The EGM-4 is designed for applications that demand portability and a high degree of accuracy and control with minimal maintenance. Our innovative "Auto-Zero" technology ensures long term stability, accuracy and analyzer calibration.

System Features

• High precision, compact CO₂ analyzer
• Lightweight, field portable
• Automatic pressure and temperature compensation
• High resolution LCD display
• Built-in sampling pump
• Voltage, current and digital (RS232) output
• Inputs for external sensors (PAR, %RH, Temperature, Oxygen)
• Visual and audible alarm
• Integral data logging capability

Technical Specifications

• Analysis Method
  Non-dispersive infrared with microprocessor control and linearization.
• Measurement Range
  Standard Ranges:
  0-1,000 ppm (µmol mol-1)
  0-2,000 ppm (µmol mol-1)
  0-5,000 ppm (µmol mol-1)
  0-10,000 ppm (µmol mol-1)
  0-20,000 ppm (µmol mol-1)
  0-50,000 ppm (µmol mol-1)
  0-100,000 ppm (µmol mol-1)
  
  Measurements are automatically corrected for temperature and pressure.
• Accuracy
  1% (limited by calibration gas mixture).
• Linearity
  1% FSD.
• Stability
  Periodic "Auto-Zero" resulting in automatic correction for sample cell contamination, source aging, detector sensitivity variations and pre-amplifier gain changes.
• Sample Pump
  Integral DC Pump
• Air Filter
  Filtered Sample Line (hydrophobic).
• Calibration
  Default value preset in factory (Built-in initialization).
  Automatic calibration via keypad if required.
• CO₂ Control
  High and Low Set points
• Alarm
  Audio Alarm
• Recording
  Manual (by keypress) or automatic at user selected intervals between 1 and 250 minutes.
• Data Storage
  512 K Battery backed RAM (1,000 records).
• Sensor Interface
  Input available for external sensors (i.e. % RH, temperature, PAR, O2)
• Analog Output
  4-20 mA, 0-1 V, 0-2 V, 0-3 V, 0-4 V, 0-5 V (Linear)
• Digital Output (RS232)
  9600 baud/8 data bits, 1 start bit/2 stop bits/no parity. ASCII Format
• Display
  High contrast 2 x 16 character LCD.
• Power Supply
  12 V, 2.0 Ah Rechargeable Lead Acid Battery. (Up to 6 hours continuous operation)
• Gas Connections
  Two gas ports (inlet and exhaust) for 1/8" (.125mm) ID tubing.
• Housing
  High Impact, Aluminium Enclosure.
• Dimensions
  158 W mm x 210 D mm x 62 H mm
• Weight
  1.5 kg.

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