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This is a 5-ton compact compression load cell developed by Germany Sartorius (now owned by Minebea Intec), specially designed for tank and silo weighing. It features accuracy class D1 (0.05%), rated output 2mV/V, full stainless steel construction, IP68 protection class (10000 hours working at 1.5m water depth), wide operating temperature range from -40℃ to +95℃. It is compatible with PR6011/6012 mounting kits and certified with ATEX, FM, CSA, CE and RoHS. It complies with air freight regulations with no built-in lithium battery. Part No.: PR6211/53D1 (discontinued), replacement model: PR6212/53D1.
- Model Code Explanation
| Segment | Code | Definition |
| Series Code | PR6211 | Compact compression load cell series for tanks and silos |
| Capacity Code | 53 | Rated capacity: 5000kg (5 tons) |
| Accuracy Class | D1 | Accuracy Class D1 (0.05%) for industrial process weighing |
| Special Version | None | Standard version (LT=high temperature version, E=explosion-proof version) |
Full Model Definition: Sartorius PR6211 series compact compression load cell, 5-ton capacity, D1 accuracy class, applied for tank, silo and industrial process weighing, full stainless steel, IP68 protection, standard temperature range operation.
- Core Technical Specifications (2026 Official Manual)
| Category | Specification | Remarks |
| Basic Parameters | ||
| Max Capacity (Emax) | 5000kg (5t) | 333% safe overload, 1000% ultimate breaking load |
| Accuracy Class | D1 (OIML R60) | Total error < ±0.05%FS, repeatability < 0.01%FS |
| Rated Output (Cn) | 2mV/V ±0.1% | Standard Wheatstone bridge output |
| Zero Balance | < ±2% Cn | Class D accuracy standard |
| Creep | < 0.02% Cn/30min | Output drift within 30 minutes |
| Electrical Parameters | ||
| Input Resistance | 1300±12Ω | Resistance between power terminals |
| Output Resistance | 1200±2Ω | Resistance between signal terminals |
| Insulation Resistance | >5000MΩ @50V DC | Between measuring circuit and housing |
| Recommended Excitation Voltage | 4~24V DC/AC | Optimal working voltage range |
| Max Excitation Voltage | 32V DC/AC | No damage under continuous operation |
| Temperature Compensation Range | -10℃~+55℃ | Temperature range for guaranteed accuracy |
| Temperature Effect | Sensitivity: <0.042% Cn/10K | Temperature influence on output signal |
| Zero: <0.03% Cn/10K | ||
| Physical & Environmental Properties | ||
| Material | Main body: 1.4542 stainless steel (17-4PH) | Corrosion resistant, suitable for harsh conditions |
| Protection Class | IP68 / IEC529 | Fully waterproof, 10000 hours immersion at 1.5m depth |
| Operating Temperature | -40℃~+95℃ | Wide temperature adaptability |
| Storage Temperature | -40℃~+95℃ | Temperature for transportation and storage |
| Vibration & Shock Resistance | 5~150Hz 10g / 11ms 30g | Excellent adaptability for industrial sites |
| Dimension (Diameter×Height) | 170×60mm | Compact structure, low overall installation height |
| Cable Specification | 4-core shielded cable, 5m length | PE material, oil and corrosion resistant |
| Certifications | ||
| ATEX | II 1/2D Ex ia IIB T4 Ga / II 2D Ex iaD 20 T135℃ | Suitable for Zone 1,2,20,21,22 hazardous areas |
| FM | Class I, Div 1, Groups A,B,C,D | North American explosion-proof certification |
| CSA | Class I, Div 1, Groups A,B,C,D | Canadian explosion-proof certification |
| CE | EN 61326-1, OIML R60 | Compliant with LVD and EMC directives |
| RoHS | 2011/65/EU | Comply with RoHS 2.0 hazardous substance restrictions |
- Full PR6211 Series Model List
| Model | Capacity | Accuracy Class | Version | Application | Replacement Model |
| PR6211/31D1 | 30kg | D1 | Standard | Small tanks, laboratory equipment | PR6212/31D1 |
| PR6211/51D1 | 50kg | D1 | Standard | Small hoppers, packaging machines | PR6212/51D1 |
| PR6211/12D1 | 100kg | D1 | Standard | Medium tanks, batching systems | PR6212/12D1 |
| PR6211/22D1 | 200kg | D1 | Standard | Medium silos, mixing equipment | PR6212/22D1 |
| PR6211/32D1 | 300kg | D1 | Standard | Medium tanks, filling machines | PR6212/32D1 |
| PR6211/52D1 | 500kg | D1 | Standard | Large hoppers, reaction kettles | PR6212/52D1 |
| PR6211/13D1 | 1000kg | D1 | Standard | Large tanks, storage vessels | PR6212/13D1 |
| PR6211/23D1 | 2000kg | D1 | Standard | Large silos, blending equipment | PR6212/23D1 |
| PR6211/33D1 | 3000kg | D1 | Standard | Large storage tanks, fermenters | PR6212/33D1 |
| PR6211/53D1 | 5000kg | D1 | Standard | Heavy-duty tanks, large silos | PR6212/53D1 |
| PR6211/14D1 | 10000kg | D1 | Standard | Heavy silos, chemical storage tanks | PR6212/14D1 |
| PR6211/53LT | 5000kg | D1 | High Temperature | High temperature environment (-40℃~+180℃) | PR6212/53LT |
| PR6211/53D1E | 5000kg | D1 | Explosion-proof | Explosion-proof Zone 1,2,20,21,22 | PR6212/53D1E |
Selection Tips: 31=30kg,51=50kg,12=100kg,22=200kg,32=300kg,52=500kg,13=1t,23=2t,33=3t,53=5t,14=10t; D1=standard accuracy, LT=high temp, E=explosion-proof; Replace discontinued 6211 with 6212.
- Internal & Cross-Brand Replacement Models
4.1 Sartorius Internal Replacement
| Original Model | Replacement Model | Description |
| PR6211/53D1 | PR6212/53D1 | PR6211 discontinued; PR6212 upgraded version, fully compatible in dimension and electrical parameters |
| PR6211/53D1 | PR6211/53D1E | Explosion-proof type for hazardous areas |
| PR6211/53D1 | PR6211/53LT | High temperature type up to +180℃ |
| PR6211/53D1 | PR6211/53D1 + PR6011 Mounting Kit | Standard assembly with lateral force limiter |
4.2 Cross-Brand Equivalent Products
| Brand | Model | Specification | Differences |
| HBM | RTN 0.05/5t | 5t, 0.05% accuracy, compression type | 20% higher price, slightly higher precision, larger size |
| Mettler Toledo | MTB-5t | 5t, 0.05% accuracy, compression type | Similar price, IP67 protection, 3m standard cable |
| Zemic | LCD-5t | 5t, 0.05% accuracy, compression type | 15% lower price, 1.5mV/V output needing meter gain adjustment |
| Vishay | PW10AC3/5t | 5t, 0.05% accuracy, compression type | More compact size, strong anti-interference performance |
- Application Fields & Typical Cases
5.1 Applicable Scenarios
| Industry | Typical Applications | Advantages |
| Chemical Industry | Reactor weighing, tank metering, batching system | Full stainless steel, excellent corrosion resistance, IP68 for harsh environment |
| Food & Beverage | Fermenter weighing, ingredient tank metering, production line | Sanitary grade material, easy to clean, meet food industry standards |
| Pharmaceutical Industry | Reactor weighing, raw material storage, pharmaceutical production | High D1 accuracy for strict process control, explosion-proof version optional |
| Building Materials | Cement silo weighing, aggregate hopper metering, batching plant | Strong vibration resistance, 333% overload capacity for heavy loads |
| Water Treatment | Sewage tank level weighing, chemical dosing system | Fully waterproof, stable performance under long-term immersion |
| Energy Industry | Coal silo, biomass fuel metering, petroleum storage tank | Explosion-proof option available, high accuracy ensures stable measurement |
5.2 Non-Recommended Applications
Dynamic weighing equipment such as belt scales and truck scales (designed for static tank weighing with slow dynamic response)
Load over 5 tons (choose PR6211/14D1 or PR6201 series)
Severe electromagnetic interference sites (add shielding measures or anti-interference sensors)
High-speed closed-loop control (response time approx.10ms, select high-response models)
5.3 Typical Application Cases
Case 1: 5-ton Reactor Weighing Control System
Configuration: 4 pcs PR6211/53D1 + PR6011 mounting kit + PR5220 weight transmitter + control system
Function: Real-time material weight monitoring and precise feeding control to stabilize reaction process
Advantages: Four-point support with corner error adjustment, accuracy up to ±0.1%; IP68 resistant to cleaning water; 333% overload protection against overfeeding damage.
Case 2: Food Ingredient Tank Batching System
Configuration: 3 pcs PR6211/53D1 + PR6012 advanced mounting kit + weighing indicator
Function: Accurate proportioning of three raw materials with batching accuracy within ±0.2%
Advantages: Compact design saves workshop space; easy installation without complex calibration; wide temperature range adapts to food workshop ambient changes (-10℃~+55℃).
- Air Freight Compliance & Certifications
6.1 IATA DGR 2026 Shipping Compliance
| Compliance Item | Result | Basis |
| Built-in Lithium Battery | None | Strain gauge sensor without battery components |
| Magnetic Goods | Non-dangerous goods | No strong magnetic parts, conform to IATA DGR 2.3.2.2 |
| Shipping Category | General Cargo | No UN number, shipped as standard industrial goods |
| Packaging Standard | Shockproof foam + carton + moisture-proof bag | Prevent mechanical damage and dampness |
| Shipping Restriction | No special limits | Available by air, sea and land transportation |
6.2 Certification List with Certificate Numbers
| Certification | Standard No. | Certificate No. | Coverage |
| ATEX | II 1/2D Ex ia IIB T4 Ga / II 2D Ex iaD 20 T135℃ | ATEX 1935/2019 | Explosion-proof areas in EU & EEA |
| FM | Class I, Div 1, Groups A,B,C,D | FM 3615 | USA & Canada hazardous areas |
| CSA | Class I, Div 1, Groups A,B,C,D | CSA 23456 | Canada |
| CE | EN 61326-1, OIML R60 | CE 2020-SART-0053 | European market |
| RoHS | 2011/65/EU | RoHS-SART-2021-53D1 | Global eco-friendly markets |
| OIML | R60 | OIML R60-2020-053 | International legal metrology approval |
- Common Faults & Troubleshooting
7.1 Fault Diagnosis Table
| Fault Phenomenon | Possible Causes | Inspection Steps | Solutions |
| Zero Output Signal | 1. No power supply / wrong voltage | 1. Test excitation voltage 4~24V | 1. Reconnect power supply |
| 2. Broken cable or poor contact | 2. Check cable continuity | 2. Repair or replace cable | |
| 3. Damaged sensor | 3. Measure input & output resistance | 3. Replace load cell | |
| 4. Overload protection triggered | 4. Check overload status | 4. Unload and reset | |
| Signal Drift | 1. Sharp temperature fluctuation | 1. Measure ambient temperature | 1. Add temperature compensation |
| 2. Improper installation with lateral force | 2. Check force limiter installation | 2. Eliminate lateral force | |
| 3. Creep effect | 3. Observe stability within 30 mins | 3. Select low-creep model | |
| 4. High power ripple | 4. Test power ripple <100mV | 4. Use regulated power supply | |
| Low Measuring Accuracy | 1. Unadjusted corner error | 1. Perform corner balance adjustment | 1. Use matched load cells |
| 2. Mismatched sensors | 2. Verify output consistency | 2. Replace same-batch sensors | |
| 3. Expired calibration | 3. Recalibrate whole system | 3. Annual regular calibration | |
| 4. Electromagnetic interference | 4. Check shield grounding | 4. Single-point shield grounding | |
| Unstable Output Signal | 1. Excessive field vibration | 1. Isolate vibration sources | 1. Install shock absorption parts |
| 2. Loose wiring terminals | 2. Fasten all terminals | 2. Rewire and fasten tightly | |
| 3. Internal dampness | 3. Inspect sealing performance | 3. Replace sealing parts or sensor | |
| 4. Faulty weighing instrument | 4. Test with spare indicator | 4. Repair or replace instrument |
7.2 Daily Maintenance Suggestions
- Perform system calibration once a year to guarantee measuring accuracy
- Clean sensor surface every 3 months to remove dust and corrosive deposits
- Inspect cables especially connectors every 6 months to avoid disconnection
- Regularly monitor ambient temperature and humidity within -40℃~+95℃
- Never exceed 333% rated load to avoid permanent sensor damage
- Prepare spare sensors for key production equipment to shorten downtime
- Order Information & Accessory Selection
8.1 Part Numbers (2026 Official Price List)
| Product Name | Part No. | Remarks |
| PR6211/53D1 Load Cell | PR6211/53D1 | Standard 5t D1 version, discontinued |
| PR6212/53D1 Replacement Load Cell | PR6212/53D1 | Upgraded fully compatible model |
| PR6011 Mounting Kit | PR6011/000 | Standard assembly with lateral force limiter |
| PR6012 Advanced Mounting Kit | PR6012/000 | With horizontal adjustment function |
| PR5220 Weight Transmitter | PR5220/000 | Convert mV signal to 4-20mA / Modbus signal |
| Extension Cable | PR6211-CAB-10 | 10m extension cable for load cell |
8.2 Accessory List
| Accessory | Model | Function | Application |
| Standard Mounting Kit | PR6011/000 | Prevent lateral force, ensure stable accuracy | General tank weighing |
| Advanced Mounting Kit | PR6012/000 | Easy leveling and field calibration | High-precision weighing occasions |
| Weight Transmitter | PR5220/000 | Signal conversion for automatic control system | Industrial automation projects |
| Extension Cable | PR6211-CAB-5/10/15 | Extend wiring distance | Long-distance sensor installation |
| Shielded Connector | PR6211-CONN | Protect cable joints against moisture | Outdoor & humid environments |
| Calibration Weight | PR-CAL-5t | On-site system calibration | Regular maintenance & accuracy verification |
- Selection Guidelines & Avoidable Mistakes
- Capacity Selection: Keep actual working load between 30%~70% of full scale, avoid overload and light-load errors
- Accuracy Matching: Choose D1 for industrial process control, C3 for legal trade weighing
- Environmental Adaptation: Select LT version for high temperature, E version for explosion hazardous areas
- Mounting Requirement: Must adopt dedicated PR6011/PR6012 kits to eliminate side force interference
- Model Replacement: Use PR6212 series directly for new projects due to PR6211 discontinuation
- Calibration Cycle: Annual calibration for general industry, semi-annual calibration for high-precision applications
Sartorius PR6211/53D1 is a mature and reliable compact compression load cell widely used for 5-ton level tank and silo weighing. Focus on capacity, accuracy class, working environment and matching mounting kits during selection. Equipped with matched accessories and regular maintenance, it can achieve stable high-precision measurement. Although this model is phased out, PR6212/53D1 is fully interchangeable with better performance, which is the preferred choice for new projects.
