Model Explanation

330780: 11mm XL Series Preamplifier

91: System total length 9.0m, DIN rail installation

00: No explosion-proof certification, ordinary industrial grade

Core Parameters (Electrical)

Compatible probe: 3300 XL 11mm (as 330781)

Sensitivity: 3.94 V/mm (100 mV/mil)

Linear range: 0.5 - 4.5 mm (4mm effective linear)

Frequency response: 0 - 8 kHz

Power supply: -17.5 - -26 VDC (without safety barrier)

Output: Gap voltage (proportional to gap)

Mechanical and Environmental

Installation: DIN rail

Shell: Cast aluminum, blue

Protection: IP65

Operating temperature: -40℃ - +85℃

Explosion-proof: None (00)

System Compatibility (9m Complete Set)

Probe: 330781-91-00 (11mm, 9m)

Extension Cable: 330784-091-11-00

Monitoring Module: 3500/42 (shaft vibration), 3500/45 (displacement), etc.

Installation Tips

The total length of the entire system must be strictly 9.0m (probe + cable + internal preamplifier)

Single-ended grounding of shielded wire (on the preamplifier side)

For non-explosion-proof steam turbines, fans, compressors, etc. shaft vibration/positioning monitoring.