Measurement IEPE ±20 mV

Measurement mode

±20 mV

Measuring range, nominal

-20…+20 mV

Measuring range, end value (FSV)

20 mV

Measuring range, technically usable

-21.474…+21.474 mV

PDO resolution (including sign)

24 bit

16 bit 2)

PDO LSB (Extended Range)

2.56 nV

655.36 nV

PDO LSB (Legacy Range)

2.384.. nV

610.37.. nV

Input impedance ±Input 1

(internal resistance)

Differential typ. 2 MΩ || 1 nF

CommonMode typ. 10 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

±20 mV

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

< ±0.04 % = 400 ppmFSV typ.

< ±8 µV typ.

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

< ±0.077 %, < ±770 ppmFSV typ.

< ±15.4 µV typ.

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

EOffset

< 380 ppmFSV

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

EGain

< 60 ppm

Non-linearity over the whole measuring range 1)

ELin

< 100 ppmFSV

Repeatability, over 24 h, with averaging 1)

ERep

< 25 ppmFSV

Temperature coefficient 1)

TcGain

< 4 ppm/K typ.

TcOffset

< 20 ppmFSV/K typ.

< 0.4 µV/K typ.

Largest short-term deviation during a specified electrical interference test

Value to follow

1) Valid for ELM3602-00x0 from HW08, ELM360x-00x2 from HW09, ELM3604-00x0 from HW10; specifications of predecessor-HW on request

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.

ELM3602 (50 ksps)

Measurement mode

±20 mV

Noise (without filtering)

ENoise, PtP

< 1200 ppmFSV

< 9375 digits

< 24 µV

ENoise, RMS

< 200 ppmFSV

< 1563 digits

< 4 µV

Max. SNR

> 74 dB

Noisedensity@1kHz

< 40 Measurement IEPE ±20 mV 1:

Noise (with 50 Hz FIR filter)

ENoise, PtP

< 140 ppmFSV

< 1094 digits

< 2.8 µV

ENoise, RMS

< 23 ppmFSV

< 180 digits

< 0.46 µV

Max. SNR

> 92.8 dB

Crosstalk (without filter)

DC: tbd. dB typ.

50 Hz: tbd. dB typ.

1 kHz: tbd. dB typ.

Crosstalk (with 50 Hz FIR filter)

DC: tbd. dB typ.

50 Hz: tbd. dB typ.

1 kHz: tbd. dB typ.

ELM3604 (20 ksps)

Measurement mode

±20 mV

Noise (without filtering)

ENoise, PtP

< 700 ppmFSV

< 5469 digits

< 14 µV

ENoise, RMS

< 120 ppmFSV

< 938 digits

< 2.4 µV

Max. SNR

> 78.4 dB

Noisedensity@1kHz

< 24 Measurement IEPE ±20 mV 2:

Noise (with 50 Hz FIR filter)

ENoise, PtP

< 80 ppmFSV

< 625 digits

< 1.6 µV

ENoise, RMS

< 16 ppmFSV

< 125 digits

< 0.32 µV

Max. SNR

> 95.9 dB

Crosstalk (without filter)

DC: < -100 dB typ.

50 Hz: < -100 dB typ.

1 kHz: < -75 dB typ.

Crosstalk (with 50 Hz FIR filter)

DC: < -100 dB typ.

50 Hz: < -120 dB typ.

1 kHz: < -120 dB typ.

Measurement IEPE ±20 mV 3:
Representation ±20 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.

Frequency response: See data within Measurement IEPE ±10 V