Edition du 24/02/09
/ 17
U508218-e Revision : 2
4
Figure 1. External View of Series 7887 Meter Register.
2. SERIES 7887 DESCRIPTION
2.1. GENERAL.
1. Physical. The Series 7887 Meter Register,
Figure l, displays a running account, final total
and accumulated total of the quantity of liquid
product delivery. Contained in a 4" x 10" die
cast enclosure, individual delivery data is
displayed on five 3/4" high figures while
totalizer information is recorded on eight 1/8"
high figures. Reset of the Meter Register is
accomplished through a reset knob on the
right-hand side of the unit.
2. Operational. The Meter Register is operated
by a drive shaft connected to a group of gears
on the gear plate which converts the drive
revolutions to the appropriate ratio. The output
bevel gear of the group drives a bevel gear,
Figure 5, which is connected to the drive shaft
and clutch assembly. In rotating, this shaft
drives a gear on the clutch assembly which in
turn drives a gear on the right (unit) wheel
assembly. Revolutions are then accumulated
on the wheels. In addition, this rotating shaft
drives the bracket group connected to the
accumulative totalizer shaft, thus both displays
are driven from the same source, assuring
accurate recording of information. During the
reset operation, the clutch is disconnected
from the drive shaft, a shutter moves into place
covering the display wheels and reset fingers
engage heart-shaped cams on the individual
wheels to move them back to a zero position.
ln addition, a set of anti-topping fingers
engages the wheels to prevent jamming. At the
completion of reset, the display wheels will
read aIl zeros, and the shutter will rise to the
normal operating position. The clutch will
engage the drive shaft to transfer the
information from the next delivery. The totalizer
wheels will be unaffected by this reset
operation,
thug
displaying
an
accurate
measure of the accumulated totals of many
deliveries.
2.2. SPECIFICATIONS.
Specifications listed are standard unless
otherwise noted. Option al features are
available at additional cost.
Speed: 250 rpm.
Torque: Average running torque at room
temperature with 1:1 input: 4 oz-in. During
display wheel transfer from a119's to aIl O's,
the instantaneous peak torque may reach 40
oz-in.
Operating Temperature Range: -400 to
+71°C (-400 to +160°F).
Number of Figures: Meter Register: 5.
Accumulative Totalizer: 8
Size of Figures: Meter Register: 0.750" high x
0.400" wide (19.05 x 10.16 mm). Totalizer:
0.125" high x 0.078" wide (3.175 x 1.98 mm).
Colour of Figures: White on black, except
right-hand totalizer wheel which is black on
white when recording tenths of units, and white
on black when recording whole units.
Style of Figures: Veeder-Root/Cornell for
optimum read- ability.
Character Configuration :J:)-to 9 (options
available).
Reset: Single handle on register. Designed for
one-handed operation.
Mounting: Eight 1/4 x 28 tapped holes with
steel inserts on a 6.625" (168.28 mm)
diameter. Special adapters are available for
nearly ail meters.
Construction: Cover: cast aluminium. Case
and sub frame: cast Zamak. Wheels, pillions,
and clutch: acetal resin.
Gearing: 1:1 is standard. 1:1 through 42:1 are
available.
Lubrication: Periodic.
OPTIONS :
Non reset Pulser : Meter Register with Series
1871 or 7671 Pulse Transmitter.
