| Applicable engines |
Gasoline engines |
| Detection method |
detection of electrical ignition pulse from the spark plug |
| Detection distance |
30 to 200 mm |
| Target object of detection |
High-tension cords (spark-plug cords) |
| Measurement ranges |
| 2-cycle |
4-cycle |
Measurement range (r/min) |
| - |
1 cylinder |
100 to 20000 |
| 1 cylinder |
2 cylinders |
100 to 20000 |
| - |
3 cylinders |
100 to 20000 |
| 2 cylinders |
4 cylinders |
100 to 20000 |
| - |
5 cylinders |
100 to 20000 |
| 3 cylinders |
6 cylinders |
100 to 20000 |
| 4 cylinders |
8 cylinders |
100 to 15000/ |
| - |
12 cylinders |
100 to 10000 |
|
| Measurement accuracy |
100 to 12,499 r/min ± 1 r/min
12,500 to 20,000 r/min ± 2 r/min |
| Measurement resolution |
1 r/min |
| Over-range display |
If the measured value exceeds the measurement range, the maximum value for that range is displayed together with an “ERROR” mark on the display unit. |
| Low battery display |
The “LOW” mark lights when the battery voltage drops below 3.3 V. |
| Display unit |
LCD, 5-digit |
| Character height |
10.5 mm |
| Display refresh time |
1 s, automatic update (2 s when the sensor signal exceeds 1 s) |
| Operating temperature range |
0 to +40 °C |
| Storage temperature range |
-10 to +60 °C |
| Power source |
Three AAA-type batteries |
| Continuous measurement time |
Approx. 100 hours
(when alkaline batteries are being used at a temperature of 20 ºC.) |
| Outer dimensions |
129 × 62 × 26.4 mm |
| Weight |
Approx. 90 g (excluding batteries) |
| Accessories |
AAA-type battery x 3 pieces |