Emerson EPRO A3311/022-000 | Machinery Speed & Phase Transmitter

Emerson EPRO A3311/022-000 Speed and Key Phase Transmitter

Product Overview

The Emerson EPRO A3311/022-000 transmitter provides accurate speed and key phase monitoring for critical rotating machinery. Moreover, it supports advanced diagnostics such as order tracking and phase analysis, making it a reliable component in high-performance condition monitoring systems. The device works seamlessly with EPRO eddy-current probes and CON021 interface modules, ensuring stable and repeatable performance across demanding industrial environments.

Technical Specifications

General

• Manufacturer: Emerson / EPRO

• Model: A3311/022-000

• Device Type: Speed and Key Phase Transmitter

• Probe Compatibility: EPRO eddy-current displacement probes (PR6422 series)

• System Interface: Compatible with CON021 modules

Measurement Performance

• Speed Range: Configurable; up to 65,535 rpm

• Frequency Range: 0–20 kHz

• Linearity Error: 0.25% at 25 °C (basic); up to –6% depending on probe

• Temperature Stability: <0.08% per 10 K

• Long-Term Drift: ≤1% of measuring range

Outputs

• 0/4–20 mA analog outputs proportional to speed

• Buffered dynamic outputs: 2–10 V

• Keyphasor pulse output for phase tracking

Electrical & Environmental

• Power Supply: 18–31.2 VDC

• Consumption: 2.5 W

• Sensor Input Connector: LEMO

• Operating Temperature: –20 °C to +65 °C

• Shock Resistance: 20 g peak

• Protection Class: IP65

Physical Data

• Weight: 1300 g

• Country of Origin: USA

FAQ

Q: Which probes are compatible with the A3311/022-000?
A: It works with EPRO eddy-current displacement probes such as the PR6422 series.

Q: What is the maximum measurable shaft speed?
A: The transmitter supports speeds up to 65,535 rpm depending on the configuration.

Q: Does the device provide a Keyphasor signal?
A: Yes, it outputs a stable Keyphasor pulse for advanced vibration diagnostics.

Q: Can it be installed in harsh conditions?
A: The IP65 sealing ensures reliable performance in dusty or damp industrial areas.

Q: What type of outputs are available?
A: It provides 0/4–20 mA outputs, buffered dynamic voltage outputs, and alarm relays.