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SITRANS WW300 is designed for industrial applications such as mining, cement, chemical processing, pulp and paper, and other heavy-duty industries.

Field tested and proven in hundreds of applications, it enhances profitability by ensuring accuracy, enhancing blend consistency, reducing downtime, and improving accountability and record keeping. The unique weigh system reduces dead load and applies live load directly to load cells for accurate measurement. The dual load cells are externally mounted for easy access and maintenance.

It is available in a variety of lengths from 1.6 m (63 inch), belt widths from under 0.5 m (18 inch) to 1.8 m (72 inch), several different inlet configurations and materials of construction. It can be configured to suit various applications.

Standard components include CEMA C rated idlers, belt tracking rollers, hinged access panels on enclosed units, integral lifting points for easy installation, a belt scraper and plow for self-cleaning.

Обзор

SITRANS WW300 is a medium- to high-capacity weighfeeder used for macro ingredient additives.

Чертеж

SITRANS WW300 dimensions in mm (inch)

Особенности

  • Rugged, durable design for heavy-duty applications
  • Handles medium- to high-capacity loads
  • Standard mild steel open or enclosed construction
  • Heavy-duty 102 mm (4 inch) diameter idlers
  • Large 203 mm (8 inch) minimum diameter head and tail pulleys for maximum traction
  • Patented design
  • Easy to replace endless belt
  • Gravity tensioned belt cleaner
  • Fast installation, easy to clean and maintain
  • Outboard mounted load cells with protective cover

Схема подключения

SITRANS WW300 connections

Технические данные

 

Mode of operation

 

Measuring principle

Strain gauge load cells and digital speed sensor

Typical application

Industrial and process applications in feeding, blending or rationing in gypsum manufacturing

Measuring accuracy

 

Accuracy1)

± 0.5 % or better

Specified range

10 ... 100 % based on speed

Design rate range

4.5 ... 800 t/h (5 ... 880 STPH)

Max volumetric flow

1 284 m3/h (44 800 ft3/h)

Medium conditions

 

Operating temperature

-10 ... +55 °C (14 ... 131 °F)

Material

Mild steel with stainless steel [304 (1.4301) or 316 (1.4401)], bead blast finish (1 ... 6 μm, 40 ... 240 μin) or abrasion resistant contact parts optional

Load cells

 

Construction

17-4 PH (1.4568) stainless steel or nickel plated alloy steel

Degree of protection

  • Stainless steel: IP67
  • Nickel plated alloy steel: IP66

Excitation

10 V DC nominal, 15 V DC maximum

Output

2 mV/V

Non-linearity

± 0.02 % of rated output

Non-repeatability

± 0.01 % of rated output

Capacity

  • Stainless steel range: 25, 50, 100, 250, 500 lb
  • Nickel-plated range: 10, 15, 20, 30, 50, 75, 100 kg

Overload

150 % of rated capacity

Temperature

  • Operating range: -40 … +65 °C (-40 … +150 °F)
  • Compensated: -10 … +40 °C (15 … 105 °F)

Speed sensor

 

Optical encoder output

RS 422 (TTL) 5 V DC, 150 mA max. 500, 1 000, or 2 000 ppr

Temperature

-10 … +70 °C (14 … 158 °F)

Degree of protection

IP64

WS300 Output

See page 4/43 (optional)

C-flange mounted magnetic pulse generator output

Open collector, NPN, sinking output, max. 17 mA, 60 ppr

Temperature

-40 … +105 °C (-40 … +220 °F)

Degree of protection

IP67

Belt tracking switch

 

Aluminum spring rod (un-wired)

  • 1 NO, 1 NC switch blocks
  • Rated operating voltage 600 VAC max.

Temperature

-30 ... +85 °C (-22 ... +185 °F)

Degree of protection

IP67

Framework

  • Painted structural steel
  • Cantilevered design for easy belt replacement

Pulleys

200 mm (8 inch) minimum, 508 mm (20 inch) maximum, pulley diameter crowned with 6 mm (¼ inch) rubber lagging on drive pulley for maximum traction

Idlers

Heavy-duty 100 mm (4 inch) CEMA C with precision ground ball bearings and triple labyrinth seals for longer life, CEMA D,E IMPACT where required

Belt speed

0.005 ... 0.36 m/s (1 ... 70 fpm)

Bearings

4 bolt flange style

Belting

  • Black rubber, 150 ... 440 PIW 2­ ply vulcanized endless with 'B' section (standard)
  • Up to 127 mm (5 inch) corrugated sidewalls (optional)
  • Maximum rated material temperature
    of 107 °C (225 °F)
  • Butyl HT belt rated for max material
    temp of 204 °C (400 °F)
  • Nitrile belt rated for max material
    temp of 121 °C (250 °F)

Belt tension

  • Screw type, telescoper module with 150 mm (6 inch) minimum travel
  • Gravity tensioned self-steering belt tracker (optional)

Belt cleaning

  • Gravity tensioned UHMW blade at head pulley
  • Return plow at tail pulley

Drive motor

AC, TEFC, 10:1 CT inverter duty, drive motor with direct coupled flange mounted hollow bore KAF gear reducer, 1.2 service factor min.

Shipping weight

410 kg (900 lb) minimum

Approvals

  • CE on all electrical components
  • Hazardous approvals per configuration options.

Note: Weighfeeder as a whole is not approved for hazardous locations only electrical components.



1) Accuracy subject to: On factory approved installations, the weighfeeder system’s totalized weight will be within the specified accuracy when compared to a known weighed material test sample. The test rate must be within the specified range of the design capacity and held constant for the duration of the test. The minimum material test sample must be equivalent to a sample obtained at the test flow rate for three revolutions of the belt or at least ten minutes running time, whichever is greater. Accuracy subject to: On factory approved installations, the weighfeeder system’s totalized weight will be within the specified accuracy when compared to a known weighed material test sample. The test rate must be within the specified range of the design capacity and held constant for the duration of the test. The minimum material test sample must be equivalent to a sample obtained at the test flow rate for three revolutions of the belt or at least ten minutes running time, whichever is greater.

Pulley diameter

Shaft diameter

Bearing diameter

Telescoper stroke

Infeed length

Skirtboard height

8 inch

2 ... 15/16 inch

1 ... 15/16 inch

6 inch

16 inch

8 inch

10 inch

3 ... 7/16 inch

2 ... 7/16 inch

6 inch

24 inch

10 inch

12 inch

3 ... 15/16 inch

2 ... 15/16 inch

9 inch

30 inch

12 inch

14 inch

4 ... 7/16 inch

3 ... 7/16 inch

9 inch

36 inch

14 inch



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