|
| Modes of Operation |
SNIFF Rapid response and rapid recovery radon measurement
THORON Radon and thoron measured simultaneously and independently
NORMAL High sensitivity
AUTO Automatic switch from SNIFF to NORMAL after three hours run
GRAB Analysis of grab samples
WAT Automatic analysis of water samples with RAD H2O accessory |
| Multi-Measurements |
Measures radon in air, soil and water (with RAD H2O accessory) |
| Principle of Operation |
Electrostatic collection of alpha-emitters with spectral analysis
Passivated Ion-implanted Planar Silicon detector
SNIFF mode counts polonium-218 decays
NORMAL mode counts both polonium 218 and polonium 214 decays |
| Built-In Air Pump |
Nominal 1 liter/minute flow rate
Inlet and outlet Luer connectors |
| Connectivity |
RS-232 port up to 19,200 baud rate
USB adaptor is included with every RAD7 |
| Measurement Accuracy |
±5% absolute accuracy
0% - 100% RH |
| Nominal Sensitivity |
SNIFF mode : 0.25 cpm/(pCi/L), 0.0067 cpm/(Bq/m3)
NORMAL mode : 0.5 cpm/(pCi/L), 0.013 cpm/(Bq/m3) |
| Range |
0.1 - 20,000 pCi/L (4.0 - 750,000 Bq/m3) |
| Intrinsic Background |
0.005 pCi/L (0.2 Bq/m3) or less, for the life of the instrument |
| Recovery Time |
Residual activity in Sniff mode drops by factor of 1,000 in 30 minutes |
| Operating Ranges |
Temperature : 0° ~ 45° C
Humidity : 0% - 100%, non-condensing |
| Cycle Range |
User controllable number of cycles, from 1 to 99 to unlimited, per runUser controllable cycle time, from 2 minutes to 24 hours |
| Data Storage |
1,000 records, each with 23 fields of data
Log of printer output also stored |
| Sample Pumping |
Built-in pump draws sample from chosen sampling point
Flow rate typically 800mL/min |
| Print Output |
Short, medium or long format data printed after each cycle
Run summary printed at end of run, including averages and spectrum |
| PC Connectivity |
RS232 serial port, full remote control implemented in CAPTURE Software |
| Audio Output |
GEIGER Tone beeps for radon and thoron counts
CHIME Chime only at the end of each cycle, otherwise silent
OFF No sound |
| Tamper Resistance |
TEST LOCK command locks keypad to secure against tampering |
| Dimensions |
29.5 cm x 21.5 cm x 27.9 cm |
| Weight |
4.35 kg |
| LCD Display Output |
2 line x 16 character, alpha-numeric display |
| Case Material |
High density polyethylene |
| Infrared Printer |
Chamjin NewHandy 700 Wireless Infrared Printer included |
| Power Supply |
11-15V DC (12V nominal) @ 1.25A, center pin positive, or included internal EnerSys sealed lead acid rechargeable battery pack (6V nominal, 30Wh, 5Ah) |
| Battery Longevity |
24 hours in SNIFF mode
72 hours in Monitor mode |
