Bently Nevada 200350, 200355 Specifications
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.
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)
2/13
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
3/13
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
4/13
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