Tecfluid CIP II - 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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