Important: Please select your preferred unit of gamma radiation measurement. Options are mR/hr or uSv/hr. Instrument will ship with the setting you prefer. The default setting is uSv/hr. You can change it anytime using the utility menu (see operation manual).
The RAD 100™ is a general purpose radiation survey meter/geiger counter that detects and measures alpha, beta, gamma, and X-radiation. It is intended for personal safety and educational purposes. Like the popular Radalert® 100X, the RAD 100™ features a 3-second update on its digital liquid crystal display (LCD). The LCD shows the current radiation level in your choice of microSieverts per hour (SI units) or mR/hr for gamma radiation measurements. For mixed sources (alpha, beta, gamma) the CPM mode is recommended. This instrument also offers an accumulated total and timer function, up to 9,999,000 counts and 40 hours. A red LED blinks and a beeper chirps with each count (the chirp can be muted). This is a professional instrument that is also easy to learn to use and to operate, and carries the industry leading Medcom warranty (2 years overall limited to 1 year on the GM sensor). Many instruments designed by the Medcom team are still working perfectly after 30 years of use, so this instrument should provide a lifetime of useful information.
- Halogen-quenched Geiger-Mueller detector (LND712)
- Mica end window density is 1.5-2.0 mg/cm²
- Side wall is 0.012″ #446 stainless steel
- Detects Alpha, Beta, Gamma, and X-radiation
Display: 4-digit liquid crystal display with mode indicators
Accuracy: ±10% typical; ±15% maximum
Alert: No Alert feature. If your intended application requires a user-adjustable Alert, we recommend the Radalert® 100X
Audio: Beeper chirps for each count (can be muted)
Calibration: Cesium 137 (gamma)
Certifications: CE Certified, RoHS Compliant, and Meets WEEE standards
Count Light: Red LED flashes with each count
Designed & Manufactured: Designed and Manufactured in USA by IMI International Medcom, Inc.
|µSv/hr: .000-1,100||CPM: 0-350,000|
|mR/hr: .000-110||CPS: 0-3,500|
|Total: 0-9,999,000 counts||Timer: up to 40 hours|
Options: Computer software and cable available
Operation Manual: Rad 100 Manual
- Output: Stereo 3.5 mm jack sends counts to computers, data loggers, other CMOS-compatible devices, and headphones, and educational data collection systems.0-9 V, 1 kOhm impedance.
- Input: Mono 2.5 mm jack provides calibration input. 0-3.3 V, >5 μs width, rising edge triggered.
Power: One AA alkaline battery (one 9-volt alkaline battery on some models); average battery life typically exceeds 3600 hours at normal background radiation levels at sea level. Battery life decreases as radiation level rises.
Gamma Sensitivity: 1,000 CPM/mR/hr referenced to Cs-137
Size: 150 x 80 x 30 mm (5.9″ x 3.2″ x 1.2″)
Weight: 225 grams (8 oz) including battery
Specifications subject to change without notice.
This product is warranted to the original owner to be free from defects in materials and workmanship for two years from the date of purchase with the exception of the Geiger-Mueller tube, which is warranted for one year. The battery is not included in this warranty. IMI-International Medcom, Inc. will, at its own discretion, repair or replace this instrument if it fails to operate properly within this warranty period provided that it has not been subjected to misuse, abuse, or neglect. Modification or repair of this instrument by anyone other than IMI voids this warranty.
Contamination of this instrument with radioactive materials voids this warranty. Contaminated instruments will not be accepted for servicing at our repair facility.
The user is responsible for determining the suitability of this product for the intended application. The user assumes all risk and liability connected with such use. IMI is not responsible for incidental or consequential damages arising from the use of this instrument.
The terms of this warranty are subject to change without notice.
Protect® Silicone Boot
GeigerLink computer interface USB adapter (works with Medcom Apps)