Measurement ±160 mV

Measurement mode

±160 mV

Measuring range, nominal

-160…+160 mV

Measuring range, end value (FSV)

160 mV

Measuring range, technically usable

-171.8…+171.8 mV

PDO resolution (including sign)

24 bit

16 bit 2)

PDO LSB (Extended Range)

20.48 nV

5.24288 µV

PDO LSB (Legacy Range)

19.07.. nV

4.882.. 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

±160 mV

Basic accuracy: Measuring deviation at 23°C, with averaging 6)

< ±0.0085 %, < ±85 ppmFSV typ.

< ±13.6 µV typ.

Offset/Zero point deviation (at 23°C)

EOffset

< 65 ppmFSV

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

EGain

< 40 ppm

Non-linearity over the whole measuring range

ELin

< 35 ppmFSV

Repeatability, over 24 h, with averaging

ERep

< 5.0 ppmFSV

Temperature coefficient

TcGain

< 2 ppm/K typ.

TcOffset

< 3.5 ppmFSV/K typ.

< 0.56 µV/K typ.

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 data

Measurement mode

±160 mV

Noise (without filtering)

ENoise, PtP

< 90 ppmFSV

< 703 digits

< 14.40 µV

ENoise, RMS

< 15 ppmFSV

< 117 digits

< 2.40 µV

Max. SNR

> 96.5 dB

Noisedensity@1kHz

< 0.03 Measurement ±160 mV 1:

Noise (with 50 Hz FIR filter)

ENoise, PtP

< 18 ppmFSV

< 141 digits

< 2.88 µV

ENoise, RMS

< 3.0 ppmFSV

< 23 digits

< 0.48 µV

Max. SNR

> 110.5 dB

Common-mode rejection ratio (without filter)

DC: >115 dB typ.

50 Hz: >105 dB typ.

1 kHz: >80 dB typ.

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

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 ±160 mV 2:Fig.17: Representation ±160 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.