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The compact Type 520 pressure transmitters are based on Huba Control’s advanced thick-film technology, featuring a hermetically welded, seal-free stainless steel measuring cell. They provide precise measurement of relative pressures up to 1000 bar and offer high burst pressure resistance, reliability, and long-term stability.
Type 520 pressure transmitters are suitable for use with liquids and gases, including all common refrigerants and ammonia. This makes them a reliable solution for a wide range of applications, from industrial processes or HVAC systems to railway components. Comprehensive approvals- including EMC with enhanced noise immunity, shock and vibration resistance, as well as certifications such as UL, EN 45545-2, ATEX and IECex confirm its suitability for diverse and safety-critical environments.
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Compact and robust stainless steel design
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Hermetically welded construction without seals, no risk of leaks
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High variety of connector options
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Time-saving, fast customer-side cable assembly with quick cable screw connection
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No elastomer seals
Product featurePressure measuring range-1 ... 1000 bar (Relative)Response time<2 ms (typ. 1 ms)Load change<100 HzSensor weight90 gField of applicationMediaProcess medium; Gas; Refrigerant incl. ammoniaMedium temperature-40 ... 135 °CPermissible overload5 x FS; 3 x FS (max. 1500 bar)Bursting pressure10 x FS; 6 x FS (max. 2500 bar)Ambient conditionAmbient temperature-30 ... 85 °CStorage temperature-50 ... 100 °CMaterialHousingStainless steel 1.4404 (AISI 316L); Stainless steel 1.4305 (AISI 303)Measuring element with media contactStainless steelPressure connection with media contactStainless steel 1.4404 (AISI 316L); Stainless steel 1.4305 (AISI 303)Plug receptaclePolyarylamide 50 % GF UL 94 V-0Electrical dataCurrent consumption<23 mAInverse-polarity protectionShort-circuit and reverse polarity protected. Each connection against each other with max. supply voltage.Insulation voltage500 VDC (Standard)Protection class3Installation guideInstallation orientationanyApprovalEMC compatibilityCE-compliant in accordance with EN 61326-2-3increased noise immunityEN 50121-3-2Shock according to IEC 68-2-27100 g, 11 ms, half-sine curve, all 6 directions, free fall from 1 m onto concrete (6x)Permanent shock according to IEC 68-2-2940 g over 6 ms, 1000x all 3 directions.Vibration according to IEC 68-2-620 g, 15 ... 2000 Hz, 15 ... 25 Hz with amplitude ± 15 mm, 1 octave / minute in all 3 directions, 50 continuous loadsULANSI/UL 61010-1 gemäss E325110Drinking water authorisationNSF/ANSI 61/372 according to MH60087; WRASRailway approvalEN 50155 / EN 45545-2Explosion protectionIntrinsic safety ''i''Ex II ½ G Ex ia IIC T4 Ga/Gb; Ex II ½ D Ex ia IIIC T125ºC Da/DbEC type examination certificateSEV 15 ATEX 0173; SEV 10 ATEX 0145Connection to certified intrinsic safety ohmic circuits with the maximum valuesUi < 15 VDC / Ii < 200 mA / Pi < 750 mW; Ui < 30 VDC / Ii < 100 mA / Pi < 750 mWEffective internal inductance and capacitanceLi = 0 nH / Ci < 150 nF; Li = 0 nH / Ci < 150 nF; Li = 0 nH / Ci = 0 nFIECExSEV 16.0007
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