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 |
Repeatability | ± 0.1 % |
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 temperature | -40 ... 200 °C (-40 ... 392 °F) |
Material | Mild steel with stainless steel [304 (1.4301) or 316 (1.4401)], bead blast finish (1 ... 6 ?m, 40 ... 240 ?in) 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 (? inch) min. 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 | - 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 with 150 mm (6 inch) minimum travel
- Gravity tensioned self-steering belt tracker (optional)
|
Belt cleaning | - Gravity tensioned UHMW blade at head pulley, for cleaning product side of the belt.
- UHMW blade type 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. |
