Measurement ±60 V
ELM3002-02x5 (channel 1, channel 2), ELM3002-04x5 (channel 1 only)
Measurement mode | ±60 V | ||
|---|---|---|---|
Measuring range, nominal | -60 …+60 V | ||
Measuring range, end value (FSV) | 60 V | ||
Measuring range, technically usable | -64.414…+64.414 V | ||
PDO resolution (including sign) | 24 bit | 16 bit 2) | |
PDO LSB (Extended Range) | 7.68 µV | 1.966 mV | |
PDO LSB (Legacy Range) | 7.152.. µV | 1.831.. mV | |
Measurement mode | ±60 V | ||
Basic accuracy: Measuring deviation at 23°C, with averaging 6) | < ±0.055 %FSV, < ±550 ppmFSV typ. < ±0.03 V typ. | ||
Extended basic accuracy: Measuring deviation at 0…55°C, with averaging 6) | < ±0.069, < ±690 ppmFSV typ. < ±41.4 mV typ. | ||
Offset/Zero point deviation (at 23°C) | EOffset | < 540 ppmFSV | |
Gain/scale/amplification deviation (at 23°C) | EGain | < 75 ppm | |
Non-linearity over the whole measuring range | ELin | < 30 ppmFSV | |
Repeatability | ERep | < 15 ppmFSV | |
Temperature coefficient | TcGain | < 10 ppm/K typ. | |
TcOffset | < 8 ppmFSV/K typ. < 0.48 mV/K typ. | ||
Largest short-term deviation during a specified electrical interference test | < ±0.1 %FSV typ. | ||
Input impedance ±Input (internal resistance) | Differential typ. approx. > 10 MΩ || < 1nF CommonMode typ. against SGND: tbd. | ||
2) The analog measurement is always done with 24 bits, in 16-bit mode the eight least significant bits are cut off. For further information see chapter “Commissioning”/ “Process data overview”
6) Calculated value according to the equation for estimating usability at the given ambient temperature point or estimating usability over the specified ambient temperature range in operation (Tambient) as stated in chapter "General information on measuring accuracy/measurement uncertainty". In real use, for example at a relatively constant ambient temperature Tambient, a lower (better) achievable uncertainty is attained. A specific calculation according to chapter "General information on measuring accuracy/measurement uncertainty" is recommended, especially if the instrument allows a wider ambient temperature range in operation than 0...55 °C.
ELM3002-02x5 (channel 1, channel 2), ELM3002-04x5 (channel 1 only) (50 ksps)
Noise (without filtering) | ENoise, PtP | < 240 ppmFSV | < 1875 digits | < 14.4 mV |
ENoise, RMS | < 20 ppmFSV | < 156 digits | < 1.2 mV | |
Max. SNR | > 94 dB | |||
Noisedensity@1kHz | < 7.59 | |||
Noise (with 50 Hz FIR filter) | ENoise, PtP | < 16 ppmFSV | < 125 digits | < 0.96 mV |
ENoise, RMS | < 3 ppmFSV | < 23 digits | < 0.18 mV | |
Max. SNR | > 110.5 dB | |||
Crosstalk (without filter), typ. | DC: > tbd. dB | 50 Hz: > tbd. dB | 1 kHz: > tbd. dB | |
Crosstalk (with 50 Hz FIR filter), typ. | DC: > tbd. dB | 50 Hz: > tbd. dB | 1 kHz: > tbd. dB | |
