I. Model Positioning

3500/50E: Enhanced version, full height, dual channels, speed + phase alignment + direction / acceleration

3500/50M: Standard version, similar functions, slightly lower accuracy

Application: Turbomachinery, gas turbines, compressors, fans, etc. for speed / zero speed / reverse / overspeed protection

II. Core Parameters (3500/50E)

1. Channels and Inputs

Channels: 2 independent (CH1/CH2)

Sensors: Suitable for electro-inductive probes (3300XL) or magnetic pickups

Input voltage: +10V ~ -24V

Input impedance: 20kΩ (standard)

Frequency range: 0.0167Hz ~ 20kHz (corresponding to 1rpm ~ 99,999rpm)

Pulses per revolution: 1 ~ 255

2. Measurement Accuracy

Speed accuracy: ≤100rpm: ±0.1rpm; 100~10,000rpm: ±0.1% reading

Resolution: 0.1rpm

Update rate: ≈100ms

3. Monitoring Functions (Software Configuration)

Speed monitoring: normal / alarm / dangerous value

Zero speed detection: shutdown judgment

Reverse detection: turn error alarm

Acceleration monitoring: speed increase / decrease protection

Peak retention: highest speed / reverse count memory

4. Electrical and Mechanical

Power supply: –24VDC (±10%)

Power consumption: ≈5.8W

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

Operating temperature: –20℃ ~ +65℃

Hot-swappable: supported, online replacement allowed

III. Key Features

Enhanced anti-interference: E version optimizes filtering, more stable in industrial strong electromagnetic environment

Phase alignment output: Backplane output Keyphasor, for phase analysis by vibration module

Overspeed protection: Configurable three-out-of-two logic, meeting API 670 requirements

Single module multi-purpose use: No need for additional phase alignment card, saves slots

IV. Typical Accessories

Probes: 330104/330105/330108 electro-inductive

Extension cables: 330130 (5m/9m)

Accessories: 3500/40M (vibration), 3500/91 (EGD communication)

V. Differences from 3500/50M

Accuracy: 50E higher (±0.1% vs ±0.2%)

Temperature range: 50E wider (-20~+65℃)

Anti-interference: 50E enhanced EMI filtering

Price: 50E slightly more expensive, new projects prefer E