Measuring module KDM25
Measuring module KDM25 is a component of a measuring unit KDR and is designed to measure output voltage of ICP-sensor in one or several measuring valves. Maximum number of measuring channels – eight.
The module serves for applications which require high quality of digitalization of variable signal with high spectral accuracy of transformation, wide dynamic range and high signal-to-noise ratio. Four module channels are strictly parallel, independent, with no commutation delay between each other.
The module can detect short-circuit failures and one-phase open fault of ICP-sensors directly during the measurement process. Eight channels of AD converter are strictly parallel, independent, with no commutation delay between each other
Main technical specifications of KDM25:
|1.||Number of measuring channels||-||8 ICP-sensors communication channels|
|2.||Maximum conversion frequency of AD converter||kHz||78|
|3.||Minimum conversion frequency of AD converter||Hz||610|
|4.||Synchronism of AD converter channels||-||All 8 module LTR25 channels are strictly synchronic, relative phase shift – minimal.|
|5.||Voltage measuring range||V||"~5 В" (RMS value of signal variable component without exceeding signal variable component amplitude "±10 В")|
|6.||Full operating range of signal voltage against AGND||V||From 0 tо +22|
|7.||DC value in ICP-sensor circuit with voltage from 0 to 22 В||mA||
10 ±2% (range 10 mА)
2,86 ±2% (range 2,86 mА)
|8.||Limits of admissible main reduced (to the range end value) measuring error of AC voltage rms value||%||±0,1% (for signal frequency range from 25 Hz to 0,43 Fпр)|