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 Measurement ±60 V 1:

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