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Schenck Process / Weighbeam DWR 50 ... 70 t

Schenck Process / Weighbeam DWR 50 … 70 t

■ Service temperature up to 120°C
■ Separate mounting of connecting cable through connector
■ Simple mechanical design
■ Simple and economical installation through direct screwing onto the con- necting structure

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Weighbeam DWR 50 … 70 t

Application

  • Scrap bucket, roller table weighing and tundish scales
  • Silo and hopper scales
  • Crane scales

Construction

  • Rugged design, low headroom
  • Plug-in connector
  • High-grade stainless steel

Function

  • Simple and economical installa- tion through direct screwing to the connecting structure without mov- able parts
  • No need for additional tie-rods and hold-downs
  • High long-term stability
  • High degree of repeatability
  • Separate mounting of weigh- beam and connecting cable possible
  • Easy cable exchange

Operating principle (application tundish scale)

Technical Data

    DWR 50 t DWR 60 t DWR 70 t     Reference
Rated capacity Emax 50 t 60 t 70 t      
Limit load

= Maximum admissible load

 LI 100 t 120 t 140 t      
Rupture load Ld 150 t 180 t 210 t      
Max. admissible side load (with screw friction) Lqmax 5 t 5 t 5 t      
Max. admissible side load (with form fit) Lqmax* 35 t 42 t 49 t      
Sensitivity Cn 1,3 mV/V 1,0 mV/V 1,1 mV/V     Emax
Combined error Fcomb + 0,5% Cn
Creeping under load (30 min) Fcr + 0,05% Cn
Input resistance Re 380 W + 3 W Tr
Output resistance Ra 350 W + 2 W Tr
Reference supply voltage Usref 10V  
Max. supply voltage Usmax 15V  
Nominal temperature range Btn – 10°C to + 80°C  
Service temperature range Btu – 15°C to + 120°C  
Reference temperature Tr. + 22°C  
Storage temperature range BST – 50°C to + 130°C  
Temperature effect on zero signal TKo + 0,1% / 10K Cn in Btn
Temperature effect on sensitivity TKc + 0,07% / 10K Cn in Btn
Dead weight me 14 kg 22 kg 27 kg      
Corrosion protection   metallic bright, stainless  
Protection class   IP 65  
Cable specification   Special silicone RAL 7000 (grey) Ø 6,5 mm x 15 m, – 30°C to + 150°C  
Colour code   Black:                    Input + (82)           Blue:       Input – (81)

Red:                       Output + (28)       White: Output – (27) Green-yellow:                             Screening

  

Mounting Dimensions

Variante A

mm

 B

mm

 C

mm

 D

mm

 E

mm

 F

mm

 G

mm

 H

mm

 J

mm

 K

mm

 L

mm

 M

mm

 N

mm
DWR 50 t 230 88 67 190 Ø 96,5 h12 80 3,15 Ø 16,5 40 Ø 100 36 35 57
DWR 60 t 284 132 112 240 Ø 116 h13 90 4,15 Ø 16,5 40 Ø 120 36 38 76
DWR 70 t 330 146 127,8 290 Ø 126 h13 96 4,15 Ø 16,5 40 Ø 130 40 43 85

Dimensions E and G for retaining ring DIN 471
Recommended tolerance of the bore (dimension K): F8

Connecting surface quality requirements

Material quality “A”

  • Usually construction steel of minimum quality S355 is used.

Plate thickness “B”

  • Depends on stiffness of total construction.

  • Plate thickness of connecting surface must be at least 40% of the weighbeam height (dimension F on page 3).

Surface quality “C”

  • Requisite mean roughness of the connecting surfaces is 6.3 µm.

  • Plane 1

  • Plane 2

Planeness “D”

  • Maximum admissible planeness tolerance within the two outer conjoint connecting surfaces for each weighbeam is 0.05 mm.

Angular deviation error to vertical axis “E”

  • Angle deviation of connecting surface to vertical axis in both planes of view must not exceed ± 2°.

Plane parallelism “F”

  • Upper and lower connecting surfaces to the weighbeam have to be plane parallel to minimum 0.1 mm.

  • Possibly execute load input convex (detail “X”).

  • Construction is angle compensating (also for elastic deflections).

Variant Order No.
DWR 50 t V 013 257 .B04
DWR 60 t V 013 257 .B05
DWR 70 t V 013 257 .B06
Spare Part: 15 m connect- ing cable with

plug socket

 V 023 643 .B01

 

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