Multi-Column Load Cells
Compact precision force measurement with bidirectional capability. CR series: 50 kgf to 3 t. ±0.25% accuracy. Tension and compression in a single transducer.
Key Specifications
- Capacity range: 50 kgf (110 lbf) to 3 t (6600 lbf)
- Accuracy: ±0.25% FS (nonlinearity & hysteresis), ±0.05% repeatability
- Bidirectional: Tension and compression measurement without recalibration
- Material: Alloy steel with compact multi-column internal structure
- Operating range: -42 to 93°C (compensated 15–72°C)
- Output impedance: 350Ω; Input: 410±30Ω
- Excitation: 10V DC/AC (15V maximum)
- Shielded 4-conductor cable: 28 AWG, 10 ft (3 m) standard
- Ships from Buffalo Grove, IL
CR Series Quick Specifications
How Multi-Column Load Cells Work
The CR series multi-column load cell architecture distributes applied force across multiple internal load-bearing columns. This redundant load path achieves several advantages over single-column designs: higher stiffness in a compact envelope, excellent lateral load rejection, and consistent accuracy across the full measurement range.
When a tensile or compressive force is applied, the columns compress or extend proportionally. Internal strain gauges bonded to each column detect this deformation and generate an electrical signal proportional to the applied load. The multi-column arrangement means that lateral or off-axis loading has minimal effect on the measurement, making these transducers ideal for test fixtures and process equipment where perfect force alignment cannot always be guaranteed.
The bidirectional nature means a single CR series load cell measures both pulling (tension) and pushing (compression) forces without damage or physical repositioning. The alloy steel construction provides mechanical strength and repeatable output over millions of load cycles.
CR Series Model Comparison
Select the CR model that matches your force measurement range. Each model is available with optional calibration and comes with standard 4-conductor shielded cable.
| Model | Capacity (kgf) | Capacity (lbf) | Output Impedance | Max Excitation | Repeatability |
|---|---|---|---|---|---|
| CR-50KGF | 50 | 110 | 350Ω | 15V DC/AC | ±0.05% FS |
| CR-200KGF | 200 | 440 | 350Ω | 15V DC/AC | ±0.05% FS |
| CR-2T | 2000 | 4400 | 350Ω | 15V DC/AC | ±0.05% FS |
| CR-3T | 3000 | 6600 | 350Ω | 15V DC/AC | ±0.05% FS |
Who Uses CR Series Multi-Column Load Cells
Characterize tensile strength, compression resistance, and elastic properties of metals, polymers, composites, and ceramics. The ±0.05% repeatability ensures reproducible test results across multiple specimens and batches.
OEM designers integrate CR series load cells into universal testers, hydraulic press fixtures, and adhesion testers. The compact multi-column design allows for space-constrained installations without sacrificing accuracy.
Verify production quality by measuring pull force in fastener testing, adhesive bond strength, or mechanical assembly loads. Bidirectional measurement eliminates the need for separate tension and compression transducers.
Selection Guide
Choosing the correct CR series model requires identifying your maximum force requirement and understanding whether your application involves tension, compression, or both.
Step 1: Determine Maximum Load
Identify the maximum force your application will impose. Include a safety margin (typically 20–30% above the measured peak). Example: if you measure a peak load of 150 kgf, the CR-200KGF provides adequate headroom and improved accuracy linearity.
Step 2: Bidirectional Requirements
Confirm whether your application involves tension, compression, or both. CR series load cells are bidirectional by design, so a single transducer handles both directions. This simplifies test fixture design and reduces inventory.
Step 3: Accuracy & Repeatability Needs
The CR series standard accuracy is ±0.25% FS (nonlinearity and hysteresis) with ±0.05% repeatability. For materials testing and calibration work, this specification is sufficient. For reference-grade applications, consult the engineering team about custom compensation or higher-grade certification.
Step 4: Environmental Conditions
Operating temperature range is -42 to 93°C with full accuracy compensation from 15 to 72°C. If your test environment exceeds the compensated range, temperature drift correction may be needed in your measurement system. Verify cable routing and connector protection for the application environment.
Step 5: Electrical Integration
Standard CR series specifications: 350Ω output impedance, 410±30Ω input impedance, 10V DC/AC excitation (15V maximum). These values are compatible with standard strain gauge signal conditioners, data acquisition modules, and force indicators from Transcell and industry suppliers.
Installation and Cable Management
Mounting Orientation
CR series load cells are mounted between the force application point and the measurement structure. Ensure that force flows axially through the transducer. Lateral or bending loads degrade accuracy and can cause mechanical damage. Use appropriate fixtures to center the load.
Cable Specifications
Standard cable is 4-conductor shielded, 28 AWG, polyurethane jacketed, 10 feet (3 meters) in length. For longer cable runs, use low-noise instrumentation cable to minimize noise pickup in sensitive measurement circuits. Shield the cable and ground it at one point only (usually at the signal conditioner).
Connector Protection
CR series load cells ship with standard connectors. In wet or corrosive environments, verify connector material compatibility and consider protective overmolding or sealed conduit. Water ingress can degrade strain gauge performance and create signal noise.
Temperature Compensation
The CR series is temperature compensated across 15–72°C. If operation outside this range is required, a high-precision indicator or data logger with temperature input can apply correction factors. Contact the engineering team for custom temperature compensation strategies.
Full Technical Specifications
| Parameter | Specification | Notes |
|---|---|---|
| Measurement Type | Bidirectional (Tension & Compression) | Single transducer for both load directions |
| Material Construction | Alloy Steel | Multi-column internal design for stiffness and accuracy |
| Nonlinearity | ±0.25% FS | Best-fit straight line, full measurement range |
| Hysteresis | ±0.25% FS | Loading and unloading cycle differential |
| Repeatability | ±0.05% FS | Standard deviation across 10 consecutive loads |
| Output Impedance | 350Ω (nominal) | At excitation frequency |
| Input Impedance | 410 ± 30Ω | Bridge balance point for zero signal |
| Excitation | 10V DC/AC (15V maximum) | Compatible with standard strain gauge indicators |
| Output Range | Nominally ±40 mV/V | Under rated excitation |
| Temperature Operating Range | -42 to 93°C | Full range without damage |
| Temperature Compensated Range | 15 to 72°C | Full accuracy specifications maintained |
| Temperature Coefficient (Zero) | <±0.01% FS/°C | Within compensated range |
| Temperature Coefficient (Sensitivity) | <±0.02% FS/°C | Within compensated range |
| Humidity Operating | 5 to 95% RH (non-condensing) | Sealed connector and cable glands |
| Cable | 4-conductor shielded, 28 AWG, polyurethane | 10 ft (3 m) standard; custom lengths available |
| Connector Type | Standard industrial connector | IP67 rating with sealed mated pair |
| Weight | Varies by model (CR-50KGF ~0.8 kg; CR-3T ~2.1 kg) | Contact factory for exact specifications |
| Certification | Optional calibration per NIST traceable schedule | RoHS compliant, Made in USA |
Standards, Certification & Calibration
Performance Standards
CR series multi-column load cells are designed and manufactured in accordance with industry best practices for strain gauge transducers. The design follows principles established in ASTM E4 (Verification of Force-Measuring Instruments) and ISO 6954 (Industrial Process Measurement and Control – Pressure Transducers).
RoHS & Environmental Compliance
CR series load cells are RoHS compliant. The alloy steel construction is fully recyclable. All electronic components meet restriction-of-hazardous-substances directives.
Calibration & Traceability
Standard CR series transducers ship with basic performance verification. Optional NIST-traceable calibration certificates are available at an additional cost. Calibration is performed on Transcell’s in-house deadweight or force-transfer-standard equipment. Certificate includes: zero-load offset, sensitivity at five points across the measurement range, linearity analysis, and hysteresis measurement.
Recalibration Services
After extended use or suspected damage, CR series load cells can be recalibrated at Transcell’s Buffalo Grove facility. Standard turnaround is 5–7 business days. Contact the engineering team for pricing and scheduling.
Competitive Advantages
Compact Multi-Column Design
Unlike single-column transducers, the CR series distributes load across multiple columns. This achieves superior stiffness and lateral load rejection in a package 25% smaller than traditional designs.
True Bidirectional Measurement
Measure tension and compression with one transducer. No need for separate devices or fixture modifications. Simplifies test equipment design and reduces inventory costs.
Industrial-Grade Accuracy
±0.25% FS accuracy with ±0.05% repeatability meets the demands of materials testing labs and OEM integration without premium pricing.
Wide Temperature Operating Range
-42 to 93°C operational with compensation across 15–72°C. Handles ambient shifts and process heating without external temperature correction in most applications.
Made in USA
Designed and manufactured at Transcell’s Buffalo Grove, Illinois facility. Fast lead times, responsive engineering support, and consistent quality control.
Standard Integration
10V excitation, 350Ω output, and 4-conductor shielded cable are compatible with any standard strain gauge indicator or data acquisition system.
Frequently Asked Questions
Ready to Integrate CR Series Load Cells?
Get a quote or discuss your application requirements with our engineering team. Standard lead times and custom configurations available.
Engineering Design Support
Not sure which model or configuration is right for your application?
Our team provides fixture design consultation, measurement system integration, and validation testing.
sales@transcell.com