Basic Information

Part of the 7200 series (coinciding with 72870‑01/‑03), it has been discontinued (EOL), available only as second-hand / refurbished / in stock.

Structure: 19-inch rack, approximately 3U high; without head (different from RVXY‑II), board-mounted, front and rear wiring.

Positioning: Pure hardware monitoring, used for shaft vibration, shaft displacement, eccentricity, and expansion difference protection of rotating machinery.

Function and Positioning

Dual-channel (X/Y) independent monitoring: Receives input from the 3300 series eddy current probes.

Measurement: Radial vibration, axial displacement, eccentricity, expansion difference.

Output: Each channel has an alarm (Alert) + danger (Danger) relay, direct connection to shutdown interlock, independent of software.

Features: No local display, reads through the system frame or upper computer; high reliability, fast response. Core parameters

Channel: 2 paths (X/Y)

Input: Eddy current sensor (e.g. 33010x)

Range: Commonly 0–250 μm (0–10 mil)

Accuracy: ±1% of full scale

Output: Relay contacts (alarm / danger)

Power supply: ±15V DC (7200 rack power supply)

Status:， spare parts circulation

Difference from 72870‑01/‑03 (quick distinction)

72869‑02 (RVDP-II)： No dial， board-mounted， for displacement / expansion difference mainly.

72870‑01/‑03 (RVXY-II)： With pointer dial， for vibration mainly.

The two have similar functions and compatible pins， and are often used interchangeably.

Compatibility and substitution

Compatibility： 7200 rack， 72870 backplane， 3300 series eddy current probe

Substitution： 3500/40 (72951‑xx) 4-channel vibration monitoring module (mainstream upgrade model of 3500 system