Typical technical parameters

Channels: Multiple channels (commonly 4 channels, depending on configuration)

Adapter sensors: 3300XL eddy current probe (8mm/5mm/11mm)

Input signals: Eddy current displacement / vibration signal, key signal

Output: 4–20mA analog quantity, relay alarm contacts (warning / danger)

Power supply: Rack backplane negative voltage (typical −18 ~ −24VDC)

Operating temperature: 0°C ~ +60°C; Storage: −40°C ~ +85°C

Accuracy / Linearity: ±1% FS; Frequency response: 0~10kHz (typical)

Structure: Standard full-height card, metal enclosure, dust-proof and anti-interference

Main functions

Vibration / displacement monitoring: Radial vibration, axial displacement, temperature difference, eccentricity, speed / phase

Two-level alarm: Warning (Alert), Danger (Danger), relay contact output

Analog quantity upload: 4–20mA connected to DCS/PLC, real-time trend and recording

Configuration and diagnosis: Rack software configuration range, alarm value; On-board self-diagnosis and status LED Application scenario

Electricity: Steam turbine generator sets, feedwater pumps, fans

Petroleum: Centrifugal compressors, screw machines, pump sets

Metallurgy / Air Separation: Large motors, expanders, gearboxes

Key points for installation and wiring

Insert into the 3500/7200 rack slot, lock to ensure reliable bus contact

For probes / extension cables / preamplifiers, correspond to the channels, separate strong and weak current wiring

Alarm dry contacts and 4–20mA are respectively connected to the interlock and DCS systems

Maintenance and common faults

Daily: Observe the panel LEDs (power / normal / alarm), confirm stable values

Regularly: Tighten terminals, verify alarms, test interlocks, check cable aging

Common problems:

No data: Check backplane power supply, slot contact, preamplifier / probe lines

Drift / jump: Inappropriate probe gap, poor grounding, cable damage

False alarms: Incorrect threshold setting, interference, oxidation of relay contacts