Publicidad
V9682
2
A. Changeable fittings
1
˝
BSP shown
⁄ 2
B. Options
1
˝
C.
BSP Female
⁄ 4
3
˝
D.
BSP Female
⁄ 4
E. Extra flow ranges are possible
by inserting a ranging jet
under the pipe adaptor
Flow range
Orifice Dia.
3 to 30 l/min
No jet
1.5 to 15 l/min
6mm
0.6 to 6 l/min
4mm
0.25 to 2.5 l/min
2.5mm
0.1 to 1 l/min
1.5mm
General
This sight flow indicator has been designed for use with a range of
different liquids up to a maximum temperature of 100°C. Intended for
sight flow indication only (flow/no flow indication), the unit is supplied
in modular format enabling the same body to be used irrespective of
flow range or pipe connection. The body (RS stock no. 192-244) is
supplied complete with four flow range jets enabling the unit to be used
over five different flow ranges. Three sizes of pipe fitting (1/4", 1/2",
3/4" BSP female) are available for use with the body.
Installation
Before installation, check the free running of the indicator by blowing
through it - DO NOT USE AN AIRLINE. Confirm flow range required
and select ranging jet (supplied with flow indicator body) if necessary.
Confirm correct size of pipe fittings required. Where applicable, insert
range jet into flow body under inlet pipe fitting. Insert pipe fitting into
flow body ensuring correct seating of 'O' ring seal (and range jet if
fitted). Insert locating pin (supplied with flow indicator body).
2
45,0mm
B
C
D
A. Austauschbare Anschlüsse
1 ⁄
˝
BSP hier
2
B. Optionen
1
˝
C.
BSP Innengewinde
⁄ 4
3
˝
D.
BSP Innengewinde
⁄ 4
E. Weitere Durchflußbereiche
sind möglich, indem eine
Bereichsdüse unter dem
Rohradapter eingesetzt wird.
Durchfluß-
Öffnungs-
bereich
durchmesser
3 bis 30 l/min
Ohne Düse
1,5 bis 15 l/min
6mm
0,6 bis 6 l/min
4mm
0,25 bis 2,5 l/min
2,5mm
0,1 bis 1 l/min
1,5mm
RS Stock No.
192-244
A
80,0mm
50,0mm
50,0mm
E
A. Mostrado con conexiones
1
˝
intercambiables BSP de
⁄ 2
B. Opciones
1
˝
C. Hembra BSP de
⁄ 4
3
˝
D. Hembra BSP de
⁄ 4
E. Son posibles rangos de flujo
adicionales insertando una
boquilla de rango bajo el
adaptador del tubo
Caudal
Diámetro
del orificio
3 a 30 l/min.
Sin boquilla
1,5 a 15 l/min.
6 mm
0,6 a 6 l/min.
4 mm
0,25 a 2,5 l/min.
2,5 mm
0,1 a 1 l/min.
1,5 mm
Considerations
All pumps cause pulsations in the fluid, centrifugal pumps have
probably the lowest disturbance, and reciprocating pumps are largest.
With a centrifugal pump, the pulsations reduce after a fairly short pipe
run so if the flow sensor is positioned as far from the pump as possible,
the effects will be minimised. With reciprocating pumps more positive
isolation is desirable and a pulse damper or accumulator is probably
required.
Viscosity effects: all turbine transducers are effected by viscosity and
where possible the viscosity (temperature) of the liquid should be kept
fairly constant. Viscous drag causes the turbine to be slowed down
quicker at the lower flows, as viscosity increases so does the threshold
to operation.
All flow sensors should only be installed with the following in mind:
bends, valves, flow regulators, tee junctions and other fittings which
cause the flow to travel faster at one side of the pipe relative to the
other.
This asymmetry in the flow can seriously affect the
performance, and the disturbance should be as far removed from the
sensor as possible and if at all practical, put after the flow sensor. In
all cases, an 80 mesh filter should be fitted upstream of the flow
sensor.
1 ⁄
˝
A. Raccordi cambiabili
BSP
2
illustrato
B. Opzioni
1
˝
C.
BSP femmina
⁄ 4
3
˝
D.
BSP femmina
⁄ 4
E. Sono possibili ulteriori gamme
di flusso inserendo un getto
corrispondente sotto
l'adattatore del tubo
Gamma di
Diam.
flusso
orifizion
Da 3 a 30 l/min
Nessun getto
Da 1,5 a 15 l/min
6mm
Da 0,6 a 6 l/min
4mm
Da 0,25 a 2,5 l/min
2,5mm
1,5mm
Da 0,1 a 1 l/min
Publicidad
