TACH100 Standalone Digital Tachometer
Datasheet

Bently Nevada Machinery Condition Monitoring

176063 Rev. K

Description
The Bently Nevada TACH100_Digital_Tachometer can be used
as a stand-alone unit for speed indication or in conjunction
with any permanently installed monitoring system as aremote speed indicator. It is often used when a permanentmonitoring system is located some distance away (e.g. in acontrol room) or when no permanent monitoring system isinstalled and speed indication is required at the machine.
The digital tachometer is a compact unit, containing its own
power supply that can power a Proximitor sensor (-24 Vdc).
The tachometer also accepts signal and common wires froman externally-powered Keyphasor Proximity Probe (such asmay be available when a permanent monitoring system isinstalled). The wires can be connected in parallel with theKeyphasor input on the monitor rack or to the Keyphasor
probe itself.

TACH100 Standalone Digital Tachometer
Datasheet

176063 Rev. K

Specifications
Inputs

Altitude2000 mOperatingTemperature

0°C to +60°C (+32°F to+140°F)

Storage
Temperature-40°C to +85°C (-40°F to+185°F)
95% max, noncondensing

SignalFrom any Bently Nevada
Proximitor Sensor.

ThresholdAutomatic adjustment.

Relative
Humidity

Hysteresis

0.2 Vdc to 2.5Vdc, fieldadjustable.

Physical Size

Events Per
Turn

1 to 99, field-adjustable.

Height76.2 mm (3 in)Electrical
Supply110-230 Vac, 50-60 Hz. 1.5 Amp,
SB fuse. 1.01 Watts nominal
power consumption with
88888 displayed.

Width139.7 mm (5.5 in)

Depth

149.1 mm (5.8 in)

Weight1.13 kg (2.5 lb)

Outputs
Display Type6-digit LED, 7 segments perdigit. Digit height is 13.2 mm(0.52 in)Measurement
Range

1 to 999,999 rpm.

Measurement
Resolution

1 rpm

Measurement
Accuracy

Accurate to within 0.015% of
input speed displayed inRPM.

Display
Hysteresis

Input signal must change
by 0.003% minimum todisplay a new output value.

Proximitor
Power-24 Vdc at 20 mAmaximum.

Directives (CE and EMC)
CE Mark Directive
The TACH100_Digital_Tachometer has beentested and approved for installation within theEuropean Union and European Environmental
Agency regions. This device has been designedand tested to meet the following directives.

EMC Directives

Environmental Limits
For Indoor Use Only
Pollution
Degree2Installation
CategoryII

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Radiated
Emissions

EN5501, Group 1 Class A

Conducted
Emissions

EN5501, Group 1 Class A

EN61000-6-2
Electrostatic
Discharge

IEC 61000-4-2, Criteria B

Radiated
Susceptibility

IEC 61000-4-3, Criteria A

Electrical Fast
TransientIEC 61000-4-4, Criteria B

AC Power Surge
Susceptibility

IEC 61000-4-5, Criteria B

TACH100 Standalone Digital Tachometer
Datasheet

AC Power Flicker
Emissions

IEC 61000-3-3, Criteria A

RF Conducted
Susceptibility

IEC 61000-4-6, Criteria A

Voltage Interrupt
Susceptibility

IEC 61000-4-11, Criteria B

Voltage Dip
SusceptibilityIEC 61000-4-11, Criteria A

176063 Rev. K

EMC Standards
This product is tested to meet Council Directive
89/336/EEC Electromagnetic Compatibility(EMC) as last amended by EC Directive
93/68/EEC.
EN61000-6-4 Generic emission standard, Part 2,Industrial Environment. EN61000-6-2 EMC
Generic Immunity standard, Part 2, Industrial
Environment.

Certificate of Conformity
Registration Number: AE 72062927 0001

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TACH100 Standalone Digital Tachometer
Datasheet

176063 Rev. K

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

TACH100Standalone Digital Tachometer
Accessories
01701500 Fuse, 1.5 Amp, SB.
38138-01 Hood to block direct sunlight.
7072-01

Weatherproof housing with two 1/2in NPT fittings.

7072-02

Weatherproof housing with three
1/2-in NPT fittings and a 1/2-in to 1/4in NPT bushing.

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TACH100 Standalone Digital Tachometer
Datasheet

176063 Rev. K

Graphs and Figures

1. Keyphasor signal
2. Keyphasor sensor power
3. TACH100_Digital_Tachometer (set for single event perturn)
4. Keyphasor module
5. Tachometer (set for single event per turn)Figure 1: Connection for Single Event per Turn Keyphasor and Single Event per Turn Tachometer

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TACH100 Standalone Digital Tachometer
Datasheet

176063 Rev. K

1.
2.
3.
4.
5.
6.
7.
8.
9.

Multiple event per turn transducer signal
Transducer
Single event per turn Keyphasor signal
Transducer power
TACH100_Digital_Tachometer (set for multiple events perturn)
Keyphasor sensor
Keyphasor sensor power
Keyphasor module
Tachometer module (set for multiple events per turn)Figure 2: Connection for a Single Event per Turn Keyphasor and Multiple Events per Turn
Transducer Signal6/9

TACH100 Standalone Digital Tachometer
Datasheet

176063 Rev. K

Dimensions are in millimeters (inches)
Figure 3: Dimensional Drawings for Digital Tachometer and Cutout

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TACH100 Standalone Digital Tachometer
Datasheet

176063 Rev. K

Dimensions are in millimeters (inches)
Figure 4: 7072 Weatherproof Housing and Cutout

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TACH100 Standalone Digital Tachometer
Datasheet

176063 Rev. K

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 UnitedStates and other countries. The Baker Hughes logo is a trademark of Baker Hughes Company. All other product andcompany 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 or 1.800.227.5514 (US only)
Bently.com

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