BluNODE DP
HVAC Monitor with Built‑In Differential Pressure Sensors
$1,750
HVAC‑focused monitoring with four built‑in Sensirion SDP810 differential pressure sensors. BluNODE DP combines comprehensive base monitoring (20 temperature, 40 Modbus, 4 pulse, 4 CT inputs) with precision differential pressure measurement—perfect for airflow diagnostics, filter monitoring, and commissioning.
Don't need DP sensors? See BluNODE | Also need 4‑20mA analog? Add CL Board (+$500)
Base Monitoring + HVAC Diagnostics.
BluNODE DP delivers everything in the base BluNODE—20 temperature sensors, 40 Modbus devices, 4 pulse inputs, and 4 current transformers—plus four built‑in Sensirion SDP810 differential pressure sensors for HVAC airflow diagnostics.
Perfect for HVAC contractors, TAB professionals, and commissioning agents who need to monitor airflow, filter status, duct pressure, and system performance.
Key Benefits
Where BluNODE DP Excels
HVAC Airflow Diagnostics Monitor differential pressure across air handlers, ducts, and ventilation systems for airflow validation and performance verification.
Filter Monitoring Track pressure drop across filters to optimize replacement schedules and maintain system efficiency.
Commissioning & Retro‑Commissioning Capture differential pressure data to verify HVAC systems are operating as designed and identify opportunities for improvement.
TAB (Testing, Adjusting, Balancing) Deploy for short‑term or permanent monitoring of airflow and pressure balance across building zones.
Building Performance Monitoring Combine differential pressure with temperature, pulse, and Modbus sensors for comprehensive facility oversight.
BluNODE DP combines precision HVAC diagnostics with the comprehensive sensor suite of the base BluNODE—giving you complete flexibility to monitor any building system.
4× Sensirion SDP810 Differential Pressure Sensors
Industry‑leading accuracy for HVAC applications—airflow, filter status, duct pressure, and system balance.
20× Temperature Inputs
Monitor supply, return, mixing, and ambient temperatures across your HVAC system.
4× Pulse Inputs
Track water, gas, or electric consumption alongside HVAC performance.
4× Current Transformer Inputs
Monitor HVAC electrical consumption at the equipment level.
40× Modbus Sensors
Integrate with existing HVAC controls and building automation equipment.
Technical Specifications
BluNODE DP (Differential Pressure)
| Differential Pressure Sensors (DP Board) | |
| DP Sensor Channels | 4 built-in Sensirion SDP810 differential pressure sensors |
| Measurement Range | ±500 Pa (±2 inches H₂O) |
| Accuracy | ±3% of reading (typical HVAC range) |
| Resolution | 0.1 Pa |
| Connection Type | Air tube connectors (tubing included) |
| Applications |
|
| Temperature Monitoring (Base Board) | |
| Temperature Inputs | Up to 20 temperature sensors |
| Sensor Types | Thermistors, RTDs, thermocouples |
| Typical HVAC Use | Supply air, return air, mixed air, ambient temperature |
| Pulse Monitoring (Base Board) | |
| Pulse Inputs | 4 pulse counter channels |
| Input Types | Dry contact, reed switch |
| Power Monitoring (Base Board) | |
| CT Inputs | 4 current transformer channels |
| Typical HVAC Use | Fan power, air handler consumption, HVAC equipment monitoring |
| Modbus Integration (Base Board) | |
| Modbus Sensors | Up to 40 Modbus devices |
| Protocol | Modbus RTU over RS-485 |
| Typical HVAC Use | Integration with VFDs, damper actuators, HVAC controls |
| Network Connectivity | |
| Wireless Options | Wi‑Fi (802.11 b/g/n), Cellular (LTE/4G), LoRaWAN |
| Wired Options | RS‑485, Ethernet (optional) |
| Data Processing & Storage | |
| Processing | Local edge computing and data logging |
| Logging Interval | Configurable from 1 second to hourly |
| Offline Operation | Fully functional without internet connection |
| Power | |
| Input Voltage | 12‑24VDC or 100‑220VAC |
| Battery Life | Up to 10 years (in low‑power configurations) |
| Physical Specifications | |
| Enclosure | Industrial‑grade, ruggedized housing |
| Rating | NEMA 4X / IP65 (indoor/outdoor rated) |
| Mounting | Wall‑mount, pole‑mount, DIN rail, magnetic mount |
| Operating Temperature | ‑20°C to 60°C (‑4°F to 140°F) |
| Security | |
| Data Encryption | AES‑256 encryption |
| Secure Communication | TLS/SSL encrypted transmission |
| Software & Interface | |
| Configuration | Web‑based interface or BluCORE integration |
| Export | CSV, Excel, API integration |
| Additional Expansion Capability | |
| CL Expansion Board | 4× 4‑20mA analog inputs (+$500) can be added for industrial sensors |
| Certifications | |
| Standards | FCC, CE, UL certified, RoHS compliant |
Add 4‑20mA Analog Capability
BluNODE CL Expansion Add four channels of 4‑20mA analog inputs for pressure transducers, flow transmitters, and other industrial sensors—combine HVAC diagnostics with analog monitoring.
HVAC‑Focused. Complete Integration.
Standalone Operation Deploy BluNODE DP as an independent data logger for HVAC diagnostics and airflow monitoring.
Networked with BluCORE Connect multiple BluNODE DP devices to BluCORE for centralized HVAC performance tracking across your facility.
Integrated with BluPULSE Add BluPULSE pulse readers to extend utility monitoring capability alongside HVAC diagnostics.
Mixed Deployment Combine BluNODE DP (for HVAC) with BluNODE and BluNODE CL devices to optimize costs and capabilities across your facility.
BluNODE DP Hardware
BluNODE precision data logger with DP expansion board pre‑installed
4× Sensirion SDP810 differential pressure sensors (mounted on‑board)
Air tube connectors and fittings for pressure measurement
Power supply and cables
Mounting hardware
Antenna (for wireless configurations)
Quick‑start guide
What’s Included
Software & Interface
Local data logging and storage
Integration with BluCORE dashboard (when networked)
Historical data access and export
Alert and notification capabilities
API access for custom integrations
Support Options
The Starter ($500) — Sensor selection and hardware design guidance
The Pro Setup ($100/mo) — Ongoing configuration and remote support
The Expert Edge ($250/mo) — Senior expert consultation for advanced deployments
Need Help with HVAC Monitoring?
BluNODE DP includes built‑in differential pressure sensors plus the full suite of base BluNODE capabilities. Our support plans include expert guidance for HVAC monitoring, sensor placement, and system configuration.
BluNODE DP — $1,750
Ready to Deploy?
Purchase BluNODE DP for immediate deployment with built‑in differential pressure monitoring, or request a quote for multiple units.
Don't need differential pressure sensors?
Save $750 with BluNODE base—perfect for temperature, pulse, Modbus, and CT monitoring without HVAC diagnostics.
Also need 4‑20mA analog inputs?
Add the CL expansion board ($500) for industrial sensor capability alongside HVAC diagnostics.
Planning a larger deployment?
Our team can help you design the optimal mix of BluNODE devices for your facility's monitoring needs.
Volume Pricing Available
Ordering multiple BluNODE devices or planning a campus‑wide deployment? Contact us for volume pricing and deployment consultation.
FAQs
What's the difference between BluNODE DP and BluNODE?
1
BluNODE DP includes four built‑in Sensirion SDP810 differential pressure sensors for HVAC monitoring, plus all base BluNODE capabilities. If you need HVAC airflow diagnostics, choose BluNODE DP. If you only need temperature, pulse, Modbus, and CT monitoring, the base BluNODE is sufficient.
Can I add the DP board to BluNODE later?
2
Yes! The DP expansion board can be purchased separately ($700) and installed by the customer. However, if you know you'll need differential pressure monitoring, we recommend BluNODE DP—same total price, pre‑installed and factory tested.
What are the DP sensors used for?
3
The Sensirion SDP810 sensors measure differential pressure for HVAC applications—airflow across air handlers, pressure drop across filters, duct static pressure, and building pressure balance.
Can I add 4‑20mA analog monitoring to BluNODE DP?
4
Yes! You can add the CL expansion board ($500) to BluNODE DP for complete HVAC diagnostics plus analog sensor capability in one device.
Can BluNODE DP operate without BluCORE?
5
Yes. BluNODE DP functions as a standalone data logger with local storage and processing. BluCORE integration is optional for centralized monitoring.
We offer three support plans—The Starter, The Pro Setup, and The Expert Edge—covering everything from initial setup to ongoing optimization.
What support is available after purchase?
6
Ready to Add HVAC Diagnostics to Your Monitoring?
See how BluNODE DP can deliver precision differential pressure monitoring plus comprehensive base capabilities for your building systems.