Measurement IEPE ±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. 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

±640 mV

Basic accuracy: Measuring deviation at 23°C, with averaging 1) 6)

< ±0.005 % = 50 ppmFSV typ.

< ±32 µV typ.

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

< ±0.0095 %, < ±95 ppmFSV typ.

< ±60.8 µV typ.

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

EOffset

< 20 ppmFSV

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

EGain

< 40 ppm

Non-linearity over the whole measuring range 1)

ELin

< 25 ppmFSV

Repeatability, over 24 h, with averaging 1)

ERep

< 5 ppmFSV

Temperature coefficient 1)

TcGain

< 2 ppm/K typ.

TcOffset

< 1.5 ppmFSV/K typ.

< 0.96 µV/K typ.

Largest short-term deviation during a specified electrical interference test 4)

±0.03 % = 300 ppmFSV typ.

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

4) preliminary data

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.

ELM3602 (50 ksps)

Measurement mode

±640 mV

Noise (without filtering)

ENoise, PtP

< 115 ppmFSV

< 898 digits

< 73.6 µV

ENoise, RMS

< 19 ppmFSV

< 148 digits

< 12.16 µV

Max. SNR

> 94.4 dB

Noisedensity@1kHz

< 0.12 Measurement IEPE ±640 mV 1:

Noise (with 50 Hz FIR filter)

ENoise, PtP

< 18 ppmFSV

< 141 digits

< 11.52 µV

ENoise, RMS

< 3 ppmFSV

< 23 digits

< 1.92 µV

Max. SNR

> 110.5 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

±640 mV

Noise (without filtering)

ENoise, PtP

< 70 ppmFSV

< 547 digits

< 44.8 µV

ENoise, RMS

< 12 ppmFSV

< 94 digits

< 7.68 µV

Max. SNR

> 98.4 dB

Noisedensity@1kHz

< 0.08 Measurement IEPE ±640 mV 2:

Noise (with 50 Hz FIR filter)

ENoise, PtP

< 9 ppmFSV

< 70 digits

< 5.76 µV

ENoise, RMS

< 1.5 ppmFSV

< 12 digits

< 0.96 µV

Max. SNR

> 116.5 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 ±640 mV 3:Fig.15: 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.

Frequency response: See data within Measurement IEPE ±10 V