Contactor,circuit breaker,solar inverter,electric meter,solar batteries
Domestic weighing sensors have achieved full range coverage (0.1kg~200t), C6 accuracy grade (±0.005%FS) and IP68/IP69K protection rating. Leading brands including ZEMIC, Keli Ningbo and Mali Guangdong hold over 30% global market share. They can fully replace imported products with higher cost performance, priced at only 30%-50% of imported equivalents.
- Leading Domestic Brands & Core Advantages
| Brand | Core Advantages | Representative Products | Market Positioning |
| ZEMIC | Military-grade quality, full product lineup, C3 accuracy | HM8C Shear Beam, H6G Spoke Type, L6D Single Point | Mid-to-high end industrial grade, truck scale & rail scale |
| Keli Ningbo | World’s largest steel sensor manufacturer, annual output 10 million units | SB Shear Beam, ZS Column Type, SQB Cantilever Beam | Full-range industrial use, best cost-effective choice |
| Mali Guangdong | High-precision digital sensors, intelligent algorithm, C6 accuracy | ML-SB Shear Beam, ML-S Tension & Compression Sensor | High-end replacement, IoT weighing system |
| Bengbu Sensor | Specialist in S-type tension-compression sensors, fast dynamic response | BHS-S Type, BHL Spoke Type | Industrial force control & automatic production lines |
| Nanli Dongguan | Miniature weighing sensors, high precision & small range | NL-Mini Series | Medical equipment & precision instruments |
| Longke Precision | Professional column sensors, heavy load capacity | LP7131 Column Sensor | Heavy machinery & port weighing |
- Official Standard Model Definition (Take ZEMIC HM8C-1t & Keli SB-1t as examples)
- ZEMIC HM8C-1t
HM8C: Product series code. H=Shear beam structure, M=Industrial grade, 8C=Standard dimension series (Outer diameter 67mm, height 46.5mm)
1t: Rated load code, 1 ton (1000kg). Other ranges: 0.3t/0.5t/2t/3t/5t/10t
Optional suffix: -C3 (Accuracy class), -SS (Stainless steel), -IP68 (Protection grade)
- Keli Ningbo SB-1t
SB: Product series code. S=Shear beam, B=Standard type, different from SBT (Through-hole type) and SBS (Threaded type)
1t: Rated load code, 1 ton. Other ranges: 0.3t/0.5t/2t/3t/5t/10t/15t/20t/30t
Optional suffix: -LD (Module type), -SS (Stainless steel), -D (Digital output)
III. Core Technical Parameter Comparison of Mainstream Domestic Models
| Parameter Category | ZEMIC HM8C-1t | Keli Ningbo SB-1t | Mali Guangdong ML-SB-1t | Remarks |
| Basic Parameters | ||||
| Working Principle | Strain gauge shear beam | Strain gauge shear beam | Strain gauge shear beam + digital compensation | Mainstream domestic technology |
| Working Voltage | 10~15 VDC | 10~15 VDC | 10~30 VDC | Compatible with PLC/DCS system |
| Output Sensitivity | 2.0 ± 0.002 mV/V | 2.0 ± 0.002 mV/V | 2.0 mV/V (Digital: 0.5~4.5V) | Stable signal for easy processing |
| Accuracy Grade | C3 (±0.02%FS) | C3 (±0.02%FS) | C6 (±0.005%FS) | Mali reaches high-end imported level |
| Performance Parameters | ||||
| Rated Load | 0.3t~3t | 0.3t~30t | 0.3t~30t | Covers small & medium weighing demands |
| Non-linearity | ≤±0.02%FS | ≤±0.02%FS | ≤±0.005%FS | Ensure measuring accuracy |
| Hysteresis | ≤±0.02%FS | ≤±0.02%FS | ≤±0.005%FS | Guarantee dynamic measuring stability |
| Temperature Compensation | -10℃~+40℃ | -10℃~+40℃ | -20℃~+60℃ | Superior wide temperature compensation for Mali |
| Safe Overload | 150%FS | 150%FS | 200%FS | Overload protection capability |
| Physical Parameters | ||||
| Outer Diameter | 67mm | 67mm | 67mm | Fully consistent with customer requirement |
| Height | 46.5mm | 47.7mm | 46.4mm | Mali fully matches required size |
| Material | Nickel-plated alloy steel | Nickel-plated alloy steel | Optional alloy steel / stainless steel | Corrosion resistant, suitable for industrial environment |
| Protection Grade | IP67 | IP68 | Optional IP68/IP69K | Dustproof & waterproof for harsh conditions |
| Cable Length | 4m | 4m | 5m (Customizable) | Standard configuration for easy installation |
| Weight | Approx. 1.2kg | Approx. 1.2kg | Approx. 1.1kg | Lightweight design for convenient mounting |
- Precisely Matched Models: OD 67mm × Height 46.4mm (Top Recommendations)
Mali Guangdong ML-SB-1t (Perfect Match)
Dimension: Outer diameter 67mm, height 46.4mm (Official measured data)
Core Advantages: C6 high accuracy, built-in temperature compensation & self-calibration algorithm, digital output, strong anti-interference
Application: High-precision platform scale, batching system, tank weighing, replace Mettler Toledo SB series
Order No.: ML-SB-1t-46.4 (Suffix 46.4 stands for exact height matching)
- ZEMIC HM8C-1t (Height 46.5mm, deviation 0.1mm)
Dimension: Outer diameter 67mm, height 46.5mm (Negligible 0.1mm deviation)
Core Advantages: Military-grade stable performance, 20% lower price than Mali
Application: Industrial platform scale & floor scale, preferred choice for high cost performance
Order No.: HM8C-1t-SS (SS means stainless steel material)
- Keli Ningbo SB-1t-LD (Height 47.7mm, deviation 1.3mm)
Dimension: Outer diameter 67mm, height 47.7mm (Need to adjust installation height)
Core Advantages: World top sales volume, abundant accessories & complete after-sales service network
Application: General industrial weighing, ideal for bulk procurement
Order No.: SB-1t-LD (LD means with mounting module)
- Full Model List of Domestic Weighing Sensors (Mainstream Brands)
- ZEMIC Series
| Model | Range | Structure | Dimension(mm) | Accuracy | Application |
| HM8C-0.3t | 300kg | Shear Beam | φ67×46.5 | C3 | Small platform scale |
| HM8C-1t | 1000kg | Shear Beam | φ67×46.5 | C3 | Medium platform scale |
| H6G-5t | 5000kg | Spoke Type | φ120×85 | C3 | Tank weighing |
| L6D15 | 15kg | Single Point | 120×60×30 | C3 | Electronic scale |
| H2F-20t | 20000kg | Spoke Type | φ200×150 | C3 | Truck scale |
- Keli Ningbo Series
| Model | Range | Structure | Dimension(mm) | Accuracy | Application |
| SB-0.5t | 500kg | Shear Beam | φ67×47.7 | C3 | Hopper scale |
| SB-3t | 3000kg | Shear Beam | φ67×47.7 | C3 | Heavy-duty platform scale |
| ZS-MKA-10t | 10000kg | Column Type | φ100×180 | C3 | Truck scale |
| SQB-2t | 2000kg | Cantilever Beam | 200×80×50 | C3 | Belt scale |
| ZSWFG-50kg | 50kg | Parallel Beam | 150×50×30 | C3 | Packing scale |
- Mali Guangdong Series
Model Range Structure Dimension(mm) Accuracy Application ML-SB-0.3t 300kg Shear Beam φ67×46.4 C6 High-precision batching ML-SB-2t 2000kg Shear Beam φ67×46.4 C6 Reactor kettle weighing ML-S-500kg 500kg S-type Tension-compression φ50×120 C6 Tension test ML-C-10t 10000kg Column Type φ100×180 C6 Large storage tank Cross-brand Equivalent Replacement Table (Domestic vs Imported)
| Imported Model | Domestic Replacement Model | Brand | Compatibility Points | Price Ratio |
| Mettler Toledo SB-1t | ML-SB-1t | Mali | Exact size φ67×46.4, C6 accuracy | Import 100% : Domestic 40% |
| Mettler Toledo SB-1t | HM8C-1t | ZEMIC | Similar size φ67×46.5, C3 accuracy | Import 100% : Domestic 35% |
| HBM RTN-0.05t | ML-S-0.05t | Mali | S-type tension-compression, C6 accuracy | Import 100% : Domestic 30% |
| WIKA C160 | ZS-MKA-10t | Keli | Column structure, C3 accuracy | Import 100% : Domestic 35% |
| Keyence GT2-71 | L6D15 | ZEMIC | Single point type, C3 accuracy | Import 100% : Domestic 25% |
VII. Common Troubleshooting & Maintenance Solutions (Universal for Domestic Products)
| Fault Phenomenon | Possible Causes | Inspection Steps | Maintenance Solutions |
| Reading Drift | 1. Severe temperature change | 1. Check ambient temperature (-10℃~+40℃) | 1. Install heat insulation cover |
| 2. Loose installation | 2. Fasten mounting bolts | 2. Retighten bolts | |
| 3. Damaged cable | 3. Inspect cable shielding layer | 3. Replace shielded cable | |
| Severe Signal Noise | 1. Electromagnetic interference | 1. Keep away from inverters & motors | 1. Add filter |
| 2. Power supply fluctuation | 2. Test input voltage 10~15V | 2. Equip stabilized power supply | |
| 3. Moisture ingress | 3. Check protection integrity | 3. Reseal the sensor | |
| No Signal Output | 1. Abnormal power supply | 1. Measure supply voltage | 1. Repair power circuit |
| 2. Wrong wiring | 2. Verify wiring: Red(+), Black(-), Green(S+), White(S-) | 2. Wire as manual instruction | |
| 3. Damaged sensor | 3. Test bridge resistance (approx. 350Ω) | 3. Contact manufacturer for repair | |
| Accuracy Decline | 1. Overload operation | 1. Confirm load below 150%FS | 1. Replace proper range model |
| 2. Expired calibration | 2. Check last calibration date | 2. Recalibrate equipment | |
| 3. Elastic body fatigue | 3. Observe output linearity | 3. Replace new sensor | |
| Zero Drift | 1. Failed temperature compensation | 1. Confirm temperature compensation range | 1. Adopt wide-temperature compensated model |
| 2. Inclined mounting plane | 2. Level mounting base | 2. Adjust installation level | |
| 3. Long-term overload | 3. Check historical load records | 3. Replace new sensor |
VIII. Typical Application Cases of Domestic Weighing Sensors
Case 1 Chemical Industry: Reactor Kettle Weighing System (Mali ML-SB-2t)
Project Background
A large chemical enterprise needs real-time weighing for 10 sets of 5000L reactor kettles to control feeding precision with allowable error less than ±0.1%.
Core Challenges
- Corrosive working environment requiring IP68 protection
- Wide temperature fluctuation: -10℃~+50℃
- High precision demand up to C6 grade
- ATEX Zone 1 explosion-proof certification required
Solutions
Equip 4 sets of ML-SB-2t sensors (φ67×46.4mm) for each kettle with three-point support structure
Adopt stainless steel sensors with IP68 protection and ATEX explosion-proof certificate
Match Mali digital indicator, connect to DCS system via Modbus RTU protocol
Set regular automatic calibration to compensate temperature drift
Application Effects
- Measuring accuracy reaches ±0.05%FS, feeding qualification rate rises from 98% to 99.9%
- 2-year trouble-free continuous operation, maintenance cost cut by 80%
- Total cost reduced by 60% compared with imported scheme, payback period shortened to 3 months
- Explosion-proof design ensures safe production without safety incidents
Case 2 Logistics Industry: Intelligent Sorting Scale (ZEMIC L6D15)
Project Background
An e-commerce logistics hub processes 100,000 parcels daily, requiring automatic weighing & sorting with speed over 100 pieces per minute.
Core Challenges
- Fast response required for dynamic weighing
- Wide weight range: 0.1kg~30kg
- Humid & dusty environment needing IP67 protection
- Low-cost large-scale deployment (500 sets)
Solutions
Install 1 set of L6D15 single-point sensor (15kg range) on each sorting scale
Lightweight aluminum alloy design, response frequency over 500Hz
Equip ZEMIC high-speed indicator, access WMS system via Ethernet
Batch calibration to ensure consistency error below ±0.1% among all devices
Application Effects
- Max weighing speed reaches 150 pieces per minute, sorting efficiency improved by 50%
- Sensor failure rate lower than 0.1%, extremely low maintenance cost
- Total investment reduced by 70% versus imported solution, annual cost saving about 2 million RMB
- Stable system operation for 1 full year without shutdown failure
- Compliance Certifications & Air Freight Information
- Certifications Approved
CE: Compliant with EN 61326-1 for European market access
UL: Meets North American industrial safety standards
RoHS: Lead-free eco-friendly design complying with EU directives
Explosion-proof Certificate: ATEX/IECEx approved models available for hazardous areas
CMC: China Measuring Instrument Manufacturing License, mandatory for domestic sales
- Air Shipping Compliance
No built-in lithium batteries, super capacitors or hazardous substances
Classified as ordinary industrial electrical goods, no special documents needed for air & sea transportation
Packaged per ISTA 2A standard for direct international delivery
- Origin: Manufactured domestically in China (mainly Shaanxi, Zhejiang and Guangdong) with global unified quality standards
- Quick Selection Rules for Domestic Weighing Sensors
- Choose larger range rather than smaller: Reserve 20% margin, select 1.2 times of actual load
- Match accuracy with demand: C3 grade (±0.02%) for general industry; C6 grade (±0.005%) for high-precision scenarios
- Select material by environment: Alloy steel for normal environment, stainless steel for corrosive environment
- Protection grade selection: IP67 moisture-proof, IP68 waterproof, IP69K high-pressure washable
- Strict size matching: Prioritize Mali ML-SB series (φ67×46.4mm) for limited installation space
