I. Model Analysis (330854-AAA-BB-CC)

330854: 3300 XL 25mm System Extension Cable (Special for Differential Expansion / Large Displacement)

080: Cable Length → 8.0m (8 meters)

24: Cable Type → High Temperature FluidLoc Non-Rigid (−40°C to +120°C)

05: Certification → Explosion-proof Certification (ATEX/IECEx), applicable to Hazardous Zones (Oil/Gas / Chemical)

II. Core Parameters

1. Electrical and Compatibility

Compatible System: 3300 XL 25mm (Probe 330851, Preamplifier 330850)

Standard Sensitivity: 20mV/mil (0.787V/mm)

Linear Range: 0 to 12.7mm (500mil)

Connector Specification: Special coaxial connector, waterproof, dustproof, anti-electromagnetic interference

Shielding: Double-layer shielding, single-ended grounding, reduces ground circulation

2. Mechanical and Environment

Cable Material: FluidLoc High Temperature Elastomer, Oil-resistant, Aging-resistant, Hydrocracking-resistant

Length: 8.0m (Non-segmentable / Jointable)

Outer Diameter: ≈6mm; Minimum Curvature Radius: ≥50mm

Protection Grade: IP67

Operating Temperature: −40°C to +120°C (Cable)

Certification: Explosion-proof (05), applicable to Zone 0/1/2 Hazardous Zones

Weight: ≈0.34kg

III. System Kit (Must Match)

1. Complete Set (25mm Differential Expansion System)

Probe: 330851-XXX-XXX-XXX (25mm, Side / Tail Outlet)

Extension Cable: 330854-080-24-05 (8m, High Temperature Non-Rigid, Explosion-proof)

Preamplifier: 330850-080-05 (8m System, Explosion-proof)

Monitoring Module: 3500/45M (Differential Expansion / Axial Displacement), 3500/40M (Vibration)

2. Applicable Scenarios

✅ Turbine / Generator ** Differential Expansion (DE) ** Monitoring (Most Commonly Used)

✅ Large Diameter (＞300mm), Large Displacement (0 to 12.7mm) Measurement

✅ Long Distance Wiring (8m), High Temperature Environment, Explosion Hazard Zone

✅ Hydrogen-cooled Generator, Sealed Unit, Oil-Gas Chemical Equipment

IV. Installation and Calibration Key Points

Length matching: The 8m cable must be paired with an 8m probe + 8m preamplifier; do not mix 4m/12m.

Explosion-proof installation: The hazardous area must comply with ATEX/IECEx standards, with joint sealing and single-ended shielding grounding.

Cable laying: Avoid crushing / sharp bends; curvature ≥ 50mm; keep away from high-temperature heat sources (> 120°C).

Gap calibration: The working gap of the 25mm system is usually 2-10mm, corresponding to voltage -2V to -10V (preamplifier output).

V. Common Confusions Clarified

❌ Not 8mm/50mm cable: 330854 is exclusively for the 25mm differential expansion system, and cannot be mixed with 330930 (8mm) or 330876 (50mm).

❌ Not probe / preamplifier: The probe is 330851 (with sensor head), and the preamplifier is 330850 (blue box). This is the intermediate connection cable.

✅ Dedicated for differential expansion: The linear range of the 25mm system is 12.7mm, specifically designed for large-scale units **differential expansion (DE)**, and cannot be used for small gap vibrations.