Vulcain IAQPT-SM-A Monitor

The Vulcain IAQPT-SM-A is a high-precision, wall-mounted CO2 gas monitor engineered for demand control ventilation (DCV) and indoor air quality management. As a direct replacement for legacy models including the 90DM4SM-C, IAQ-SM-A, and M-512041, this unit utilizes advanced non-dispersive infrared (NDIR) dual-beam technology to compensate for sensor drift and ensure long-term signal stability. Designed for seamless integration into building management systems (BMS), it provides a standard 4-20mA analog output, allowing for precise modulating control of fresh air dampers and exhaust fans based on actual occupancy levels.

Built for the rigors of commercial mechanical environments, the IAQPT-SM-A features a rugged white ABS enclosure that snaps easily into standard 2x4 electrical boxes for a clean, low-profile wall mount installation. The sensing element offers a wide detection range, typically jumper-selectable between 0-2000 ppm and 0-5000 ppm, effectively covering everything from standard office settings to high-occupancy classrooms. By monitoring carbon dioxide levels in real-time, contractors can significantly reduce energy overhead by preventing the over-ventilation of unoccupied spaces while maintaining compliance with ASHRAE 62.1 ventilation standards.

• Universal Compatibility: Drop-in replacement for Honeywell Vulcain part numbers 90DM4SM-C, IAQ-SM-A, and M-512041.
• Advanced NDIR Sensing: Dual-channel infrared technology minimizes calibration frequency and eliminates errors caused by environmental aging.
• Standardized Output: Features a 4-20mA signal (jumper selectable for 0-20mA) for easy interfacing with any PLC or DDC controller.
• Energy Optimization: Enables true demand control ventilation to lower HVAC operational costs.
• Simplified Maintenance: Includes a calibration port and menu-driven interface for straightforward field adjustments.

How do I wire the IAQPT-SM-A for a 4-20mA loop?
This is a 3-wire device requiring a 24VAC or 24VDC power supply. Use the dedicated signal and return terminals to interface with your controller's analog input, ensuring the loop impedance does not exceed 500 ohms.

Can this monitor detect gases other than CO2?
The IAQPT-SM-A is specifically configured as a CO2 gas monitor. If your application requires CO, VOC, or humidity sensing, please verify the specific sub-model suffix as this standard unit is optimized for carbon dioxide detection.

Does the unit require manual calibration out of the box?
These units are factory-calibrated; however, for critical environments, a field bump test or fresh air calibration is recommended post-installation to account for site-specific conditions.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.