TRICONEX 3720
Key Parameters & Specifications (Consolidated)
| Category | Specification | Notes (Critical Distinctions) |
|---|---|---|
| Manufacturer | ABB Process Automation | Pressductor® tension measurement lineage; PFTL 101B 2.0kN=base model+rated capacity |
| Product Type | Shear beam load cell (web tension sensor) | Pressductor® technology; not a controller or I/O module |
| Rated Capacity (Nominal Load) | 2.0 kN (≈450 lbf) | Full-scale measurement range; do not exceed rated overload limits |
| Accuracy & Linearity | ±0.25% FSO (typical); linearity ≤0.1% FSO | Precision class for closed-loop tension control |
| Output Signal | Standard: mV/V (strain gauge bridge); optional 4–20 mA (with signal conditioner) | mV/V requires external excitation & conditioning; 4–20 mA is a system-level option |
| Excitation Voltage | 10–15 V DC/AC (typical); consult datasheet for exact range | Stable excitation ensures accuracy; use regulated supply |
| Construction & Material | Stainless steel (316L typical); laser-welded hermetic seal | Corrosion-resistant for wet/chemical environments |
| Protection Rating | IP67 (dust-tight, protected against temporary immersion) | Suitable for washdown and harsh industrial zones |
| Operating Temperature | -20 °C to +70 °C (standard); -40 °C to +80 °C (extended range variants) | Confirm with unit label for your specific unit |
| Mounting | Shear beam bolted mounting (flange/foot mount per ABB drawings) | Use torque values per ABB guidelines to avoid preload errors |
| Overload Capacity | Typically 150% of rated capacity (measurement direction); transverse overload rated per ABB specs | Prevents damage from process spikes; use mechanical stops for extreme transients |
| Weight | ~0.4–0.5 kg (typical; per unit label) | Net weight of the load cell; mounting hardware not included |
| Compliance & Certifications | ABB Pressductor safety & EMC standards; RoHS, CE (region-dependent) | Verify local certifications for regional deployment |
Critical Notes (Avoid Common Mistakes)
- Output Type: Standard is mV/V (strain gauge bridge); 4–20 mA requires an external signal conditioner or a pre-configured variant. Do not mix signal types without proper conditioning.
- Excitation: Use a regulated 10–15 V DC/AC supply; voltage drift degrades accuracy. Install surge protection and filtering in high-EMI environments.
- Mounting Preload: Avoid excessive preload during installation; follow ABB’s torque and alignment guidelines to ensure shear force is applied along the sensing axis.
- Overload Protection: Operate within rated capacity and overload limits; add mechanical stops for shock loads to prevent permanent damage.
Recommendations
- Installation: Mount on a rigid base with proper alignment to the web path; ensure shear force is applied axially. Use shielded cables for mV/V signals and ground per ABB’s wiring diagrams.
- Commissioning: Verify excitation voltage, zero balance, and linearity across the operating range; calibrate with known weights or tension references before putting into service.
- Maintenance: Perform quarterly checks on signal stability, zero drift, and cable integrity; clean regularly in dusty/washdown environments; replace with ABB-approved spares (same model/capacity) if drift or damage occurs.