Yokogawa 202 Field Mounting Rate Totalizer Manuel d'utilisateur télécharger pdf (Page 32)

Flowmeter Input

28

1. Squarewave, CMOS or Pulse

2. Open Collector

With 15µA/150µA internal pull up current

3. Reed Switch - Battery Powered

With 15µA internal pull up current

Note: For a switch or reed input with contact bounce link DBL can be switched "on". This will

eliminate the effect of switch bounce while limiting the input frequency to 200Hz.

Link Settings

Link 1

Link 2

Link 3

COIL PULSE

DB DBH

NPS

Switching threshold voltage is 1.3 volts.

Link Settings

Link 1

Link 2

Link 3

COIL PULSE

DBL DBH

NPS

Link Settings

Link 1

Link 2

Link 3

COIL PULSE

DBL DBH

NPS

eg. Positive displacement flowmeters

with reed switch outputs.

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