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200350 and 200355 Accelerometersmain-200350-accelerometers

 

The 200350 and 200355 Accelerometers are general purpose, casemounted seismic transducers designed for use with Trendmaster Pro Constant Current Direct Input Card 149811-02 and the Seismic Direct Input Card 164746-01. These transducers can also be used with a number of other Bently Nevada products, including 1900 Series, ADAPT.wind, 3500 Series, Snapshot IS and Snapshot CE. 

 

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. 

 

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Application Alert

Application Alert

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.

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.

 

Products

ProductsGeneral Overview & Capabilities

link-trendmaster-scanning

Trendmaster Pro

Trendmaster® Pro is its innovative architecture, which links hundreds of permanently mounted transducers and measurement points onto a single-cable sensor network.

link-1900-series-bently-nevada-monitoring-system

1900 Series

Self-contained monitors designed to address essential and balance-of-plant equipment assets that require continuous machinery protection.

link-adapt-wind-monitoring

ADAPT.wind

Operate your wind farm assets smarter with the ADAPT.wind solution.

link-3500-series-machinery-system

3500 Series

The 3500 System provides continuous, on-line monitoring suitable for machinery protection applications.

link-snapshotIS-data-collec

Snapshot IS

Snapshot IS provides intrinsically safe data collection / analysis in a convenient, palm-sized package weighing just 1.5 lbs.

link-snapshotCE-data-collecti

Snapshot CE

Snapshot for Windows* CE is our handheld portable data collection and analysis package for use with System 1® software.

Specifications

Application Alert

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

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

Electrical

 

English Units SI Units

Sensitivity

  200350 (±20%)

  200355 (±  5%)

10.2 mV/(m/s2) (100 mV/g) 10.2 mV/(m/s2) (100 mV/g)

Frequency Range   

  200350 (± 3dB)

  200355 (± 3dB)

 

30 to 600,000 cpm

12 to 600,000 cpm

 

0.5 to 10,000 Hz

0.2 to 10,000 Hz

Temperature Sensitivity See Graph See Graph
Measurement Range ± 50 g ± 490 m/s2

Transverse Sensitivity

  200350

  200355

 

= 7%

= 5%

 

= 7%

= 5%

Amplitude Linearity ± 1% ± 1%

Mounted Resonant Frequency

  200350

  200355

 

1500 kcpm

1250 kcpm

 

25 kHz

20.8 kHz

Broadband Electrical Noise (1-10kHz)

  200350

  200355

 

350 µg

50 µg

 

3434 µm/s2

491 µm/s2

Output Bias Voltage 8 to 12 VDC 8 to 12 VDC
Excitation Voltage 18 to 28 VDC 18 to 28 VDC
Constant Current Excitation 2 to 20 mA 2 to 20 mA

Settling Time (within 1% of bias)

  200350

  200355

 

= 2.0 sec

= 5.0 sec

 

= 2.0 sec

= 5.0 sec

Output Impedance

  200350

  200355

 

< 150 ohms

< 100 ohms

 

< 150 ohms

< 100 ohms

Discharge Time Constant

  200350

  200355

 

= 0.3 sec

= 0.8 sec

 

= 0.3 sec

= 0.8 sec

Electrical Isolation (Case)

 > 108 ohms

 > 108 ohms

Environmental

Operating Temperature Range -65 to +250 ºF -54 to +121 ºC
Shock Survivability 5,000 g pk 49,050 m/s2 pk
Relative Humidity

100% relative, condensing, non-submerged

Enclosure Rating IP68 IP68

Physical

Size (Hex x Height)

  200350

  200355

 

11/16 in * 1.65in

7/8in * 2.06in

 

18 mm * 42.2 mm

22mm * 52.3mm

Weight

  200350

  200355

 

1.8 oz

3.3 oz

 

51 gm

94 gm

Mounting Thread 1/4 - 28 Female 1/4 - 28 Female
Mounting Torque (Max) 2 to 5 ft*lb 2.7 to 6.8 N*m
Sensing Element Ceramic Ceramic
Sensing Geometry Shear Shear
Housing Material Stainless Steel Stainless Steel
Sealing Welded Hermetic Welded Hermetic
Electrical Connector 2-Pin Mil-C-5015 2-Pin Mil-C-5015
Electrical Connection Position Top Top

 

Hazardous Area Approvals

**Note: The 200355 does not have hazardous area approvals at this time.

200350

  North America:

  Ex ia / AEx ia IIC T4

  Class I, Div 1 Groups A, B, C & D

  When installed per dwg 175825

  T4 @ -54 °C = Ta = 121 °C

 

  Ex nL/AEx nA IIC T4

  Class I, Div 2 Groups A, B, C & D

  When installed per dwg 175825

  T4 @ -54 °C = Ta = 121 °C

  CSA 2007 1971585

 

ATEX:

  II 1 G

  Ex ia IIC T4

  LCIE 07 ATEX 6096 X

  T4 @ -54 °C = Ta = 121 °C

 

  II 3 G

  Ex nL IIC T4

  LCIE 07 ATEX 6097 X

  T4 @ -54 °C = Ta = 121 °C

 

Standards to which Conformity is Declared:

  CISPR 11 / EN 55011  Emissions: Class B, Group 1

  EN61326 / A1    Emissions: Industrial Location

  EN61326 / A1    Immunity: Industrial Location

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