Beckhoff EPP3504-0023 Short Manual page 26

Product overview
Resistance measurement 2kΩ
Operation mode
Measuring range, nominal
Measuring range, end value (FSV)
Measuring range, technically usable
PDO LSB (Extended Range)
PDO LSB (Legacy Range)
Preliminary specifications:
Resistance measurement 2kΩ
Basic accuracy: Measuring deviation at
23°C, with averaging, with Offset , typ.
Offset/Zero point deviation
(at 23°C)
Gain/scale/amplification
deviation (at 23°C)
Non-linearity over the
whole measuring range
Repeatability (at 23°C)
Noise (without filtering, at
23°C)
Noise (with 50 Hz FIR filter,
at 23°C)
Common-mode rejection ratio (without
3)
filter)
Common-mode rejection ratio (with 50
3)
Hz FIR filter)
Temperature coefficient,
typ.
Largest short-term deviation during a
specified electrical interference test, typ.
1
) The offset specification does not apply to 2-wire operation, since the offset is increased on the device side.
Therefore, a system-side offset adjustment is recommended, see "Note on 2-/3-/4-wire connection in R/RTD
mode". The final targeting basic acuuracy within the 2-wire operation is mainingly dependent by the quality of
this system-side offset adjustment.
26
1)
2/3-wire
3 V feed voltage fixed setting on +Uv
internal 1 kΩ reference resistance at –I2
Supply current is given by:
3 V / (1 kΩ + R
2 kΩ (corresponds to PT1000 +266°C)
2 kΩ
0 ... 2 kΩ
Extended range is not supported for resistance measurement
Resistance measurement not available as separate measuring
range on EPP3504-0023.
1)
2/3-wire
< ± 0.024 %
< ± 240 ppm
< ± 480 mΩ
E < 80 ppm
Offset FSV
E < 180 ppm
Gain
E < 130 ppm
Lin
E < 20 ppm
Rep FSV
E < 220.0 ppm
Noise, PtP
< 1719 digits
< 440.0 mΩ
E < 37.0 ppm
Noise, RMS
< 289 digits
< 74.0 mΩ
Max. SNR > 88.6 dB
Noisedensit
y@1kHz
< 1.05
E < 14.0 ppm
Noise, PtP
< 109 digits
< 28.0 mΩ
E < 2.3 ppm
Noise, RMS FSV
< 18 digits
< 4.6 mΩ
Max. SNR > 112.8 dB
tbd.
tbd.
Tc < 20 ppm/K
Gain
Tc < 8 ppm
Offset FSV
< 16 mΩ/K
tbd. %
FSV
Version: 1.2
4-wire
) → max. 3 mA
measurement
4-wire
< ± 0.022 %
FSV
< ± 220 ppm
FSV
< ± 440 mΩ
< 60 ppm
< 160 ppm
< 130 ppm
FSV
< 20 ppm
< 220.0 ppm
FSV
< 1719 digits
< 440.0 mΩ
< 37.0 ppm
FSV
< 289 digits
< 74.0 mΩ
> 88.6 dB
< 1.05
< 14.0 ppm
FSV
< 109 digits
< 28.0 mΩ
< 2.3 ppm
< 18 digits
< 4.6 mΩ
> 112.8 dB
tbd.
tbd.
< 20 ppm/K
/K < 3 ppm
< 6 mΩ/K
tbd. %
FSV
FSV
FSV
FSV
FSV
FSV
FSV
FSV
FSV
/K
FSV
FSV
EPP3504-0023