Radiation Alert Replacement Probes
Have questions about buying this product?
We offer a variety replacement probes for our Radiation Alert® instruments.
NOMO Group can help you find just the right probe for your application. Below are the specifications for the most common detectors that we offer.
Custom Probe Options Available. Tell us about your application and we can recommend the best probe options for your needs.
Contact For Pricing and Availability
Ranger EXP Probe
DetectorExternal Halogen-quenched, uncompensated Geiger Muller tube with a thin mica window, 1.4-2.0 mg/cm2 areal density. Effective diameter of window is 45 mm (1.75 in.). Radiation symbol on probe head label marks the center of the detector Which Detector Works With My Model of EXP?All Ranger EXP Models are RAP-RS2 Probes with BNC. For Previous Model SEI’s Radiation Alert Inspector EXPs:The RAP-RS1 fits the EXP Models (SN#s 27299 and lower) No longer available. |  |
Probe Construction
Anodized aluminum housing
Size
RAP-RS1 Approx. 8.75 X 1 in. (222 X 25 mm) Dia.: 2.75 in. (70 mm)
RAP-RS2 Approx. 10.7 X 1 in. (272 X 25 mm) Dia : 2.75 in. (70 mm)
Connector
RAP-RS1: Amphenol-Tucal
RAP-RS2: BNC
Handle
Black foam grip
Weight
RAP-RS1: Approx. 11.5 oz. (328 g) w/o cable
RAP-RS2: Approx. 9.6 oz. (272 g) w/o cable
Gamma Scintillation Probes for Area Monitor and GammaView
1×1 Nal Scintillation (Typically 1.0″ dia x 1.0″ thick (25.4 x 25.4mm)
| Indicated Use | Low-level, wide-energy gamma detection | |
|---|---|---|
| Detector Type | NaI(Tl) scintillator, 2.5 cm (1 in) dia. x 2.5 cm (1 in) thick | |
| Efficiency (4π) | 125I | 7% |
| 57Co | 10% | |
| 137Cs | 3% | |
| 60Co | 3% | |
| Energy Range | 20 keV to 1.5 MeV | |
| Sensitivity | >18,000 CPM/mR/hr (137 Cs) | |
| Photomultiplier Tube | 2.86 cm (1.123 in) diameter, magnetically shielded | |
| Operating Voltage | 500 to 1200 V | |
| Temperature Range | -15 to 50 °C (5 to 122 °F) May be certified for -40 to 65 °C (-40 to 150 °F) | |
| Connector | Series “C” | |
| Construction | Aluminum with beige powder coat | |
| Size (D x L) | 5.1 x 18.5 cm (2 x 7.3 in) | |
| Weight | 0.5 kg (1 lb) | |
2×2 Nal Scintillation (Typically 2.0″ dia x 2.0″ thick (50.8 x 50.8mm)
| Indicated Use | Low-level, wide-energy gamma detection | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Detector Type | NaI(Tl) scintillator, 2.5 cm (1 in) dia. x 2.5 cm (1 in) thick | |||||||||
| Efficiency (4π) |
| |||||||||
| Energy Range | 30 keV to 3.0 MeV | |||||||||
| Sensitivity | >90,000 CPM/mR/hr (137 Cs) | |||||||||
| Photomultiplier Tube | 2.86 cm (1.123 in) diameter, magnetically shielded | |||||||||
| Operating Voltage | 500 to 1200 V | |||||||||
| Temperature Range | -15 to 50 °C (5 to 122 °F) May be certified for -40 to 65 °C (-40 to 150 °F) | |||||||||
| Connector | Series “C” | |||||||||
| Construction | Aluminum with beige powder coat | |||||||||
| Size (D x L) | 6.6 x 27.9 cm (2.6 x 11 in.) | |||||||||
| Weight | 1.04 kg (2.3 lb) | |||||||||
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