Details

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The Huba Control 402.9300021 is a differential pressure transmitter designed for low‑pressure measurement (0–10 mbar range), ideal for HVAC, environmental monitoring, and medical applications. It provides a 0.5–4.5 V output signal at 12 V DC supply, with compact design and plug connector for easy installation.

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⚙️ Key Specifications (402.9300021)

• Type: Differential pressure transmitter
• Measuring Range: 0–10 mbar (low pressure applications)
• Output Signal: 0.5–4.5 V DC (ratiometric)
• Supply Voltage: 12 V DC (range 10.2–33 V DC)
• Response Time: <10 ms
• Accuracy: ±0.6% of full scale
• Connections: Plug connector, pressure ports P1/P2
• Mounting Options: PCB snap‑on, DIN rail adapter, or screw bracket
• Dimensions: Approx. 89 × 55 × 32 mm
• Weight: ~27 g
• Protection: Galvanic isolation, CE compliant

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🔑 Features & Benefits

• High sensitivity: Designed for very low differential pressures (airflows, filter monitoring).
• Stable measurement: Long‑term accuracy thanks to membrane and ceramic sensor technology.
• Compact design: Easy integration into HVAC units or PCB assemblies.
• Flexible installation: Multiple mounting options (PCB, DIN rail, screw).
• Fast response: <10 ms for dynamic pressure changes.
• Cost‑effective: Attractive price‑performance ratio for OEM applications.

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📌 Applications

• HVAC systems: Airflow monitoring, filter clogging detection.
• Environmental monitoring: Low‑pressure measurement in cleanrooms or labs.
• Medical equipment: Respiratory devices, air handling systems.
• Industrial automation: Process control requiring precise low‑pressure feedback.

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📊 Related Huba Control 402 Series Models

Model Code	Range (mbar)	Output Signal	Notes
402.9300021	0–10	0.5–4.5 V	Standard low‑range model
402.9400021	0–50	0.5–4.5 V	Extended range version
402.9510021	0–50	0.5–4.5 V	Similar, alternate connector
402.9200021	0–5	0.5–4.5 V	Ultra‑low pressure detection
402.9600021	0–100	0.5–4.5 V	Higher range for industrial use

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⚠️ Considerations

• Range selection: Ensure the chosen model matches your application’s pressure range (0–5, 0–10, 0–50 mbar, etc.).
• Output compatibility: 0.5–4.5 V signal requires controllers/PLCs with analog input capability.
• Environment: Designed for air and neutral gases; not suitable for aggressive media.
• Availability: Lead times may be 3–4 weeks depending on distributor stock.

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✅ Summary: The Huba Control 402.9300021 differential pressure transmitter is a compact, accurate solution for low‑pressure measurement in HVAC, environmental, and medical applications. With a 0–10 mbar range, fast response, and flexible mounting, it is ideal for OEM integration and precise airflow monitoring.

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