Beschreibung
SIWAREX WL280 RN-S SA is abending ring load cell. Particularly due to its high resolution this load cell can also be adapted to batching applications or legal-for trade scales.. WL280 RN load cells with a rated load up to 13t are additionally equipped with integral overload protection. Due to its low installation dimensions the load cell can be applied to a wide range of applications. The huge number of mounting accessories like self-aligning bearing, elastomer bearing, guide elements, etc. facilitates the various use and provide a secure installation as well as an optimal flow of forces.
Scope of application
container, conveyor and platform scales
Special characteristics
- Wide range of load classes available
High IP protection class
Easy and fast installation due to the use of mounting units
Suitable for use in legal metrology
High accuracy classes
Features
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SIWAREX WL280 RN-S SA load cells
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Possible applications
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Hopper, belt, platform and roller conveyor scales
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Type of construction
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Ring torsion load cell
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Rated load/maximum load Emax.
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- 60 kg (132.28 lb)
- 130 kg (286.60 lb)
- 280 kg (617.29 lb)
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- 0.5 t (0.49 tn. l.)
- 1 t (0.98 tn. l.)
- 2 t (1.97 tn. l.)
- 3.5 t (3.45 tn. L.)
- 5 t (4.92 tn. l.)
- 10 t (9.84 tn. l.)
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- 13 t (12.80 tn. l.)
- 28 t (27.56 tn. l.)
- 60 t (59.05 tn. l.)
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Accuracy class according to OIML R60
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C3
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Max. scale interval nLC
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3 000
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Min. scale interval Vmin
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E max/16 000
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E max/17 500
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Minimum application range Rmin(LC)
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19 %
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17 %
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Combined error Fcomb
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≤ ± 0.023% Cn
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Repeatability Fv
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≤ ± 0.01 % Cn
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Return of zero signal
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≤ ± 0.0167 % Cn1)
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Creep error Fcr
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≤ ± 0.0245 % Cn1)
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≤ ± 0.0053 % Cn1)
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Temperature coefficient
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≤ ± 0.004 % Cn/5K
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≤ ± 0.004 % Cn/5K
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Min. dead load Emin
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≥ ± 0 % Emax
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Max. working load Lu
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200 % Emax
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150% Emax
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Breaking load Ld
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500 % Emax
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300% Emax
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300% Emax
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Safe side load LIq
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75 % Emax
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100% Emax
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75 % Emax
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Deflection hn at Emax
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0.07 mm
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0.1 ± 0.02 mm
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0.11 … 0.2 mm
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Overload protection
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Integrated
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Integrated
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Integrated at 13 t
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Supply voltage Usr (reference value)
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15 V
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10 V
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15 V
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Supply voltage (range)
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5 … 30 V+
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Rated characteristic value Cn
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1 mV/V
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2 mV/V
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2 mV/V
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Tolerance Dc of characteristic value
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Up to 500 kg (1 102.31 lb): 0.01 mV/V
From 500 kg (1 102.31 lb): 0.1 mV/V
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Tolerance Do of zero signal
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≤ ± 1.0% Cn
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Input resistance Re
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60 kg (132.28 lb): 1 260 Ω ± 100 Ω
130 kg (286.60 lb): 1 260 Ω ± 100 Ω
280 kg (617.29 lb): 1260 Ω ± 250 Ω
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1 100 Ω ± 100 Ω
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13 t: 1 200 Ω ± 100 Ω
28 t: 1 075 Ω ± 100 Ω
60 t: 1 350 Ω ± 200 Ω
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Output resistance Ra
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1 020 Ω ± 0.5 Ω
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1 025 Ω ± 25 Ω
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13 t: 1 000 Ω ± 0.5 Ω
28 t: 930 Ω ± 0.5 Ω
60 t: 1 175 Ω ± 0.5 Ω
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Insulation resistance Ris
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≥ 5 000 MΩ
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≥ 5 000 MΩ
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≥ 5 000 MΩ
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Rated temperature range Btn
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-10 … +40 °C (14 … 104 °F)
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Operating temperature range Btu
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-35 … +70 °C (-31 … 158 °F)
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Storage temperature range Bts
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-50 … +90 °C (-58 … 194 °F)
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Sensor material (DIN)
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Stainless steel EN 1.4542
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Degree of protection according to EN 60529; IEC 60529
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IP66/68
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Recommended tightening torque of the fixing screws
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8 Nm
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14 Nm (0.5 … 5 t)
10 Nm (10 t)
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–
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Current calibration2)
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Standard
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Ex protection to ATEX (optional)
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II 1 G Ex ia IIC T4 Ga
II 1 D Ex ia IIIC T73 °C Da
II 3 G Ex ic IIC T4 Gc
II 3 G Ex nA IIC T4 Gc
II 3 G Ex tc IIIC T63 °C Dc
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Cable connection
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Function
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Color
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Pink
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Gray
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Brown
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White
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- Shield (not connected to the load cell body)
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Transparent
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1) For rated temperature -10 … +40 °C (14 … 104 °F)
2) Current calibration: rated characteristic value and output resistance are adjusted so that the output current is calibrated within 0.05 % of a reference value. This makes it easier to connect several load cells in parallel.
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