Mode of operation | |
Measuring principle | Strain gauge load cells and digital speed sensor |
Typical application | Control and monitor feed rates and blending of minerals or powdered additives into a process |
Measuring accuracy | |
Accuracy1) | ± 0.5 % or better |
Repeatability | ± 0.1 % |
Specified range | 10 … 100 % based on speed |
Design rate range | 0.45 … 100 t/h (1 000 lb/h … 110 STPH) |
Max volumetric flow | 120 m3/h (4 237 ft3/h) |
Medium conditions | |
Operating temperature | -10 … +55 °C ( 14 … 131 °F) |
Material | Mild steel or stainless steel [304 (1.4301) or 316 (1.4401)], bead blast finish (1 ... 6 Ојm, 40 ... 240 Ојin) |
Load cells | |
Construction | 17-4 PH (1.4568) stainless steel or nickel plated alloy steel |
Degree of protection | - Stainless steel: IP68
- Nickel plated alloy steel: IP66
|
Excitation | 10 V DC nominal, 15 V DC maximum |
Output | 2 mV/V |
| ± 0.02 % of rated output |
| ± 0.01 % of rated output |
Capacity | - Stainless steel range: 6, 12, 30 kg
- Nickel-plated range: 10, 15, 20, 30, 50 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. 1 000 or 2 000 ppr |
Temperature | -10 … +70 °C (14 … 158 °F) |
Degree of protection | - Standard: IP64
- Stainless steel: IP67
|
Belt tracking switch | |
Aluminum spring rod (un-wired) | - 1 NO, 1 NC switch blocks
- Rated operating voltage 600 V AC max.
|
Temperature | -30 ... +85 °C (-22 ... +185 °F) |
Degree of protection | IP67 |
Framework | - Precision machined, stainless [304 (1.4301) or 316 (1.4401)] or mild steel
- Cantilevered design for easy belt replacement
|
Pulleys | 152 mm (6 inch) diameter with 6 mm (ј inch) neoprene lagging |
Belt speed | 0.005 … 0.36 m/s (1 … 70 fpm) |
Belt support | Edge of flat bar eliminates material buildup |
Bearings | - 2-bolt flange mount on drive pulley
- 2-bolt threaded base pillow block on driven pulley
|
Belting | - Polyester carcass with polyurethane top cover and static control with vulcanized endless finger splice for maximum weighing consistency (standard); optionally available in blue
- Maximum rated material temperature 82 °C (180 °F)
- Silicone HT belt rated for max. material temp. of 177 °C (350 °F)
|
Belt tension | Screw type, telescoper module with 150 mm (6 inch) travel - mild or stainless steel 304 (1.4301) |
Belt cleaning | - PE-HD blade type with spring tensioning at head pulley
- Return plow
- Cleaning brush, optional
|
Drive motor | - AC gearmotor: helical-worm geared motor, IE1, IP55, C2 coating.
- Optional food grade style: helical-worm geared motor, IE3, IP66, sealed surface treatment, meets FDA requirements.
|
Shipping weight | 280 kg (600 lb) minimum |
Approvals | - Declaration of incorporation of partly completed machinery acc. directive 2006/42/EC.
- Stainless steel options meet FDA requirements for food processing.
- Belt properties in compliance with food safety regulation (EU) 10/2011 and (EC) 1935/2004.
- Meets FDA 21CFR and Halal
- HACCP concept supported: resistant to hot water and ideal for frequent cleaning cycles.
- Hazardous approvals per configuration options.
Note: weighfeeder as a whole is not approved for hazardous locations only electrical components. |