Bently Nevada 330750-80-05 High-Temperature Velomitor System
A high-temperature casing-velocity transducer with an eight-metre integral hardline connection.
Product Profile
330750-80-05 is an eight-metre Bently Nevada High Temperature Velomitor System with multiple approvals. Its sensor head and signal-conditioning electronics are separated by a permanent integral cable so the sensing point can operate in a much hotter zone.
Current G-prefix serial-number versions support mounted surface temperatures up to +400°C; earlier versions are limited to +300°C, so the supplied serial identity matters.
Technical Data
| Manufacturer | Bently Nevada, a Baker Hughes business |
|---|---|
| Complete Part Number | 330750-80-05 |
| Product Family | 330750 High Temperature Velomitor |
| Integral Cable Length | 8 m |
| Agency Approval | Multiple approvals: CSA, ATEX and IECEx |
| Sensitivity | 5.7 mV/mm/s (145 mV/in/s), ±5% |
| Frequency Response | 20 to 1000 Hz, ±0.9 dB |
| Extended Frequency Band | 15 to 2000 Hz, ±3.0 dB |
| Sensing-Head Temperature | −55°C to +400°C for current G-prefix versions |
| Electronics Temperature | −55°C to +121°C |
| Housing | 300-series stainless steel |
| Electrical Connector | Hermetically sealed 2-pin Mil-C-5015 receptacle |
System Role
- Measures absolute bearing-housing or casing vibration velocity in high-temperature locations.
- Keeps sensitive electronics in a cooler area while the sensor head remains at the hot machine surface.
- Feeds compatible monitoring equipment through the correctly selected interconnection cable and scaling.
Compatibility
- Check the serial-number prefix before applying the +400°C limit.
- Maintain at least the documented integral-cable bend radius and avoid mechanical strain at both ends.
- Confirm monitor input polarity, sensitivity, grounding and downstream cable length for the existing channel.
Applications
- Gas and steam turbine casings, exhaust frames and hot bearing structures.
- High-temperature compressors, pumps or process machinery with usable casing-vibration transmission.
- Replacement of an installed 330750 point whose eight-metre routing and approval execution are documented.
FAQ
Does every 330750-80-05 support a +400°C sensing surface?
No. Current versions with a G-prefix serial number support that limit; earlier versions are limited to +300°C.
Can the integral cable on 330750-80-05 be shortened or replaced in the field?
No field alteration should be assumed; the sensor head, cable and electronics form a permanently connected system.
What vibration variable does 330750-80-05 provide?
It produces a velocity-proportional signal for absolute casing or bearing-housing vibration.
Where should the electronics section of 330750-80-05 be mounted?
Place it in a cooler location within its −55°C to +121°C limit while respecting the eight-metre integral cable and bend radius.
What installation error most affects 330750-80-05?
A flexible, dirty or uneven mounting surface can attenuate response or generate misleading signals; rigid preparation is essential.
What details should be sent for a 330750-80-05 enquiry?
Provide the full part number, serial prefix, hot-zone temperature, mounting photographs, receiving monitor and downstream cable information.
Recommended Models
| DT3020 | TG-540-1-2-10 | CAMC-G-S1 |
| PXC52 | S000760K04 | WTS 200 WTS 241 |
| ABB TU516 1SAP212000R0001 | 2AD 100C-B050A2-AS03-B2N2 | 4EP3700-2US00 |
| STD-420E 6584-500 | PCON-C-42PI-NP-2-0 | SGDH-30DE-OY |
| 6FM8090-0AS01 | Legrand 163 12 NH100 | A68RD3 |
| LOG210 5005-0210 | LP-XP91D03-000C | Sick WT12L-2B530 |
| 17-72V4-71Y41401 | NT471 | Allen Bradley 1734-IE2C+OB4+IB8 |
| Mini8 | 041764 | 151212020 |
| RF37 DT80K4/BMG/TH | VABF-S4-1-R6C2-C-6 | WS8B4WB/U |
| 1SVR427071R0000 | Block HFV 510-400/25 | 6FL4301-3CA11 6FL43013CA11 |
