FEATURES
- EXCELLENT LOW- ENERGY GAMMA DETECTION
- EXCELLENT DETECTION OF I125
- DETECTS HIGH ENERGY BETAS
- AUTO RANGING UNITS
- DUAL MODE CAPACITY FOR
- DOSE RATE & COUNT RATE
- AUDIBLE/VISUAL ALARMS
DSM-500 W/ GLE-1 PROBE
LOW ENERGY GAMMA DETECTION
The DSM-500 combined with the GLE-1 PROBE gives the user the ability to detect low energy gamma and X-rays along with Beta emissions above 600 keV. This combination is very sensitive to I125. The rate meter boasts an oversized digital display and includes a scaler for counts per unit of time, display error indications and audible/visual ALARMS
DSM-500 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 |
| Probe | GLE-1 |
| Energy Range | 10keV – 100keV (Energy 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) |
GLE-1 SPECIFICATIONS
| General Use | Low Energy Gamma Count Rate Measurements |
| Detector Type | 1” x 2m m NaI Scintillator |
| CPM Range | 0-999.9 Kcpm |
| Window | 18 mg/cm2 |
| Energy Response | 10 keV – 100 keV (Energy Dependent) |
| Sensitivity (I125 gamma) | ≈ 675cpm/µR/hr |
| Operating Voltage | 600 – 1100 vdc |
| Background (10 µR/hr) | ≈ 300cpm |
| Compatibility | All Johnson Rate Meters |
| Environmental | -20°F[-28°C] to 140°F[60°C] 5-95% RH |
| Connector | BNC (other types available) |
| Dimensions | 1.8″ (4.25cm) Dia x 6” (15cm) L |
| Weight | 8 oz (0.23 kg) |
