Flomec Oval Gear, Руководство по эксплуатации

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2.2.4
Quadrature Pulse Outputs
The Quadrature Pulse (QP) output is an optional type of output that provides two
independent Hall Effect outputs that are electrically 90 degrees out of phase. When
installing a meter with Quadrature Pulse output it is important to remember that each
output terminal is independent, and as such each will require its own pull-up resistor as
described in Section 2.2.2 above.
2.3 Making Electrical Connections
To gain access to the electrical connections on a meter without an instrument, you must
first remove the terminal cover by removing the four cover screws with a 4mm Hex Key
(Allen Key). When removing the terminal cover, take care not to damage or lose the O-Ring.
Standard Pulse Output Boards utilise a pluggable terminal block which can be removed for
fitment of wires. Reed Only Pulse Output Boards use Cage Clamp terminal blocks which
require insertion of a screw driver into the wedging slot as show below. All wiring requires
a 0.1” (2.5mm) wide Flat Blade Screw Driver (or smaller) .
For meters fitted with an integral instrument refer to the instruments instruction manual
that accompanied the meter.
When refitting a terminal cover for a Flameproof (EXd) flowmeter the terminal cover
screws must be tightened to a torque of 2.95ft-lb (4Nm). See section 2.7.3 for more
details.
Connecting wiring to Reed Only Pulse Output Boards