Input signal is provided by alternator “W” contact or coming from the most common transducers (magnetic pick-up on crowned wheel or PNP and NPN proximity switches).
Working Hours alarm is used fot maintenance or oil change management.
Instrument can be set to read very low RPM, also displayed with a decimal digit.
| RA20 | |
|---|---|
| Power supply | 12/24 Vcc (10 - 30 Vcc) |
| Power consumption | < 200 mA 12V - < 100 mA 24V |
| Working temperature | –5 / 60 °C |
| Range of measure | from 1 - 50000 RPM |
| Accuracy | < 1 at 6000 RPM |
| Resolution | 1 or 10 RPM |
| Max input frequency | 5 KHz for PNP and NPN 10 KHz for “W” contact 20 KHz for magnetic pick-up |
| Alarms | Two adjustable threshold for each alarm LEDs signalings Buzzer Buzzer repeating or A1 alarm repeating (A2 disabled) |
| Relay Output | SPDT Imax = 2A res. / Vmax = 50 V |
| Alarms Outputs (RA22 only) | SPDT Imax = 2A res. / Vmax = 50 V for every single threshold |
| RPM calibration | 00.01 - 39.99 (1 step = 0.01) 40 - 500 (1 step = 1) |
| Size DIM 43700 (mm) | 48 x 96 x 120 |