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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.
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
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.
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.
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 |
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.
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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