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 |