Indoor Air Quality Instruments
iAQ-Pro-D
16-Parameter HVAC Duct Mount IAQ Monitor
Real-time monitoring of PM, CO₂, VOC, humidity, temperature, filter pressure drop, and air velocity — directly in the HVAC duct.
ARG Instruments
Continuous IAQ monitoring, directly in the duct.
The iAQ-Pro-D installs directly in HVAC ductwork to continuously measure PM, CO₂, TVOC, humidity, temperature, filter pressure drop, and air velocity — with MCERTS certified PM and 10-year factory-calibrated sensor life.
Built for HVAC Integration
Everything a duct-mount sensor should be.
Designed for HVAC integrators and building automation engineers who need accurate, continuous IAQ data without disrupting existing infrastructure.
MCERTS Certified PM
PM0.5 through PM10 — MCERTS certified by the UK Environment Agency. Both mass concentration (μg/m³) and number concentration. Sensor lifetime > 10 years.
Calibration-Free CO₂ & VOC
Non-NDIR CO₂ (400–5000 ppm, ±40 ppm) — no calibration required. High-sensitivity VOC with 0.05 ppm detection limit and 10-year sensor lifetime.
Filter & Airflow Monitoring
Differential pressure sensor monitors filter condition for maintenance alerts. Air velocity from 0.1 to 20 m/s. Catch blocked filters before they waste energy.
Zero-Config Networking
Hybrid Power Line + RF — truly plug-and-play, no field wiring configuration. Powered by the ARG G3-PLC Module. Optional factory-installed cellular modem for legacy rooftop units without neutral wiring.
Specifications
| Particulate Matter | PM0.5 (number conc.), PM1.0, PM2.5, PM4, PM10 — MCERTS certified; 1–1000 μg/m³; ±10 μg/m³ (0–100) / ±10% (100–1000) |
|---|---|
| CO₂ | Non-NDIR; 400–5000 ppm; ±40 ppm + 5% of reading; calibration-free |
| VOC | 0–1000 ppm ethanol equivalents; LOD < 0.05 ppm; lifetime > 10 years |
| Humidity | ±1.8% RH; 0–100% RH; 6 sec response (τ63%) |
| Temperature | ±0.2 °C; 0–90 °C; 2 sec response (τ63%) |
| Filter Pressure | Differential across duct filter; 0–2000 mbar; ±2 mbar |
| Air Velocity | Differential pressure technique; 0.1–20 m/s; ±0.2% FS |
| Optional Sensors | Current sensors (compressor & blower motor monitoring); UV sensor (duct disinfection monitoring) |
| Connectivity | Hybrid Power Line + RF (zero-config); optional factory-installed cellular (LTE) |
| Power | 80–220 VAC, 50/60 Hz, 2 W; IEC 2-pin power cord included |
| Enclosure | Duct mount; 7.20″ × 4.54″ × 4.12″ |
Applications
Continuous IAQ data where it matters most.
From smart buildings to industrial facilities, the iAQ-Pro-D delivers accurate, actionable HVAC data 24/7.
HVAC System Management
Continuous in-duct data for building automation and preventive maintenance. Filter condition monitoring, airflow verification, HVAC fault detection, and energy efficiency optimization.
Building IAQ Compliance
Real-time data for ASHRAE 62.1, WELL Building, and LEED certification. Building commissioning, healthy building certification, tenant IAQ reporting, continuous compliance logging.
Commercial & Industrial Facilities
Scalable monitoring across large buildings using existing HVAC infrastructure. Multi-zone IAQ monitoring, no new wiring, BMS and cloud dashboard integration, retrofit without disruption.
OEM & System Integration
Hybrid PLC+RF output connects to BMS gateways and building controllers. Configurable reporting intervals, cloud or on-premises dashboard, modular sensor complement.
Ready to deploy iAQ-Pro-D?
Get pricing for single units, volume orders, and OEM HVAC integrations.