F.W. Bell Open Loop Current Sensors NA-25 - Sypris T&M - FW Bell - #1

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NA-25 and NAP-25 Open Loop Hall Effect Description The NA-25 and NAP-25 Hall effect current sensors accurately measure DC and AC currents and provide electrical isolation between the output of the sensor and the current carrying conductor. D Measuring Circuit Units NA-25 NAP-25 Full Scale(FS) DCor ACpeak (1)...............................± A -25- Full Scaleoutput (2) ............................................... + mV -22.5 to 62.5 - Excitation Circuit Nominal excitation current (le) ................................ mA -7- Maximum excitation current (le)............................... mA -10 - Input résistance...................................................... ohms -450 to 900 - Output Sensitivity (2)......................................................... mV/A -0.9 to 2.5 - Linearity................................................................ %FS -1 - Maximum zéro offset.............................................. + mV -25 - Maximum hystérésis of offset (3) ............................ ±mV -0.15 - Minimum load résistance........................................ kohms -10 - Output résistance................................................... ohms -<3200 - Frequency Response............................................. kHz -1- Influences On Accuracy Maximum offsetdrift with température.....................±^V/°C -40- Excitation change of ±1% Max. sensitivity change.......± % -1- Maximum sensitivitydrift with température .............. ±%/°C--0.07- Withstand Capabilities Dielectrictest(4).................................................... kV -0.5- Output short or open.............................................. -NoDamage - General Information Operating température range................................... °C --40 to +85- Storage température range...................................... °C - -40 to+100- Apertureopening...................................................inches(mm) - 0.20 (5.1) - Current carrying conductor diameterd 2 AWG)..........inches(mm) - 0.087 (2.21) — Weight..................................................................grams - 3.4-7.0- Output short or open circuit..................................... - NoDamage - Output référence...................................................Conventional current f lowing in direction of dot or arrow results in a positive différence in Vh. VpaciFic — —, — m-» —, , f— Pacific Scientific-OECO ^l_|fc| \\— |L_ 4607 SE International Way Milwaukie, OR 97222 www.oeco.com | ^ CD (D 3 5! BELL Rev. date 04/2003