Measuring principle

Strain gauge load cells and digital speed sensor

Typical application

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

Measuring accuracy

Accuracy¹⁾

± 2 % or better

Repeatability

± 0.1 %

Specified range

33 ... 100 % based on speed

Design rate range

10 ... 2 000 t/h (11 ... 2200 STPH)

Max volumetric flow

1 500 m3/h (53 000 ft³/h)

Medium conditions

Material temperature

-40 ... +150 °C (-40 ... 300 °F)

Operating temperature

-40 … +65 °C (-40 … +150 °F)

Material

Mild steel with abrasion resistant contact parts optional

Load cells

Construction

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

Degree of protection

IP67

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

50, 100, 250, 500, 750, 1 000 lb

Overload

150 % of rated capacity

Temperature

• Operating range: -40 … +65 °C (-40 … +150 °F)
• Compensated: -10 … +40 °C (15 … 104 °F)

Speed sensor

WS300 Output

See page 4/45

Framework

Painted structural steel

Sprockets

Heavy duty chain sprockets for positive apron conveying

Pan support

Heavy-duty steel rollers

Pan speed

0.01 ... 0.25 m/s (2 ... 50 fpm)

Bearings

Heavy duty pillow block style on head sprockets

Heavy duty take up style on tail sprockets

Chain

Per ISO1977:2000 and conforming to regulations of GB/T8350-2003

Chain tension

• Screw type, with take up bearings
• Spring tensioned

Drive motor

AC, TEFC, 4:1 CT inverter duty, drive motor with direct coupled flange mounted hollow bore KA gear reducer, 1.2 service factor min.

Shipping weight

900 kg (2 000 lb) minimum

Approvals

• CE on all electrical components
• Hazardous approvals available on electrical components

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