LUDLUM 9DP-1 Pressurized Ion Chamber (2 µSv/h ~ 500 mSv/h)

Radiation Detected: Gamma & X-rays above 25 keV; Beta above 1 MeV; Correctly integrates pulsed fields with 50 ns pulse widths

Energy Response: ± 25% from 60 keV to 1.25 MeV (see Graph)

Detection Range (auto-ranging): 

Sv/h units*: 2 - 50 μSv/h, 2 - 500 μSv/h, 0 - 5 mSv/h, 0 - 50 mSv/h, 0 - 500 mSv/h

R/h units:  0.2 - 5 mR/h, 0.2 - 50 mR/h, 0 - 500 mR/h, 0 - 5 R/h, 0 - 50 R/h

Gy/h units: 2 - 50 μGy/h, 2 - 500 μGy/h, 0 - 5 mGy/h, 0 - 50 mGy/h, 0 - 500 mGy/h

rem/h units: 0.2 - 5 mrem/h, 0.2 - 50 mrem/h, 0 - 500 mrem/h, 0 - 5 rem/h, 0 - 50 rem/h

* Users wanting to take measurements in Sv/h units should see the Model 9DP-1* which is specifically designed to measure ambient equivalent dose.

Measurement Readouts: Simultaneous display of rate and either the integrated value, highest (peak) rate, or pulsed mode status

Drift: Less than 0.3 µSv/h (30 µR/hr, 0.3 µGy/h, 30 µrem/h)

Chamber Volume: 220 cm3 volume pressurized to 2.5 atm (22 psig)

Chamber Density: Chamber wall density is 601.7 mg/cm2, Can wall density is 332.5 mg/cm2. Total density of chamber + can is 934.2 mg/cm2.

Accuracy: ± 10%

Response Time: Ranges from 7 seconds in lowest range to under 2 seconds in highest range when measuring from 10% to 90% of final value

Display: LCD with 8.9 cm (3.5 in.) diagonal, 240 H x 320 W pixels, TFT active matrix, 232K colors, 220 cd/m2, automatic sensor-controlled backlighting

USB Interface: Single USB 2.0 port.

Geotropism: less than 1%

Power: Eight rechargeable "AA" NiMH batteries, supplied with wall charger for direct connection to instrument

Size (H x W x L): 21.9 x 11.6 x 24.5 cm (8.6 x 4.6 x 9.6 in.)

Weight: 1.5 kg (3.3 lb), including batteries

Datasheet

Manual

Video