Badger Meter Registers - Manual (Page 2)

2
PREFACE
SCOPE OF THE MANUAL
This manual contains information concerning the instal-
lation, operation and maintenance of Badger's Electric
Contracting Register, Model EC-A. To ensure efficient
operation of the EC-A, the instruction given in this
manual should be thoroughly read and understood.
Retain the manual in a location where it is readily
available for reference.
CHANGES IN THE MANUAL
Changes or additions to the original edition of this
manual will be covered by a "CHANGE NOTICE"
supplied with the manual. The change notice will ex-
plain any differences between the product received and
the EC-A described in this manual.
DESCRIPTION
Badger's Electric Contacting Register, adjustable Model
EC-A, provides an electric pulse output for a given
quantity of liquid passing through a disc, turbo or other
type of meter. The contactor, or lower section of the EC-
A, contains a gear train assembly, cam-operated roller-
level switch and appropriate change gears. The top
portion consists of a register with nonreset totalizer and
a hinged cover.
Contact rates can be changed in the field with change
gears and/or one of three different gear trains. To make
sure you obtain the correct parts, contact Badger
Meter, Inc., Customer Service, and provide the follow-
ing information from EC-A nameplate:
- Existing pulse rate.
- Part number.
- Gear driver/driven.
NOTE: Normally closed contact should be used for
most applications, and especially to obtain shortest
contact duration.
OPERATION
The Model EC-A Electric Contacting Register is mounted
on a meter equipped with proper change gears between
meter and register. Water or other liquid flowing through
SPECIFICATIONS
Totalizer - Nonreset with six number wheels plus
stationary zeros corresponding to test circle.
Units of Measure - Gallons...cubic feet...cubic
meters...liters...pounds.
Switch Type - Single-pole, double-throw...N.O. or N.C.
connections...roller-lever, cam-operated.
Switch Ratings - 10 amps and 1/4 hp, 125 or 250 volts
AC...1/2 amp, 125 volts DC...1/4 amp, 250 volts DC.
Contact Rates - Adjustable in field with change gears
and/or different gear trains.
MAINTENANCE AND SERVICING
For periodic inspection or when operation of the EC-A
indicates a need for servicing, refer to adjoining page for
identification of replacement parts and to back cover for
ordering information. If satisfactory servicing cannot be
performed, contact Badger Meter, Inc., Customer Ser-
vice.
A. CHANGING GEAR TRAIN ASSEMBLY
1. Disconnect electric power at junction box.
2. Loosen and remove two register cover screws
(See item 2 in illustrated parts listed on
facing page.)
3. Lift and remove register hood, gasket and
register assembly (items 1, 4 and 5) from
contactor housing.
the meter causes a cam in the contactor section to
rotate. The cam operates a single-pole, double-throw
switch. When connected to a suitable power supply,
the register will provide a pulse output corresponding to
a predetermined quantity of liquid. If desired, the
pulses can be used to actuate a relay which, in turn, will
operate other equipment. In a typical application,
pulses from the EC-A would be transmitted to a
chemical feed pump for boiler makeup water or for
cooling towers.
Figure 2. Electrical Contactor Section
DRIVEN
CHANGE
GEAR
DRIVER
CHANGE
GEAR
BOTTOM
PLATE
ASSEMBLY
W/ GEAR TRAIN
CAM
ROLLER LEVEL GREEN WIRE
(GROUND)
SWITCH
(SPDT)
RED WIRE
BLUE WIRE
BLACK WIRE