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NORM-PKN

DUAL PROBE N.O.R.M. METER

The NORM-PKN includes the DSM-525, a GM Pancake Probe (cpm) and GSP-1 NaI Scintillation probe (Dose Rate). The combination of the two probes are perfect for measuring NORM and TENORM radiation. The Pancake and Scintillation probes are both connected to the instrument at the same time so the user can switch between them at any time without having to power the instrument down. The Instrument boasts an oversized auto-ranging digital display with features that include a scaler for counts per unit of time, display error indications and audible/visual ALARMS.

SPECS NORM PKN

FEATURES

  • LARGE DIGITAL DISPLAY
  • AUTO RANGING UNITS (cpm for Pancake – µR/hr for Scintillator)
  • DUAL PROBES FOR DOSE RATE (NaI Scintillator)& COUNT       RATE (GM Pancake)
  • AUDIBLE/VISUAL ALARMS
  • NO CHANGING PROBES JUST TURN SELECTOR KNOB TO         DESIRED PROBE
  • SCALER FOR COUNTS PER UNIT TIME

DSM-525 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
Two External Probe Inputs All Johnson Probes
Dose Range Probe Dependent
Energy Range Probe Dependent
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 6.25"(16cm) 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
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
Dimensions 2.74" (7cm) Dia x 11" (28cm) L
Weight 1lbs (0.45 kg)

GSP-1 SPECIFICATIONS

General Use Low Level Gamma Dose Rate Measurements
Detector Type 1” x 1” NaI Scintillator
Dose Range 1 µR/hr – 10 mR/hr (Cs137)
Energy Response 40keV – 2 MeV (Energy Dependent)
Sensitivity (Cs137 gamma) ≈ 175 cpm/µR/hr
Efficiency (4π) ≈ 3%
Background (10 µR/hr) ≈ 1700 cpm
Operating Voltage 600 – 1100 vdc
Dead Time ≈ 35 µsec
Compatibility All Johnson Rate Meters
Environmental -20°F [-28°C] to 140°F [60°C] 5-95% RH
Dimensions 1.5" (3.75cm) Dia x 6” (15cm) L
Weight 10 oz (0.28 kg)