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 | |||
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 | |||
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. |

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