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330530 Radiation Resistant Velomitor

Radiation Resistant Velomitor

GE's new Bently Nevada Radiation Resistant Velomitor® sensor is specifically designed for the harsh environments that exist at nuclear power plants. Built for longer life and better performance, this sensor brings valuable machine information to your plant's monitoring systems.

 

 

 

 

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Specifications

Parameters are specified from +20 °C to +30 °C (+68 °F to +86 °F) room temperature and 100 Hz unless otherwise indicated.

Note: Operation outside the specified limits may result in false readings or loss of machine monitoring.

Pre-Radiation Electrical

Sensitivity 3.94 mV/mm/s (100 mV/in/s) ± 5%
Output Bias Voltage, Ref: Pin B to Pin A -12.0 ± 1.0 V @ room temperature
-12.0 ± 3.45 V over temperature
Frequency Response 6.0 Hz to 2.5 kHz (360 cpm to 150 kcpm) ± 0.9 dB
4.5 Hz to 5.0 kHz (270 cpm to 300 kcpm) ± 3.0 dB
Temperature Sensitivity -11.0% to +10.5% typical over the operating temperature range
Velocity Range 635 mm/s (25 in/s) peak
Transverse Sensitivity Less than 5% of sensitivity
Amplitude Linearity ±2% to 152 mm/s (6 in/s) peak
Mounted Resonant Frequency Greater than 12 kHz
Broadband Noise Floor (4.5 Hz to 5 kHz) 0.008 mm/s (320 μin/s) rms, nominal
Maximum Cable Length 305 metres (1,000 feet) of cable, Part Number 175873, with no degradation of signal

Post-Radiation Electrical

Sensitivity 3.94 mV/mm/s (100 mV/in/s) ± 10%
Output Bias Voltage, Ref: Pin B to Pin A -12.0 ± 2.0 V @ room temperature
-12.0 ± 3.70 V over temperature
Frequency Response 6.0 Hz to 2.5 kHz (360 cpm to 150 kcpm) ± 1.0 dB
4.5 Hz to 5.0 kHz (270 cpm to 300 kcpm) ± 3.0 dB
Temperature Sensitivity -10.0% to +12.5% typical over the operating temperature range
Velocity Range 420 mm/s (16.5 in/s) peak
Transverse Sensitivity Less than 5% of sensitivity
Amplitude Linearity ±2% to 152 mm/s (6 in/s) peak
Mounted Resonant Frequency Greater than 12 kHz
Broadband Noise Floor (4.5 Hz to 5 kHz) 0.008 mm/s (320 μin/s) rms, nominal
Maximum Cable Length 305 metres (1,000 feet) of cable, BN Part Number 175873, with no degradation of signal

Environmental Limits

Operating Temperature Range -55 °C to +121 °C (-67 °F to +250 °F)
Shock Survivability 5,000 g peak, maximum
Relative Humidity To 100% non-submerged (case is hermetically sealed)
Base Strain Sensitivity 0.005 in/s/μstrain
Magnetic Field Sensitivity <51 μin/s/gauss (50 gauss, 50 - 60 Hz)
Radiation Dosage 3 Mrads, maximum guarantee
Note: The limits listed above are what Bently Nevada LLC guarantees. See the Summary Testing Report at the end of this document for more details.

Physical

Weight 142 grams (5.0 ounces), typical
Diameter 25.3 mm (0.995 in)
Height 63.5 mm (2.5 in)
Case Material 304L stainless steel
Connector 2-pin MIL-C-5015 hermetically sealed, 304 stainless steel
Mounting Torque 4.52 N-m (40 in-lbf) maximum
Polarity Pin A goes positive with respect to Pin B when the sensor case motion is towards the connector.

CE Mark Directives

EMC Directive IEC/EN61000-6-4 Radiated Emissions: EN 55011, Class A
Conducted Emissions: EN 55011, Class A
IEC/EN61000-6-2 Electrostatic Discharge: EN 61000-4-2, Criteria B
Radiated Susceptibility: EN 61000-4-3, Criteria A
Conducted Susceptibility: EN 61000-4-6, Criteria A
Electrical Fast Transient: EN 61000-4-4, Criteria B
Surge Capability: EN 61000-4-5, Criteria B
Magnetic Field: EN 61000-4-8, Criteria A
Low Voltage Directive EN 61010-1

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Descriptions English
330530 Radiation Resistant Velomitor Datasheet acrobat-reader
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