The STEC SEC-B40 is a heavy-duty industrial mass flow controller engineered for precise gas flow regulation in semiconductor, analytical, and process gas systems. It utilizes a thermal sensing principle with a capillary sensor and proportional control valve to deliver accurate, repeatable flow control independent of pressure and temperature fluctuations.
STEC SEC-B40 Technical Specifications
| Parameter | Specification |
|---|---|
| Flow Range | 0–40 SCCM (N2 equivalent) |
| Accuracy | ±1% of setpoint (typical) |
| Repeatability | ±0.5% of full scale |
| Control Valve Type | Normally closed solenoid proportional valve |
| Response Time | ≤1 second (typical) |
| Operating Pressure | 0–0.5 MPa (gauge) |
| Supply Voltage | ±15 VDC or 24 VDC (model dependent) |
| Output Signal | 0–5 VDC or 4–20 mA |
| Gas Compatibility | Non-corrosive gases (N2, Ar, He, H2, etc.) |
| Wetted Materials | Stainless steel, PTFE, Viton |
| Leak Integrity | 1×10⁻⁹ atm·cc/sec He |
| Operating Temperature | 5–50 °C |
| Mounting | Inline or manifold (1/4″ VCR or Swagelok) |
| Electrical Connection | D-sub connector or terminal block |
Key Engineering Features
- Thermal mass flow sensing with capillary sensor for high accuracy and stability
- Proportional solenoid control valve for fast, precise flow adjustment
- Wide dynamic range and low pressure drop
- Corrosion-resistant wetted materials for compatibility with reactive gases
- Analog and digital interface options for system integration
- Compact, modular design for easy installation in gas panels
Industrial Applications
- Semiconductor manufacturing – gas delivery in etch, CVD, and diffusion processes
- Analytical instrumentation – carrier gas control in GC and mass spectrometry
- Process gas blending and dosing in chemical and pharmaceutical production
- R&D and laboratory gas flow studies
- Fuel cell and renewable energy gas management
For technical inquiries, dimensional drawings, or replacement support for STEC SEC-B40, contact the Pro-Hydraulic engineering team.
PRODUCT IMAGES
STEC SEC-B40 Mass Flow Controller
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the STEC SEC-B40 Mass Flow Controller. This precision-engineered industrial component delivers reliable performance and accurate operation for demanding industrial systems.