WÖHWA Waagenbau GmbH

Questionnaire and Accuracy Specification
WÖHWA Belt Scale SFB

* Required fields

1/21 Installation location for the belt scale

Please select the installation location for the belt scale matching your local conditions.

2/21 Belt inclination

The degree of belt inclination must be such that there is no relative movement of the conveyed bulk material (material must not roll back on the belt).

3/21 Material feeding point

Ideal values

actual values on site
user input


measurement range = belt speed * 1/s =


zone of influence = 3 * measurement range =


minimum distance = belt speed / 3 * 1/s * E =

4/21 Minimum distance to head pulley

ideal value

actual transition length
user input


Safe distancemin = 2,5 * E =

5/21 Troughing angle

6/21 Idlers near the scale area

Consistent troughing and a low idler runout tolerance must be guaranteed.

7/21 Idler roll runout tolerance

8/21 Idler alignment tolerance

9/21 Idler level tolerance

10/21 Stationary or mobile plant

11/21 Environmental conditions

The belt scale is installed in a conveyor that is protected from wind, weather and extreme temperature variations.

12/21 Conveyor chassis and dimensions

13/21 Belt quality

14/21 Belt type

15/21 Weight-loaded belt tensioning device

16/21 Flow rate

17/21 Material density

18/21 Installation in loadout conveyor

19/21 Lateral feeding points

20/21 Skirtings

21/21 Legal-for-trade scale


The belt scale installation site must be easily accessible during installation works.

Belt speed fluctuations have a detrimental effect on the belt scale accuracy.

Legal-for-trade belt scales require strict observance of the Verification Ordinance.

The final scale accuracy can only be established by in-service measurements.

The accuracies listed can only be achieved by strictly observing the regular maintenance intervals as indicated in the Operating Manual.