Product Description
The 520 is UL, CE, NSF/ANSI 61/372 and WRAS approved. It's produced by Huba Control (Switzerland) and is an ultra-high quality all stainless-steel wetted pressure transmitter. Successful OEM deployments can be found in all industries and even in the most extreme harsh application conditions such as for hydraulics and pneumatics on trains (rolling stock). The 520 carries certifications for the following IEC & DIN EN norms: 50155 / 45545-2 (railway approval electronic equipment), 61373 (shock & vibration), 60068-2-1 (cold), 60068-2-2 (dry heat), 60068-2-30 (damp heat), 60068-2-27 (shock), 60068-2-64 (vibration), 60068-2-11 (salt mist). Additionally, the 520 conforms to EN 61326-2-3 (electromagnetic compatibility), EN 50121-3-2 (enhanced EMC protection), IEC 68-2-27 (shock), IEC 68-2-29 (constant shock), IEC 68-2-6 (vibration). Within HVAC-R applications, the 520 is highly successful for refrigeration pressure monitoring in heat pumps, chillers, condensing units and more. Nearly all refrigerants, including ammonia, can be successfully monitored with the 520 for continuous duty. The 520 can be supplied in high-volume for OEM requirements and all while meeting budgetary expectations. Paquin is proud to be in close partnership with Huba.
P24-520 Pressure Transmitter for Hydraulics, Refrigerants, Drinking Water & more (UL. CE, UKCA, NSF, ASNI, WRAS, Ex)
Price dependent upon specification — inquire below
Product Highlights
- EN 50155 / 45545-2, EN 61373, EN 60068-2-1, EN 60068-2-2, EN 60068-2-30, EN 60068-2-27, EN 60068-2-64, EN 60068-2-11, EN 61236-2-3, EN 50121-3-2, IEC 68-2-27, IEC 68-2-29, IEC 68-2-6
- Hydraulics, pneumatics, chemicals, sea water, fresh-water HVAC-R refrigerant pressure monitoring in heat pumps, chillers and more
- Offers analog output options: 4–20 mA (2-wire), 0–10 V, 0–5 V, 1–6 V, and ratiometric 10–90% adaptable to different control systems
- Available from vacuum (-1 bar) up to 1000 bar / 14,500 psi, making it suitable for both low and extremely high-pressure applications
- No internal seals or elastomers; ensures long-term durability, leak-free operation, and compatibility with aggressive media like ammonia
- UL, CE, NSF/ANSI 61/372 and WRAS approvals
- Up to 2,500 bar (36,259 psi) burst pressure resistance, meeting the toughest safety requirements
- Response time under 2 ms, ideal for fast-switching applications or rapid pressure changes
- Designed for heavy-duty hydraulic, pneumatic and most other liquid monitoring applications
- Supports DIN EN connectors, M12x1, Metri Pack, RAST 2.5, and custom-length cables with swift connectors
- Certified for use in hazardous areas: ATEX and IECEx compliant for Ex ia IIC T4 Ga/Gb and Ex ia IIIC T125°C Da/Db environments
- Models are available with enhanced electromagnetic compatibility per EN 50121-3-2 for rail and industrial applications
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