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- True process dc rate monitor
- Wide range of dc voltage & current input
- Scaleable in engineering unit
- High accuracy of 0.05%
- linear dc output or 24Vvdc power output (optional)
- Two wire application
- 3-3/4 digits of maximum 3999 counts
- Display with super rate LED
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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. Gain & offset ( fine & coarse adjustment both ) from 0 to 165% full scale |
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| Range: |
| Accuracy (23 + 3°C): |
0.05% fs + 1 count |
| Stability : |
Temperature coefficient < 50 ppm per degree C, long term draft < 0.1% per year |
| Digits & counts: |
3-3/4 digits of maximum 3999 counts |
| Display : |
0.56” super rate LED |
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| Overload : |
Maximum 1 ampere for current input, maximum 250V for voltage input |
| Dielectric strength: |
2KVrms / 1 minute, 50 / 60 Hz |
| Noise Rejection; |
Cmrr > 120 db, Nmrr > 100 db. |
| Common Mode Voltage: |
2KVrms / 1 minute |
| 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 ± 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 |
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 General Specifications |
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