VEGA WEIGHTRAC 31 4 … 20 mA_HART - four-wire - Manual (Page 21)

21
4 Mounting
WEIGHTRAC 31 • 4 … 20 mA/HART - four-wire
42374-EN-131119
The mounting of the measuring frame is finished.
Strain the measuring frame
Large measuring frames can deflect when subjected to strong vibra-
tion or strong winds.
Therefore, measuring frames used on conveyor belts with widths over
1600 mm (63 in) should be strained with steel cables.
For this there are two fastening straps on the side of the support stand
of the measuring frame.
Determine the fastening points on your conveyor belt according to the
local conditions.
Provide the straining screws (1) for each cable to ensure reliable
straining of the measuring frame.
Make sure that the measuring frame is perfectly vertical after strain-
ing.
1
Fig. 10: Straining the measuring frame
1 Straining screw
If the max. ambient temperature is exceeded, you must take suitable
measures to protect the instrument against overheating.
You can protect the instrument by providing a suitable insulation
against the heat or mounting the instrument further away from the
heat source.
Make sure these measures are taken into account already in the plan-
ning stage. If you want to carry out such measures later on, contact
our specialists to ensure that the accuracy of the application is not
impaired.
If these measures are not sufficient to maintain the max. ambient
temperature, you could consider using the water cooling system we
offer for WEIGHTRAC 31.
Protection against heat