Lutron Electronics vt-8204 Operation Manual

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1

V

IBRATION

TACHOMETE

R

Model : VT-8204

Y

our purchase of this
VIBRATION TACHOMETER
marks a step forward for
you into the field o

f

precision measurement.

A

lthough this VIBRATION
TACHOMETER is a
complex and delicate
instrument, its durable
structure will allow many
years of use if proper
operating techniques are
developed. Please read
the following instructions
carefully and always keep
this manual within easy
reach.

OPERATION MANUAL

TABLE OF CONTENTS

1 FEATURES................................................................

.

1

2 SPECIFICATIONS......................................................

.

3

3 FRONT PANEL DESCRIPTION.....................................7

3-1 Display....................................................................

.

7

3-2 Power button ( vibration ).........................................7

3-3 Hold/ESC/Zero button...............................................7

3-4 Eenter/REC button....................................................7

3-5 Function/Send button...............................................

.

7

3-6 Unit/Logger button...................................................7

3-7 Operation button ( tachometer )................................7

3-8 Surface speed wheel ( contact tach. )........................7

3-9 RPM adapter ( contact tach. )....................................7

3-10 Protection cover ( contact tach. )..............................7

3-11 Screw for protection cover.......................................

.

7

3-12 BNC plug ( vibration sensor )....................................7

3-13 Vibration sensor.......................................................7

3-14 Magnetic base.........................................................

.

7

3-15 BNC socket ( vibration sensor ).................................7

3-16 Laser light beam ( photo tach. )...............................

.

7

3-17 Photo tach. detecting sensor....................................

.

7

3-18 IR probe input socket...............................................7

3-19 RS-232 output terminal............................................7

3-20 Battery cover/battery compartment..........................

.

7

3-21 Cone rubber ( RPM adapter )....................................7

3-22 Funnel rubber ( RPM adapter ).................................

.

7

4 VIBRATION MEASURING PROCEDURE........................9

5 TACHOMETER MEASURING PROCEDURE....................

.

20

6 IR TEMP. MEASURING PROCEDURE............................24

7 RS232 PC SERIAL INTERFACE....................................24

8 BATTERY REPLACEMENT...........................................

.

26

9 OPTIONAL ACCESSORIES..........................................

.

26

10 CLASSIFICATION RANGES ( Vibration ).....................

.

27

11 SENSITIVITY RELATIVE TABLE ACCORDING

ISO 2954 ( Vibration ).............................................

.

28

1. FEATURES

Vibration function :

* Applications for industrial vibration monitoring :

All industrial machinery vibrates. The level of vibration
is a useful guide to machine condition. Poor balance,
misalignment & looseness of the structure will cause
the vibration level increase, it is a sure sign that the
maintenance is needed.

* Acceleration range : 200 m/s^2.
* Velocity range : 200 mm/s.
* Displacement ( p-p ) range : 2 mm.
* Metric and imperial display unit .
* RMS measurement for Acceleration and Velocity.
* Peak to peak measurement for Displacement.
* Peak function for Acceleration and Velocity.
* Max. hold function for Acceleration ( peak ),

Velocity ( peak ) and Displacement ( peak to peak ).

* Frequency range 10 Hz - 1 kHz, sensitivity relative

meet ISO 2954.

* Zero function, executed by front buttons.
* Data logger function with flexible sampling time

selection, can save max. 1000-point data into the
memory circuit.

* Data hold button to freeze the desired reading.
* Memory function to record maximum and minimum

reading of RMS value ( Acc., Vel. ) or Displacement ( p-p ).

* Auto shut off saves battery life.
* Professional vibration meter supply with separate

vibration sensor & magnetic base, full set.

1

Tachometer ( photo, contact ) function :

* Laser light detecting source, long measuring range up

to 1.5 meters, it is useful in the RPM measurement
application where the machine would be a risk to the
operator or close access is difficult or not possible.

* The best Tachometer in the world. 2 in 1, one

instrument combine Photo Tachometer & Contact
Tachometer.

* Wide measuring range from 0.5 to 100,000 RPM, 0.1

RPM resolution for the measured value < 1000 RPM.

* Microprocessor based circuit, crystal time base, high

precision with 0.05% accuracy.

* Memory with recall function, the last value, max., value,

min. value will be stored into the memory automatically.

* Patent patented.

General function :

* Super large LCD display.
* No contact infrared temperature measurement via

optional IR temp. probe.

* RS 232 computer interface.
* Optional data acquisition software and data logger

software.

* Microcomputer circuit, high performance.
* Built-in low battery indicator.
* Heavy duty & compact housing case.
* Complete set with the hard carrying case.

2

2. SPECIFICATIONS

2-1 Vibration function

Velocity 0.5 to 199.9 mm/s
range 0.05 to 19.99 cm/s

0.02 to 7.87 in/s
Remark

Velocity peak range :

1.0 to 199.9 mm/s

Acceleration 0.5 to 199.9 m/s^2
range 0.05 to 20.39 g

2 to 656 ft/s^2
Remark

Acceleration peak range :

1.0 to 199.9 m/s^2

Displacement 0.005 to 1.999 mm
( p-p ) 0.002 to 0.078 inch

* p-p : Peak to Peak

Frequency 10 Hz to 1 KHz
range

* Sensitivity relative during the

the frequency range meet ISO 2954
Refer to table 1, page 28.

Function Velocity RMS, Peak, Max. hold (peak).

Acceleration RMS, Peak, Max. hold (peak).
Displacement p-p, Max. hold (p-p).

* Peak : To measure the peak value.

Note : Peak function is available when the

measuring value > 25 digits only.
* p-p : Peak to peak value.
* Max. hold : To hold the max. peak or p-p value.

Accuracy ± ( 5 % + 5 d ) reading , 160 Hz, 80 Hz.

* 23 ± 5 ℃

Calibration Velocity 50 mm/s ( 160 Hz )
point Acceleration 50 m/s^2 ( 160 Hz )

Displacement ( p-p ) 0.14 mm ( 160 Hz )

Data hold Freeze the desired reading.

3

Memory Maximum & Minimum value.

*

Memory function are only available for

RMS ( Acc., Vel. ) and Displacement (p-p).

Sampling time Approx. 1 second.
Data logger Data logger function with flexible

sampling time selection, can save max.
1000-point data into the memory circuit.

Sampling Time Manual Push the data logger button
of Data Logger once will save the data one

time.

Auto 1, 2, 10, 30, 60, 600, 1800,

3600 seconds.
Sampling time Approx. 1 second.
Power off Auto shut off, saves battery life,

or manual off by push button.

2-2 Tachometer ( photo, contact ) function

Range Photo Tachometer : 10 to 99,999 RPM

Contact Tachometer : 0.5 to 19,999 RPM
Surface Speed ( m/min. ) :

0.05 to 1,999.9 m/min.

Surface Speed ( ft/min. ) :

0.2 to 6,560 ft/min.
Accuracy ± ( 0.05 % + 1 digit ).
Resolution 0.1 RPM < 1,000 RPM

1 RPM 1,000 RPM≧

0.01 m/min. < 100 m/min.

0.1 m/min. 100 m/min.≧

0.1 ft/min. < 1000 ft/min.
1 ft/min. 1,000 ft/min.≧

Time base Quartz crystal

4

Sampling Time Photo Tachometer - 1 sec. ( 60 RPM ).≧

Contact Tachometer - 1 sec. ( 6 RPM ).≧
Photo 50 - 1,500 mm typically.
Tachometer

* Spec. of detecting distance are that under

detecting

the size of reflecting tape is 10 mm square

distance

& the measuring RPM value is 1,800 PPM.
The max. & min. detecting distance may
change under different environment,
different reflecting tape or the measuring
RPM beyond 1800 RPM.

Laser light * Less than 1 mW.
source * Class 2 laser diode. Red. Wave length

* Photo Tach.

is 645 nm approximately.

Memory Last value, Max. value, Min. value.

2-3 General function

Display 45 mm x 48 mm LCD size.
Circuit Exclusive microcomputer circuit.
Data output RS 232 serial output.
Operating 0 to 50 ( 32 to 122 ).℃℉
temperature
Operating Less than 80% RH.
humidity
Power supply 1.5 V battery x 4 PCs

UM-3, AA, R6

Alkaline or heavy duty type,

5

Power Vibration Approx. 18 mA
consumption Contact Tach. Approx. 20 mA

Photo Tach. Approx. 31 mA
Weight Meter 397 g/0.87 LB

Probe with 110 g/0.24 LB

magnetic base
Dimension Meter :

46.8 x 75.5 x 188 mm
( 1.8 x 3.0 x 7.4 inch ).

Vibration sensor probe:

Round 18 mm Dia. x 40 mm.

Accessories Instruction manual......................... 1 PC.

included Vibration sensor ( VB-82 )..............

.

1 PC.

Magnetic base...............................

.

1 PC.

Reflecting tape marks (600 mm)..... 1 PC.

RPM cone rubber, AS-35A............... 1 PC.

RPM funnel rubber, AS-35B............

.

1 PC.

Carrying Case................................

.

1 PC.

Optional *Data Acquisition software,

accessories ................................SW-U801-WIN

*Data Logger software, SW-DL2005

*RS232 cable..............UPCB-02

*USB cable.................

.

USB-01

*IR Temp. probe.........IR-962

6

3. FRONT PANEL DESCRIPTION

Fig. 1

7