200350 and 200355 Accelerometers
Datasheet

Bently Nevada Machinery Condition Monitoring

164804 Rev. R

Description
The 200350 and 200355 Accelerometers are general
purpose, case-mounted seismic transducers designed
for use with Trendmaster Pro Constant Current Direct
Input Card, part number 149811-02 and the Seismic
Direct Input Card, part number 164746-01.
The 200350 and 200355 Accelerometers are contained
within a hermetically sealed, stainless steel case. The
design provides an extremely rugged transducer, well
suited for harsh industrial environments. Eachtransducer’s top mounted, 2-pin connector (MIL-C5015) allows for easy installation and removal of theinterconnecting signal cable. A ¼-28 threaded hole on
the bottom of the casing accommodates multiple
mounting options.
The 200350 and 200355 Accelerometers contain apiezoelectric sensing device, which generates charge
when subjected to vibration. This charge is thenconverted electronically to a differential voltage signal,
which is proportional to the acceleration that is parallelto the sensitive axis of the transducer.
Most common machine malfunctions (unbalance,misalignment, etc.) occur on the rotor andoriginate as an increase (or at least a change) inrotor vibration. For any individual casing
measurement to be effective for overall machine
protection, the system must continually transmit asignificant amount of rotor vibration to themachine casing, or mounting location of thetransducer.
In addition, be careful to install the accelerometer200350 and 200355 Accelerometers
Datasheet

164804 Rev. R

transducer on the bearing housing ormachine casing. Improper
installation may decrease thetransducer amplitude and frequency
response and/or generate false
signals that do not represent actual
vibration. Refer to the appropriate
instruction manuals and Application
Notes.

Measurement± 50 gRange

Upon request, Bently Nevada provides
engineering services that can identify
the appropriate machine housing
measurements and installation
assistance if needed.

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

Safety Caution
Operation outside the specified
limits will result in false readings
or loss of machine monitoring.

Do not use sensor part number
200350 for negative excitation voltage(-Vex).

Electrical

Sensitivity

Frequency
Range(±3 dB)200355

100 mV/g±20%(10.2mV/m/s^2±20%)

100 mV/g ±5%(10.2mV/m/s^2±5%)30-600,000
cpm (0.510,000 Hz)

12-600,000
cpm (0.210,000 Hz)≤ 7%

Amplitude
Linearity± 1%

MountedResonant
Frequency

1500 kcpm(25 kHz)

1250 kcpm(20.8 kHz)

350 µg50 µg(3,434 µm/s2)(491 µm/s2)

Broadband
ElectricalNoise(1-10kHz)Specifications

200350Transverse
Sensitivity≤ 5%

Output Bias
Voltage

8 to 12 VDC

Excitation
Voltage18 to 28 VDCConstant
Current
Excitation

2 to 20 mA

Settling Time(within 1% ofbias)≤ 2.0 sec

≤ 5.0 sec

OutputImpedance< 150 ohms

< 100 ohms

DischargeTimeConstant≥ 0.3 sec

≥ 0.8 sec

ElectricalIsolation(Case)> 108 ohms

Environmental

2/13

OperatingTemperature
Range-65°F to +250 ºF(-54°C to +121 ºC)

ShockSurvivability

5,000 g pk

Relative Humidity

100% relative, condensing,non-submerged

200350 and 200355 Accelerometers
Datasheet

Enclosure Rating

164804 Rev. R

IP68

Physical200350 200355
Hex Size

11/16”(18mm)

7/8”(22mm)Height1.65”(42.4mm)

2.06”(52.3mm)

Weight1.8 oz3.3 oz(51(94grams)grams)

Mounting Thread

1/4-28 Female

Mounting Torque(Maximum)

2 to 5 ft-lb(2.7 to 6.8 N-m)

Sensing Element

Ceramic

Sensing Geometry

Shear

Housing Material

Stainless Steel

Sealing

Welded Hermetic

Electrical Connector

2-Pin Mil-C-5015

Electrical Connection
PositionTop

Recommended cable
length (assuming max
vibration of 50g, frequency
10 kHz, and cable104 ft (31 m)
capacitance 200 pf/m.)
For longer lengths,
contact Bently Nevada
Tech Support.)

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200350 and 200355 Accelerometers
Datasheet

164804 Rev. R

Compliance andCertifications

17582

ATEX/IECEx

FCC

For 200350:

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

II 1 GEx ia IIC T4 Ga

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

II 3 GEx nA IIC T4 Gc
Ex ec IIC T4 Gc
T4@ Ta = -54°C to 121°C

EMC

Entity Parameters:

EMC Directive 2014/30/EU

RoHS
RoHS Directive 2011/65/EU

Hazardous Area Approvals

Ui= 28V

Ui= 28V

Ii= 200mAIi= 200mA

Pi= 1W

Pi= 1W

Li= 0

Hazardous Area Conditions ofSafe Use

CSA/NRTL/C

ATEX/IECEx

For 200350:

Zone 0/1:
Ex ia IIC T4
Class I, Division 1, Groups A, B, C, D

Equipment must be connected to equipment,
which meets the above listed entity
parameters.

AEx ia IIC T4
Class I, Division 1, Groups A, B, C
and D

The cables type A or B (in compliance with EN60079-25) must respect the cable parameterslisted with the entity parameters.

T4 @ -54 °C ≤ Ta ≤ +121 °C(-65.2 °F ≤ Ta ≤ 249.8 °F )Per drawing 175825
Intrinsically Safe
and NonIncendive

Zone 2

Ci=16.2 nF

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

Intrinsically Safe

Zone 0/1

Zone 2 :Ex nL IIC T4
Class I, Division 2, Groups A, B, C, D

The supply electrical parameters shall not
exceed the values mentioned in the tables
above.

AEx nA T4
Class I, Division 2, Groups A, B, C
and D
T4 @ -54 °C ≤ Ta ≤ +121 °C (-65.2 °F≤ Ta ≤ +249.8 °F ) per drawing

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200350 and 200355 Accelerometers
Datasheet

164804 Rev. R

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

09

No mounting stud10

1/4 - 28 Adhesive Stud Mount

11

M6x1 Adhesive Stud Mount

12

M8x1.25 Adhesive Stud Mount

13

Magnetic Base Kit

B: Tolerance

200350 Accelerometer00

200350 – AA - BB - CC

100 mV/g ± 5% (10.2 mV/m/s^2 ±5%)

C: Approvals

A: Mounting Stud00

00¼-28 SS w/ Brass tip, 0.5”01¼-28 to M6 x 1.00 Stainless Steel

Accessories

02¼-28 to M8 x 1.25 Stainless Steel

168303

200350 and 200355 Accelerometer
User Guide09

No mounting stud162411

Trendmaster Pro System User Guide10

1/4 -28 Adhesive Stud Mount

149831

Trendmaster DSM Datasheet

11

M6x1 Adhesive Stud Mount

149823 Trendmaster DSM User Guide

12

M8x1.25 Adhesive Stud Mount

13

Magnetic Base Kit

Mounting Studs
Dimensional diagrams of all available
mounting studs are shown in Graphs andFigures

B: Tolerance
00

No Approvals

100 mV/g ± 20% (10.2 mV/m/s^2±20%)164373¼-28 Mounting Stud

C: Approvals

164372

M6x1 Mounting Stud00

No Approvals

167559

M8X1.25 Mounting Stud01

CSA, ATEX, IECEx

Adhesive Mounting Kits

200355 Accelerometer

Adhesive studs are sold in kits containing two
threaded studs and two mounting pads. Alsoin the kit is a packet of acrylic adhesive andmaterials to mix its two components. A
scouring pad and alcohol wipe are provided for
preparing the mounting surface.

200355 – AA – BB - CC
A: Mounting Stud00¼-28 SS w/ Brass tip, 0.5”01¼-28 to M6 x 1.00 BeCu02¼-28 to M8 x 1.25 BeCu

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

Cure Time24 hours

200350 and 200355 Accelerometers
Datasheet

164804 Rev. R

Standard Cable, No Armor

Magnetic Base Kit
The magnetic base has a pull of 35 lbf and it issuitable for placement on both curved surfaces
and flat surfaces. The magnet comes suppliedwith a ¼-28 mounting stud. A dimensional
diagram of the magnetic base is shown inGraphs and Figures

9571 – AA
A: Length02

Minimum length, 2 ft.

99

Maximum length, 99ft.

CablesXX

Desired length in ft.

The Splash proof cable is not recommended forthe model 200350 accelerometer.

The following are standard lengths286244Magnetic Base w/ Mounting Stud

FeetMeters (approx.)

6

1.8

8

2.4

10

3.0

12

3.6

Splash Proof Cable

15

4.5

CB2W100 – AAA

17

5.0

20

6.0

25

7.6

30

9.0

33

10.0

50

15.2

99

30.0

The standard cables are 22 AWG 2-conductor
twisted shielded pairs with 2-socket moistureresistant female connector at one end,
terminal lugs at the other end. Cable length isoptional and comes in increments of 1 ft
between the stated maximum and minimumlengths.

A: Length015

15 ft.

032

32 ft.

064

64 ft.

112

112 ft.

125

125 ft.

150

150 ft.

200

200 ft.

250

250 ft.

Non-standard/custom lengths canalso be ordered at additional cost

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200350 and 200355 Accelerometers
Datasheet

164804 Rev. R

Standard Cable, Armored
84661 – AA
A: Length03

Minimum length, 3 ft.

99

Maximum length, 99ft.

XXDesired length in ft.

The following are standard lengths
FeetMeters (approx.)

6

1.8

8

2.4

10

3.0

12

3.6

15

4.5

17

5.0

206.025

7.6

30

9.0

33

10.0

50

15.2

99

30.0
Non-standard/custom lengths canalso be ordered at additional cost

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200350 and 200355 Accelerometers
Datasheet

164804 Rev. R

Graphs and Figures

Figure 1: 200350 Accelerometer Dimensional Drawing

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200350 and 200355 Accelerometers
Datasheet

164804 Rev. R

Figure 2: 200355 Accelerometer Dimensional Drawing

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200350 and 200355 Accelerometers
Datasheet

164804 Rev. R

Figure 3: 200350 Accelerometer Frequency Response

Figure 4: 200350 Accelerometer Phase

Figure 5: 200355 Accelerometer Frequency Response

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Datasheet

164804 Rev. R

Figure 6: 200355 Accelerometer Phase

Figure 7: Temperature Sensitivity Curve¼-28 Stud

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200350 and 200355 Accelerometers
Datasheet

164804 Rev. R

M6x1 StudM8x1.25 Stud

Figure 8: Mounting Stud Dimensional Drawings

Figure 9: Magnetic Base Dimensional Drawing

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200350 and 200355 Accelerometers
Datasheet

164804 Rev. R

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Bently Nevada, Trendmaster and Orbit Logo are registered trademarks of Bently Nevada, a Baker Hughes business, inthe United States and other countries. The Baker Hughes logo is a trademark of Baker Hughes Company. All otherproduct 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 (US) or Bently.com/support
Bently.com

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