JD-220 Digital Portable Roughness Tester Roughness Meter 

The performance advantage

-The roughness of metal and non-metallic surface

-Pocket-size & economically price

-Large measuring range suitable for most materials

-Features external calibration at keyboard

-Optimized electric circuit design with transducer structure-design,high integrate power, driver and display. 

-Select freely with Ra,Rz, Rq, Rt parameters.

-It could test ex-circle, flat surface, conical surface and also test groove with length and width larger than 80*30mm.

Main Function:

-Shape used to pull aluminum mold design, durable, anti-electromagnetic interference ability significantly, in line with the design of the new trend.

-Using high-speed DSP processor for data processing and calculation, measurement and computation speed is greatly improved.

-Liquid crystal display wide temperature using OLED color display, popular high brightness, no visual angle,, is suitable for various occasions.

-The lithium ion rechargeable battery, can work for a long time, no memory effect, can while charging, charging time is short, long battery life.

-Charging and communication using the common USB interface. Using a dedicated charger or computer USB port for charging, convenient and quick.

 -Dot matrix liquid crystal display, interface prompt information rich.

-Real-time monitoring of lithium battery power and display, and to remind users to charge with charging progress indication.

-Automatic shutdown function and low power design of software and hardware of the instrument with long working hours, suitable for field use.

Specification:

-Testing parameters(µm):Ra,Rz, Rq,Rt

-Stroke length(mm):6

-Sample length(mm):0.25 ,0.80 ,2.50

-Evaluation length(mm):1.25 ,4.0 

-Measuring range(µm): Ra:0.05~10.0  Rz:0.1~50

-Error:±15%

-Variability:<12%

-Transducer contacting pin round diameter and angle:

-Contacting pin round diameter:10 µm±1 µm

-Battery:3.7V Li

-Size:106 mm*70 mm*24 mm

-Weight:200g

-Sensor needle static force and its rate of change:

    Stylus static force: ≤ 0.016N

    Force measuring rate of change: ≤ 800N/m

-Working conditions:

Temperature:-20℃~40℃

Relative humidity:<  90%

No shake and coercivity around