Chauvin Arnoux C.A 25 Mode D'emploi page 94

- Event counter function
Measurement range
Frequency counting range
counting accuracy
SPECIFICATIONS OF THE SENSORS
Measurement conditions
- optical sensor
Reflective surface : from 10 to 90% of the surface of the sensor.
Surface of the target : in the absence of reflective scotch, the instrument must not
take measurements.
Measurement distance : from 1 to 50 cm. The maximum distance is given for a
reflective "Scotchlite" tape with a minimum surface of 10 cm².
Measurement angle : ± 15 % from the perpendicular of the reflective surface
- mechanical adaptor
Pressure exerted on the moving part: between 2 and 40 N.
Maximum speed : 10000 rpm.
Service life > 1000 hours at 3000 rpm at a pressure of 20 N.
Variation in the operating range
Distortion
magnitude
Ambient
temperature
Humidity
Power supply
Limit of the
application
range
Any measured
- 10 + 70°C
Any measured
10 % to 90 % HR
without condens
.
Any measured
7 to 10 V
from 0 to 99 999 events
from 1 Hz to 10 k Hz
from 0.1 Hz to 10 k Hz with
the external input on the
extended range
± 1 event
Distorted
magnitude
magnitude
magnitude
magnitude
91
Typical
variation variation
± 30ppm ± 50ppm
-5
<1.10
significant
significant
Max
not
not