VEGA WEIGHTRAC 31 Foundation Fieldbus - Manual (Page 52)

52
7 Setup with PACTware
WEIGHTRAC 31 • Foundation Fieldbus
42375-EN-131120
•
You have a known quantity of material lying in typical way and at a
typical height on a short section of the conveyor belt.
•
You know the later, continuous belt speed or can measure it.
•
The conveyor belt is loaded as completely as possible (100 %).
•
You can slowly move the conveyor belt manually.
If you do not have the option of moving the conveyor belt slowly by
hand and the materials are light weight, place the material on a long
piece of foil that you slowly pull through the measuring frame. In case
the weight of the foil is not negligible, you should add the weight of the
foil to the total weight later on.
Make sure that you do not reach into the control area of the measur-
ing plant. Cut the foil to an appropriate length.
1. Make sure that the source container is closed and locked (operat-
ing position: Off)
2. Load the conveyor belt evenly with a known quantity of material,
for example 60 kg over a length of 1 m.
Make sure that the material type and loading height corresponds
to the material that is measured later on.
3. Move the stretch of material into the measuring frame of
WEIGHTRAC 31.
4. Switch on the source container.
5. Click to "Start measurement".
6. Slowly move the belt manually or move the material slowly by
pulling on the foil. This process should take 5 to 10 minutes.
7. Click to "Stop measurement".
8. The measured count rate is stated in ct/s. This is the number of
counts per second, i.e. the measured radioactive radiation dose
actually reaching the sensor.
9. Now enter the corresponding material quantity (e.g. kg, t, lb). In
this case, this is the total material quantity lying on the conveyor
belt during the measurement.
Enter the length of the portion of belt used (e.g. 1 m).
This assigns a corresponding material quantity to the actual pulse
rate (e.g. 60 kg/m).
10. Click to "Complete".
Accept the value pair with "Accept".
11. Repeat this procedure with a larger quantity of material (e.g.
120 kg) until you have reached the max. loading height of the
conveyor belt.
You can select further options in PACTware.
A detailled description of the functions is available in the PACTware
online help.
When a reset is carried out, all settings (with only a few exceptions)
are reset. The exceptions are: PIN, language and HART mode.
The following reset functions are available:
Further settings in PACT-
ware
Additional adjustments
- Reset