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AH401D
The AH401D is a 4-channel integrating picoammeter from ELS Instruments (formerly CAEN ELS) for very low current measurement from detectors and beam monitors. It offers 20-bit resolution with integration times from 1 ms to 1 s. ProDigitek supplies the AH401D in Australia.

Key specifications
Input channels | 4 |
Full-scale range | 50 pA to 2.0 µA |
Current polarity | Positive only |
Resolution | 20 bit |
Data rate | Up to 1 ksamples/s |
Integration time | 1 ms to 1 s |
Communication | Ethernet 10/100 Mbit TCP-IP and UDP |
Dimensions | 155 x 165 x 42 mm, 560 g |
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