Portable Surface Roughness Tester

Multiple Functions, Precise Measurement

Product Details

• Design of mechanical and electrical integration is adopted to achieve small bulk, lightweight and easy usage.
• Mini USB interface enables communication with PC.
• Automatic switch off, memory and various prompt instructions.
• Can measure 13 parameters including Ra, Rz, Rq, Rt, Rp, Rv, R3z, etc.

Applications

Measurement Principle

When measuring surface roughness of workpiece, the pickup is placed on the surface of the part and then tracing the surface at constant rate. The pickup acquires the surface roughness by the sharp stylus in pickup. The roughness causes displacement of pickup which results in change of inductive value of induction coils thus generate analogue signal which is in proportion to surface roughness at output end of phase-sensitive rectifier. This signal enters data collection system after amplification and level conversion. After that, those collected data are processed with digital filtering and parameter calculation by ARM processor and the measuring result can be read on OLED.

Product Specification

Parameter	Ra, Rz, Ry, Rq, Rt, Rp, Rv, Rmax, R3z, Rsk, RS, RSm, Rmr etc.
Measuring Range	Ra: 0.025 ~ 12.5 μm
Display Range	Ra, Rq:0.005 ~ 16 μm Rz, Ry, Rt, Rp, Rv, Rmax, R3z: 0.02 ~160 μm Rs, Rsm: 1mm ; Rmr: 0 ~ 100%(%Rt) Rsk: 0~100%
Range Limit	± 20μm, ± 40μm, ± 80μm
Maximum Display Resolution	0.001 μm
Filter	RC, PC-RC, GAUSS, D-P
Sampling Length L	0.25mm, 0.8mm, 2.5mm
Rate Length L	(1~ 5)*Sampling Length is selectable
Maximum Drive Stroke	17.5mm / 0.7inch
Maximum Drive Stroke	1.3mm / 0.052inch
Indication Variability	≤ ±10 %
Indication Repeatability	≤ 6%
Display Mode	128 x 64 OLED
Power Supply	3.7V Built-in rechargeable lithium battery
External Dimension	140mm x 52mm x 48mm
Weight	440g

Measuring Range & Corresponding Resolution

Automatic: 0.01μm~0.04μm
±20μm: 0.01μm
±40μm: 0.02μm
±80μm: 0.04μm

Standard Sensor Performance Indicators

Detection Principle	Inductive
Measuring Range	160μm
Tip Radius	5μm
Tip Material	Diamond
Stylus Force	4mN(0.4gf)
Stylus Angle	90°
Guide Head Longitudinal Radius	45mm

How to Use

When installing, hold the main part of the sensor with your hand, insert the sensor into the sensor connection sleeve at the bottom of the instrument as shown in the figure below, and then gently push it to the bottom. When disassembling, hold the main part of the sensor or the root of the protective sleeve with your hand and slowly pull it out.

Packing List

1 x Host machine

1 x Test pad

1 x Multiple engraved line template

1 x Standard sensor

1 x Power adaptor

Introduction to roughness meter buttons

Raw Picture

Daily Maintenance

**Main Unit

• Keep the surface of the main unit clean and remove dust with a soft dry cloth regularly
• This instrument is a precision measuring instrument and should always be handled with care to avoid vibration

**Sensor

• After completing the measurement, please put the sensor into the packaging box in time.
•  Please always pay attention to protecting the probe part of the sensor.

**Battery

•  Always observe the battery indicator. When low voltage appears, please charge it in time
• The charging time is about three hours. Try not to charge for a long time