Pocket-Sized Surface Roughness Tester Possess Ra Rz Rt Rq
General Introduction
Pocket-Sized Surface Roughness Tester SRT-5000B is a new generation
of Surface Roughness Tester Series. It features high accuracy, wide
application, simple operation, portability and stable performance.
The tester is widely used in measuring the surface roughness of
various metals and non-metals. Its integrated structure of sensor
and main body and hand-held design make it suitable to be used in
production sites.
1.Possess Ra, Rz, Rt, Rq.
2.Pocket-sized, easy to carry, anti-shock and vibration.
3.One point calibration is simple and easy to use, and can be
quickly completed by the user.
4.Piezoelectric ceramic sensor, firm and durable.
5.256*64 OLED display with high brightness, low power consumption
and exquisite font display.
6.Large capacity rechargeable lithium battery, long working time.
7.Possess 0.25, 0.8, 2.5three kind of sampling length.
8.Metal shell, strong anti-interference ability.
9.Conform to GB, ISO, DIN and JIS standards.
10.High speed DSP chip, high computing speed.
11.Rapid calculating speed, only takes 2s to complete calculation
after measurement stroke.
Working Principle
When the sensor was driven by a driver to make a linear uniform
motion along the testing surface, the stylus which touches with the
work surface moves up and down along the work surface
perpendicularly. 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 CPU into Ra, Rz, Rq
and Rt values and then displayed on the screen.
Recommended Sampling Length Table
| Ra (µm) | Rz (µm) | Sampling Length λc (mm) |
| >5~10 | >20~40 | 2.5 |
| >2.5~5 | >10~20 |
| >1.25~2.5 | >6.3~10 | 0.8 |
| >0.63~1.25 | >3.2~6.3 |
| >0.32~0.63 | >1.6~3.2 |
| >0.25~0.32 | >1.25~1.6 | 0.25 |
| >0.20~0.25 | >1.0~1.25 |
| >0.16~0.20 | >0.8~1.0 |
| >0.125~0.16 | >0.63~0.8 |
| >0.1~0.125 | >0.5~0.63 |
| >0.08~0.1 | >0.4~0.5 |
| >0.063~0.08 | >0.32~0.4 |
| >0.05~0.063 | >0.25~0.32 |
| >0.04~0.05 | >0.2~0.25 |
| >0.032~0.04 | >0.16~0.2 |
| >0.025~0.032 | >0.125~0.16 |
| >0.02~0.025 | >0.1~0.125 |
Technical Parameters
1.Parameters (µm):Ra, Rz, Rq, Rt
2.Traverse Length (mm):6
3.Sampling Length (mm):0.25, 0.80, 2.50
4.Evaluation Length (mm):1.25, 4.0, 5.0
5.Measuring Range (µm):Ra, Rq: 0.05 ~ 15.0 Rz, Rt: 0.1 ~ 50
6.Display error: ±(10nm+0.1A)
7.Repeatability of
Displayed Value:＜6%
8.Stylus:Diamond tip Radius:10 µm±1 µm Diamond tip Angle:
9.Stationary measuring force and its variations of the stylus:
Stationary measuring force: ≤0.016N
Variation of the measuring force: ≤800N/m
10.Pressure of the skid-dependent of the sensor: ≤0.5N
11.Battery:3.7V Li-ion battery
12.Overall Dimensions:106 mm×70 mm×24 mm
13.Weight:200g
14.Operating conditions:
Temperature: -20℃～40℃
Relative humidity:< 90%
No vibration; no corrosive media
15.Conditions for storing: Temperature: -25℃～60℃ Relative
humidity:< 90%
| | Part | Quantity |
| Standard | Host SRT-5000B | 1 |
| 5V ac power adapter | 1 |
| USB cable | 1 |
| Operating manual | 1 |
| Warranty card | 1 |
| Calibration certificate | 1 |
| Packing list | 1 |
| Qualified certificate | 1 |
| Equipment case | 1 |
| Optional | Standard sample template | 1 |
| Glass support | 1 |
