330525 Velomitor XA Piezo-velocity
SensorDatasheet

Bently Nevada Machinery Condition Monitoring141633 Rev. M

Description
The Velomitor XA (eXtended Application) Sensor is aruggedized version of Bently Nevada's 330500 Velomitor
Sensor. Its 316L stainless steel case and unique, weatherproof
connector and cable assembly permit mounting without ahousing. The Velomitor XA Sensor cable assembly is suitablefor use in moist environments, and the Velomitor XA Sensor
design meets the requirements of IP-65 and NEMA 4X dust
ratings when properly installed with a mating extension
cable.
If you are measuring a machine housing to determine
where to install transducers, consider what kinds ofdata you need to obtain. Most common machine
malfunctions (imbalance, misalignment, and so forth)originate at the rotor and cause a change in rotor
vibration. The location you select on the housing must
accurately conduct rotor vibration to the transducer.
Install the transducer carefully. If you don't, thetransducer may not accurately detect vibrations andcan transmit invalid data. Bently Nevada provides
engineering services to accurately measure machine
housings and to install transducers.

330525 Velomitor XA Piezo-velocity Sensor
Datasheet141633 Rev. M

Specifications
Parameters are specified from +20 to +30 °C(+68 to +86 °F) and 100 Hz unless otherwise
indicated.
Operating the unit outside thespecified limits may result in false
readings or loss of machinemonitoring.

Broadband
Noise Floor

Less than 0.004 mm/s (160µin/s)

GroundingCase isolated

Maximum
cable length

305 metres (1,000 feet) ofcable, BN part number
02173007 with no degradationof signal.

Environmental LimitsSensitivity

3.94mV/mm/s (100 mV/in/s)±5%.

Operating-55 °C to +121 °C (-67°F toTemperature +250°F)
Range

Frequency
Response

4.5 to 2,000 Hz (270 to 120,000cpm) ±3.0 dB,

Shock
Survivability

5000 g peak, maximum

6.0 to 1,000 Hz (360 to 60,000cpm) ±0.9 dB.

Relative
Humidity

To 100% non-submerged; caseis hermetically-sealed.

Temperature
Sensitivity-14% to +7.5% typical over theoperating temperature range.

Velocity
Range

1270 mm/s (50 in/s) peak.

Magnetic<51 min/s/gauss (50 gauss, 50Field60 Hz)
Susceptibility

Transverse
Sensitivity

Less than 5% of sensitivity.

Amplitude
Linearity±2% to 152 mm/s (6 in/s) peak.

ShockSurvivability

5000 g peak, maximum

MountedResonant
Frequency

Greater than 12 kHz.

Relative
Humidity

To 100% non-submerged; caseis hermetically-sealed.

Broadband
Noise Floor(4.5 Hz to 2kHz)

0.004 mm/s (160 min/s) rms,
nominal.

Operating-55 °C to +121 °C (-67°F to
Temperature +250°F)
Range

Magnetic<51 min/s/gauss (50 gauss, 50Field
60 Hz)
Susceptibility

Physical Description

PowerDC Voltage: -22 to -30 VDC
Requirements
Bias Current: 2.5 to 6.0 mA

Weight156 g (5.5 oz), typicalDiameter

28 mm (1.1 in)

Output Bias
Voltage-12 ± 3.0 VDC , Over
Temperature Referenced toPin A

Height73.1 mm (2.88 in)
316L stainless steel

Dynamic
OutputImpedanceLess than 2400 ΩCase
Material
Connector

2-pin Mil-C-26482 hermeticallysealed, 316L stainless steel shell.

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330525 Velomitor XA Piezo-velocity Sensor
Datasheet

Mounting
Torque45 N-m (33 ft-lb) maximum

Polarity

Pin A goes positive with respect
to pin B when the sensor casemotion is toward the connector.

Cable Bend
Radius1.5-in minimum bend radius.

141633 Rev. M

Operating the unit outside thespecified limits may result in false
readings or loss of machinemonitoring.
Before installing and using this product, readthe 330500, 330525, and 330530 Velomitor
Sensors User Guide (document 100076).

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330525 Velomitor XA Piezo-velocity Sensor
Datasheet141633 Rev. M

Class I, Div 1, Groups A, B, C, D;
Class II, Groups E, F, G
Class III

Compliance andCertifications

Install per drawing 167536

FCCT4 @ -40 °C ≤ Ta ≤ +100 °C(-40 °F ≤ Ta ≤ +212 °F)

This device complies with part 15 of theFCC Rules. Operation is subject to thefollowing two conditions:ll

Intrinsically Ex nL IIC T4
Class I, Division 2, Groups A, B, C
Safe andand D
NonIncendive
AEx nA T4
Class I, Division 2, Groups A, B, Cand D

This device may not cause harmfulinterference.
This device must accept any
interference received, includinginterference that may cause
undesired operation.

Install per drawing 167536
T4 @ -40 °C ≤ Ta ≤ +100 °C(-40 °F ≤ Ta ≤ +212 °F)

EMC
EMC Directive 2014/30/EU

330400,330425

RoHS
RoHS Directive 2011/65/EU

Maritime

Ex ia IIC T4
AEx ia IIC T4
Class I, Div 1 Groups A, B, C and D
Class II, Groups E, F, and G
Class III
T4 @ -40°C ≤ Ta ≤ 100°C
Install per dwg 167538

330400 and 330425 only

330500ABS 2009 Steel Vessels Rules
1-1-4/7.7,4-8-3/1.11.1,4-9-7/13

Hazardous Area Approvals

Ex ia IIC T4
AEx ia IIC T4
Class I, Division 1, Groups A, B, C
and D Class II, Groups E, F, G
Class III
Install per dwg 167537
T4 @ -40°C ≤ Ta ≤ 100°C

For the detailed listing of country andproduct specific approvals, refer to theApprovals Quick Reference Guide(108M1756) available from Bently.com.

Ex nL IIC T4
AEx nA IIC T4
Class I, Div 2, Groups A, B, C, D

CSA/NRTL/C

Install per dwg 167537
T4 @ -40°C ≤ Ta ≤ 100°C

190501 (Agency Approval Options 01
through 04)

330525Intrinsically Ex ia IIC T4:
Class I, Div 1, Groups A, B, C, D.
Safe
Class II, Group E, F and G
Class IIIAEx ia IIC T4:

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Ex ia IIC T4
AEx ia IIC T4
Class I, Division 1, Groups A, B, C
and D Class II, Groups E, F, G
Class III

330525 Velomitor XA Piezo-velocity Sensor
Datasheet141633 Rev. M

T4 @ -40°C ≤ Ta ≤ 100°C

Pi= 0.84W

Ex nL IIC T4AEx nA IIC T4
Class I, Div 2, Groups A, B, C, D

Ci-10.8nF
Li= 0Install per dwg 167539
T4 @ -40°C ≤ Ta ≤ 100°C

ATEX/IECEx
190501, 330400, 330425, 330500, 330525
190501

II 1 GEx ia IIC T4 Ga
II 3 D
Ex na IIC T4 Gc
Ex tc III T130°C Dc
T4@ Ta = -55°C to 121°C

EntityParameters

Zone 0/1

Zone 2

Ui= 30V

Ui= 30V

Ii= 200mA

Ii= 200mA

Pi= 0.75W

Pi= 1.14W

Ci-27.2nF
Li= 0330400, 330425,330500, 330525

II 1 GEx ia IIC T4 Ga
II 3 D
Ex na IIC T4 Gc
Ex tc III T130°C Dc
T4@ Ta = -55°C to 121°C

EntityParameters

Zone 0/1

Zone 2

Ui= 28V

Ui= 28V

Ii= 150mA

Ii= 150mA

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Pi= 1.26W

330525 Velomitor XA Piezo-velocity Sensor
Datasheet141633 Rev. M

Hazardous Area Conditions ofSafe Use
ATEX/IECEx
Zone 0/1:
Equipment must be connected to equipment,
which meets the abovelisted entity parameters.
The cables type A or B (in compliance with EN60079-25) must respect the cable parameterslisted with the entity parameters.
Zone 2 :The supply electrical parameters shall not
exceed the values mentioned in the tables
above.

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330525 Velomitor XA Piezo-velocity Sensor
Datasheet141633 Rev. M

Accessories

Ordering Information
For the detailed listing of country andproduct specific approvals, refer to theApprovals Quick Reference Guide(108M1756) available from Bently.com.

100076330500/330525 Velomitor
Sensor and Velomitor XA
SensorUser Guide

02173007

Bulk cable; two-conductor
twisted, shielded. 22 AWG cablewithout connectors or terminallugs. Specify length in feet.

103537-01

Terminal Mounting Block.
Provides simple field wiring
connection and can bemounted inside any standard
Proximitor Sensor housing. One
terminal mounting block isneeded for each Velomitor XA
Sensor connection.

03839144

Splash-resistant boot cover forinterconnect cable assembly.
The boot is made fromfluorosilicone elastomer. Boot
color is blue.

03839142

Bottom clamp used to secure
the boot to the Velomitor XA
Sensor case.

03839143

Top clamp used to secure theboot to the interconnect cable
assembly.

330525-AA
A: Agency Approval Option
00

None Required

01

CSA/NRTL/C

02

SIRA/CENELEC

106765-AA Interconnect Cable
A: Length (in meters)
Minimumlength1 meter(3.3 feet)

Maximumlength25 meters (82 feet)

Order in increments of 3 meters.

Terminal Housing
Terminal Housing for terminating Velomitor XA
Sensor cable to bulk cable listed above. TheTerminal Housing provides local connection of
the Velomitor XA Sensor signal wires to themonitor field wiring. Each Terminal Housing
can accommodate up to 2 Velomitor XASensor Cables.

106769-AA
A: Conduit Fitting Option
00

No fittings supplied01

One ¾ NPT fitting02

Two ¾ NPT fittings

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330525 Velomitor XA Piezo-velocity Sensor
Datasheet141633 Rev. M

Graphs and Figures

1. Splash-resistant boot with clamps 5. “A” (white)
2. Stainless steel armor over cable

6. “B” (black)

3. 0.382 mm2 (22 AWG)

7. “SHLD” (green)

4. Clear shrink tubing

8. Overall length ± 200 (7.8)

Figure 1: Dimensions for 106765 Cable
Dimensions are in millimeters (inches)

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330525 Velomitor XA Piezo-velocity Sensor
Datasheet141633 Rev. M

1. MIL-C-26482 receptacle
2. 25.4 (100) hexagonal
3. 1/4-18 NPT
Figure 2: Dimensions for 330525 Velomitor XA Piezo-Sensor
Dimensions are in millimeters (inches)

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330525 Velomitor XA Piezo-velocity Sensor
Datasheet141633 Rev. MCopyright 2020 Baker Hughes Company. All rights reserved.

Bently Nevada, Orbit Logo, Velomitor, Proximitor and System 1 are registered trademarks of Bently Nevada, a Baker
Hughes Business, in the United States and other countries. The Baker Hughes logo is a trademark of Baker Hughes
Company. All other product and company names are trademarks of their respective holders. Use of the trademarks
does not imply any affiliation with or endorsement by the respective holders.
Baker Hughes provides this information on an “as is” basis for general information purposes. Baker Hughes does notmake any representation as to the accuracy or completeness of the information and makes no warranties of any
kind, specific, implied or oral, to the fullest extent permissible by law, including those of merchantability and fitness
for a particular purpose or use. Baker Hughes hereby disclaims any and all liability for any direct, indirect,consequential or special damages, claims for lost profits, or third party claims arising from the use of theinformation, whether a claim is asserted in contract, tort, or otherwise. Baker Hughes reserves the right to makechanges in specifications and features shown herein, or discontinue the product described at any time without
notice or obligation. Contact your Baker Hughes representative for the most current information.
The information contained in this document is the property of Baker Hughes and its affiliates; and is subject tochange without prior notice. It is being supplied as a service to our customers and may not be altered or its content
repackaged without the express written consent of Baker Hughes. This product or associated products may becovered by one or more patents. See Bently.com/legal.

1631 Bently Parkway South, Minden, Nevada USA 89423
Phone: 1.775.782.3611 or 1.800.227.5514 (US only)
Bently.com

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