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ERK-525 PLUS

EMERGENCY RESPONSE KIT/ 3Probes

The ERK-525+ is a complete portable radiation monitoring system designed tomeasure a broad range of radioisotope contamination under field conditions. The DSM-525 is a dualprobe (connected at the same time) survey meter that measures contamination and dose levels from micro-R to200 mR/hrplus the kit contains a GP-1003 that can measure gamma up to 10 R/hr. The ERK-525+ does not requirechanging probes to obtain the full operational benefits of the system except when using the GP1003 (the probe can be “Hot Swapped); the userneeds only to turn the selector switch to the desired probe and the rest of theoperation is automatic.Theinstrument and accessories are contained in a very durable water resistantcarrying case for easy storage and portability.

SPECS ERK-525 PLUS

FEATURES

  • LARGE DIGITAL DISPLAY
  • AUTO RANGING UNITS
  • DUAL MODE CAPACITY FOR
  • DOSE RATE & COUNT RATE
  • HP-265, MRSP-1 and GP-1003 PROBES

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 Kit Includes 3 Probes – HP-265 (GM), MRSP-1 (Scintillation), GP-1003 (Energy Compensated GM)
Dose Range See Probe Specifications Below
Energy Range See Probe Specifications Below
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
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)

GP-1003 SPECIFICATIONS

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 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 " (2.5cm) Dia x 4” (10cm) L
Weight 4 oz (0.11 kg)