I. Model Breakdown (330908-A-B-C-D-E)

330908: 3300 XL NSv probe, 3/8-24 UNF thread (≈9.5mm)

09: Non-threaded length 0.9 in (22.9mm)

51: Total shell length 5.1 in (129.5mm)

05: Cable length 0.5m (with stainless steel armor)

02: With stainless steel armor (tough and wear-resistant)

05: Explosion-proof certification (ATEX/IECEx/CSA), suitable for Zone 0/1/2

II. Core Parameters

1. Mechanical Specifications

Probe thread: 3/8-24 UNF (≈9.5mm)

Non-threaded length: 0.9 in (22.9mm)

Total shell length: 5.1 in (129.5mm)

Cable length: 0.5m (with stainless steel armor)

Connector: ClickLoc® coaxial quick plug (gold-plated contacts)

Minimum bending radius: ≥25mm

Weight: Approximately 0.2kg

2. Electrical Characteristics

Measurement principle: Electromagnetic induction (non-contact)

Linear range: 0.05～5mm (compatible with 4140 steel target)

Sensitivity: 200mV/mm (±5%)

Frequency response: 0～10kHz

Impedance: 50Ω (matched with extension cable / preamplifier)

3. Environment and Explosion-proof

Operating temperature: -40°C～+120°C

Protection level: IP67

Explosion-proof: ATEX/IECEx/CSA (available in hazardous zones)

Anti-vibration: 10g (10～1000Hz)

III. System Compatibility (Must be matched as a set)

Probe: 330908-09-51-05-02-05 (0.5m armored explosion-proof)

Extension cable: 330930-045-01-05 (4.5m armored explosion-proof)

Preamplifier: 330980-50-00 (total length = 0.5+4.5=5.0m)

Monitoring frame: 3300 TSI, 3500 TSI

Monitoring module: 3500/40M (vibration), 3500/50M (phase)

IV. Comparison within the Series (Key Models) Table

Model Total Length of Shell Length of Cable Armor Explosion-proof Applicable Scenarios

330908-09-51-05-02-05 5.1" 0.5m ✅ ✅ Short shell + Narrow space + Hazard zone

330908-09-95-05-02-05 9.5" 0.5m ✅ ✅ Long shell + Narrow space + Hazard zone

330908-09-51-05-00-05 5.1" 0.5m ❌ ✅ Short shell + Hazard zone + No pulling

V. Installation Key Points

Short shell compatibility: The shell is only 129.5mm, suitable for deep holes with extremely short installation depth or locations with limited side view.

Length matching: Probe cable + extension cable = nominal length of the pre-installer (e.g., 0.5 + 4.5 = 5.0m).

Armor protection: With stainless steel armor, suitable for mechanical pulling / friction conditions.

Explosion-proof compliance: 05 certification, can be directly used in oil and gas, chemical Zone 0/1/2 hazardous zones.

Grounding specification: The shielding layer is only single-ended grounded on the front side of the pre-installer to avoid circulating interference.