Tecfluid CIP II User Manual
Page 6

8. TECHNICAL
CHARACTERISTICS
8.1. Power supply
CR-2450 lithium battery
Nominal voltage:
3V
Capacity: 560
mAh
Power consumption:
8 µA
8.2. Totalizer Counter
N. of digits:
7
Size of the digit:
8 mm
Reset:
Cannot be reset
8.3. Partial Counter
N. of digits:
5
Size of the digit:
6 mm
Reset:
By means of push button or magnet.
8.4. General characteristics
Ingress protection:
IP65
Ambient temperature range:
0 … +60 ºC
8.5. Input terminals for CIP II for local mounting
Terminal n. COVOL Turbine
1
Common
Ground
2
Live
Live
3
—
Live
Input characteristics
8.5.1. COVOL
This input is designed for a potential free contact between terminals 1 & 2 of the
connector. Terminal 1 is connected to the common of the instrument. This input
has a 1 MΩ pull-up resistor connected to terminal 1 and to the 3,3 V power supply.
The input has a hysteresis with the switching points situated at about 1 V & 2,1 V.
If an open collector transistor is to be used as the switching element instead of a
COVOL, then the aforementioned parameters must be taken into account.
Due to the presence of a filter to avoid the effects of contact bounce, the maximum
pulse frequency for the COVOL input is 300 Hz.
The minimum input frequency is 0.06 Hz
1 M
2
1
+3.3V
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