Duct Air Quality (VOC) transmitter VOCD-series

Outputs:

• 0-10 Vdc, 2-10 Vdc, 4-20 mA, 0-5 Vdc, or 1-5 Vdc.
• Available configurations for one or two VOC outputs.

Estimated Operating Life: Minimum 5 years.

Accuracy: ±10% FSO.

Power Supply: 24 Vac/dc.

• Modbus RS485 Communication
• LCD Display
• Relay Outputs:
  • 1 x relay output, individually configurable
  • 2 x relay outputs, individually configurable
• Buzzer

VOC Output Range:

• 0V or 4mA: BEST (Clean Air)
• 1V or 5.6mA: STANDARD (Calibrated Level)
• 10V or 20mA: WORST (Polluted Air)

Base Level:

• Under normal conditions, the base level equals 1V.
• Below 1V: Air quality is better than the calibrated standard.
• Above 1V: Air is polluted, measured between 1V and 10V.

Sensitivity Adjustments:

• High sensitivity offers a greater response to VOC gases.

Conversion Examples:

• 10V (HIGH) = 4V (LOW)
• 10V (MEDIUM) = 6V (LOW)
• 1V remains the same across all sensitivity levels.

Example Conversion:

• 3.0V (LOW) = 4.6V (MEDIUM) = 7.0V (HIGH)

The VOCD-Series can detect a wide range of gases, including:

• Cigarette smoke
• Automobile exhaust
• Breath air
• Carbon monoxide (CO)
• Solvent fumes
• Alcohol fumes
• Acetone, Acrylonitrile, Ammonia
• Benzene, Chlorine, Dimethyl amine
• Ethane, Ethanol, Ethylene, Ethylene oxide
• Formaldehyde, Hydrogen, Hydrogen sulfide
• Isobutane, Methane, Methanol
• n-Hexane, n-Pentane, Propane
• Sulfur dioxide

VOCD 51

• VOC Output 1: 4-20 mA
• VOC Output 2: 0-10 Vdc

VOCD 51 M

• VOC Output 1: 4-20 mA
• VOC Output 2: 0-10 Vdc
• Modbus RS485 communication

VOCD 51 MDR2B

• VOC Output 1: 4-20 mA
• VOC Output 2: 0-10 Vdc
• Modbus RS485 communication
• LCD Display, 2 x Relay Outputs, and Buzzer

For additional configurations, refer to the product data sheet