The SARAD A²M 4000 manual describes a portable, battery‑powered system for radiation and gas monitoring with multiple detectors and data‑logging features.
The A²M 4000 is a portable, battery‑powered instrument that combines a NaI(Tl) gamma detector, an ion‑implanted silicon detector for alpha spectroscopy, and optional gas sensors for toxic and explosive gases. It features a 6 × 9 cm touch‑screen, 2 GB memory card, and wireless communication via GPRS, GSM, or ZigBee.
The system supports simultaneous operation of all detectors, customizable measurement cycles, and data transfer to a PC via USB, RS‑232, or wireless adapters. Power can be supplied by an internal 12 V rechargeable battery, mains adapter, or optional 12 V car/solar source.
| Touch‑screen size | 6 x 9 cm |
|---|---|
| Data storage capacity | 2 GB memory card |
| Internal battery voltage | 12 V rechargeable |
| Dimensions (W × H × D) | 235 mm × 140 mm × 255 mm |
| Weight | 6 kg |
| Sampling flow rate | 0 … 4 l/min, ±5 % uncertainty |
| Pump type | Rotary vane, 3 l/min |
| Silicon detector area | 400 mm² (optionally up to 2000 mm²) |
| Gamma detector crystal size | 2" × 2" |
| Gamma detector energy range | 10 keV – 3 MeV |
| Gamma detector spectral resolution | 8 % (Cs‑137) |
| Sensitivity (Cs‑137) | 1000 cps/(µSv/h) |
The instrument has an internal 12 V rechargeable battery, can be powered from a mains adapter, or optionally from a 12 V car battery or solar panel.
The device can store up to 2 GB of measurement data on an SD card.