Kipp&Zonen COMBILOG Data Logger - Manual (Page 49)

Frequency Measurement
Figure 5.11 Frequency measurement
I/O 1
time base
TB TB TB
counting
1 2 3 1 2 3 1 2 3 1
measurand
(TB = 5 sec)
signal diagram:
- high level:
TB TB TB
1 2 1 1 2
- low level:
0,6 Hz 0,6 Hz 0,6 Hz
0,4 Hz 0,2 Hz 0,4 Hz
pulse
I/O 1
time base
counting
measurand
(TB = 5 sec)
pulse
Hardware Manual COMBILOG 1022
signal diagram:
49
Anschlussschema Schaltung
0V
I/O
+ 10V .. 30V f
f
Connection scheme Circuit