Measurement ±10 V

Measurement mode

±10 V

Measuring range, nominal

-10…+10 V

Measuring range, end value (FSV)

10 V

Measuring range, technically usable

-10.737…+10.737 V

PDO resolution (including sign)

24 bit

16 bit 2)

PDO LSB (Extended Range)

1.28 µV

327.68 µV

PDO LSB (Legacy Range)

1.192.. µV

305.18.. µV

Basic accuracy: Measuring deviation at 23°C, with averaging, typ. 1)

< ±0.015 %, < ±150 ppmFSV

< ±1.5 mV

Extended basic accuracy: Measuring deviation at 0…55°C, with averaging, typ. 1) 6)

< ±0.023 %, < ±230 ppmFSV

< ±2.3 mV

Offset/Zero point deviation (at 23°C) 1)

EOffset

< 30 ppmFSV

Gain/scale/amplification deviation (at 23°C) 1)

EGain

< 140 ppm

Non-linearity over the whole measuring range 1)

ELin

< 40 ppmFSV

Repeatability, over 24 h, with averaging 1)

ERep

< 20 ppmFSV

Temperature coefficient, typ. 1)

TcGain

< 5 ppm/K

TcOffset

< 2 ppmFSV/K

< 20 µV/K

Largest short-term deviation during a specified electrical interference test

±0.03% = 300 ppmFSV typ.

Input impedance ±Input 1

(internal resistance)

 

Differential typ. approx. 4.12 MΩ || 11 nF

CommonMode typ. approx. 40 nF against SGND

1) valid for ELM3504-00x0 since HW06, ELM3502-00x0 since HW05

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.

ELM3502 (20 ksps)

Noise (without filtering)

ENoise, PtP

< 80 ppmFSV

< 625 digits

< 0.80 mV

ENoise, RMS

< 13 ppmFSV

< 102 digits

< 130.00 µV

Max. SNR

> 97.7 dB

Noisedensity@1kHz

< 1.30 Measurement ±10 V 1:

Noise (with 50 Hz FIR filter)

ENoise, PtP

< 9 ppmFSV

< 70 digits

< 90.00 µV

ENoise, RMS

< 1.5 ppmFSV

< 12 digits

< 15.00 µV

Max. SNR

> 116.5 dB

ELM3504 (10 ksps)

Noise (without filtering)

ENoise, PtP

< 60 ppmFSV

< 469 digits

< 0.60 mV

ENoise, RMS

< 10 ppmFSV

< 78 digits

< 100.00 µV

Max. SNR

> 100.0 dB

Noisedensity@1kHz

< 1.41 Measurement ±10 V 2:

Noise (with 50 Hz FIR filter)

ENoise, PtP

< 9 ppmFSV

< 70 digits

< 90.00 µV

ENoise, RMS

< 1.5 ppmFSV

< 12 digits

< 15.00 µV

Max. SNR

> 116.5 dB

Preliminary specifications:

Measurement mode

±10 V

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.

Measurement ±10 V 3:
Representation ±10 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.