Huba Control 401 Differential Pressure Transmitter
Compact differential-pressure model for neutral fluids or gases, per original manufacturer.
Manufacturer: Huba Control AG.
Official Source
Huba manufacturer product index / technical documents →
Check measuring range, medium compatibility, output and current approval for the ordered model suffix.
Huba Control Model 401 official current catalog / downloads →
Huba Type 401 — ceramic diaphragm for very low differential air pressure
Huba 401 uses a highly reproducible 2-component diaphragm for very low air pressure differences including <20 Pa. The maker explicitly targets condensing-boiler optimization; a pressure sensor in a boiler is not itself an approved combustion safety cutoff.
| Topic | Huba model specification | Engineering and QA consequence |
|---|---|---|
| Range | Relative/differential 0–3 to 0–8 mbar configurations (0–300/800 Pa) | Choose correct pressure span and full-scale scale; sensitivity below 20 Pa requires stable zero reference. |
| Electrical output | 0.5–4.5 V analogue; 10.4–18 VDC nominal supply; <8 mA at nominal pressure unloaded | Do not power at 5 V solely because signal spans 0.5–4.5 V; load >15 kΩ and ground reference matter. |
| Response | <10 ms maker-listed response; load-change guidance <10 Hz | Keep pressure tubing short/leak-free for actual application reaction time. |
| Media and mechanics | Air, neutral gas; medium/ambient 0…70°C; PC housing, LSR diaphragm, ceramic Al₂O₃ element | Not a water/brine/refrigerant-liquid process transducer; prevent condensate contacting sensing ports. |
| Short-time overload | 100 mbar brief one-side overload at room temperature; 200 mbar rupture | Overload is not a continuous operation specification. Check gas appliance safety/EMC approval separately. |
Variant-specific specification and approvals
Before installing or certifying the device, verify exact Huba order code, system-pressure limits, process media, signal supply, output scaling, pressure ports, EMC and the final assembly’s applicable certificates. No general-purpose ATEX/IECEx approval is claimed on this page.
OEM source: Huba 401 official specifications.