Key facts
- Brand
- Fluke
- Model
- 451P-DE-SI
- Category
- Other Electronics
- Industry
- Industrial
- Documents
- 2
- Languages
- ZH · EN
- Last added
- 2026-10-18
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Fluke 451P & 451P-DE-SI Ion Chamber Survey Meter Operators Manual
The Fluke 451P and 451P-DE-SI Ion Chamber Survey Meters are hand-held, pressurized, battery-operated units designed to measure gamma, x-ray, and beta radiation. The device features a 2 1/2 digit liquid crystal display with an analog bargraph, auto-ranging capabilities, and an auto-on backlight. It utilizes two 9-volt batteries for operation and includes an internal factory-set alarm for high radiation rates.
Read onlineFluke 451P-DE-SI specifications
| 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 |
Source: Fluke 451P & 451P-DE-SI Pressurized Ion Chamber Survey Meter User Manual
All Fluke 451P-DE-SI documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What is the minimum energy for beta and gamma detection?
The instrument detects beta rays above 1 MeV and gamma/X-rays above 25 keV.
From: Fluke 451P & 451P-DE-SI Pressurized Ion Chamber Survey Meter User Manual
How long does the instrument take to warm up?
The initial warm-up time is less than 1 minute when the instrument is in thermal equilibrium with the environment.
From: Fluke 451P & 451P-DE-SI Pressurized Ion Chamber Survey Meter User Manual
How long does the warm-up time take?
The warm-up time is about four minutes for readings less than 20 μR/h in a 10 μR/h or less background, or less than one minute for initial operation if in temperature equilibrium.
From: Fluke 451P & 451P-DE-SI Ion Chamber Survey Meter Operators Manual
What happens when the LOW BATTERY indicator blinks?
When the LOW BATTERY indicator blinks, there is less than one hour of operation remaining.
From: Fluke 451P & 451P-DE-SI Ion Chamber Survey Meter Operators Manual