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DSM-506 W/ HP-265 PROBE

Plus Internal GM Detector

The DSM-506 combined with the HP-265 PROBE gives the user great flexibility when surveying for contamination from alpha, beta or gamma isotopes plus the ability to survey for gamma dose rates up to 2000 mR/hr. The rate meter boasts an oversized digital display and has unique counts to dose capability allowing the user to quickly change from count rate to dose rate and back by simply flipping a toggle switch. Other features include a scaler for counts per unit of time, display error indications and audible/visual ALARMS.

SPECS DSM-506 W/ HP-265 PROBE

FEATURES

  • SURVEY FOR ALPHA, BETA AND GAMMA CONTAMINATION
  • SURVEY FOR GAMMA DOSE RATES UP TO 2000 mR/hr
  • LARGE DIGITAL DISPLAY
  • AUTO RANGING UNITS
  • DUAL MODE CAPACITY FOR
  • DOSE RATE & COUNT RATE
  • AUDIBLE/VISUAL ALARMS

DSM-506 SPECIFICATIONS

Dose/Counts Switch Change Dose Rate to Count Rate by Toggling an External Switch
Display LCD 4-Digit x .75″ LCD w/LED Backlight
Internal Detector Energy Compensated GM Tube
Energy Range 60 keV – 3 MeV
Internal Detector Dose Range 50 μR/hr-2000mR/hr or equivalent Sv/hr
External Probe Connector All Johnson Probes
CPM Range 0-999.9 Kcpm or Kcps
Probe Linearization Internal adjust for calibration constant and dead time
Scaler Ranges 0-999.9 Kcounts
Scaler Count Time Ranges 10-2550 Seconds (10 second increments)
Alarms 5-95% of Range
Diagnostics Low Battery, Over-range – Audible & Visual Alarms
Range Adjustment Auto-Ranging All Scales
Electrical Non-Linearity < 5% Full Scale
Response Time Fast – 10-2550 Seconds (adjustable)/ Slow 10-250 seconds (adjustable)
Drift < 5%
Environmental -20°F[-28°C] to 140°F[60°C]| 5-95% RH IPX4 Housing
High Voltage Adjustable 400-1250 VDC | Regulation +-1%
Battery 6 – “AA” Alkaline (nominal 200hrs Operation)
Dimensions 5.25″(14cm) H X 4″ (10cm) W x 7″(18cm) L
Weight 2.5 lbs. (1.2 Kilos)

HP-265 SPECIFICATIONS

General Use Alpha, Beta, Gamma Detection
Detector Type Halogen-Quenched GM Pancake Tube
CPM Range 0-999.9 Kcpm or Kcps
Dose Range 0-200 mR/hr (Cs137) – Requires linearization above 50 mR/hr
Window 1.7 ± 0.3 mg/cm2 mica, protected by a Copperl screen (79% open)
Window Area Active – 15.5 cm2 (2.4 in2)
Open – 12.3 cm2 (1.9 in2)
Efficiency (4π) C14 – 5%, SrY90 – 22%, Tc99 – 19%, P32 – 32%
Energy Response Energy Dependent
Sensitivity (Cs137 gamma) ≈ 3300 cpm/mR/hr
Operating Voltage 900 vdc
Dead Time 80 µsec
Normal Background ≈ 60 cpm
Environmental -20°F[-28°C] to 140°F[60°C] 5-95% RH
Connector BNC (other types available)
Dimensions 2.74″ (7cm) Dia x 11″ (28cm) L
Weight 1lbs (0.45 kg)