This manual covers the operation, specifications, maintenance, and calibration of the Fluke 451P and 451P-DE-SI pressurized ion chamber survey meters for…
The Fluke 451P and 451P-DE-SI are handheld, pressurized, battery-operated instruments designed to measure gamma and X-rays above 25 keV and beta rays above 1 MeV. The device features a 2 1/2 digit LCD display with an analog bar graph, automatic range switching, and an automatic background light that activates in low-light conditions. It includes a built-in alarm that flashes if the radiation rate exceeds 5 R/h. This manual is written in Chinese.
| Detectable Radiation | Beta rays >1 MeV, Gamma/X-rays >25 keV |
|---|---|
| Accuracy | ±10% of full scale |
| Detector Volume | 230 cc |
| Battery Life | Over 200 hours |
| Dimensions | 8.5" (l) ×4.5" (w)×8.6" (h) |
| Weight | Approximately 1.2 kg |
The instrument detects beta rays above 1 MeV and gamma/X-rays above 25 keV.
The initial warm-up time is less than 1 minute when the instrument is in thermal equilibrium with the environment.
The built-in alarm flashes on the display to notify the user.