Hsiang Cheng Corp. ® MF Series

Digital Panel Meters, Frequency Panel Meters

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Hsiang Cheng, MF Series, Frequency Panel Meters
Characteristics:
  • Accuracy: 0.02% fs + 1 count)
  • Temperature coefficient: < 20 ppm per degree C change
  • Long term draft < < 20 ppm year
  • 4 digits-9999 counts. 5 digits-99999 counts
  • Display 0.56″super rate LED
  • Input resistance < 1 Megohoms
  • Response time Sample rate 1 pf per sec typically
  • Dielectric strength: 2 KV rms
Product Description:
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space The MF, power frequency meter, has a wide input voltage range from 30 V to 600 V. It is an accurate & stable meter with high resolution to 0.01Hz unit.
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Specifications :
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Range:
Accuracy (23 + 3°C): 0.02% fs + 1 count
Stability : Temperature < 20 ppm per degree C change. Long term draft: < 20 ppm draft per year
Digits & counts: 4 digits-9999 counts. 5 digits-99999 counts.
Display : 0.56” super rate LED
Input Resistance < 1 Megohoms
Overload : 1 KV rms for 10 secs, 750V continuous
Dielectric strength: 2KVrms / 1 minute, 50 / 60 Hz
Response Time; 1 of per sec. typically
Operating conditions: 2.5 KV rms, terminals to reference groud (case), 2KV rms for input to power
Surge test : ANSI C37.90 / 1989, IEC 255-3 (1989)
Impulse voltage: 1.2 * 50 us 4 kv, oscillation wave 0.5us-100KHz 3KV, or 1 MHz-0.25ms 2.5KV
Auxilliary Power: AC version < 3.5VA, DCoptional version “20% < 5 watts
Applied rules and standards
Measuring & conversion: IEC 688
Dielectric strength: IEC 688
Impulse & Surge test: ANSI C37.90.1/1989IEC 255-3 (1989)
Measuring reliability: VDE 3540
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pdf_pic Downloads: General Specifications
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