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| Product Name | KairDa NDT120 Roughness Gauge | Ipre PRSR200 Roughness Gauge |
| Product Price | $942.00 | $654.00 |
| Details | Details | |
| Model comparison | ||
| Principle | Contact | Contact |
| Instrument Type | Portable | Portable |
| Display Type | Digital | Digital |
| Measurement Function | Surface Roughness Waviness Contour/Form | Surface Roughness |
| Measurement parameters | Ra Rz Rq Rt Rp Rv RSm Rmr(c) Others | Ra Rz Rq Rt Rp Rv RSm Rmr(c) |
| Test object | General workpiece | Sand blasting shat blasting workpiece |
| Measuring Range | >50μm | 5-50μm |
| Accuracy | Others | ±10% |
| Sampling Length | Multi-range | Multi-range |
| Sensor Configuration | Standard Small Bore Groove Curved Surface Lateral/Extension | Standard Small Bore Groove Curved Surface |
| Applicable Workpiece | Flat Surface/Shaft Groove/Slot Curved Surface Deep Hole Narrow Space Large/Fixed Workpiece | Flat Surface/Shaft Groove/Slot Curved Surface |
| Parameter comparison | ||
| Measurement parameter | Ra,Rz=Ry(JIS),Rq,Rt=Rmax,Rp,Rv,R3z,R3y,RzJIS,Rs,Rsk,Rku,Rsm,Rmr | |
| Measurement Range | Ra：0.005um~16.00um | |
| Display Range | Ra,Rq：0.005um~16um；Rz,Rv,R3z,Rt,Rp,R3z：0.02um~160um；Rsm,Rs：1mm；Rmr：0~100%；Rsk：0~100% | Ra、Rq（0.005~16μm）；Rz、Ry、Rt、Rp、Rv、Rmax、R3z、Rz（JIS）（0.02~160μm）；RS、RSm（1mm）；Rmr、Rsk（0~100%） |
| Indication accuracy | 0.001um | |
| Range | ±20um，±40um，±80um | ±20μm、±40μm、±80μm |
| Sampling length | 0.25, 0.80, 2.50, automatic | 0.25mm、0.8mm、2.5mm |
| evaluation length | 1L~ 5L (optional, L is the sampling length) | （1-5）L |
| Measurement stroke length | 3L~ 7L (optional, L is the sampling length) | |
| Maximum drive stroke length | 17.5mm / 0.71inch | |
| minimum drive stroke length | 1.3mm / 0.052inch | 1.3mm/0.052inch |
| Indication Error | ≤±7% | Not more than +/- 10% |
| Indication variability | ＜6% | Not more than 6% |
| tip angle | 90° | |
| Measurement profile | Asperity, ripple, original contour | asperity |
| filter | RC,PC-RC,Gauss,D-P | RC、PCRC、Gauss、ISO13565 |
| Internal storage capacity | 100 sets of data | |
| Interface | USB | |
| Battery | Built-in lithium-ion rechargeable battery, length 5cm, width 3.3cm, thickness 0.4cm | |
| Dimension | 141*55*40mm | |
| Product weight | 400g | |
| Operating environmental conditions | Temperature: -20℃~ 60℃; relative humidity: < 90%; no vibration around, no corrosion medium | |
| Optional Accessories | Surface Sensor, Pinhole Sensor, Groove Sensor, Deep Groove Sensor, Extension Rod, Micro Printer, KA620 measurement platform | |
