Titan Metraflow 240-020, Инструкция по эксплуатации

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©Titan Enterprises Ltd 2018 www.flowmeters.co.uk MetraflowManual_v1219
Example wiring for pulse output:
PULSE per: Enter the number of pulses per unit volume required. This figure can be adjusted to suit
the application and the flow range required from the meter.
The maximum output frequency is 10 kHz. So care must be taken to ensure that this pulse rate is not
exceeded.
E.g. 5 L/Min at 10 Kilohertz equals (10,000 x 60)/5 = 120,000.Therefore 120,000 pulses per litre is the
maximum resolution for 5 litres per minute assuming maximum frequency output. If the meter is being
used up to 1 L/Min the pulse output and so resolution could be increased to five times this, 600,000P/L.
It is possible to send a test signal at varying Hz for each of the pulse output PIN/Wires. Clicking
opens a menu where you can choose a rate of Hz of pulse outputs which will be automatically sent for
approximately 30 seconds.
NOTE:
ABOVE 1KHZ IT IS RECOMMENDED THAT THE SYSTEM WIRING IS REVIEWED TO
ENSURE IT IS ADEQUATE FOR THE SAMPLING RATE.
Flow alarm outputs
Single flow alarm: Checking this option opens up input boxes for
THRESHOLD; LATCHING and INVERT.
Set the Threshold to the flow value you require the transistor to operate.
The logic of operation can be adjusted with the Invert check box (see
left).