Tecfluid CIP II Manual de usuario descargar pdf (Pagina 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 M 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

+3.3V

1 2 3 4 5 6 7 8

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Tecfluid CIP II Manual de usuario Pagina 6