The Reality: Why Conventional Solutions Fail

In laboratory and cleanroom environments, facility managers are often forced to choose between "over-engineered complexity" and "functional deficiency."

● DDC Complexity is a Maintenance Nightmare: Traditional DDC systems are powerful but require expert coding. When the original programmer leaves or code is lost, the system becomes an unmaintainable "black box," leading to astronomical repair costs.

● Standard VAV Valves Ignore Safety: Most integrated VAV valves focus solely on temperature. However, in a lab, Differential Pressure (to prevent leaks) and Air Change Rates (to ensure cleanliness) are the real safety priorities. Solutions lacking pressure and CO₂ monitoring pose serious compliance risks.

● Fragmented Systems Breed Instability: Cobbling together separate pressure switches, CO₂ sensors, and controllers creates a "weakest link" problem. Complex wiring and compatibility issues lead to frequent system failures and higher procurement costs.

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Our Approach: The "Vertical Environment Steward"

Dimension	Standard Integrated Valve	Universal DDC System	Saswell Vertical Solution
Temp Control	✅ Supported	✅ Supported	✅ High-Precision PID
Pressure Control	❌ Not Supported	✅ Req. Extra Modules	✅ Built-in ±500Pa Sensor
Airflow Control	❌ Not Supported	✅ Req. Coding	✅ Real-time Flow Monitoring
IAQ/CO₂	❌ Not Supported	✅ Req. External Logic	✅ Direct 0-10V Sensor Sync
Usability	Low	High (Coding Skills Req.)	Low (HMI Menu-Driven)

Integrated VAV environment safety control system for modern laboratory settings

Laboratories: Safety as the Bottom Line (Pressure + CO₂ Control)

● Constant Negative Pressure: Using an onboard high-precision sensor (0.1 Pa resolution), the system monitors room-to-corridor pressure and dynamically adjusts the damper to maintain a strict negative setpoint (e.g., -15Pa). No external transmitters needed—just one sampling tube.

● Smart IAQ Linkage: By integrating CO₂ sensors, the system prioritizes fresh air intake when occupancy increases, ensuring researcher health without compromising thermal stability.

Precision VAV environmental control system for industrial cleanroom applications

Cleanrooms & Operating Theaters: Constant Volume is Key

● CAV/VAV One-Touch Switching: In Constant Air Volume (CAV) mode, our algorithm locks the airflow regardless of duct pressure fluctuations, ensuring stable air change rates and ISO compliance.

● Threshold Alarms: Set min/max flow limits. If a filter clog causes airflow to drop, the system triggers an immediate alarm to mitigate production or surgical risks.

Why Choose Saswell?

"Dashboard" Style Control

The SAS965-HMI displays Temperature, Pressure, Flow, and CO₂ at a glance. Administrators manage the room like a pilot in a cockpit — no laptop required for field commissioning.
Extreme Compatibility & Retrofit Savings

● If your existing Siemens, Honeywell, or Belimo actuators support 0-10V, our controller can drive them directly. Reduce retrofit costs by over 50% by keeping your current ductwork and valves.
Power-Fail Memory

In critical environments, there is no room for error. The HDC218 automatically restores all safety setpoints after a power outage, ensuring your safety barrier remains intact.

Related Products

VAV Controller

HDC218-VAV

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● Power Input: 100~240VAC / 50~60Hz
● Built-in Power Conversion Module: Provides 24V/1A for damper power supply
● Built-in Digital High-Precision Differential Pressure Sensor
● Supports BACnet MS/TP and Modbus Protocols
● 3 Analog Outputs (AO), 5 Digital Outputs (DO), 3 Digital or Analog Inputs
● Can be expanded with additional I/O via HDC-IO
● Applicable for VAV Box, Venturi Valve, Variable Air Volume Valve, Lab Fume Hood Control, etc.
● Dimensions: 121 x 113 x 47.3 (mm)

The ultimate universal VAV solution designed for high-performance velocity control and seamless BACnet integration.

HMI Control

SAS965-HMI

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● Power Supply: 9~30VDC, DC Carrier Communication and Power Supply
● Display: 4-inch full capacitive touch color screen, resolution 480*480 dpi
● Temperature Display Range: 0~60°C, accuracy ±0.5°C
● Humidity Display Range: 10~99%, accuracy ±5%
● Interface: 2-wire DC carrier communication; external NTC sensor
● Optional Wi-Fi Function: Supports remote control via mobile app
● Dimensions: 86*86*11mm

Get In Touch

Contact our friendly Customer Service team for any Question,Concern, or Suggestion. We'd love to hear from you!

Headquater hotline: +86 755 61218391

Headquater email: info@saswell.com

MENA tech support hotline: +97155 6743682

MENA tech support email: support@saswell.com