Salutron SRT5000 User manual

SRT5000
Surface Roughness Tester
Instruction Manual

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Table of Content
1General introduction.............................................................................................3
2 Working principles................................................................................................5
3 Description of the gauge.....................................................................................6
5 Entry into service ..................................................................................................8
5.1 Measurement preparation.........................................................................................................8
5.2 Turn on/off.................................................................................................................................9
5.3 Selecting parameters.................................................................................................................9
5.4 Measuring................................................................................................................................10
5.5 Calibration ..............................................................................................................................11
5.6 Battery recharge......................................................................................................................12
6. Daily maintenance..............................................................................................12
6.1 Maintenance............................................................................................................................12
6.2 Reparation...............................................................................................................................13
7. Terminology.........................................................................................................13

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1 General introduction
The SRT 5000 is a portable surface roughness tester with
high accuracy, simple handling and a stable performance. It
is widely applicable for testing surfaces of all kinds of metals
and non-metals.
By using a high-speed DSP processor for the data
processing and calculation, measurement and
calculation speed has been improved.
Through the lithium ion rechargeable batteries, it can
work many hours. The gauge can also work while
charging. The charging time is short, while the battery life
is long.
The USB port enables fast battery charging.
If you do not understand any of the technical terms,
please refer to chapter 7 for explanation.

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2 Working principles
When the sensor is making a linear uniform motion along
the test surface, the contact stylus in perpendicular with the
work surface is moving up and down on the work surface. Its
motion is converted into electric signals, which are
amplified, filtered and transformed into digital signals
through A/D. The signals are then processed by the DSP
into Ra and Rz (or Rq and Rt) values before displayed on
the screen.

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3 Description of the gauge
Calibrate Sample

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4 Technical parameters
Measurement Parameters:Ra (ISO), Rz (DIN), Rq, Rt
Units:µm, µinch
Stroke Length(mm): 6
Threshold wavelength (mm): 0.25，0.80，2.50
Measurement Range(µm):
Ra：0.05 ~ 10.0
Rz：0.1 ~ 50
Accuracy: According to ISO Class 3
Tip arc radius:10 µm±1 µm
Touch needle static force measurement: ≤ 0.016N
Force measurement rate: ≤ 800N/m
Sensor guide head pressure: ≤ 0.5N
Battery: 3.7V Lithium Ion battery
Dimension: 106 mm×70 mm×24 mm
Weight: 200g
Working Environment Conditions:
Temperature: -20℃～40℃
Relative Humidity: <90%
Surrounding: no vibration and no corrosive media.

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5 Entry into service
5.1 Measurement preparation
Take out the instrument from the case. The sensor
protector should be closed as indicated below.
Move the switch to the right to open the protector so that
the sensor comes out.

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5.2 Turn on/off
To turn on the device press . The device will turn on
being set as adjusted before shut down. In order to turn of
the device press . If the device will be left unused for 3
minutes, it will shut down automatically.
5.3 Selecting parameters
Before measuring the user should set up following
parameters:
•Measurement method: Ra, Rz, Rq, Rt adjustable using
•Threshold wavelength: 0.25 mm, 0.8 mm, 2.5 mm
adjustable using
•Measuring units: µm/µinch adjustable by holding
for about 2 seconds

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5.4 Measuring
When all parameters are set and the protector is open one
can start measuring. Point the Stylus mark to the
measured area and press the start button on the top of the
gauge. After hearing a signal, the measurement has been
finished and the screen will show the measured value.
Note:
1) During the pickups movement, make sure that the
tester stands stable on the measured surface to
avoid measurement errors.
2) During the sensors return to its starting position, the
tester will not respond to further actions.
3) After a measurement has been taken it is possible to
display the value according to all other
measurement methods (Ra, Rz, Rq, Rt) by pressing
. Note that this conversion is not very accurate. For
precise values one has to set the corresponding
measurement method before measuring.