I. Model Description (Common Format)

3500/42M: Standard type, most commonly used

3500/42-02-R0: With internal terminals, universal type

3500/42-04-00: 4 × displacement / acceleration channels

Part Number Examples: 176449-02 (front panel), 128229-01 (back panel)

II. Core Functions

4 independent channels: Each channel is programmable, supporting eddy current (displacement), speed, and acceleration sensors.

Monitoring Parameters:

Radial vibration (peak-to-peak, 1X/2X, band-pass)

Axial displacement / thrust position, differential expansion, eccentricity

Casing vibration (velocity / acceleration)

Over-speed, reverse rotation, zero speed (combined with phase)

Alarm Logic: Each channel has three levels of high / high-high / dangerous, supports triple-out-two interlock, complies with API 670.

III. Key Parameters (3500/42M)

Sensor Compatibility: 3300XL eddy current, 190501 speed, IEPE acceleration

Frequency Range: 0.5Hz - 10kHz

Measurement Accuracy: ±2% of full scale

Resolution: 0.1μm (displacement)

Power Supply: –24VDC, power consumption ≈ 7W

Temperature: –20℃ - +65℃

Hot Swap: Supported

Size: Full-height module (same as 3500/40M)

IV. 3500/42 (42M) vs 3500/42E (Enhanced) Table

Comparison item 3500/42 (42M, standard) 3500/42E (Encore, enhanced)

Hardware platform Classic New generation Encore

Accuracy ±2% FS ±1% FS

Temperature range –20 to +65℃ –40 to +70℃

Anti-interference Standard EMI filtering Enhanced EMI filtering

Diagnostic capability Basic alarm Sensor break / short circuit / drift self-check

Channel configuration Partially fixed 4 channels fully programmable

Status Out of production / reduced quantity Preferred for main projects, especially for new projects

V. Typical applications and accessories

Equipment: Steam turbines, compressors, fans, pumps, generators

Industry: Power, petrochemical, metallurgy, oil and gas

Accessories:

Probe: 330104/05/08 (electro-vibration)

Extension cable: 330130 (5m/9m)

Frame: 3500/22 (power / interface), 3500/50E (phase alignment)

VI. Selection suggestions

New projects: Directly select 3500/42E, with stronger accuracy, stability and diagnostic capabilities

Old project spare parts: Can purchase 3500/42M (some models still in stock)

Channel requirement: 4 channels → 42M/42E; 2 channels → 3500/40M