I. Model Breakdown (330901-A-B-C-D-E)  

330901: 3300 NSv, 1/4-28 UNF thread (fine pitch, small diameter)  

00: Non-threaded length 0.0 in (0 mm) (fully threaded installation)  

13: Housing total length 1.3 in (33 mm) (ultra-short housing)  

05: Cable length 0.5 m (50 cm)  

02: ClickLoc® quick-connect, standard unarmored cable  

00: No explosion-proof certification (for general environments)  

II. Key Specifications  

1. Mechanical Specifications  

Probe Thread: 1/4-28 UNF (≈6.35 mm)  

Non-threaded Length: 0 mm (fully threaded)  

Housing Total Length: 33 mm (ultra-short)  

Cable: 0.5 m, unarmored (FEP insulation)  

Connector: ClickLoc® coaxial quick-connect (gold-plated)  

Minimum Bending Radius: ≥25 mm  

Weight: ≈0.15 kg  

2. Electrical Characteristics  

Principle: Eddy current (non-contact)  

Linear Range: 0.05–5 mm (compatible with 4140 steel)  

Sensitivity: 200 mV/mm (±5%)  

Frequency Response: 0–10 kHz  

Impedance: 50 Ω (matched to conditioner)  

3. Environmental Conditions  

Temperature: -40°C to +120°C  

Protection: IP67  

Explosion Protection: None (00)  

Vibration Resistance: 10 g (10–1000 Hz)  

III. System Compatibility (Must Be Used as a Complete Set)  

Probe: 330901-00-13-05-02-00 (0.5 m, unarmored, non-explosion-proof)  

Extension Cable: 330930-040-00-00 (4.0 m, unarmored, non-explosion-proof)  

Conditioner: 330980-50-00 (total length = 0.5 + 4.0 = 4.5 m)  

Monitoring Rack: 3300/3500 TSI  

Modules: 3500/40M (vibration), 3500/50M (key phase)  

IV. Series Comparison (1/4-28 Thread)  

Table  

Model | Housing Length | Cable Length | Armored | Explosion-Proof | Application  

---|---|---|---|---|---  

330901-00-13-05-02-00 | 1.3" | 0.5 m | ❌ | ❌ | Ultra-short housing + small shaft + general environment  

330901-00-70-10-02-00 | 7.0" | 1.0 m | ❌ | ❌ | Long housing + small shaft + general environment  

330901-00-70-10-02-05 | 7.0" | 1.0 m | ❌ | ✅ | Long housing + small shaft + hazardous area  

V. Installation Notes  

Ultra-short Housing: 33 mm housing suitable for deep holes <40 mm or locations with limited side access.  

Small Thread: 1/4-28 fine thread compatible with M6–M7 mounting holes, replacing standard 8 mm probes.  

Length Matching: Probe 0.5 m + extension 4.0 m = conditioner 4.5 m—must be strictly matched.  

Unarmored Cable: Avoid mechanical pulling or friction; secure routing at intervals ≤0.5 m.  

Grounding: Shield layer grounded only on the conditioner side to prevent circulating interference.