Agromehanika AGS 2500 EN-HP, Инструкция по эксплуатации

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AGS 2500/3000 EN-HP USER MANUAL – rev.2016/12
page
99
Figure 59 FLOW METER
12.3.3 Flow meter
Flow sensor forwards impulses of flow gauge to
AG-TRONIK. Connections are of size R 1
1
/
4
".
Measuring range is 10-100 l/min. Flow gauge cable
is connected to electrical connection cabinet. On
the gauge is a card with written flow constant. You
can also measure flow constant. It is recommended
to measure flow constant for chemical substances,
density of which greatly differs from density of
water. Measurement or determining flow constant
is described in chapter “FLOW CONSTANT”.
As standard, POLMAC flow gauge is installed.
Flow measuring is performed by a turbine, which
is installed in flow gauge housing. Gauge turbine is
sensitive to spray residues, which remain in flow
gauge after spraying. Therefore, make sure that the
flow gauge is cleaned internally with clean water
after each spraying.
.
If there are greater deviations of flow constant
from planned value, the cause can be incorrect
operation of flow sensor. In this case, thoroughly
clean the sensor, especially in the sensor turbine
area. Before cleaning, make sure that there is no
water or chemical substance inside the regulator.
Unscrew flow sensor nut and use air or running
water to clean sensor turbine. When you finished
cleaning, replace the sensor to original position.
Instead of flow gauge with turbine, electromagnetic flow gauge can be installed, which has no
rotating parts inside the flow gauge and is therefore not sensitive to dirt and sand. Using
electromagnetic flow gauge is recommended on areas, where there is a lot of fine sand in
clean water, which is used for spraying. The downside of the gauge is change of flow
constant, when using copper accessories or accessories with different conductivity than water.
Such accessories require calibration of flow gauge. Connection of electromagnetic gauge to
electrical cabinet is different than standard connection. Before installing such gauge in
pressure regulator, consult technical staff of Agromehanika.