Skip to main content
α/β detector ADC-1121 measures Alpha and Beta (and Gamma) radiation with high accuracy.
The 2 switches on the grip enable data-saving and time-constant changing, while directing it to the target.
This detector is connectable with TDC-9111.
|Radiation Detected||Alpha, Beta (and Gamma)|
|Detector||ZnS (Ag) Scintillator + Plastic Scintillator|
|Instrument Efficiency||α : 35%/2π±25%, and more than 30%/2π (30%/2π to 43.7%/2π) by 241Am
β : 40%/2π±25% (30%/2π to 50%/2π) by 36Cl
* 0.5cm between detector and source
|Counting Rate Range||α : 0 to 10ks-1, 0 to 100kmin-1
β : 0 to 10ks-1, 0 to 300kmin-1 (Reading in Bq/cm2 on TDC-9111)
|Others||Switches to change time constant and save data, and LED lights|
|Weight||Approx. 320 g (excluding cable and protection cover)|
|Connectable Detectors||α/β detector, β detector, γ detector.
Radiation types are automatically identified when detector is connected.
|Display||Black and white LCD (with backlight and touch panel)|
|Display Mode||Detailed, simplified, time-series, scaler, preset list and user settings|
|Displayed Contents||Measurement value (digital and bar graph), measurement unit,
radiation type, time, time constant, battery level, peak hold value
and overload, etc.
|Sound||Alarm, measurement count|
|Alarm||Settings: α, β and γ can be individually set
Display: alarm, sound simultaneously with LED flashing
|Alarm Clear||AUTO: Automatic clear when the value is under preset
HOLD: Alarming until RESET switch is pressed
|Scaler Mode||Preset time: 1 to 9,999 sec (999,999 counts at max by selecting 0)
Repeat time: 5 times at max
|Earphone||Earphone adapter socket for Micro USB is required|
|Data Saving||Instantaneous value at any time or at preset intervals
144,000 data (in case of 100-day measurement at 60-second intervals)
100 folders can be created at max
|Output||USB2.0, Mass storage class|
|Power||Primary battery: 8 AA alkaline batteries
Secondary battery: 8 AA NiMH batteries
USB supply (USB2.0)
|Battery Life||Connecting ADC-1121
Primary battery: 100 hours or longer (by new batteries at 20 degrees C)
Secondary battery: 70 hours or longer (by full-charged batteries at 20 degrees C)
|Environmental requirements in
|Temperature : -20 to +50 degrees C
Humidity : 90%RH or less (Non-condensing)
|Dimensions||Approx. 10 (W) x 19 (D) x 8.5 (H) cm
(excluding handle and protrusions)
|Weight||Approx. 740g (including batteries, and excluding detector and cable)|
This website includes information intended for healthcare professionals.
Please note that all descriptions in this website conform to the Pharmaceutical and Medical Device Act in Japan as well as other laws and regulations in Japan. Model names, specifications and configurations of products in overseas market outside Japan may be different by the countries.