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Digital Panel meters and switchboard meters
Hsiang Cheng Corp. ®
MFR Series, Digital Panel Meters
Frequency Rate Meters (RPM/Speed/Fluid)		  
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Hsiang Cheng, SMA & SMV DMMs
 
 
  Characteristics:  
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  • True process frequency/rpm/speed rate monitor
  • Wide input sensitivity range from 10 mV to 100V
  • Rangeable of display scale for 4 digital rate setting
  • High accuracy of 0.02%
  • 12 or 24V exciting voltage provided
  • 4 digits, maximum 9999 counts
  • Display with super rate LED
  
 
  Product Description:  
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Model MRF is designed to accept frequency count input & offers flexible & switchable ability in frequency rate conditioning with digital setting & getting required scale. It features:

  • Designed with a wide input range span from 0 to 100Hz to 0 to 20KHz & maximum scale 0 to 9999 counts
    Switchable input range multiplier of 1/10/100 time selection & rate multiplier of 4 digits 0.0001 to 0.9999
    Selectable decimal point in matching proper engineering unit.
    Input discriminator for sensitivity adjustment, range from 10 mV to 5V
    Exciting voltage provided of switchable range ither 12 or 24V for sensor simulating source for field application.
  
 
  Specifications :  
 
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Range:
Accuracy (23 + 3°C): 0.05% fs + 1 count
Stability :

Temperature coefficient < 40 ppm per degree C, long term draft<0.002% per year
Digits & counts: maximum 9999 counts
Display : 0.56” super rate LED
Configuration : Programmable rate function of 4 digital resolution 0.0001 to 0.9999
Excitation voltage : Selectable 12 & 24 voltages with load capability of 25 mA maximum
Input Signal: Sensitivity : 10mV to 100V
Waveform : periodical of unipolar or bipolar of voltage type or open collector.
Overload : Maximum 250 Vrms for voltage input
Dielectric strength: 2KVrms / 1 minute, 50 / 60 Hz
Response Time; Sample rate 1 of per sec typically
Operating conditions: -10 to 55oC, 0-99% RH non-condensed
Auxilliary Power: AC + 5% < 3.5 VA, DC + 20% < 5 watts
Applied rules and standards
Measuring & conversion: IEC 688
Dielectric strength:

IEC 688

Impulse & Surge test: ANSI C37.90.1/1989
IEC 255-3 (1989)
Measuring reliability: VDE 3540
 
 
  Downloads:  
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  pdf_pic Downloads: General Specifications  
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Head office located at: 900 McKay Rd., Pickering, Ontario L1W 3X8 (click for map)
Sales: 905.428.3413 | Toll-Free: 800.617.3413 | Fax: 905.428.6086 | E-Mail: sales@electro-meters.com

All descriptions and specifications are subject to change without notice
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