GSM-115-NaI Survey Meter
GSM-115 Survey Meter with GSP-1 Sodium Iodide Detector, 1 in. x 1 in.

The GSM-115-NAI survey meter is a low cost option for a sodium iodide MicroR survey meter. This rugged, aluminum/stainless steel survey meter unit includes a 1"x1" NaI probe and all digital microprocessor electronics. The display is analog and features a strong, moisture proof panel. This sodium iodide survey meter is ideal for moderate energy gamma survey. Energy response ranges from 50 keV to 2 MeV. For the auto-ranging version of this system, try the GSM-500-NAI.

GSM-115 Survey Meter Specifications

Ranges: Four ranges of 0-.2, 0-2, 0-20, & 0-200 mR/hr or Sv Units 0-500, 0-5000 & 0-50,000, & 0-500,000 cpm
Visual: low battery and detector saturation indicators
Adjustable High Voltage: 300 - 1300 vdc ±1%
Time Response: Adjustable 4 -20 SECONDS - 90% of full scale
Power Supply: QTY 2 Nine volt alkaline batteries
Display: analog, 2.5" rugged, moisture proof panel
Dimensions: 5-½" (14 cm) H X 3" (7.5 cm) W X 7" (18 cm)
Weight: 2-1/4 lbs (1 kg)
Construction: Heavy duty cast aluminum and stainless steel
Environmental: stable from -20 deg C. to 60 deg. C, moisture resistant

GSP-1 NaI Scintillation Probe Specifications

Operating Voltage: 900 volts
Detector Crystal: 1" (2.5 cm) x 1" Sodium Iodide
Window: 35 mg/cm2
Nominal Background: 1,800
Energy Response: 50 keV-2 MeV gamma
Sensitive Area: 1" (2.5 cm) X 1"
Finish: Polyurethane & PVC coated aluminum housing
Dimensions: 1-7/8" (4.75 cm) dia. X 6" (15.2 cm)long
Weight: 8 ounces (.23 kilos)
Environmental: stable from -20º to 60ºC, 5% - 95% RH non-condensing---IPX4