Technical Data; Troubleshooting - Piusi K700 Serie Guia De Inicio Rapido

A INTRODUCTION
K200 is a meter developed to satisfy the
requirements for the control, measurement,
dispensing and transfer of lubricating oils
and fuels at low flow rates. The measuring
principle with modular oval gear provides
high accuracy for a whole range of flow
rates together with reduced loss of head.
The fluid flowing through the equipment
forces the gears to rotate, and their rotation
transfers constant "units of fluid".
The precise amount of fluid dispensed is
determined by counting the number of gear
revolutions and therefore the "units of fluids"
transferred.
A magnetic coupling between the magnets
installed inside the gears and the magnetic
switch located outside the measuring
chamber guarantees the sealing of the
measuring chamber and transmits the
pulses generated by the gear rotation to a
microprocessor.
pulse
The equipment is calibrated by means of the external pulse receiver.
B

TECHNICAL DATA

Specification
Resolution
Flow Rates Range
Working Pressure
Bursting Pressure
Storage Temperature
Storage Humidity
Working Temperature
Loss of Head (maximum flow rate with diesel fuel)
Compatible Fluids
Viscosity Range
Accuracy (within flow rate range)
Repetitiveness
Weight
Input and Output Opening Thread
Pulse Type
Max. Current
Max. Voltage
Pulses per litre (approx.)
C INSTALLATION
The K700 model is designed for stationary
installation on a fuel supply line. Do not use conical
connections, which could damage the housing of
the meter or the connection flange. The position of
the filter determines the inlet direction of the flow.
The Pulser version is to be connected by means of
two wires according to the electrical specifications
shown in the diagram aside:
ENGLISH
The meter housing is made of aluminium.
The meter is provided with threaded and
aligned input and output openings to allow
easy installation on the tubing. Diameter and
thread vary according to the model.
A mesh filter is installed at the input opening
and can be accessed from the outside by
means of the cover provided to protect the
meter from any dirt present in the system.
The PULSER version is a pulse emitter (reed
bulb) which turns the magnetic field
variations generated by the rotation of the
gears into electrical impulses to be sent to
an external receiver connected as shown in
the attached diagram. The pulser needs no
separate electric line, as it is powered
directly through the connection with the
receiver.
The type of pulse emitted is represented by
a square wave generated by voltage
variation, as shown in the following diagram:
+V
0
Scale
L/pulse
L/h
bar
bar
°C - 20 - + 70
R.H.
°C - 10 - + 60
bar
Diesel Fuel, gasoline
cSt
Kg
Clean contact
mA
Volt 28 V ac/dc
No.
D MAINTENANCE
The K700 model has been designed to require minimum maintenance. The only
maintenance operations required are:
Cleaning of the Measuring
Chamber
Cleaning of the Filter
CLEANING THE MEASURING CHAMBER
The measuring chamber can be cleaned without removing the equipment from the
pipeline or the nozzle on which it is installed.
WARNING
Always ensure liquid is drained from the meter before cleaning.
To clean the chamber, proceed as follows (refer to the positions in the spare parts list):
• Unscrew the 6 fastening screws on the
upper cover (pos.15).
• Remove the cover (pos. 11) and the
O-ring (pos. 22).
• Remove the 6 double-height oval gears
(pos. 14) and the 2 single-height oval
gears (pos.13).
• Clean as needed. To do this, use a
brush or a pointed object, such as a
small screwdriver.
WARNING
Reassemble the gears following the assembly diagram (paragraph F).
Value
Only one of the two modularly coupled gears is equipped with magnets. Make sure
0.066
the oval gear on the top is installed with the 2 magnets (pos.23) fastened to the gear.
25 - 250
20
60
CLEANING THE FILTER
The K700 filter can be cleaned without removing the equipment from the pipeline or the
95%
nozzle on which it is installed.
WARNING
0.4
Always ensure liquid is drained from the meter before cleaning.
2 - 5.35
To clean the filter, proceed as follows
± 0.5 % (refer to the positions in the spare parts list):
• Unscrew the 4 fastening screws on the
0.2 %
lower cover (pos. 18).
1
• Remove the cover (pos. 16) and the
2" Gas
E

TROUBLESHOOTING

100 mA
Problem
15
Inaccuracy
V max
28 V
Ac/Dc
High loss of head
I max
100 mA
Does not count
ENGLISH
Might be necessary owing to the particular kind of
fluid dispensed
To be performed periodically and according to the
fluid dispensed
• Be careful not to damage the housing
or the gears.
• Carry out the reverse procedure to
reassemble the equipment. For an
easier installation, install the first gear
onto the second gear with the major
axis turned at 90° with respect to the
first gear.
• Check free rotation of the gears before
closing the cover.
O-ring (pos. 17).
• Extract the filter (pos. 20).
• Clean the filter with compressed air.
• Carry out the reverse procedure to
reassemble the filter.
Possible Cause
Calibrate following the appropriate
procedure
Incorrect calibration
Calibrate the equipment by means of
the impulse receiver
Working flow rate outside Reduce or increase the flow rate until it
the indicated range is within the indicated range
Dirty filters Clean filters
Gears clogged Clean measurement chamber
Incorrect installation of Check position of the gear with the
the gears magnet
Gears clogged Replace reed bulb
Solution