Tenmars ST-141 Bedienungsanleitung

ST-141 Dual Channel Vibration Meter

ST-141D Recording 2-Channel

Vibration Meter

User’s Manual

HB2TM1410000

 
 
Contents: 
 
1Introduction .......................................................1 
2Accessories.......................................................1 
3Safety Precaution..............................................1 
4Instrument Description ......................................2 
5Operation ..........................................................3 
5.1 Turn on the backlight..................................4 
5.2 Manual recording for each single data file ..4 
5.3 Record for a long time ................................4 
5.4 Access the data recorded in the memory....5 
5.5 Lock the maximum and minimum reading ..5 
5.6 Freeze window function..............................5 
5.7 Automatic shutdown function......................5 
5.8 Zero function ..............................................6 
5.9 Installation of accelerometer....................... 7 
5.10 Function settings ........................................8 
6Software Installation: .......................................11 
7General Specifications ....................................12 
8Electrical Specification: ...................................13 
9Maintenance or Repair .................................... 14 
10 Battery Replacement.......................................14 
11 Product Disposal .............................................14 

ST-141/ST-141D

- 1 -

1 Introduction

This meter can measure the vibration by the rotator

and the reciprocator, as well as the damage of

bearings. The items include acceleration, velocity,

and displacement; through the meter, you can

determine if to repair or renew the machines.

2 Accessories

Meter

User’s Manual

Accelerometer

Low noise cable

Magnetic base

1.5V LR6/AA battery

Carrying case

9V AC to DC adaptor

USB cable and Installation disk (ST-141D)

Handheld probe + round probe + pointed probe

3 Safety Precaution

Caution! Please refer to this manual.

Improper use may damage the meter

and its components.

Complies with European Directive

Do not operate in environments with flammable gas or

humid environments.

Operating altitude: up to 2000M.

Operating environment: Indoor use; Pollution degree 2.

Clean with soft cloth when dirty, such as glasses cloth.

Do not clean with chemicals and other solvents.

EMC: EN61326-1:CISPR 11:Group 1, Class B

Class B–Equipment for use in all establishments other

than domestic.

Group 1–RF energy generated is needed for internal

functioning.

ST-141/ST-141D

- 2 -

4 Instrument Description

1. Accelerometer input

2. USB port (ST-141D)

3. Led working light

4. Freeze window function

button

5. Unit selection function

button

6. Function selection button

7. Maximum / minimum

value function button

8. LED working light function

button

9. Determining function

button

10. Power switch function

button

11. Leftward function button

12. Setting function button

13. Single record function

button

14. Access record function

button

15. Backlight function

Button

16. Zero setting function

button

17. Up / acceleration HI

function button

18. Rightward function

button

19. Automatic recording

function button

20. Downward / acceleration

LO function button

21. External power of DC 9V

22. Battery cover

23. Tilt stand

ST-141/ST-141D

- 3 -

5 Operation

1. Assemble the accelerometer and the magnet

base. Lock one end of the cable, and mount

the other end of the cable on the

accelerometer input of the meter. Then, make

the accelerometer suck against the DUT

(device under test).

2. The other way is to assemble the

accelerometer and the handheld probe. Lock

one end of the cable, and mount the other end

of the cable to the accelerometer input of the

meter. Then, take the probe with hand and

detect the DUT.

3. In boot state, press to turn on or off, press

for more than 1 second to disable the

function of automatic shutdown, the automatic

shutdown sign on the LCD will also disappear.

＊In setup mode, the power cannot be turned

off. Please exit the setup mode in advance.

4. Press to select the measurement mode:

Acceleration (ACC) True root mean square

value (RMS) → Acceleration (ACC) Peak

value (PEAK) → Velocity (VEL) True root

mean square value (RMS) → Velocity (VEL)

Peak value (PEAK) → Displacement (DISP)

peak to peak value (PP). Every time when

button is pressed, the measurement condition

is switched.

5. In the acceleration (ACC) measurement mode,

press or to select HI or LO range

(For the measured frequency, HI range is

10Hz ~ 5KHz, LO range is 10Hz ~ 1KHz.), The

measurement is through the filter circuit and

complies to ISO 2954.

ST-141/ST-141D

- 4 -

6. Press to select the measurement unit.

Every time when is pressed, the

measurement condition is switched.

7. Read the measured value displayed on the

LCD.

8. Press for more than 1 second to turn on

the LED working light as auxiliary lighting;

quickly press to disable this function.

5.1 Turn on the backlight

In boot state, press to light on the backlight;

press again to turn off the backlight function.

＊The backlight will auto turn off after it is lighted on

for 15 seconds.

＊If the meter is connected with an external power

supply, the backlight will turn on automatically.

5.2 Manual recording for each single data

file

Press to save one data file, then LCD will

display the "REC" sign and its final file number, for

example: 0001. Every time when the button is

pressed, the file number is plus 1.

5.3 Record for a long time

Press to start for a long time recording; at the

moment, LCD will display the "REC" sign and

disable the automatic shutdown function. Press

for more than 1 second to cancel the long time

recording. For the sampling time, please read the

step 2 in the section 5.10 function settings.

ST-141/ST-141D

- 5 -

5.4 Access the data recorded in the

memory

For accessing the recording data, please first

press , LCD will display "MEM" sign at the

moment; then enter the memory reading mode to

access the data file in the memory. Press /

to switch the data file, press again to exit this

mode.

5.5 Lock the maximum and minimum

reading

In the measurement mode, press , both MAX /

MIN start at the same moment. Every time when

button is pressed, the mode will be displayed

according to the cycle of . Press for

more than 1 second to stop the function.

5.6 Freeze window function

Press to freeze the window and stop updating

the temperature reading value. And then press

for more than 1 second to cancel the freezing

window.

＊In addition to the power button, backlight button,

working light, all other buttons are invalid.

5.7 Automatic shutdown function

The device will automatically turn off after 15

minutes if no action. Press for more than 1

second to turn on or off the automatic shutdown

function

ST-141/ST-141D

- 6 -

5.8 Zero function

In the measurement mode, press to turn on

the zero function, and press again to turn off

the zero function.

1. In the measurement mode, press for more

than 1 second to enter the zero setting.

2. Press to select the zero function, press

or to select the zero channel.

3. Press , this meter will automatically access the

desired zero value and display it on the LCD.

4. After setting, press again to exit the zero

setting and enter the measurement mode.

ST-141/ST-141D

- 7 -

5.9 Installation of accelerometer

If you need to set up a permanent measurement

point on a machine, but you expect not to drill any

hole on the machine, you may use the stud of

bonding type which can be fixed with a rigid

adhesive on the measurement point. We

recommend using the epoxy resin type or the

cyanoacrylate adhesive type, because the soft

adhesive type will significantly reduce the valid

frequency range of the accelerometer.

If the measuring point is a plane, you may use the

permanent magnet base to achieve a simple

installation. However, this method will make the

resonant frequency of the test accelerometer

reduced to 7kHz; therefore, it cannot be applied on

the measurement of more than 2kHz. The suction

force of the magnet can withstand vibration force up

to 1000 - 2000m/s², which is dependent on the size

of the accelerometer.

If the accelerometer is mounted on the top of a

handheld probe, it can help the rapid measuring

work. Because the overall stiffness reduces, the

Epoxy resin or

cyanoacrylate

adhesive

Frequency

Adhesive

Accelerometer output

Frequency

Accelerometer output

Permanent

magnet base

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