Thermo Fisher Scientific SAMs are operating at most North American power utility sites for releasing tools and small articles from controlled areas. The SAM11LE is ideal for applications requiring low energy gamma emitters acommodated by its low density, high strength liner.
Product Detail
Low level gamma monitor for 241Am, Pu and HEU, based on the NE SAM11.
Photon energy range: 20 keV to 2 MeV
Low Z replaceable liner
Measures fixed, smearable, internal and external contamination simultaneously
Excellent response uniformity
Effective for single fragments or dust
2" composite background shield
Minimum training requirements
Rugged low maintenance construction
6 detectors give virtually 4pi coverage
Single door and two door versions
Easy setup and calibration procedure
No separate PC requirement
"Don't Risk It when you Frisk It - just Slam It and SAM It!"
Performance in brief
SAM11LE detects:
8 nCi (300 Bq) activity within 10 seconds
3.7 nCi (137 Bq) within 100 seconds
[241Am in 10µR/h (0.1µSv) background, at 90% confidence, <0.1% false alarms]
Operating Temp. Range 0 to 45 °C (32 to 113 ° F). Humidity range, up to 95% non-condensing.
EMC & LVD :
EMC Compliances: EN 50081 (emissions), EN 50082 (immunity). LVD Compliances: EN 61010
Dimensions :
877 x 687 x 837 mm (34.5” H x 27” W x 33” D*) *922 mm (36.3”) for 6 detector, 2 door option.
Weights :
670 kg (1480 lb) nett, 770 kg (1700 lb) packed (1” lead) 1380 kg (3040 lb) nett, 1480 kg (3270 lb) packed (2” lead).
Power :
Integral 12 V power pack, 12 hours operation if AC supplies are lost. Integral continuous Dual State Float Charger, 85-264 V AC, 47 - 63 Hz 65 VA.
Detectors :
4 or 6, BC-408 plastic scintillation detectors, 225 in² (1451 cm²) each. The 4 detector SAM11 has detectors in the base, top and two sides. The 6 detector option has additional detectors in the front and at the back. Detectors are fitted with a magnetic shield.
2.5 cm or 5 cm (1” or 2”) lead shielding may be specified as standard.
Doors :
One or two doors may be specified.
Performance :
5000 dpm detection Limits at 90% confidence (1.3 σ), ≤ 0.1%, False Alarms (3.1 σ). 4 detector/2.5 cm (1”) lead version detects 5000 dpm within 10 σ in backgrounds up to 15 µR/h (0.15 µSv/h). 6 detector/ 5 cm (2”) lead version detects 5000 dpm within 30 σ” backgrounds up to 100 µR/h (1 µSv/h).
Measuring Volume :
381 x 381 x 457 mm depth (15” x 15” x 18”)
Typical Efficiencies :
(% 4π, at standard 75 mm (3”) calibration point). 6 detector version: Co60: 61%. Cs137 26%. Mn54: 30%. Low energy option: Am241; 13%.
Energy Range :
50 keV to 2 MeV
Signal Thresholds :
1 fixed, 1 programmable used for setting best signal over background ratio.
Display :
240 x 128 graphics display
Switches :
Door switch for background collection.
Pushbutton to activate count cycle.
Parameters :
Choice of dpm, nCi or Bq for: reliably detected activity, alarm level, (1 to 1,000,000) and high level alarm, (1 to 1,000,000).
Low counts alarm :
0 to 99.999 cps
Monitor Time :
1 to 100 σ
False Alarm :
0.1 to 10 σ
Confidence Level :
0 to 10 σ
User Functions :
Language choice; Auto recount; Screen messages; Results printout; 100,000 hr indicator LED; Changing background alert
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