Calibration of Inclined Belt Weighing System

Posted in: , on 14. Sep. 2012 - 13:44

calibration of Belt weigher system for inclined coal conveyor

We have installed inclined belt weigher in coal handling system. supplier gave us one calibration rod (weight 4.462 kg) for calibration purpose. now when we put this rod on load cell indicator shows 23 kg. ,supplier does not provide any details about how this weight come. based on our knowledge we found following result how 23 kg come.

my question is below formula is right or wrong? in wrong what is correct formula to determine belt weight

is there any significant of inclination angle or troughing angle in weigh measurement?

*technical details

material-coal

design capacity-100 TPH

troughing angle- 35 deg

belt inclination -10.5 deg

belt width-800mm

spedd1 m/s

weighr measuring span- 1.60 mtr

also we have 2 weighing idler & one pre idler & one post idler for one load cell





Formula


Std. weight= Y

=Y * 4(inclined belt weigher designed such a way actual weight transfer is 1/4 of the weight)

=(Y * 4 )/cos 35calibration factor For inclined Belt Weigher

In our case

Std. weight=Y4.642(calibration rod weight)

=Y *418.568

=(Y*4)/cos 35

=23Kg

Flow rate (TPH)=(weight/mtr)*(mtr/sec)

=(kg/mtr)*(mtr/sec)

=kg/sec

=(kg/sec)*3600 (we convert sec into hour)

=kg/hr

=(kg/hr)/1000 (we convert kg into tph)TPH formula for inclined belt weigher

=TPH

in measurement we are used one load cell & 2 idler

=(Kg/mtr)14.375( Distance between 2 measuring idler & half of the pre idler & post idler is 1.60 mtr )

=23/1.6

=(kg/mtr) *3.651.75( We convert kg into tph)

=TPH51.75

Conveyor Belt Scale

Posted on 14. Sep. 2012 - 06:01
Quote Originally Posted by jaiminView Post
calibration of Belt weigher system for inclined coal conveyor

We have installed inclined belt weigher in coal handling system. supplier gave us one calibration rod (weight 4.462 kg) for calibration purpose. now when we put this rod on load cell indicator shows 23 kg. ,supplier does not provide any details about how this weight come. based on our knowledge we found following result how 23 kg come.

my question is below formula is right or wrong? in wrong what is correct formula to determine belt weight

is there any significant of inclination angle or troughing angle in weigh measurement?

*technical details

material-coal

design capacity-100 TPH

troughing angle- 35 deg

belt inclination -10.5 deg

belt width-800mm

spedd1 m/s

weighr measuring span- 1.60 mtr

also we have 2 weighing idler & one pre idler & one post idler for one load cell





Formula


Std. weight= Y

=Y * 4(inclined belt weigher designed such a way actual weight transfer is 1/4 of the weight)

=(Y * 4 )/cos 35calibration factor For inclined Belt Weigher

In our case

Std. weight=Y4.642(calibration rod weight)

=Y *418.568

=(Y*4)/cos 35

=23Kg

Flow rate (TPH)=(weight/mtr)*(mtr/sec)

=(kg/mtr)*(mtr/sec)

=kg/sec

=(kg/sec)*3600 (we convert sec into hour)

=kg/hr

=(kg/hr)/1000 (we convert kg into tph)TPH formula for inclined belt weigher

=TPH

in measurement we are used one load cell & 2 idler

=(Kg/mtr)14.375( Distance between 2 measuring idler & half of the pre idler & post idler is 1.60 mtr )

=23/1.6

=(kg/mtr) *3.651.75( We convert kg into tph)

=TPH51.75

I would think the operating manual provided for your conveyor belt scale should tell

you that the rod represents the tare weight of the representative belt length being

belt length corresponding to the rods actual length.