TT-RT Series Surface Roughness Tester

TESTRON TT-RT Series Surface Roughness Tester is widely used in production site to measure surface roughness of various machinery-processed parts, calculate corresponding parameters according to selected measuring conditions and clearly display all measurement parameters.

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Categories: Material Testing, Metal Testing

Description

To measure surface roughness, a sensor is placed directly onto the material’s surface and moved uniformly across it using an internal drive mechanism within the tester. As the sensor travels, a sharp built-in probe detects variations in the surface texture. These variations cause the probe to displace, altering the inductance in nearby coils and generating an analog signal that corresponds to the surface roughness. This signal is then processed by a phase-sensitive rectifier and analyzed by a dedicated digital signal processor (DSP), which calculates and displays the measurement results on an LCD screen.

TESTRON TT-RT Series offers 2 models.

TT-RT-S4 (Functional type) – measures parameters Ra, Rq, Rz, Rt
TT-RT-S16 (Basic type) – measures parameters Ra, Rz

Test Standards of TT-RT Series Surface Roughness Tester

GB/T6062, ISO 4287, DIN4768, JIS B, ANSI46.1

Features of TT-RT Series Surface Roughness Tester

Handheld, lightweight and easy to use
Highly sophisticated inductance sensor
Built-in lithium ion rechargeable battery and control circuit with high capacity
Manual or automatic power off. Metric /Imperial
Use RS-232 data output to connect with PC
Provide Bluetooth data output choice

Technical Specification of TT-RT Series Surface Roughness Tester

Model		TT-RT-S4	TT-RT-S16
Parameters		Ra, Rq, Rz, Rt	Ra, Rz
Measuring Range		Ra, Rq: 0.005~16.00μm / 0.020~629.9μinch Rz, Rt: 0.020~160.0μm / 0.078~6299μinch	Ra: 0.05~10.00μm / 1.000~400.0μinch Rz: 0.020~100.0μm / 0.780~4000μinch
Accuracy		≤±10%
Fluctuation of Display Value		≤6%
Resolution		0.001 / 0.01 / 0.1
Sensor	Radius of Probe Pin	5μm	10μm
	Material of Probe Pin	Diamond
	Measurement Force of Probe	4mN (0.4gf)	16mN (1.6gf)
	Probe Angle	90°
	Vertical Radius of Guiding Head	48mm
	Maximum Driving Stroke	17.5mm / 0.7inch
	Cutoff length (l)	0.25mm, 0.8mm, 2.5mm
Driving Speed	Sampling	When Length = 0.25 mm, Vt = 0.135 mm/s
		When Length = 0.8 mm, Vt = 0.5 mm/s
		When Length = 2.5 mm, Vt = 1 mm/s
	Returning	Vt = 1mm/s
Profile Digital Filter		RC, PC-RC, GAUSS, D-P
Evaluation Length		1~5 L Optional
Data Memorize		7 Groups	–
Operating Conditions		Temp.: 0~50℃	Humidity: ＜80%RH
Power Supply		Built-in Rechargeable Li-ion Battery
Dimensions		140x52x48 mm
Weight		420g

Probes of TT-RT Series Surface Roughness Tester

Item	Application	Structure Diagram
Standard Sensor	Used for roughness tests on plane surface, shafts and in bores from 5.5 mm diameter. Maximum bore depth 22mm
Groove Stylus	Used to measure the surface roughness of deep groove, greater than 5 mm in width, less than 9.5 mm in depth; or the pedestal seat less than 9.5 mm in height.
Curvature Probe	Used to measure surface roughness of curved workpiece larger than 3 mm in curvature radius