Bently Nevada 330500-00-00 Velomitor Sensor
A 100 mV/in/s piezo-velocity sensor supplied without a mounting adapter and without an agency-approval option.
Product Identification
330500-00-00 is the base Bently Nevada Velomitor piezo-velocity sensor configuration. It converts casing vibration into a velocity-proportional signal for monitoring rotating machinery.
The first 00 indicates that no mounting-thread adapter is supplied, and the second 00 specifies that agency approval is not required. An appropriate adapter or engineered mounting interface must therefore be addressed separately.
Engineering Data
| Manufacturer | Bently Nevada, a Baker Hughes business |
|---|---|
| Model | 330500-00-00 |
| Product Family | 330500 Velomitor |
| Sensitivity | 100 mV/in/s ±5% |
| Frequency Response | 4.5 Hz to 5 kHz ±3 dB |
| Velocity Range | 50 in/s peak |
| Power Requirement | -22 to -30 V DC |
| Output Bias | -12 ±3 V DC |
| Mounting Adapter | None supplied |
| Approval Option | Not required |
| Connector | Two-pin MIL-C-5015 |
| Case | Hermetically sealed 316L stainless steel |
Functions
- Measures casing vibration directly in velocity engineering units.
- Provides a case-isolated output for compatible machinery-monitor inputs.
- Allows the mounting adapter to be selected separately for the machine interface.
- Supports shielded two-conductor interconnect cables for monitor connection.
Applications
- Machinery casing vibration
- Bearing-housing monitoring
- Maintenance replacement where an existing adapter is retained
Lifecycle
- Store the separately selected adapter identity with 330500-00-00.
- Trend bias and signal baseline for cable and sensor diagnostics.
- Inspect the retained adapter for thread damage or looseness before reuse.
FAQ
Does 330500-00-00 include a mounting adapter?
No. The first 00 explicitly specifies no adapter, so the existing adapter or a separately selected compatible part must be verified.
Can the old adapter always be reused with 330500-00-00?
Only after checking its thread, seating surface, corrosion and fit; a damaged adapter can compromise both retention and vibration response.
Can 330500-00-00 be installed on a 1/4-18 NPT point?
For new 1/4-18 NPT installations the manufacturer directs selection to the 330525 family, so the mounting and cable architecture must be reviewed.
Which cable information is needed for 330500-00-00?
Provide cable part, length, armor requirement, connector condition and monitor termination so the existing loop can be matched.
What acceptance checks follow a 330500-00-00 replacement?
Confirm mechanical seating, sensor orientation, bias voltage, signal polarity, 100 mV/in/s scaling and a credible machine baseline.
