5 ±0.5 VDC output-bias voltage, and covers 10 Hz to 15 kHz within ±3 dB for casing and high-frequency vibration measurements. The case-isolated 316L stainless-steel sensor uses a three-pin MIL-C-5015 receptacle and can be paired with Bently Nevada 130539, 16925 or 16710 interconnect cables, mating connector 00531080 and suitable 43217/37442 protective mounting hardware. Official Bently documentation also identifies the 330400 with the 2300 family, 3500/70M reciprocating-machinery monitor and 3701/46 PAS/PAV inputs; wiring, excitation and measurement configuration must be verified for the chosen monitor. The transducer is mounted on a prepared bearing housing or machine casing where rotor vibration is transmitted to the measurement point. Official scenarios include gear-mesh monitoring, high-frequency impact and gas-leak signatures on reciprocating compressors, hydro-unit acceleration inputs and backward-compatible upgrades of older three-wire 23732-type acceleration systems; the requested -00 agency option must remain in a nonhazardous or otherwise approval-free installation unless the exact certified sensor variant is selected.
Important Notice: Confirm the complete physical nameplate, current Bently Nevada documentation, compatible components and installed-system configuration before installation or replacement.
Apter Power 330400-02-00 Manuals and Guides
Important Notice: The first link is the product-parameters PDF prepared only from the cited manufacturer information; the second link is the Apter Power product manual. Confirm the physical nameplate, current manufacturer documents, and host-system requirements before installation or replacement.
Gear-mesh acceleration monitoring
Measures high-frequency casing acceleration on a gearbox or geared critical machine where gear-mesh vibration is transmitted to the selected bearing housing or casing point.
Reciprocating-compressor impact monitoring
Feeds a compatible monitor such as 3500/70M with acceleration data used for high-frequency impact and gas-leak-related signatures on reciprocating machinery.
Hydro-unit casing acceleration
Connects to a compatible 3701/46 PAS or PAV acceleration input for continuous casing or bearing-housing measurements on a hydro unit.
Legacy three-wire accelerometer upgrade
Provides a backward-compatible three-wire sensor architecture for replacing older 23732-type acceleration systems without an external interface module, after monitor and wiring verification.
Read and follow the current Bently Nevada documentation and host-equipment instructions before work. Verify the complete physical nameplate and system configuration.
1
Treat 330400-02-00 as agency-approval option 00: do not claim or use CSA, ATEX or IECEx certification from the -05 option or family approval section; select the exact approved part when the area classification requires it.
2
Install the M8 x 1 stud on a properly prepared bearing housing or machine casing at 4.1 N·m and at a location that actually transmits rotor vibration; poor mounting can reduce amplitude/frequency response or create false signals.
3
Use a monitor that supplies the documented -24 ±0.5 VDC three-wire PWR/SIG/COM interface and 100 mV/g scaling; do not wire it as a two-wire IEPE sensor or as a 4-20 mA device.
4
Keep vibration, temperature and frequency inside the published limits; energy above 15 kHz, especially near resonance, significantly reduces the stated 50 g measurement range, and the IP68-equivalent statement applies to the sensor rather than its cable.
5
Match the three-pin connector and cable, protect outdoor wiring in conduit/enclosure as documented, and use mounting base 37439-02 on pre-April-2004 non-G serial-number units to reduce base-strain sensitivity.
Videos
News
Applications
