Hsiang Cheng MDF Series Digital Panel Meters

Programmable Process Panel Meters

spacer
Hsiang Cheng, MF Series, Frequency Panel Meters
Characteristics:
  • True programmable dc process rate monitor
  • Wide de coltage & current input ranges
  • Voltage span 10mV to 400 V
  • Current span 1 mA to 200 mA
  • Scaleable display from -19999 to +19999C
  • ASIC conversion module
  • High accuracy of 0.04%
  • 4-1/2 digits of maximum +19999 counts
  • Optional output either analog or DC 24V power
  • Display with super rate LED
Product Description:
space
space Model MEF is specially designed as DC versatile rate meter for process applications, it features1. Wide range of DC input, over 10 voltage & current ranges as (0-20, 0-40mA or 0-10V ect.) 2. Scaleable display in required engineering units .rangeing from 0 to ±4000 counts. 3. Option of analog output of a mV per count, or simulated DC24V power applied to two wire system 4. SIC heart of conversion module much simplifying maintance process. 5. 4-1/2 digits, high accuracy resolution.
spacer
Specifications :
spacer
Range:
Accuracy (23 + 3°C): 0.04% fs + 2 counts
Stability : Temperature coeficient < 50 ppm per degree C, long term draft < 0.1% per year
Digits & counts: 4-1/2 digits
Display : 0.56” super rate LED
Input Range: Voltage : minimum span +10 mV, maximum span + 400 VCurrent : minimum span + 1 mA, maximum span + 200 mA
Input Resistance: > 1 M for voltage input, < 20 for current input
Overload : Over Current Auto trip protectionVoltage : maximum 500Vrms for > 2 V input range selection, maximum 100 vrms for < 2 V selection
Switchable functions: Input ranges selection :under defined with switches & terminal s selection Display reading : conditioned with adjustable gain & offset from 0 to +19999 counts
Noise Rejection; Cmrr > 120 db, Nmrr > 100 db.
Common Mode Voltage: 2KVrms / 1 minute
Surge test : ANSI C37.90 / 1989, IEC 255-3 (1989)
Operating Temperature: -10 to 55oC, 0-99% RH non-condensed, storage -25 to 70°C
Auxilliary Power: AC ± 15% < 3.5 VA, DC ± 20% < 5 watts
Applied rules and standards
Measuring & conversion: IEC 688
Dielectric strength: IEC 688
Impulse & Surge test: ANSI C37.90.1/1989IEC 255-3 (1989)
Measuring reliability: VDE 3540
space
spacer
pdf_pic Downloads: General Specifications
base
weblink
index