Volatile Organic Compound (VOC) Monitor

The AMD-300 is a compact, easy to install and operate, compressed air line VOC monitor. The instrument incorporates a rotameter for confirmation of proper airflow, a backlighted digital display and a highly specific photoionization detector sensor for trouble free and reliable operation.

The AMD-300 is designed for use in a wide variety of applications ranging from automotive, and similar, paint spray operations to wood finishing. This monitor can be used in virtually any commercial or industrial process that requires VOC monitoring of compressed breathing air for personnel working in such operations.

  • Compact Design
  • Digital Display
  • 4-20 mA Output
  • 3 Levels of Alarms
  • Audio and Visual Alarms
  • High Capacity Relays
  • Flow Meter for Confirmation of Airflow
  • High Integrity Polycarbonate Enclosure
  • Protected Maintenance Functions
  • User Programmable Alarms & Relays
  • RS-485 Digital Communication Capability
  • 110 VAC, 220 VAC, 24 VDC Power Options
  • “Intelli-Cal” Push-button Calibration Procedure
  • Range: 0-25 ppm
  • Alarm Levels: C4H8 (Isobutylene)
    • Alarm 1: 5 ppm C4H8, user adjustable
    • Alarm 2: 10 ppm C4H8, user adjustable
    • Alarm 3: 20 ppm C4H8, user adjustable
  • Alarm Adjustment: All 3 alarms are user adjustable between 3 to 25 ppm
  • Audible Alarm: 105 dB at 30 cm (12 inches)
  • Visual Gas Alarm: 3 Red LEDs
  • Visual Power/Fault: Green/Red LED
  • Display: 8 Character, high contrast dot matrix LCD with backlight
  • Resolution: 1 ppm
  • Sensor: PID (Photoionization Detector)
  • Response Time: t90 = 30 sec
  • Accuracy: +/- 10% of reading
  • Temperature Range: 32° to 104° F (0° to +40° C)
  • Outputs:
    • Relays: 4 Form C, 10A SPDT contacts, 3 gas alarms & 1 fault
    • Analog: 4-20mA Digital: RS-485 Modbus
  • Power: 110 VAC, 220 VAC and/or 24 VDC, 15W
  • Power Connection: Supplied with strain relief for 0.20 to 0.35 inch diameter cable
  • Inlet Air Line Connection: 1/4” NPT female
  • Air Line Sample Hose to Monitor: 5 foot length
  • Inlet Pressure: 60-150 psi, air supply lines, 55 psi regulated to monitor
  • Enclosure: Polycarbonate
  • Size, Instrument Only: 7 x 5 x 3 inches (18 x 13 x 8 cm)
  • Weight, Instrument Only: 2 lbs (0.9 kg)
AMD-300 External Features