Measurement ±60 V
ELM3002-0205 (channel 1, channel 2), ELM3002-0405 (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 1) | < ±0.055 %FSV, < ±550 ppmFSV typ. < ±0.03 V typ. | ||
Extended basic accuracy: Measuring deviation at 0…55°C, with averaging 1) 6) | < ±0.069, < ±690 ppmFSV typ. < ±41.4 mV typ. | ||
Offset/Zero point deviation (at 23°C) 1) | EOffset | < 540 ppmFSV | |
Gain/scale/amplification deviation (at 23°C) 1) | EGain | < 75 ppm | |
Non-linearity over the whole measuring range 1) | ELin | < 30 ppmFSV | |
Repeatability 1) | ERep | < 15 ppmFSV | |
Temperature coefficient 1) | 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 equation in chapter "General information on measuring accuracy/measurement uncertainty" for quick estimation of usability over the specified ambient temperature range in operation (Tambient). 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.
ELM3002-0205 (channel 1, channel 2), ELM3002-0405 (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 |