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7
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2-I.
Typical Turbine Meter Installation
METER RUN
V3 = BYPASS VALVE
S = STRAINER
FS = FLOW STRAIGHTENER
TFM = TURBINE FLOWMETER
Figure
Vl, V2 = BLOCKING VALVE
v2
t
TFM
I
FS
2.5V.
Slowly turn the SENSITIVITY threshold control counter-clockwise until in-
dication stops.
2.3
GENERAL
Proper application of the turbine flowmeter requires a suitable piping installa-
tion in order to achieve accurate and reliable operation. Refer to Figure 2-l.
BYPASS RUN
2.2
OPERATION
Perform any purging of piping with spool piece in place. Once completed,
install the flowmeter and connect cabling to pickup coil.
With the FTB500 Mini Flow Signal Conditioner properly installed and
calibrated, verify the following performance.
With the power ON and no flow through the flowmeter, there should be no
pulse output from the unit. To verify this, connect either a digital Frequen-
cy Counter or an AC voltmeter.
If using a Digital Frequency Counter, the display should display zero. If some
other constant or varying indication occurs, noise may be present.
Slowly turn the SENSITIVITY threshold control counter-clockwise until in-
dication stops.
NOTE
Turning the sensitivity control FULLY counter-clockwise will
render the outputs inoperative. Turn potentiometer clockwise to
return to normal operation.
If using an AC voltmeter, the meter should be at zera If noise is present, the
voltmeter will deflect and swing from 0 to
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