Measurement ±60 V
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 | ||
Basic accuracy: Measuring deviation at 23°C, with averaging 6) | < ±0.03 %, < ±300 ppmFSV typ. < ±18 mV typ. | |||
Extended basic accuracy: Measuring deviation at 0…55°C, with averaging 6) | < ±0.04 %, < ±400 ppmFSV typ. < ±24 mV typ. | |||
Offset/Zero point deviation (at 23°C) | EOffset | < 20 ppmFSV | ||
Gain/scale/amplification deviation (at 23°C) | EGain | < 100 ppm | ||
Non-linearity over the whole measuring range | ELin | < 280 ppmFSV | ||
Repeatability, over 24 h, with averaging | ERep | < 10.0 ppmFSV | ||
Temperature coefficient | TcGain | < 8 ppm/K typ. | ||
TcOffset | < 2.0 ppmFSV/K typ. < 120 µV/K typ. | |||
Input impedance ±Input 1 (internal resistance) | Differential typ. approx. 485 kΩ || 11 nF CommonMode typ. approx. 40 nF against SGND | |||
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.
Preliminary specifications
Measurement mode | ±60 V | |||
|---|---|---|---|---|
Noise (without filtering) | ENoise, PtP | < 75 ppmFSV | < 586 digits | < 4.50 mV |
ENoise, RMS | < 13 ppmFSV | < 98 digits | < 0.75 mV | |
Max. SNR | > 98.1 dB | |||
Noisedensity@1kHz | < 10.61
| |||
Noise (with 50 Hz FIR filter) | ENoise, PtP | < 12 ppmFSV | < 94 digits | < 0.72 mV |
ENoise, RMS | < 2.0 ppmFSV | < 16 digits | < 0.12 mV | |
Max. SNR | > 114.0 dB | |||
Common-mode rejection ratio (without filter) | DC: >tbd. dB typ. | 50 Hz: >tbd. dB typ. | 1 kHz: >tbd. dB typ. | |
Common-mode rejection ratio (with 50 Hz FIR filter) | DC: >tbd. dB typ. | 50 Hz: >tbd. dB typ. | 1 kHz: >tbd. dB typ. | |
Largest short-term deviation during a specified electrical interference test | ±tbd. % = tbd. ppmFSV typ. | |||
Fig.36: Representation ±60 V measurement range|
Note: In Extended Range Mode the Underrange/Overrange display in the PDO status has the character of an information/warning when the nominal measuring range is exceeded, i.e. no Error is displayed in the PDO status and LED. If the technical measuring range is also exceeded, Error = TRUE is also displayed. The detection limit for Underrange/Overrange Error can be set in the CoE. In Legacy Range mode, an Underrange/Overrange event also leads to an Error in the PDO status. |