The MK-21 accurately measures machine vibration, as recommended by ISO 10816, to alert the user to know when to provide cost-effective machinery maintenance to avoid costly down time, now and in the future.
In addition to standard approaches, the MK-21uniquely checks machinery condition, in the Diagnostic mode, without reference to a chart … as easy as reading a, bb, ccc and dddd on the display – where a = Quite Good (Zone A), bb = Good (Zone B), ccc = Poor (Zone C) and dddd = Bad (Zone D).
Condition Zones A,B,C & D cover those vibration velocity ranges noted in ISO 10816.
Measuring and Frequency Ranges
| Low Range | HI Range | ||
| Measuring Range | ACC | 0.0 ~ 20.0 m/s² | 0 ~ 200 m/s² |
| ACCP | 0.0 ~ 20.0 m/s² | 0 ~ 200 m/s² | |
| VEL | 0.0 ~ 20.0 mm/s | 0 ~ 200 mm/s | |
| DISP | 0 ~ 200 µm | 0 ~ 1990 µm | |
| Frequency Range | ACC | 1k ~ 20kHz | |
| ACCP | 1k ~ 20kHz | ||
| VEL | 10 ~ 1kHz | ||
| DISP | 10 ~ 1kHz | ||
Complete Kit
The MK-21 is supplied as a complete kit with the gauge and wrist strap, probe and cable assembly, batteries and instruction manual — all supplied in a fitted, hard plastic carrying.

