Mode of Operation

Measuring principle

Strain gauge load cells and digital speed sensor

Typical application

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

Measuring accuracy

Accuracy¹⁾

± 0.5 % or better

Repeatability

± 0.1 %

Turn down

10 ... 100 % based on speed

Design rate range

4.5 ... 270 t/h (5 ... 300 STPH)

Medium conditions

Operating temperature

-10 … +40 °C (14 … 104 °F)

Design

Material

Mild steel with abrasion resistant or stainless steel [304 (1.4301)] contact parts optional

Load Cells

Two corrosion-resistant platform type with mechanical overload protection [nickel plated or 17-4 PH (1.4568) stainless steel construction with 304 (1.4301) stainless steel cover]

Non-linearity

± 0.03 %

Non-repeatability

± 0.02 %

Speed sensor

Industrial duty, digital optical encoder, tail shaft mounted

Framework

• Painted structural steel
• Cantilevered mild steel structural frame for quick and easy belt replacement

Pulleys

Crowned with 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

Belt speed

0.005 ... 0.36 m/s (1 ... 70 fpm)

Belting

• Heavy duty endless design for maximum weighing accuracy. SBR, Butyl or Nitrile material options
• Flat, B-section flanges or corrugated sidewall options

Belt tension

Screw type, telescoper module

Belt cleaning

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

Drive motor

Totally enclosed AC, three phase inverter duty rated motor with shaft mounted gear reducer

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.