Eagle DCS302 User Manual

DCS302

DUAL CYLINDER SCALE

INSTALLATION & OPERATION

MANUAL

Eagle Microsystems, Inc. 366 Circle of Progress Pottstown, PA 19464

www.eaglemicrosystems.com

phone [phone] : fax [phone]

DCS302 GENERAL INFORMATION

GENERAL

The DCS302 is a dual cylinder scale designed specifically for the water and
wastewater industry. The scale base and weighing surfaces are made of Type 2
PVC plastic and are guaranteed for five years against environmental damage.
All mechanical parts, wherever possible, are made of stainless steel or protected
with a durable chemical-resistant powder finish.

The DCS302 can accommodate any cylinder that does not exceed 12” diameter
and 150 lbs. net weight.

SPECIFICATIONS

Accuracy: …….………………………………………………………… +/- 0.25% FS
Resolution: …………………………………………………………….. 0.5 lb.
Scale Readability: ……………………………………………………… 0.1 lb.
Scale capacity: ..………………………………………………………. 300 lbs.
Safe overload capacity: ……………………………………………….. 400 lbs.

FEATURES

• Simultaneously weighs two cylinders independently and displays the net weight

on separate digital indicators.

• Wall mounting bracket and safety chains are optionally available. These can
adapt to different cylinder sizes.

• All scales are factory assembled, tested and calibrated.

ASSEMBLY

The DCS302 scale base is fully assembled at the factory. Installation and
testing procedures later in this manual.

OPERATION

See Instruction Manual EI-2000 for scale setup and operation.

WARRANTY

Eagle Microsystems warrants the DCS302 scale base to be free from all defects
in material and workmanship. Any parts that fail because of defective
Workmanship or material within five (5) years of date of shipment will be
replaced. The warranty does not include miss use, negligence or modifications.
Eagle Microsystems shall not be liable for transportation or installation charges,
or any other expenses incurred by the customer.

INSTRUCTIONS

DCS302 DUAL CYLINDER LOAD CELL SCALE

1. Before placing scale in operation remove the six (6) plastic stops and the
aluminum shipping plate located on the underside of the scale.

2. Determine service location of scale and position base 2 1/2-inches or
more from the wall.

3. Anchor scale base securely to smooth, level floor using 3/8-inch anchor
bolts (not supplied) through the four (4) 1/2-inch diameter holes in the corners of
the scale base. It is recommended that the floor be level to within 0.5 degree for
optimal performance.

4. Mount NEMA 4X EI-2000 Dual Channel Digital Display Instrument to a
suitable and convenient wall surface. Remove instrument cover and mount
instrument to the wall with #10 screws or suitably sized masonry or hollow wall
anchors, as applicable. The instrument case has four (4) through holes, as
shown in the Operating Manual, located on 5 3/8-inch centers horizontally and 5
5/8-inch centers vertically.

5. Route the cable provided, and factory terminated at the scale, to the
display instrument. Make wiring connections as shown on pages 13 and 14 of
the "EI-2000 Dual Channel Weight & Level Display/Transmitter Operating
Manual" for the "DCS302 Dual Cylinder Scale".

6. Follow instructions in the Operating Manual for startup and calibration of
the EI-2000. The scale base is factory calibrated using known weights and is
ready for use when received.

CHLORINE

30"

SCALE INSTALLATION

C

L

RECOMMENDED

ELEVATION 40"

1 5/8"

5 5/8"

WALL

MINIMUM WALL

CLEARANCE

2 1/2"

30"

31 1/2"

18"

16"

1/2" CLR. HOLE

4 PLCS.

DCS302 FOOT PRINT

30"

15FT. 6 CONDUCTOR

CABLE

16"

EI2000 INDICATOR

Wall Mounting Dimensions

EI-2000

6 5/8"

ctr. to ctr. mounting holes

5 5/8"

5 3/8"
ctr. to ctr. mounting holes

7 5/8"

Enclosure conforms to: NEMA 4X

3 3/16"

PC BOARD CONNECTIONS

J6

IN
T

R

RS232

C
B

A

RS485

SH

+

–E
–S

CH2

+S

RIGHT SCALE

+E

J5

SH
–E
–S

CH1

+S

LEFT SCALE

1

4

3

2

4

8

3

7

2

6

1

5

+E

J4

–R

CH2

CH1

T1

J3

J2

+R
–L
+L

4-20mA OUT

+

CH2

R
+

CH1

L

H
N

G

RELAYS

J1 POWER

U6

C20

C21

R11
R12

COLOR

DESCRIPTION

300476

PIN

REV 0042

U5

EI-2000

CONNECTOR FUNCTION

GROUND

NEUTRAL

HOT

GNH

J1

J4

POWER IN

120 VAC, 50-60Hz

RED

WHITE

GREEN

BLACK

YEL

+EXCITATION

+ SIGNAL

– SIGNAL

–EXCITATION

SHIELD

–S

–E

+E

+S

SH+E+S

LEFT SCALE INPUT

RED

WHITE

GREEN

BLACK

YEL

+EXCITATION

+ SIGNAL

– SIGNAL

–EXCITATION

SHIELD

-S

–E

SH

J5

RIGHT SCALE INPUT

LEFT+

LEFT–

RIGHT +

RIGHT –

L–R+R–

L+

J3

OUTPUT

4-20 mA ANALOG

LEFT ALARM RLY

RT ALARM RLY

RS485 "A"

RS485 "B"

GROUND

RS232 RCV

L

RABGR

J2

J6

SERIAL PORT OPTION

ALARM RELAY OPTION

RS232 XMT

T

IN

T
R
C

B
A

YELLOW

BLACK
WHITE
GREEN

RED

YELLOW

BLACK

WHITE

GREEN
RED

RIGHT NEG.
RIGHT POS.
LEFT NEG.
LEFT POS.

Com.

RS232

Mating Half P6

RS485

Mating Half P5

Load Cell Connector

(Use for single scale)

Mating Half P4

Load Cell Connector

CONNECTOR PLUGS

Output P3

Analog 4 - 20 mA

ZERO

SELECT

TARE

LO LEV

REMAIN

GROSS

ZERO

SELECT

EI2000 TRANSMITTER

EI-2000

AC

CHLORINE

15' CABLE

RIGHT
RIGHT
LEFT
LEFT

HOT

NEUTRAL
GROUND

P2

Alarm Contacts

P1

AC Power

TEST PROCEDURES

DCS302 DUAL CYLINDER LOAD CELL SCALE

1. After assembly a known weight of 250 lbs. is alternately placed on each
platform and removed two times in order to flex the components of the scale
base.

2. Upon loading the scale for the third time, the display of the EI-2000
indicator allowed to stabilize. The display value is noted and, in Mode 3 ­Automatic Operation, the display is adjusted to read the known weight using the
Up/Down arrow keys. Once the Gross Weight display is set to the known 250 lbs.
the SEL PB is pressed and the display will change to Weight Remaining and
show 150 lbs. The weights are removed. Readout should return to zero.

3. The known weight is reapplied once more. The scale should now read
Gross Weight of 250 lbs +/- 3 counts. (A count is the smallest displayed
increment, i.e., if counting by 0.5 lb. increments a count represents 0.5 lb.). The
weight is removed and the display should read zero. If so test is concluded and
scale is ready for packing and shipment.

4. If readout weight is outside tolerance, platforms are adjusted and test is
repeated.

DCS302

DUAL CYLINDER SCALE BASE

14

48

49

(Not Shown)

12

SPIDER DRAWING

13

15

10

1

9

2

3

4

8

7

5

6

SPIDER DRAWING

DISK

41

37

38

36

13

37

41

43

44

42

46

41

40

39

37

BASE

38

44

45

DMS/DCS

SPIDER ASSEMBLY

DRAWING KEY

ITEM DESCRIPTION P/N

1 Locknut 612541
2 Adjusting bolt, ss 400177
3 Pin, spring (split), ss, type 420 640136
4 Chain, sash, ss, 1/0 100356
5 Chain clip 400182
6 Enclosure, FG 5x5x3 630604
7 Bracket, cell, PVC-1 400244
8 Load cell, 40#, 14”, 350 ohm 500317
9 Term. block, 6 ckt, screw term. 532061
10 Lid, enclosure, FG Part of Item 6 above
11 Not used --------­12 Screw, 10B x 5/8 Self tap, ss 611060
13 Pivot screw 400229
14 Disc 400178
15 Deck 400178
16-35 Not used ---------­36 Disc washer 400154
37 Perimeter flexure 400143
38 Perimeter clamp 400144
39 Center clamp 400145
40 Center flexure 400142
41 Short lever 400160
42 Long lever 400141
43 Screw, 6A-3/8, self tap hex 610684
44 Screw, 10-24 x 3/8 Hex head 611061
45 Screw, 10B-5/8 Self tap Phillips 611060
46 Screw, 10A-3/8 Self tap hex 611028
47 Bolt, 10-32 x 3 1/4 611013