8 Electronics HML3-F1 The HML3-F1 is a fast sampling, frequency converter (up to 400 samples per second) for use with HMS501 and HMS2410 flow sensors. The converter is a microprocessor driven unit providing automatic zeroing, EEProm data protection on loss of power, empty pipe detection, and self diagnostics. Features • Programmable with IF2 or HMT200 • IP67 rating • Sampling rate up to 400 Hz • One digital output • Two internal totalizers • For use with HMS501 and HMS2410 Accuracy Capable of ±0.2% of for liquid velocity > 4 ft/sec Repeatability Capable of 0.01% or better Features • Three external membrane programming keys • IP67 rating • LCD display, 2 lines, 16 characters • For use with all HMS sensors (except HMS5000) • Data logging • Panel mount configuration available Accuracy Capable of ±1% for liquid velocity > 4 ft/sec Repeatability Capable of 0.5% or better HML250 The HML250 Converter is a battery operated unit and is for use with all HMS series flow sensors. The converter is a programmable, microprocessor-driven unit providing automatic zeroing, EEProm data protection on loss of power, empty pipe detection, and self diagnostics. The display matrix is 128 x 16, 2-line (16 characters per line) with three external membrane programming keys. This model may be powered by a line source, by lithium batteries, or by a 2-wire, 4-20mA loop. Sample Time (Seconds) 1 Battery Life (Years) 4 Battery Life (Years) 1 3 months 1 5 1.5 6 15 2 8 30 4 10 60 7 10 90 and higher 10 10
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