Bently Nevada 20015x Specifications

200150, 200155 and 200157
Accelerometers

Datasheet

Bently Nevada Machinery Condition Monitoring

Description

The 20015x Accelerometers are general purpose, wide
frequency, case-mounted seismic transducers designed for
use with Trendmaster ProTIMs.

The 200150 Accelerometer also operates with the
Trendmaster 2000 system. The accelerometer interfaces with
the 200100 Dual Acceleration to Velocity flexiTIM Module and
the 89130-01 Acceleration-to-Velocity TIM (Transducer
Interface Module), as well as the 1900/25 and 1900/27
monitors.

The 20015x Accelerometers feature a hermetically sealed,
stainless steel case. This design provides an extremely
rugged transducer that is well suited for harsh industrial
environments. The transducer’s top-mounted, 5-pin
connector allows you to easily install and remove the
interconnecting signal cable. A 3/8-24 threaded hole on the
bottom of the sensor’s casing accommodates several
mounting options.

The 20015x Accelerometers contain a piezoelectric sensing
device that generates a charge when it is subjected to
vibration. The accelerometers electronically convert this
charge to a differential voltage signal that is proportional to
the acceleration that is parallel to the sensitive axis of the
transducer.

164986 Rev. V

If you use the 200155 and 200157 Accelerometers with
1900 monitors or with TIMs other than those listed in
Table 1, or if you operate the transducers outside their
specified limits, machine monitoring may fail or the
data obtained may not be accurate.

The maximum allowed cable length for use with the
200155 is 15.24 m(50 ft.). You can install 20015x
accelerometers in a Class I, Zone 0 application without
a barrier, if you use them with the wSIM.

200150, 200155 and 200157 Accelerometers
Datasheet 164986 Rev. V

Table 1: 20015x Accelerometer Applications

If you are measuring a machine
housing to determine where to install

Accelerometer

Used with

ProTIM Option

200150 Standard

Acceleration­to-Velocity
channel type (-

01)

200155 Low Frequency

Acceleration­to-Velocity
channel type (-

05)

Type of

Application

General
application

Fin-Fan,
slow
rotating
shafts

transducers, consider what kinds of
data 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, the transducer may not
accurately detect vibrations and can
transmit invalid data. Bently Nevada
provides engineering services to

200157 Standard

Acceleration­to-Velocity with
Acceleration
Enveloping
channel type (-

06)

Roller
element
bearing
and certain
types of
cavitation
effects

accurately measure machine housings
and to install transducers.

Note that the acceleration-to-velocity circuitry
in the 200200 and 200250 ProTIMs attenuates
frequencies above 1 kHz . You cannot obtain
higher frequency data with the 200155 or

200157.

The wider frequency range of the 200155 and
200157 accelerometers may result in increased
noise compared to the 200150. We recommend
that you use the 200155 transducer for
frequencies of interest below 10 Hz. Use the
200157 only if the application requires
acceleration enveloping. Use of the 200155 or
the 200157 in place of the 200150 may result in
faulty readings. Refer to the ProTIM datasheet
for the proper frequency response of the
system.



2/23

200150, 200155 and 200157 Accelerometers
Datasheet 164986 Rev. V

200157 ≤300

Specifications

All specifications are at +25°C (+77°F), unless
otherwise specified.

Electrical

Sensitivity @
80 Hz (± 12%)

Measurement Range

Accelerometer Measurement Range in

200150 ±245 (±25)

200155 ±196 (±20)

200157 ±245 (±25)



Frequency Range Referenced to 80Hz
(±10%)

Accelerometer Frequency Range in Hz

200150 10 to 1000 (600 to 60,000)

200155 1.5 to 10,000 (90 to 600,000)

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

m/s2 (g)

(cpm)

(1)

Because of its long settling time, you
can use the 200155 only with low
frequency acceleration-to-velocity
channel types on a ProTIM, DSM, or
System 1 system.

Excitation
Voltage

Polarity
(Acceleration
from Base to
Connector)

Quiescent
Current

Output Bias
Voltage

Broadband Electrical Noise (1 Hz to 15 kHz)

Accelerometer Measurement Range in

200150 14.7 (1.5)

200155 24.5 (2.5)

200157 14.7 (1.5)

4.7 to 5.5 Vdc

SIG+ positive with respect to
SIG-.

<800 µA

+2.5 ± 0.23 Vdc

mm/s2 (mg)

200157 10 to 10,000 (600 to 600,000)


Mounted

Resonant
Frequency

Amplitude
Linearity
(1 to 10g pk)

Transverse
Sensitivity

Settling Time (Within 5% of Bias)

Accelerometer Settling Time (ms)

200150 ≤300

200155

(1)

>20 kHz (>1200 kcpm)

±2%

≤7%

≤2000


Electrical

Isolation



600 Vrms

Environmental

Axial Shock
Limit

Temperature
Range

Sealing
(Hermetic)

Relative
Humidity

49,050 m/s2 pk (5,000 g pk)

-40 ºC to +105 ºC (-40 ºF to +221
ºF)

5X10-8 atm•cc/s (3.1X10-9
atm•in3/s), maximum

100% relative, condensing,
non-submerged

3/23

200150, 200155 and 200157 Accelerometers
Datasheet 164986 Rev. V

Physical

Size (Hex x
Height)

Weight 58 g (2.0 oz), typical

Mounting
Thread

Mounting
Torque

Sensing
Element

Sensing
Geometry

Housing and connector material

200150 316L stainless steel

200155 316L stainless steel

200157 316L stainless steel


Electrical

Connector
(Top)



17.5 mm x 45.7 mm (11/16 in x 1.8
in)

3/8-24 female

2.7 to 6.8 N•m (2 to 5 ft•lbf)

Ceramic

Shear

5-pin 1/2-20

Cables

Operating
Temperature
Range

Construction 4-conductor, 22 AWG with

Seal Connectors provide an IP67

Minimum Bend Radius

200151 63.5 mm (2.5 in)

-20 ºC to +100 ºC (-4 ºF to +212
ºF)

These cables may be used at
lower temperatures if the
installation prevents the cable
from flexing or bending. Flexing
these cables at temperatures
below –20 ºC (-4 ºF) may
damage the cables.

braided shield and drain wire
(85% coverage, minimum),
PVC outer jacket. Nickel-plated
coupling nuts.

seal to transducers and
mating hardware. Connectors
are molded to the cable. The
addition of DC4 electrical
insulating compound in the
connectors provides
additional protection against
moisture during a thermal
shock.

200152 73.7 mm (2.9 in)

Maximum
Cable Length



25 m (82 ft)

Custom products may be able
to provide longer cable lengths
for the 200150 and 200157
accelerometers.

Adhesive (see Mounting Hardware
Options)

Temperature
Range

Cure Time 24 hours

4/23

-55 ºC to +121 ºC (-67 ºF to +250
ºF)

200150, 200155 and 200157 Accelerometers
Datasheet 164986 Rev. V

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

330400and 330425 only

ABS 2009 Steel Vessels Rules

1-1-4/7.7,4-8-3/1.11.1,4-9-7/13

5/23

200150, 200155 and 200157 Accelerometers
Datasheet 164986 Rev. V

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

177230 Ex nL IIC T4:

AEx nA IIC T4:
Class I, Div 2, Groups A, B, C, D.

Ex ia IIC T4:
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

200150,
200155,
200157

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

Safe and
Non­Incendive

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

200350 (Approval Option 1)

Intrinsically
Safe

Intrinsically

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

6/23

200150, 200155 and 200157 Accelerometers
Datasheet 164986 Rev. V

ATEX/IECEx

Ii= 200mA Ii= 200mA

177230







II 1 G

Ex ia IIC T4 Ga


II 3 G

Ex na IIC T4 Gc

Pi= 1W Pi= 1W

Ci=16.2 nF 

Li= 0 



Entity
Parameters

200150, 200155,
200157









Entity
Parameters

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

Hazardous Area 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

Ii= 150mA Ii= 150mA

Ci=16.2 nF 

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

7/23