DX 330 is a digital Indoor Air Quality (IAQ) probe for the PRO D01 / PRO D05 handheld meters. The probe measures:

• Temperature
• Relative humidity
• Atmospheric pressure
• CO2
• VOC index.

The probe is supplied factory-calibrated, and it is ready to use.

The probe can be optionally supplied with a DAkkS/ACCREDIA calibration certificate.

The calibration data are stored in the probe, allowing for interchangeability without the need for recalibration.

Equipped with 4-pin M12 connector.

Sensor:

Temperature/RH: CMOS
Pressure: Piezoresistive
CO₂: Non-Dispersive Infrared (NDIR)
VOC: Metal-Oxide film

Measuring range:

Temperature: -20…+80 °C
RH: 0…100%
Pressure: 300…1250 hPa
CO₂: 0…5000 ppm
VOC: 1…500 (dimensionless index)

Resolution:

Temperature: 0.1 °C
RH: 0.1 %
Pressure: 0.1 hPa
CO₂: 1 ppm
VOC: 1

Accuracy:

Temperature: ± 0.1 °C (20…60 °C) / ± 0.2 °C (remaining range)
RH: ±2% (0…80%RH) / ±3% (80…100%RH) @ T=10…50 °C
Pressure: ± 0.5 hPa (300…1100 hPa / -20…65 °C)
CO₂: ± (50 ppm + 3% of the measure) @ 25 °C / 1013 hPa
VOC: Relative qualitative measurement

Output:

UART (TTL 3.3V)

Power supply:

3.3…6 Vdc

Power consumption:

<1 mA typ.

Connection:

4-pole M12

Temperature drift:

Pressure: ± 0.75 Pa/°C (0…55 °C / 700…1100 hPa)
CO₂: 1 ppm/°C (-20…45 °C)

Response time:

Temperature/RH: 10 s (T63 with 1 m/s air flow)
CO₂: < 120 s (T90 with 2 m/s air flow)