TE-4V
Drag-type tachometer for continuous remote engine shaft speed measurement in vehicles and other machines.
The tachometer consists of a sensor and a drag-type gauge. Sensors and gauges are interchangeable. D-4 sensor is suitable for work with a single gauge, D5 – with two gauges.
Technical parameters
Ambient air temperature:
Gage: -50..+50 oC
Sensor: -60..+125 oC
Gage inaccuracy
| RPM range, min-1 | Tachometer ratio | Temperature, oC | ||
| +20±5 | +50±5 | -50±5 | ||
| Inaccuracy, min-1 | ||||
| 500..1000 | 1:2 | ±55 | ±100 | ±100 |
| 1000..4000 | ±40 | ±80 | ±80 | |
| 25..250 | ±14 | ±25 | ±25 | |
| 250..1000 | 2:1 | ±10 | ±20 | ±20 |
Notes: allowed pointer swinging: ±50 min-1 for rpm range 500..1000 min-1 and ratio 1:2; ±13 min-1 for rpm range 125..250 min-1and ratio 2:1; no swinging allowed in other modes.
Allowed pointer deviation from zero position: 40 min-1 for ratio 1:2; 10 min-1 for ratio 2:1
Available ratios: 1:2, 2:1 (relation of input rpm to indicated rpm)
Vibratory durability
| Vibration (gage) frequency, Hz acceleration, m/s2 pointer deviation for rpm range 250..1000 min-1 and ratio 2:1, min-1 | 5..80 15 ±6 |
| Vibration (sensor) frequency, Hz acceleration, m/s2 | 10..200 100 |
Mass, not more than
Sensor: 0.98 kg
Gage: 0.70 kg
Cable sealing box: 0.25
Gauges and sensors can be supplied separately.
