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Navman Diesel Fuel Flow Sensors Manual

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Diesel fuel flow sensor kit Installation and Operation Manual
NAVMAN
The Navman diesel fuel flow sensor kit
measures the fuel consumption and RPM of
your diesel engined boat. But that is a gross
understatement of the capabilities of this
powerful diagnostic tool. This manual is written
to help you understand the many functions the
system can perform, and to help you interpret
the numbers it can provide. We also give some
basic information on some of the factors which
can influence boat performance, and what the
various readings from the sensors can reveal
about your boat. Hopefully, by understanding
more, you will no longer think of the engine as
just a noisy and expensive mystery.
In the end we should be able to help you make
your boating experience more relaxing, safer,
more economical and better informed.
1 Introduction
1-1 Diesel fuel flow sensor features
A positive displacement flowmeter, with
one moving internal part - there are no
fine pointed shafts and jewelled bearings
to get worn or hammered by diesel
pulsing.
Diecast aluminium housing.
A direct flow bypass valve, to take the
sensor out of the fuel line if required.
Low pressure drop across the sensor.
Simple, in-line installation, much like a
primary fuel filter.
The inlet and outlet ports have a
commonly-available thread: a ¼ NPT
parallel female thread on sensor is used
with a ¼ NPT taper male thread on the
fitting.
No restrictions on pipe geometry on entry
or exit from sensor.
Supplied with temporary straight through
pipes to make installation safer.
Factory tested and calibrated - sensors
This manual describes:
How to install a diesel fuel flow sensor kit
onto a diesel engine (sections 6 and 7).
How to understand and interpret the fuel
sensor readings (sections 2 and 3).
How to use the fuel flow readings to
understand and optimise your propeller
and engine performance (sections 4 and
5).
Note that this fuel flow sensor kit does not
have a display. The kit must be installed with a
Navman marine instrument to display the fuel
readings, such as the DIESEL 3200. A second
sensor kit can be fitted for twin engine boats.
It is vital to read this document and the Navman
display instrument’s installation and operation
manual before installing or using this kit.
do not normally require calibrating again.
Each engine is fitted with two fuel flow sensors.
One sensor, in the the fuel supply line measures
flow from tank to engine. The other sensor, in
the fuel return line measures flow from the
engine back to the tank.
The flow sensor system calculates the engine
consumption from the supply and return flow
rates. It compensates for:
Reverse flow pulsing from diaphragm lift
pumps.
Different fuel temperatures in the supply
and return lines - as fuel heats up it
expands and its viscosity changes
The flow characteristics of the sensors.
The system also has a tachometer to measure
the engine RPM with digital accuracy.
The system reports the fuel flow, total fuel
consumed and engine RPM over a serial digital
information link to the Navman instrument to
display the fuel data.
… 6 …


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Others manual(s) of Navman Diesel Fuel Flow Sensors

Navman Diesel Fuel Flow Sensors User Manual - German - 34 pages

Navman Diesel Fuel Flow Sensors User Manual - Dutch - 32 pages


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