I. Model Analysis (330900-A-B)

330900: Special installation housing for 3300 XL NSv probe

50: Shell length 5.0 in (127mm)

00: Standard configuration (no special options)

II. Core Parameters

1. Mechanical Specifications

Material: Stainless steel (316SS), corrosion-resistant and durable

Length: 127mm (5.0in)

Compatible probes: 330901 (1/4-28), 330908 (3/8-24) etc. NSv series

Installation method: Threaded fixation (matching probe outer diameter)

Sealing: Viton® O-ring, withstands -40°C to +120°C

Protection level: IP67 (dust and water protection)

Weight: Approximately 0.15kg

2. Application Scenarios

Narrow spaces: Through holes, limited side view, insufficient depth installation positions

Small shaft diameters: Radial vibration/ displacement measurement for shafts with a diameter of < 51mm

Harsh environments: Oil and gas, chemical, power generation, etc. high-temperature / humid / vibration conditions

III. System Compatibility (must be a complete set)

1. Compatible with probes (example)

330901-00-13-05-02-00 (1/4-28 thread, ultra-short housing)

330908-09-51-05-02-05 (3/8-24 thread, short housing explosion-proof)

2. Complete system composition

Probe: 3309XX (NSv series)

Housing: 330900-50-00 (installation fixation)

Extension cable: 330930-XXXX (matching length)

Preamplifier: 330980-50-00 (5m system)

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

IV. Comparison with similar models Table

Model Length Material Compatible Probe Scene

330900-50-00 127mm 316SS 330901/330908 Standard length, universal

330900-70-00 177.8mm 316SS 330901/330908 Long body, deep hole installation

V. Installation Tips

Thread Matching: Ensure that the shell thread is completely consistent with the probe thread (1/4-28 or 3/8-24).

Sealing Installation: The O-ring must be in place to prevent oil or water vapor from entering and affecting measurement accuracy.

Insulation Floating: The shell is insulated from the equipment to prevent ground current interference with the signal.

Length Matching: Probe cable + extension cable = nominal length of the preamplifier (e.g., 0.5 + 4.5 = 5.0m).

VI. Common Confusion Clarification

❌ Not a probe: Probe model is 330901/330908 (with 6-digit code).

❌ Not a preamplifier: Preamplifier model is 330980 series (blue shell).

✅ Shell: Only for mechanical installation, without electronic components.