Intelligent λ (lambda) control algorithm

Dual-redundant oxygen sensor inputs

Adaptive tuning capability

Integrated safety interlocks

Comprehensive diagnostics

Modbus communication interface

Technical Parameters
1. General Specifications

Model: MFR300 (8444-1109)

Enclosure: NEMA 4X (IP66)

Dimensions: 350 × 250 × 100 mm (13.8 × 9.8 × 3.9 in)

Weight: 3.2 kg (7 lbs)

Operating Temperature: -30°C to +60°C

Humidity Range: 5-95% non-condensing

2. Electrical Specifications

Power Supply: 24 VDC ±10%

Power Consumption: 35W max

Analog Inputs:

2× 0-10V (oxygen sensors)

4× 4-20mA (process variables)

Digital Inputs: 8× 24VDC (status/control)

Relay Outputs: 6× SPDT (5A @ 30VDC)

Communication: RS-485 Modbus RTU

3. Performance Specifications

Control Range: λ = 0.7-2.5 (adjustable)

Control Accuracy: ±0.5% of setpoint

Response Time: <250ms

Measurement Resolution: 0.1% O₂

Calibration Interval: 12 months recommended

4. Sensor Specifications

Supported Sensors:

Zirconia oxygen sensors

Paramagnetic O₂ analyzers

Laser-based gas analyzers

Sensor Input Range: 0-25% O₂

Sensor Excitation: 24VDC @ 1A max

Typical Applications
Lean-burn gas engines

Biogas power generation

Cogeneration plants

Gas compressor stations

Industrial furnace control

Emission-controlled facilities

Configuration & Interface
Intuitive HMI with color display

Password-protected access levels

Event logging (1000 events)

Woodward Toolkit compatible

Field-adjustable control parameters

Certifications & Approvals
CE Marked

UL Listed

ATEX Option Available

EPA Compliance (when used with approved systems)