Measurement ±640 mV

Measurement mode

±640 mV

Measuring range, nominal

-640…+640 mV

Measuring range, end value (FSV)

640 mV

Measuring range, technically usable

-687.2…+687.2 mV

PDO resolution (including sign)

24 bit

16 bit 2)

PDO LSB (Extended Range)

81.92 nV

20.97152 µV

PDO LSB (Legacy Range)

76.29.. nV

19.53.. µV

Input impedance ±Input 1

(internal resistance)

Differential typ. 4.12 MΩ || 11 nF

CommonMode typ. 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”

Measurement mode

±640 mV

Basic accuracy: Measuring deviation at 23°C, with averaging

< ±0.005 %, < ±50 ppmFSV typ.

< ±32.0 µV typ.

Offset/Zero point deviation (at 23°C)

EOffset

< 20 ppmFSV

Gain/scale/amplification deviation (at 23°C)

EGain

< 40 ppm

Non-linearity over the whole measuring range

ELin

< 25 ppmFSV

Repeatability, over 24 h, with averaging

ERep

< 5.0 ppmFSV

Temperature coefficient

TcGain

< 2 ppm/K typ.

TcOffset

< 1.5 ppmFSV/K typ.

< 0.96 µV/K typ.

Preliminary data

Measurement mode

±640 mV

Noise (without filtering)

ENoise, PtP

< 70 ppmFSV

< 547 [digits]

< 44.80 µV

ENoise, RMS

< 12 ppmFSV

< 94 [digits]

< 7.68 µV

Max. SNR

> 98.4 dB

Noisedensity@1kHz

< 0.11 Measurement ±640 mV 1:

Noise (with 50 Hz FIR filtering)

ENoise, PtP

< 12 ppmFSV

< 94 [digits]

< 7.68 µV

ENoise, RMS

< 2.0 ppmFSV

< 16 [digits]

< 1.28 µV

Max. SNR

> 114.0 dB

Common-mode rejection ratio (without filtering)

DC: >115 dB typ.

50 Hz: >105 dB typ.

1 kHz: >80 dB typ.

Common-mode rejection ratio (with 50 Hz FIR filtering)

DC: >115 dB typ.

50 Hz: >115 dB typ.

1 kHz: >115 dB typ.

Largest short-term deviation during a specified electrical interference test

±0.03% = 300 ppmFSV typ.

Measurement ±640 mV 2:
Representation ±640 mV 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.