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Product description:
The B520SD series are typical and high precision, low-profile single-ended shear beam load cells, which are available in a wide range of capacities. Full alloy steel or stainless steel (optional) construction and complete hermetic sealing ensures reliable accuracy and robustness in harsh industrial applications. The B520 series are the ideal load cells for high precision weighing platforms with bolts by 2 pcs through-holes firmly at end, meanwhile the force would be applied from the self-aligning feet by the other end vertically.
Main Features:
• Material: Alloy steel，stainless steel optional
• Rated Capacities: 100kg~2t
• OIML R60, NTEP HB44, CE and RoHS certified
• IP Rating: IP67, IP68
• Suitable for floor scales, medical bed weighing and other electronic weighing devices.
• High precision by OIML R60 C5, high reliability.
| Parameter | Units | Specification | ||||||
| Model No. | B520SD | |||||||
| Rated capacity (R.C.)4) | t | 0.5 | 1 | 2 | 3 | 5 | ||
| Sensitivity at R.C. | d @ R.C. | 500,000 | 500,000 | 400,000 | 300,000 | 500,000 | ||
| Accuracy class 1)2) | C3 C6 | |||||||
| Min. dead load | kg | 0 | ||||||
| Zero balance | % of Emax | ＜ ± 1 | ||||||
| Y-value | 10000 15000 | |||||||
| Repeatability error | % of AL 3) | ＜ ± 0.010 ＜ ± 0.005 | ||||||
| Creep; 30 minute | % of AL | ＜ ± 0.0167 ＜ ± 0.0083 | ||||||
| Min. dead load output return (DR); 30 min | % of AL | ＜ ± 0.0167 ＜ ± 0.0083 | ||||||
| Temp. effect on | Min. dead load output | % of Emax/℃ | ＜ ± 0.0016 ＜ ± 0.00107 | |||||
| Rated output 1)2) | % of AL/℃ | ＜ ± 0.00133 ＜ ± 0.00066 | ||||||
| Temperature range | Compensated | ℃(°F) | -10 to +40 [+14 to +104] | |||||
| Operating | -20 to +65 [-4 to +149] | |||||||
| Safe storage | -40 to +80 [-40 to +176] | |||||||
| Effect of Cable Length on System Accuracy | kg | 0（digital signal） | ||||||
| Communication | Mode | CAN | RS485 | |||||
| Protocol | CANopen | Modbus RTU | ||||||
| Transmittion rate | 125 / 250 kbps | 9600bps / 57600bps | ||||||
| Effective refresh rate | HZ | 40（4pcs digital load cell,125kbps） | 20（4pcs digital load cell,9600bps） | |||||
| Excitation voltage | Recommended | V DC | 12 or 24 | |||||
| Minimum / Maximum | 7.5 / 28 | |||||||
| Excitation current | Typical value | mA | 20 | |||||
| Max. value | 150 | |||||||
| Warm-up time | mins | 15 | ||||||
| Surge protective device | Integral (GDT+TVS) | |||||||
| Insulation resistance @50VDC | MΩ | ＞5000 | ||||||
| Breakdown voltage | V AC | ＞500 | ||||||
| Protection | Type | Hermetically sealing | ||||||
| IP rating | IP68 | |||||||
| Load limit | Safe dynamic load | % of Emax | 70 | |||||
| Safe | 150 | |||||||
| Ultimate | 300 | |||||||
| Material | Spring element | Stainless steel | ||||||
| Enclosure | 316 stainless steel, hermeticaly sealing | |||||||
| Connectors | Stainless steel, fixed assembled | |||||||
| Strain gauge | PEEK | |||||||
| Cable construction | fireretardant and cold-resistant PVC, 6mm O.D. ; 4 Conductors triple shielded wires | |||||||
| Cable length | load cell | m | 3.0 | |||||
| Network | via junction box | |||||||
| Weight; approx | kg | 0.5-2t | 3-5t | |||||
| 1.2 | 2.1 | |||||||
| Fatigue life | times @Emax | ＞1,000,000 | ||||||
| Deflection at Emax; approx | mm | ＜0.5 | ||||||
| Barometric pressure effect on Zero Output | Vmin/kPa | ＜1.0 | ||||||
| Fixing bolts | Size/ class | M12 / A2-70 | M18 / A2-70 | |||||
| Recommended tightening torque | N.m | 98 | 120 | 275 | ||||
| Notes: | ||||||||
| 1) Error due to the combined effect of non-linearity and hysteresis | ||||||||
| 2) The sum of errors due to Temperature Effect on Output comply with the requirements of OIML R60 and NIST HB44 | ||||||||
| 3) AL = Applied Load | ||||||||
| 4) R.C. = Rated Capacity | ||||||||
