Product Description
🔹 General Information
|
Manufacturer |
Bently Nevada |
|---|---|
|
Series |
– |
|
Model/Part Number |
330750-80-05 |
|
Model Type |
High Temperature Velomitor System |
🔹 Description
The 330750 High Temperature Velomitor System is designed to measure casing vibration in high-temperature environments, with the sensor head capable of direct mounting on surfaces up to +400°C (+752°F). It features a rugged design suitable for extreme industrial conditions, especially in turbines and rotating equipment applications.
🔹 Electrical Specifications
|
Parameter |
Specification |
|---|---|
|
Sensitivity |
5.7 mV/mm/s (145 mV/in/s) ±5% |
|
Frequency Response |
15–2000 Hz (±3.0 dB), 20–1000 Hz (±0.9 dB) |
|
Transient Temperature Sensitivity |
0.0762 mm/s/°C (0.003 in/s/°C), per ISO 5347-18:1993(E) |
|
Amplitude Range |
635 mm/s (25 in/s) peak < 680 Hz, 2940 m/s² (300 g) peak > 680 Hz |
|
Transverse Sensitivity |
< 5% of sensitivity |
|
Amplitude Linearity |
±2% to 152 mm/s (6 in/s) peak |
|
Mounted Resonant Frequency |
> 5 kHz |
|
Output Bias Voltage |
-12 ±2.0 VDC |
|
Broadband Noise Floor (15Hz–2kHz) |
0.127 mm/s (0.005 in/s) rms nominal |
|
Grounding |
Case isolated |
|
Max Cable Length |
305 m (1000 ft) without signal degradation |
🔹 Environmental Limits
|
Component |
Temperature Range |
|---|---|
|
Sensing Head |
-55°C to +400°C (-67°F to +752°F) |
|
Integral Hardline Cable |
-55°C to +400°C (-67°F to +752°F) |
|
Electronics |
-55°C to +121°C (-67°F to +250°F) |
|
Shock Survivability |
24,535 m/s² (2500 g) peak |
|
Relative Humidity |
To 100%, non-submerged; case hermetically sealed |
🔹 Physical Specifications
|
Cable Length |
Weight (Typical) |
|---|---|
|
2 meters |
635 g (1.40 lb) |
|
4 meters |
794 g (1.75 lb) |
|
6 meters |
953 g (2.10 lb) |
|
8 meters |
1111 g (2.45 lb) |
🔹 Ordering Information
Model Number: 330750-AA-BB
|
Field |
Option |
Description |
|---|---|---|
|
AA |
80 |
8 meters (cable length for this model) |
|
BB |
05 |
Multiple Approvals (CSA, ATEX, IECEx) |
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