1. High precision surface roughness meter TR210 (wireless version)

• Multi parameter measurement: Ra、Rz、Ry、Rq、Rp、Rm、Rv、Rt、R3z、Rmax、Rsk、Rku、S、Sm、tp、Rmr、Rpc、RzJIS；
• Improve the main structure of high-precision inductive sensors;
• RC, PC-RC, GAUSS, D-P four filtering methods;
• Compatible with ISO, DIN, ANSI, and JIS standards;
• 128 × 64 dot matrix LCD, capable of displaying Chinese characters, all parameters, and graphics;
• Using ARM processors greatly improves testing speed;
• Built in lithium-ion rechargeable battery and charging control circuit, high capacity, no memory effect, continuous working time greater than 20 hours;
• Built in Bluetooth communication module, can connect to Bluetooth printer, can print all parameters and contour graphics;
• The Bluetooth communication module can switch to data mode and wirelessly connect with Android data terminals such as mobile phones;
• Mini-B USB interface, can be used as a charging interface and PC communication interface;
• Increased storage space, with built-in 2M FLASH storage and a large expandable 32GB Micro SD card;
• Equipped with automatic shutdown, memory, and various prompt instructions;
• Standard upper computer software, compatible with L.U.W multi operating system platform;
• Optional accessories include surface sensors, deep groove sensors, measurement platforms, extension rods, etc.

1.1 Measurement principle

When measuring the surface roughness of a workpiece, the sensor is placed on the measured surface and driven by the internal driving mechanism of the instrument to slide at a constant speed along the measured surface. The sensor senses the roughness of the measured surface through the built-in stylus. At this time, the roughness of the measured surface of the workpiece causes the stylus to produce longitudinal displacement, which changes the inductance of the sensor's inductance coil. As a result, an analog signal proportional to the roughness of the measured surface is generated at the output terminal of the phase sensitive rectifier. After amplification and level conversion, the signal enters the data acquisition system. The ARM chip performs digital filtering and parameter calculation on the collected data, and the measurement results are read on the LCD display, output on the printer, and can also communicate with a PC.

1.2 sensor

Detection principle: Inductive type

Measurement range: 160 μ m

Needle tip radius: 5 μ m

Needle tip material: Diamond

Touchpin force measurement: 4mN (0.4gf)

Needle angle: 90 °

Longitudinal radius of guide head: 45mm

1.3 Drive parameters

Large drive stroke: 17.5mm/0.7inch

Drive speed:

When the sampling length is 0.25mmVt=0.135mm/s

When the sampling length is 0.8mmVt=0.5mm/s

When the sampling length is 2.5mmVt=1mm/s

When returning, Vt=1mm/s

1.4 Indication error

Not greater than ± 10%

1.5 Indication variability

Not exceeding 6%

1.6 show contents

Menu: Modify measurement conditions, calibrate readings, select communication with PC or print output, etc.

Parameters: roughness parameters compatible with ISO, DIN, ANSI, and JIS standards.

Graphics: Unfiltered contour graphics, filtered contour graphics, and TP curves.

Prompt information: measurement information, menu prompt information, error information, battery level and shutdown prompt information.

1.7 Contour and Filter

Table 1

1.8 Cut length/sampling lengthl

Automatic, 0.25mm, 0.8mm, 2.5mm optional

1.9 evaluation lengthln

（1~ 5）loptional

Roughness parameters and display range

Table 2

1.10 Measurement range and resolution

Table 3

1.11 Temperature/humidity range

Working environment: Temperature: 0~40 ℃

Humidity:<90% RH

Storage and transportation environment: Temperature: -40 ℃~60 ℃

Humidity:<90% RH

1.12 Dimensions and weight

140 × 52 × 48mm, approximately 440g.

1.13 Standard configuration

Table 4 Standard Configuration List