TP0003B
BM METER
Chap 2
Page 7
TECHNICAL DESCRIPTION
should be operated with 100 or 120 mesh baskets for an initial period. As a general indication,
MINIMUM mesh sizes recommended are:
•
Fuel Oil -- 40 mesh.
•
Gas Oils, Kerosene and Gasolene -- 80 mesh.
15
VOLUME/WEIGHT ADAPTOR
15.1
The Volume/Weight Unit is designed to automatically show counter readout in weight, once the
specific gravity of the product being metered has been correctly set on the unit.
15.2
The unit, which is self contained, is sandwiched between the calibrating mechanism and the
Mechanical Counter. On the front of the unit is a specific gravity indicator dial and setting knob. Total
uncorrected volume is recorded on a totaliser which can be reset to zero by a knob on the left hand
side of the unit.
16
AIR SEPARATOR
16.1
The Air Separator is designed to prevent air/vapours trapped upstream in the system from reaching
the meter.
16.2
The unit consists of a mild steel cylindrical tank mounted horizontally on two flanged support
brackets, with an automatic float operated vent valve fitted along its top centreline.
16.3
The Air Separator is available in four bore sizes, 2.5”, 3”, 4” and 6”.
17
FLOW GOVERNOR
17.1
In installations where more than one bulkmeter is supplied from a common pipeline, the rate of flow is
liable to exceed the maximum capacity of any individual bulkmeter. When supply is shut off to some
of these, the meters remaining in operation may be subjected to excessive flow rates. The Flow
Governor protects bulkmeters from possible damage from overload by limiting the maximum rate of
flow, irrespective of pressure changes.
18
EXTENDED COUNTER DRIVE AND SWIVEL.
18.1
Designed to raise the level of the mechanical counter to any convenient height up to 3.8 metres (12.5
ft) above the bulkmeter to suit the particular loading installation. The mechanical counter may be
bolted to the top of the extension, or a swivel head can be fitted whereby the counter can be turned in
any direction to facilitate reading.
19
TROLLEYS
19.1
All Avery--Hardoll brand bulkmeters can be supplied mounted on trolleys for use where space or other
operational requirements prevent the use of permanently installed meters.
19.2
Typical applications are:
•
Quayside bunkering.
•
Loading and offloading rail tank wagons and fuelling diesel locomotives.
•
Additive injection between aircraft refueller and aircraft.
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