Prinsip Operasi
Instrumen melakukan pengukuran terus-menerus tingkat setara dosis ambien radiasi gamma dan sinar-X dalam rentang energi yang luas, memantau radiasi alfa, beta, dan neutron, beroperasi sebagai spektrometer radiasi gamma dan pengidentifikasi radioisotop, dan mengukur kontaminasi makanan/tanah dengan radionuklida 137Cs.
Instrumen dilengkapi dengan alarm suara dan visual bawaan, modul GPS, antarmuka USB untuk komunikasi PC. Memori non-volatile memungkinkan perekaman dan penyimpanan hingga 10.000 peristiwa. PM1401K-3 memiliki ukuran yang ringkas dan LCD yang ringan, cerah dan berwarna, casing hermetis yang tahan guncangan dan dapat digunakan di lingkungan dalam dan luar ruangan.
Karakteristik
| Detector | CsI(Tl), GM, 6LiF/ZnS |
| DER indication range | from 0.01 μSv/h to 200 mSv/h |
| DER measurement range | 0.1 μSv/h – 100 mSv/h (10 μR/h – 10 R/h) |
| DER measurement accuracy | ±(15 + 0.0015 / Ḣ) %; where Ḣ – measured dose equivalent rate value in mSv/h (in the range from 0.1 μSv/h to 100 mSv/h) |
| Energy range | within the range of energies from 0.015 to 0.045 MeV± 40 %;within the range of energies from 0.045 to 15.0 MeV± 30 %Neutron count ratefrom thermal to 14MeVof β- radiation flux0.15 – 3.5 MeV |
| Energy response relative to 0.662 MeV | 137Cs, no more than± 30 % |
| Alarm Type | audible |
| Drop test on concrete floor | 0.7 m. |
| Ingress protection | IP65 |
| Power supply | 3.0 (+ 0.2; -0.4) V; two AA batteries or USB |
| Battery Lifetime | (in normal radiation background and provided LCD backlight, sound and light alarms are used no more than 5 minutes/day), at least210 h. |
| Additional functions | Clock-calendar mode (time, date), timer mode (set of time intervals) , stop-watch mode (measurement of time intervals) |
| Weight | ≤ 0.82 kg |
| PC communication | USB interface |
| Operating temperature | -30 to up to +50 °С |
| Atmospheric pressure | from 84 to 106.7 kPa |
| Dimensions | 262х60х65 mm |
| Humidity | up to 95 % at 35 °С |
| Mean service lifetime | ≥ 10 years |
| Activity measurement sample density range | 0.2 – 1.6 g/cm3 |
| Count rate indication range in the search mode | 1.00 – 2.7·105 s-1 – α-, β-, γ- radiation |
| Indication range | gamma (in a search mode)1 – 9999 cpsneutron (in a search mode)0.01 – 999 cps |
| Number of γ-radiation scintillation spectra saved in the instrument’s memory | up to 1000 |
| Sensitivity for β-radiation | for 90Sr+90Y≥ 3.5 pulses·cm2 |
| Sensitivity to α-radiation (for Pu-239) | ≥ 0.5 pulses·cm2 |
| Sensitivity, neutron radiation | for Pu-α-Be≥ 0.1 pulses·cm2for thermal neutrons≥ 3.5 pulses·cm2for Pu-α-Be (with neutron moderator)≥ 0.6 pulses·cm2 |
| α- radiation flux density accuracy | on 239Pu in the range from 15.0 to 105 min-1·cm-2±(20 + 450/φ) %, where φ – measured α-radiation flux density, -1·cm-2 |
| α-radiation flux density measurement range | 15.0 to 105 min-1·cm-2 |
| β- radiation flux density accuracy | on 90Sr+90Y± (20 + 60/φ) %, where φ – measured β-radiation flux density, min-1·cm-2 |
| β- radiation flux density measurement range | 6.0 to 105 min-1·cm-2 |