WB Johnson Instruments
46 products found

WB Johnson Instruments products

Complete Systems for Measuring Contamination and Dose

GSM-110/115 Survey Meter & GP-200 Probe

3 & 4 Range Survey Meter w/ end window GM probe Max. 50,000 CPM & 20 mR/hr Max. 500,000 CPM & 200 mR/hr (Includes survey meter, batteries, cable & probe. Johnson systems utilize BNC type connectors.)

GSM-110/115 HP

Description
- 3 & 4 Range Survey Meter
- w/ pancake GM probe
- Max. 50,000 CPM & 20 mR/hr
- *Max. 500,000 CPM & 200 mR/hr
Application
- Most Sensitive to Alpha, Beta & Gamma Contamination
- Gamma Dose to 20 mR/hr
- 14C, 32P, 35S, 137Cs

GSM-110/115 GL

Description
- 3 & 4 Range Survey Meter
- w/ low entergy gamma scintillation probe
- Max. 50,000 CPM
- *Max. 500,000 CPM
Application
- Most sensitive to iodine 125
- 38% + 2 pi efficiency 125I also detects 131I, 137Cs (Cannot be dose calibrated.)

GSM-500GP

Description
- 4 Range Survey Meter
- Auto ranging
- w/HP-256 pancake GM probe
- Max. 500,000 CPM & 20 mR/hr
Application
- Most Sensitive to Alpha, Beta & Gamma Contamination
- Gamma Dose to 20 mR/hr
- 14C, 32P, 35S, 137Cs (Based on 137Cs calibration)

GSM-500GL

Description
- 4 Range Survey Meter
- Auto ranging
- w/GLE-1 low energy gamma scintillation probe
- Max. 500,000 CPM
Application
- Most sensitive to iodine 125
- 38% + 2 pi efficiency 125I also detects 131I, 137Cs (Cannot be dose calibrated.)

Complete System for Measuring Gamma Dose

GSM-500MR

Micro R Survey Meter 4 Ranges - Microprocessor w/MRSP-1 Gamma Dose Probe Auto Ranging, Auto Linearization Max. 5,000 mR/hr

GSM-110/115DP

Description
- 4 Range Survey Meter
- w/ GP-1001 or 1002 Gamma Dose Probe
- Auto Ranging, Auto Linearization
- 1001-Max. 200 mR/hr
- 1002-Max. 2,000 mR/hr
Application
- Energy Compensated Gamma Dose
- 40 keV-1.5 MeV ±15%
- Cs137 Ca, 60Co, 221Ra

GSM-500DP

Description
- 4 Range Survey Meter
- w/ GP-1001 or 1002 Gamma Dose Probe
- Auto Ranging, Auto Linearization
- 1001-Max. 200 mR/hr
- 1002-Max. 2,000 mR/hr
Application
- Energy Compensated Gamma Dose
- 40 keV-1.5 MeV ±15%
- Cs137 Ca, 60Co, 221Ra

2000W

Description
- 7 Range Telescoping Survey Meter
- 1mR/hr - 1000R/hr
- Meter Back Light Telescopes to 142`
- Audible w/switch
Application
- Energy Compensated Gamma Dose
- 65 keV-1.5 MeV ±15% to 1000 R/hr

Complete Special Measuring Systems

GSM-505 DP

Dual External Probe Microprocessor Survey Meter w/ HP-265 Pancake Probe & GLE-1 Low Energy Scintillator for 125I Auto Ranges to 500,000 CPM & 20 mR/hr (Based on 137Cs calibration) Auto Dead Time Comp Auto Dose Linearization