A6312 Emerson Rotation Monitor | Speed & Phase Detection

Emerson A6312 Speed and Key Monitor: Essential Rotation Protection

Monitor speed, direction, and phase with precision. The A6312 module provides reliable rotation monitoring for critical machinery. This dual-channel monitor detects zero speed, reverse rotation, and phase changes to prevent equipment damage.

Why Choose This Monitor?

• Redundant Operation: Automatic switchover between primary and backup sensors
• Multiple Measurements: Speed, phase, zero speed, and rotation direction
• Hot-Swappable Design: Replace modules without system shutdown
• Compact Size: 3U single-slot module saves cabinet space
• API 670 Compliant: Meets industry protection standards
• Self-Diagnostics: Continuous monitoring of all components

Technical Specifications

• Brand & Model: Emerson A6312 Speed and Key Monitor
• Input Type: Eddy Current Differential
• Compatible Sensors: PR6422, PR6423, PR6424, PR6425
• Speed Range: 0-65,535 RPM
• Frequency Range: 0-20,000 Hz
• Input Voltage: 0 to ±27.3 VDC
• Measuring Range: 2V to 30V (adjustable)
• Output Signals: 4-20 mA, TTL Pulse, 0-20 kHz
• Accuracy: ±1% of full scale
• Sensor Supply: -26.75 VDC, 35 mA max
• Operating Temperature: 0° to 65°C (32° to 149°F)
• Power Consumption: 6W maximum at 24 VDC

Easy Installation

The A6312 module fits into AMS 6500 chassis. One slot holds one module. Up to 14 modules fit in standard 19-inch rack. Works with eddy current sensors for accurate rotation monitoring.

System Compatibility

This A6312 monitor works with Emerson PR642x sensor series. Integrates with PlantWeb architecture. Connects to Ovation and DeltaV control systems. AMS software provides advanced diagnostics.

Quality Standards

Designed to meet EMC standards EN50081-1 and EN50082-2. Tested for vibration and shock resistance. Built for tough industrial environments.

Package & Support

Package Includes: One A6312 monitor module

Warranty: Complete 12-month protection against defects

Shipping Methods: FedEx, UPS, DHL available globally

Common Questions

What is redundant mode?

The A6312 can automatically switch to a backup sensor if the primary fails. This ensures continuous monitoring without interruption.

What targets can I use?

Use toothed wheels, keyways, or gears for speed measurement. For phase measurement, use once-per-revolution targets only.

Why monitor rotation direction?

Reverse rotation can damage pumps and compressors. Early detection prevents catastrophic failure and downtime.

How does zero speed detection work?

The module measures time between pulses. If no pulses occur within set time (1-1700 seconds), it triggers zero speed alarm.

Can I monitor two machines?

Yes, the dual channels can monitor separate machines or provide redundant monitoring for one critical machine.