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200350 and 200355 Accelerometers
Datasheet
Bently Nevada Machinery Condition Monitoring
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. Each
transducer’s top mounted, 2-pin connector (MIL-C-
5015) allows for easy installation and removal of the
interconnecting signal cable. A ¼-28 threaded hole on
the bottom of the casing accommodates multiple
mounting options.
The 200350 and 200355 Accelerometers contain a
piezoelectric sensing device, which generates charge
when subjected to vibration. This charge is then
converted electronically to a differential voltage signal,
which is proportional to the acceleration that is parallel
to the sensitive axis of the transducer.
164804 Rev. N
If housing measurements are being made for overall
protection of the machine, consider the usefulness of
the measurement for each application. Most common
machine malfunctions (imbalance, misalignment, etc.)
originate at the rotor and cause an increase (or at least
a change) in rotor vibration. For housing
measurements alone to be effective for overall
machine protection, a significant amount of rotor
vibration must be faithfully transmitted to the bearing
housing or machine casing, or more specifically, to the
mounting location of the transducer.
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200350 and 200355 Accelerometers
Datasheet 164804 Rev. N
In addition, exercise care in the physical
installation of the transducer. Improper
installation can result in a degradation of
the transducer’s performance and/or the
generation of signals that do not represent
actual machine vibration.
Upon request, we can provide engineering
services to determine the suitability of
housing measurements for the machine in
question and/or to provide installation.
Specifications
Parameters are specified from +20 to +30 °C
(+68 to +86 °F) and 100 Hz unless otherwise
indicated.
CAUTION
Operation outside the
specified limits will result in
false readings or loss of
machine monitoring.
Sensitivity
Amplitude Linearity ± 1%
Mounted Resonant
Frequency
Broadband Electrical
Noise
(1-10kHz)
Output Bias Voltage 8 to 12 VDC
Excitation Voltage 18 to 28 VDC
Constant Current
Excitation
Settling Time (within
1% of bias)
Output Impedance < 150 ohms < 100 ohms
Discharge Time
Constant
Electrical Isolation
(Case)
1500 kcpm
(25 kHz)
350 µg
(3,434 µm/s2)
2 to 20 mA
≤ 2.0 sec ≤ 5.0 sec
≥ 0.3 sec ≥ 0.8 sec
> 108 ohms
1250 kcpm
(20.8 kHz)
50 µg
(491 µm/s2)
Environmental
Operating
Temperature Range
Shock Survivability 5,000 g pk
Relative Humidity
Enclosure Rating IP68
-65°F to +250 ºF
(-54°C to +121 ºC)
100% relative, condensing,
non-submerged
Do not use sensor p/n 200350 for negative
excitation voltage (-Vex).
Electrical
200350 200355
Sensitivity 100 mV/g
±20%
(10.2
mV/m/s^2
±20%)
Frequency Range
(±3 dB)
Measurement Range ± 50 g
Transverse
30-600,000
cpm
(0.5-10,000
Hz)
≤ 7% ≤ 5%
100 mV/g ±5%
(10.2
mV/m/s^2
±5%)
12-600,000
cpm
(0.2-10,000
Hz)
Physical
200350 200355
Hex Size 11/16”
(18 mm)
Height 1.65”
(42.4
mm)
Weight 1.8 oz
(51
grams)
Mounting Thread 1/4-28 Female
Mounting Torque
(Maximum)
Sensing Element Ceramic
Sensing Geometry Shear
2 to 5 ft-lb
(2.7 to 6.8 N-m)
7/8”
(22mm)
2.06”
(52.3 mm)
3.3 oz
(94
grams)
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200350 and 200355 Accelerometers
Datasheet 164804 Rev. N
Housing Material Stainless Steel
Sealing Welded Hermetic
Electrical Connector 2-Pin Mil-C-5015
Electrical Connection
Position
Top
Compliance and
Certifications
FCC
This device complies with part 15 of the
FCC Rules. Operation is subject to the
following two conditions:
l This device may not cause harmful
interference.
l This device must accept any
interference received, including
interference that may cause
undesired operation.
EMC
EMC Directive 2014/30/EU
RoHS
RoHS Directive 2011/65/EU
Maritime
330400and 330425 only
ABS 2009 Steel Vessels Rules
1-1-4/7.7,4-8-3/1.11.1,4-9-7/13
Hazardous Area
Approvals
For the detailed listing of country and product
specific approvals, refer to the Approvals Quick
Reference Guide (108M1756) available from
Bently.com.
CSA/NRTL/C
Ex nL IIC T4:
AEx nA IIC T4:
Class I, Div 2, Groups A, B, C, D.
Ex ia IIC T4:
177230
200150,
200155,
200157
200350 (Approval Option 1)
Intrinsically
Safe
Intrinsically
Safe and
NonIncendive
AEx ia IIC T4:
Class I, Div 1, Groups A, B, C, D;
Class II, Div 1, Groups E, F, G;
Class III, Div 1
Install per drawing 177234
T4 @ Ta ≤ 80°C
Ex ia IIC T4
Class I, Div 1
Groups A,B,C,D
T4 @ -40°C ≤ Ta ≤ 80°C
Per DWG 167535
Ex nL IIC T4
Class I, Div 2
Groups A,B,C,D
T4 @ -40°C ≤ Ta ≤ 80°C
Per DWG 167535
Ex ia IIC T4
Class I, Division 1, Groups A, B, C and D
AEx ia IIC T4
Class I, Division 1, Groups A, B, C and D
T4 @ -54 °C ≤ Ta ≤ +121 °C
(-65.2 °F ≤ Ta ≤ 249.8 °F )
Per drawing 175825
Ex nL IIC T4
Class I, Division 2, Groups A, B, C and D
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 17582
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200350 and 200355 Accelerometers
Datasheet 164804 Rev. N
Ci=16.2 nF
ATEX/IECEx
II 1 G
Ex ia IIC T4 Ga
Hazardous Area
Li= 0
177230
Entity Parameters
200150, 200155,
200157
Entity Parameters
II 3 G
Ex na IIC T4 Gc
T4@ Ta = -40°C to 80°C
Zone 0/1 Zone 2
Ui= 28V Ui= 28V
Ii= 120mA Ii= 120mA
Pi= 1W Pi= 1W
Ci=0
Li=121.06µh
II 1 G
Ex ia IIC T4 Ga
II 3 G
Ex na IIC T4 Gc
T4@ Ta = -40°C to 80°C
Zone 0/1 Zone 2
Ui= 27V Ui= 27V
Ii= 150mA Ii= 150mA
Ci=16.2 nF
Conditions of Safe
Use
ATEX/IECEx
Zone 0/1:
Equipment must be connected to equipment,
which meets the above listed entity
parameters.
The cables type A or B (in compliance with EN
60079-25) must respect the cable parameters
listed with the entity parameters.
Zone 2 :
The supply electrical parameters shall not
exceed the values mentioned in the tables
above.
200350
Entity Parameters
Li= 0
II 1 G
Ex ia IIC T4 Ga
II 3 G
Ex na IIC T4 Gc
T4@ Ta = -54°C to +121°C
Zone 0/1 Zone 2
Ui= 28V Ui= 28V
Ii= 200mA Ii= 200mA
Pi= 1W Pi= 1W
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200350 and 200355 Accelerometers
Datasheet 164804 Rev. N
Accessories
Ordering Information
For the detailed listing of country and product
specific approvals, refer to the Approvals Quick
Reference Guide (108M1756) available from
Bently.com.
200350 Accelerometer
200350 – AA - BB - CC
A: Mounting Stud
00 ¼-28 SS w/ Brass tip, 0.5”
01 ¼-28 to M6 x 1.00 Stainless Steel
02 ¼-28 to M8 x 1.25 Stainless Steel
09 No mounting stud
10 1/4 -28 Adhesive Stud Mount
11 M6x1 Adhesive Stud Mount
12 M8x1.25 Adhesive Stud Mount
13 Magnetic Base Kit
B: Tolerance
00 100 mV/g ± 20% (10.2 mV/m/s^2 ±20%)
C: Approvals
00 No Approvals
01 CSA, ATEX, IECEx
200355 Accelerometer
168303
162411 Trendmaster Pro System User Guide
149831 Trendmaster DSM Datasheet
149823 Trendmaster DSM User Guide
200350 and 200355 Accelerometer User
Guide
Mounting Studs
Dimensional diagrams of all available
mounting studs are shown in Graphs and
Figures
164373 ¼-28 Mounting Stud
164372 M6x1 Mounting Stud
167559 M8X1.25 Mounting Stud
Adhesive Mounting Kits
Adhesive studs are sold in kits containing two
threaded studs and two mounting pads. Also
in the kit is a packet of acrylic adhesive and
materials to mix its two components. A
scouring pad and alcohol wipe are provided for
preparing the mounting surface.
Temperature Range
Cure Time 24 hours
-67°F to +250 ºF
(-55°C to 121 ºC)
200355 – AA – BB - CC
A: Mounting Stud
00 ¼-28 SS w/ Brass tip, 0.5”
01 ¼-28 to M6 x 1.00 BeCu
02 ¼-28 to M8 x 1.25 BeCu
09 No mounting stud
10 1/4 - 28 Adhesive Stud Mount
11 M6x1 Adhesive Stud Mount
12 M8x1.25 Adhesive Stud Mount
13 Magnetic Base Kit
B: Tolerance
00 100 mV/g ± 5% (10.2 mV/m/s^2 ±5%)
C: Approvals
00 No Approvals
Magnetic Base Kit
The magnetic base has a pull of 35 lbf and it is
suitable for placement on both curved surfaces
and flat surfaces. The magnet comes supplied
with a ¼-28 mounting stud. A dimensional
diagram of the magnetic base is shown in
Graphs and Figures
286244 Magnetic Base w/ Mounting Stud
Cables
The Splash proof cable is not recommended for
the model 200350 accelerometer.
The standard cables are 22 AWG 2-conductor
twisted shielded pairs with 2-socket moistureresistant female connector at one end,
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200350 and 200355 Accelerometers
Datasheet 164804 Rev. N
terminal lugs at the other end. Cable length is
84661 – AA
optional and comes in increments of 1 ft
between the stated maximum and minimum
lengths.
Splash Proof Cable
CB2W100 – AAA
A: Length
015 15 ft.
032 32 ft.
064 64 ft.
112 112 ft.
125 125 ft.
150 150 ft.
200 200 ft.
250 250 ft.
Standard Cable, No Armor
9571 – AA
A: Length
02 Minimum length, 2 ft.
99 Maximum length, 99 ft.
XX Desired length in ft.
The following are standard lengths
Feet Meters (approx.)
6 1.8
8 2.4
10 3.0
12 3.6
15 4.5
17 5.0
20 6.0
25 7.6
30 9.0
33 10.0
50 15.2
99 30.0
A: Length
03 Minimum length, 3 ft.
99 Maximum length, 99 ft.
XX Desired length in ft.
The following are standard lengths
Feet Meters (approx.)
6 1.8
8 2.4
10 3.0
12 3.6
15 4.5
17 5.0
20 6.0
25 7.6
30 9.0
33 10.0
50 15.2
99 30.0
Non-standard/custom lengths can also be
ordered at additional cost
Non-standard/custom lengths can also be
ordered at additional cost
Standard Cable, Armored
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200350 and 200355 Accelerometers
Datasheet 164804 Rev. N
Graphs and Figures
Figure 1: 200350 Accelerometer Dimensional Drawing
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200350 and 200355 Accelerometers
Datasheet 164804 Rev. N
Figure 2: 200355 Accelerometer Dimensional Drawing
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200350 and 200355 Accelerometers
Datasheet 164804 Rev. N
Figure 3: 200350 Accelerometer Frequency Response
Figure 4: 200350 Accelerometer Phase
Figure 5: 200355 Accelerometer Frequency Response
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200350 and 200355 Accelerometers
Datasheet 164804 Rev. N
Figure 6: 200355 Accelerometer Phase
Figure 7: Temperature Sensitivity Curve
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200350 and 200355 Accelerometers
Datasheet 164804 Rev. N
¼-28 Stud
M6x1 Stud
M8x1.25 Stud
Figure 8: Mounting Stud Dimensional Drawings
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200350 and 200355 Accelerometers
Datasheet 164804 Rev. N
Figure 9: Magnetic Base Dimensional Drawing
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200350 and 200355 Accelerometers
Datasheet 164804 Rev. N
Copyright 2020 Baker Hughes Company. All rights reserved.
Bently Nevada and Orbit Logo 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
not make 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 the
information, whether a claim is asserted in contract, tort, or otherwise. Baker Hughes reserves the right to make
changes 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 BakerHughes and its affiliates; and is subject to
change 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 be
covered 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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