| Product Type | Tachometer (Contact & NonContact Both) |
| Make | Fluke |
| Model | 931ESP |
| Range | ptical (non-contact) measurement: 1 to 99999 revolutions/minute Contact measurement: 1 to 19999 revolutions/minute |
| Precision | ±0.02%RD+1 |
| Sensing distance | (optical) 500 mm |
Key features
- 6-digit backlight display reads the data clearly
- Signal detection reminder avoids invalid detection actions
- Maximum/minimum/average value and final readings
- Setting/Turning off the automatic power-off function
- Small size and easy to hold
- Easy switching of the contact and non-contact measurement modes
- Different speed measuring heads and rotational speeds adapt to different measurement occasions