FEATURES
- LARGE DIGITAL DISPLAY
- AUTO RANGING UNITS
- DUAL MODE CAPACITY FOR
- DOSE RATE & COUNT RATE
- 3 DETECTORS – INTERNAL GM,
- HP-265 and MRSP-1
ERK-506
EMERGENCY RESPONSE KIT
The DSM-506 kit utilizes the DSM-506 Survey/Scaler meter to measure most alpha, beta, and gamma radiation & contamination fields from background to 2000mR/hr. Internal energy compensated GM detector, HP-265 GM pancake, and the MRSP-1 near tissue-equivalent scintillator are connected to the meter and can have dual (dose or CPM calibrations) that are switch selectable from the front panel. The timed count scaler function makes low-level contamination measurements more accurate once the operator selects the desired probe. Automatic ranging and diagnostics make the system extremely user-friendly. All components of the system are contained in a durable carrying case for easy storage and portability.
| SPECS | ERK-506 |
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 – 2000 mR/hr or equivalent Sv/hr |
| External Probes | HP-265 and MRSP-1 |
| 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) |
MRSP-1 SPECIFICATIONS
| General Use | Low Level Gamma Dose Rate Measurements |
| Detector Type | 1.5” dia x 1” Plastic Scintillator |
| CPM Range | 0-999.9 Kcpm |
| Dose Range | 1 µR/hr – 10 mR/hr (Cs137) |
| Energy Response | 40keV – 2 MeV (near tissue equivalent) |
| Sensitivity (Cs137 gamma) | ≈ 100 cpm/µR/hr |
| Efficiency (4π) | ≈ 2% |
| Background (10 µR/hr) | ≈ 900 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 |
| Connector | BNC (other types available) |
| Dimensions | 1.7″ (4.25cm) Dia x 6” (15cm) L |
| Weight | 4 oz (0.11 kg) |
