Radiation Detection Kit for First Responders
Includes Three Different Radiation Probes
The ERK-525-3 is a complete portable radiation monitoring system designed to measure a broad range of radioisotope contamination under field conditions. The system features three probes: scintillation, pancake G-M and high range gamma G-M. The DSM-525 is a dual probe survey meter, which allows the two seperate probes simultaneously connected. The system with scintillation and pancake G-M measures contamination and dose levels from micro-R to 200 mR/h. The GP-1003 high range probe can measure gamma up to 10 R/hr. The ERK-525-3 does not require changing probes to obtain the full operational benefits of the system, except when using the GP1003. The probe is “Hot Swapped", when needed. the user needs only to turn the selector switch to the desired probe and the rest of the operation is automatic. The instrument and accessories are contained in a durable water-resistant carrying case for easy storage and portability.
Components:
DSM-525 Dual Probe Survey Meter/Scaler
with digital display
The DSM-525 is a microprocessor Scaler/Ratemeter with a large digital display and separate inputs for 2 detectors. The 525 has separate adjustable HV supplies for each detector and each detector can have different DOSE & CPM calibrations. Inputs can have different functions i.e. Ratemeter on one input and Scaler on the other input. A threshold that is variable from 0– 100 % on the input signal eliminates unwanted signals below preset amplitudes. Alarms are provided from 5 - 95% of full scale. Both probes can be connected and only require adjusting selector switch to the probe for completely automatic operation.
Pancake G-M Radiation Survey, How-to Article
DSM-525 Meter Specifications:
Input Sensitivity: 0.05 Volts
Units: CPM, mR/hr, KCPM, CPS, uR/hr, R/hr, uSv/hr, mSv/hr, Sv/hr
Threshold Variable: from 0-100% of input signal
Display: 4 Digits 19 mm high, LCD with Led Backlight
Display: Back light Push Button ON for 30 seconds Auto Off
Dose Ranges # 1 Probe: 0.0 μR/hr to 9999 R/hr & 0.0 μSv/hr to 999.9 Sv/hr
Dose Ranges # 2 Probe: 0.0 μR/hr to 9999 R/hr & 0.0 μSv/hr to 999.9 Sv/hr
Scaler Ranges: 0-9,999 cps, 0-9999 cpm & 0-9999 Kcpm
Scaler Count Time Ranges: 10 second increments to 2500 seconds
Calibration Controls: Standard 12 turn Potentiometer for each range
Range: Adjustment Auto-ranging
Electrical Linearity: ±5%
Response Time Slow: 20 seconds FS, Fast: 4 Seconds FS
Drift: <5%
Environmental: -20 deg F (-28 deg C)-140 deg F (60 deg C) | 5-95% RH IPX4 Housing
HV: 1 & 2 ( Separate Adjustment) Adjustable 300-1500 VDC | Regulation ±1%
Audio: Front panel switch—water & solvent resistant
Battery: six AA batteries, Nominal 200 hours operation
Dimensions: 5.5" (14cm) H X 4" (10cm) W X 7" (18cm) L
Weight: 2.5 lbs (1.1kilo) W/ Batteries
Construction: Heavy Duty Cast Aluminum & Stainless Steel
Alarm: 5-95% of full scale
Data Output: 9 Pin Serial RS-232 — Panel manual data switch (optional, but no extra cost)
MRSP-1 Plastic Scintillation Probe
The MRSP-1 plastic scintillation probe our newest microR Detector. The probe is tissue equivalent, and has greater accuracy and sensitivity than a sodium iodide chamber. It is sensitive to gamma radiation at the microR level between 15 keV and 2 MeV. The range is 0-10,000 micro R.
Specifications
General: Micro R Detector
Range: 0 -
5,000 Micro R
Energy Response: Gamma: 40 keV-2MeV
Operating Voltage: 900 vdc
Window Density: 7 mg/cm2
Dead Time: <5 μSec
Sensitive to Cs-137: 60 CPM/μR/hr
Sensitive Area: 1” (2.54cm) X 1” (2.54cm)
Environmental: -20°F (-28° C)— 140°F (60° C) — 5 - 95% RH, IPX4 Housing
Dimensions: 1.875” (4.76cm) Diameter X 6” (15.2cm) Long
Weight: 0.5 Pounds (.23 kilos)
HP-265 G-M Pancake Probe
The 2.5 inch pancake G-M probe is ideal for general purpose survey. This G-M probe detects alpha, beta, and gamma radiation. The HP-265 measures 14C, 32P, 35S and 137Cs with notable efficiency.
Specifications
Description: Long life halogen pancake G-M detector with 1.6 mg/cm2 End Window
Efficiency (4pi geometry): Typically 5%-C-14; 22%-Sr-90/Y-90; 19%-Tc-99; 32%-P-32; 15%-Pu-239, Gamma dose to 200 mR/hr (Based on 137Cs calibration)
Operating Voltage: 900 vdc
Window Thickness: 1.6mg/cm2
CPM/mR/hr: (137CS): 2,500
Energy Response: Alpha - 3.5 meV min, Beta - 1 keV min, Gamma - 20 keV-2 meV
Sensitive Area: 15 cm2
Finish: Polyurethane Coated Aluminum
Dimensions: 2.75" diameter. X 11" long
Weight: 16 ounces
Environmental: 20º - 60ºC, 5% - 95% RH non-condensing---IPX4
Construction: Polyurethane coated aluminum probe housing, nylon coated stainless steel probe clip
GP-1003 Energy Compensated G-M Detector
The GP-1003 cylinder G-M probe is energy compensated to 10,000 mR/hr. Efficient energy response ranges from 50 keV to 2 MeV. The detector includes rugged anodized aluminum housing with BNC coaxial connector for quick field replacement.
General Use Gamma Dose Rate Measurements
Detector Type Energy Compensated, Halogen-Quenched GM Tube
CPM Range 0-999.9 Kcpm
Dose Range 100 µR/hr -10 R/hr (Cs137)
Energy Response ± 20% (60keV – 3 MeV)
Sensitivity (Cs137 gamma) ≈ 90 cpm/mR/hr
Operating Voltage 500 vdc
Dead Time ≈ 15 µsecv
Compatibility All Johnson Rate Meters
Environmental -20°F[-28°C] to 140°F[60°C] 5-95% RH
Connector BNC (other types available)
Dimensions 1 ” (2.5cm) Dia x 4” (10cm) L
Weight 4 oz (0.11 kg)
Check Source and Holder
Cs-137 1 uCi, 1 inch check source with holder
Waterproof Hard Case - Plano, Pelican or similar
