Calibration chains

Dynamic accuracy verification of belt scale and weigh belt feeder

  • Dynamic accuracy verification of belt scale and weighing belt feeder
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Calibration chains (CLM85 and CLM90) are essential accessories to any user of conveyor belt scales or weighbeltfeeders.
It’s often very difficult to check the dynamic accuracy of a beltscale or a weighbeltfeeder installed in a continuous production line if there is no material deviation possibility for a drop test.
Each CLM calibration chain consists of 1 hanging shaft with hook and several roller segments. The segment pitch is selected according to the weighbridge length.

  • For a short weighbridge, choose a segment with 100mm pitch
  • For a long weighbridge, choose a segment with 200 mm pitch.

The required total calibration chain length is defined according to the weighbridge length.

  • 2 available pitches depending on weighbridge length
  • Double chains for belt width > 1 meter
Technical sheet

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Chain types

There are 3 possible material qualities: steel, cast iron or stainless steel.

The segment pitch is either 200 mm or 100 mm
A range of weight per meter is available as standard.

Type CLM85

Materials : Cast iron or stainless steel.
Standard lenghts : 4.2, 5.2, 6.2 and 7.2 m (others on request)
Pitch : 200 mm

Weight per meter (kg/m) 30 40 50 65 80
Width (mm) 185 200 215 230 245

(Other weights per meter on request)

 

Type CLM90

Materials : Steel or stainless steel.
Standard lenghts : 2.6, 3.2, 4.2, 5.2 m (others on request)
Pitch : 100 mm

Weight per meter (kg/m) 30 40 50 65 80
Width (mm) 185 200 215 230 245

(Other weights per meter on request) 

Détermination of the chain weight per meter of chain

Depending on the nominal belt load (kg/m) on the beltscale or weighbelt feeder, the weight per meter of the chain will represent :

  • 80% - 110% of the nominal belt load for weighbelt feeders
  • 50% - 100% of the nominal belt load for beltscales


L = Length
w = Width
P = Pitch

Double chain

For belt widths larger than 1 meter, choose a double chain.

Calibration certificate

On request at the time of order, HASLER Group will provide a calibration chain certificate issued by the Weights & Measure Authority.