8 LINE Heavy-Duty Weighbridge Junction Box 8 Channels
Standard 16m, 18m, and 20m truck scales (8-loadcell configuration) across all Iraqi governorates.
Summing for 6, 7, or 8 Load Cells
IP68 Rated (Engineered for Outdoor Pit Installation)
Precision Metrology & Electrical Specifications
SPEC VERSION: 2026.1 / CALIBRATION VERIFIED| Structural Architecture | 8-Channel Weighbridge Summing Box |
| Summing Capacity & Load Cell Channels | Summing for 6, 7, or 8 Load Cells |
| PCB Trace Purity & Insertion Loss | Lossless Analog Signal Distribution |
| Summing Homogeneity & Signal Margin | Temp Coefficient < 3 ppm/°C |
| Load Cell Input Resistance Compatibility | Input: Universal 350 Ω to 1000 Ω Compatibility | Output: Matched Output to Weighbridge Indicator |
| Insulation Resistance | ≥ 10,000 MΩ (Tested at 50V DC) |
| Excitation Pass-Through Rating | Up to 24V DC |
| Compensated Temperature Range | -40°C to +85°C |
| Lightning Surge Arrestors & Ground Lug | Safe: Multi-Stage Heavy Lightning Protection (Gas Tubes + Zener Diodes) | Ultimate: Tested to withstand direct 20kV electrical strikes to bridge deck |
| Integral Cable Specification | 9 x Heavy-Duty Stainless/Brass Waterproof Cable Glands |
8 LINE: Enclosure Metallurgy, Waterproof Glands & Pit Ingress Protection
Summing Junction Box ArchitectureCast Aluminum / Heavy 304 Stainless Steel Housing. Engineered for prolonged moisture immersion in scale pits across Iraq.
- Deep-drawn 304 heavy-gauge stainless steel or die-cast aluminum enclosure prevents pit rust.
- Continuous cellular neoprene perimeter gasket maintains elastic seal under years of compression.
- Internal and external captive lid screws made of A2/A4 grade marine stainless steel.
Hermetic barrier preventing water and chemical ingress into Summing for 6, 7, or 8 Load Cells summing terminals.
- Rated IP67 / IP68: Resists submersion in scale pit rainwater without moisture penetration.
- Equipped with 9 x Heavy-Duty Stainless/Brass Waterproof Cable Glands with rubber compression grommets to grip cables securely.
- Equipped with internal breathing membrane plug to equalize vapor pressure while rejecting liquid droplets.
Vibration-Proof Terminals & Corner Trim Convergence
The standard workhorse junction box in Iraqi weighbridge engineering; protects delicate load cells from flash floods and seasonal thunderstorms.
8 LINE: Multi-Channel Parallel Summing, Surge Arrestors & Home-Run Trunk Wiring
Hardware Interface Map| CELL INPUT 1..N | +Exc, -Exc, +Sig, -Sig, Shield (Summing for 6, 7, or 8 Load Cells independent channels) |
| HOME RUN TRUNK | 6-Core shielded connection to Indicator (+Exc, -Exc, +Sig, -Sig, +Sen, -Sen) |
| GDT SURGE STAGE | Multi-Stage Heavy Lightning Protection (Gas Tubes + Zener Diodes) on every excitation and signal conductor |
| TVS DIODE STAGE | High-speed transient voltage suppressors clamp high-frequency line spikes |
| GROUND STUD | Tested to withstand direct 20kV electrical strikes to bridge deck to copper earthing ring (< 1.0 Ohm resistance) |
- Load Cell Compatibility: Universal 350 Ω to 1000 Ω Compatibility provides universal summing matching.
- Insertion Loss: Temp Coefficient < 3 ppm/°C ensures pure millivolt output with zero signal degradation.
- PCB Trace Purity: Lossless Analog Signal Distribution prevents galvanic corrosion between terminal joints.
- Operating Voltage: Up to 24V DC compatible with all commercial indicators.
8 LINE: Regional Field Performance Across Iraq & High Water Tables
COSQC Legal VerificationHigh saline groundwater often submerges weighbridge pits during winter storms. IP68 sealed stainless boxes prevent corrosive water from shorting out cell signals.
Severe electrical ground potential differentials caused by dry soil conditions. Multi-stage 10kA surge arrestors protect sensitive indicators from lightning discharges.
Heavy aggregate haulers create intense platform vibration. Anti-vibration terminal clamps ensure zero signal interruption on high-throughput scales.
Iraqi COSQC Metrological Sealing Compliance
Features mechanical wire-seal hasps on the enclosure lid. COSQC inspectors can apply official legal lead seals after corner-balancing calibration.
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