44 products found
W. B. Johnson Instruments Products
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Handheld Meters
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Model GSM-500 - Auto-Ranging Survey Meter
This microprocessor-controlled instrument represents the gold standard of survey instruments. The GSM-500 is a digital ciruitry instrument with an analog display that automatically chooses the correct range with no user intervention required. Comes standard with probe saturation and other error ...
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Model DSM-500 - Digital Radiation Survey Meter
This microprocessor-controlled instrument represents the new gold standard of survey instruments. The DSM-500 boasts an oversized digital display and a unique capability for dual probe capability. Comes standard with timed-count capability, probe-saturation and error ...
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Model GSM-501 - Analog Micro-R Survey Meter
The GSM-501 outperforms its competitors with an impressive 1x1 tissue equivalent scintillator, providing a much better dose response than other Micro-R meters. This accuracy combined with a full Auto-Ranging display makes this the most accurate and easy to use Micro-R meter on the ...
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Model DSM-502 - Digital Radiation Survey Meter Internal Detector
The DSM-502 Survey meter is designed as the perfect application for general users of radiation measurement and monitoring. It's mid-range internal detector allows for the perfect combination of accuracy, simplicity and functionality for the reliable and consistent measurement of ...
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Model DSM-503 - Digital Radiation Survey Meter with Internal Detector
The DSM-503 Survey meter is the perfect mix of rugged and dependable for use in a variety of environments. With it's internal detector, this instrument is designed to fit the perfect application for general users of radiation measurement and monitoring. The internal energy compensated gm detector makes this instrument a perfect fit for general users of radiological ...
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Model DSM-504 - Digital Radiation Survey Meter with Internal Detector
An internal GM detector and digital auto-ranging display make the DSM-504 an impressive combination of simplicity and accuracy. Designed for users of radiation devices in industrial process applications needing the accuracy in lower range dose monitoring but the higher range capability of evaluating the extent of emergency ...
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Benchtop Scalers
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Model RML-200 - Frisker/Area Monitor
An excellent ratemeter for labs' area monitoring and frisking stations. This is a digital instrument with analog display. The instrument automatically chooses the correct range without user intervention. Can operate from the 120 vac power line or for up to 240 hours from the internal rechargeable battery. Relay output enables the use of external lights, sirens, ...
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Detectors/Probes
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Model GP-1001 - Gamma Monitoring Detector
The GP Series detectors are excellent detectors for general gamma monitoring. Its small size and rugged design make the GP Series Detectors some of the most durable and reliable detectors ...
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Model GP-1002 - Gamma Monitoring Detector
The GP Series detectors are excellent detectors for general gamma monitoring. Its small size and rugged design make the GP Series Detectors some of the most durable and reliable detectors ...
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Model GP-1003 - Gamma Monitoring Detector
The GP Series detectors are excellent detectors for general gamma monitoring. Its small size and rugged design make the GP Series Detectors some of the most durable and reliable detectors ...
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Model GP-1004 - Gamma Monitoring Detector
The GP Series detectors are excellent detectors for general gamma monitoring. Its small size and rugged design make the GP Series Detectors some of the most durable and reliable detectors ...
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Portal Monitors
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Model AM-801 - Portable Portal Monitor
This Portable Portal monitor assembles simply in under five minutes. It comes with Voice Operational Commands, Full Color Touch Sensitive graphics panel, and Auto Cal for Maximum Sensitivity. The audible and visual alarms meet or exceed FEMA's sensitivity requirements of 1uCi or less Cs-137 ...
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Complete Systems for Measuring Contamination and Dose
Includes Survey Meter, Probe, Cable, Batteries, Operations and Maintenance Manual and Calibration Certificate.
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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 ...
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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, ...
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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 ...
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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 ...
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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 ...
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Complete System for Measuring Gamma Dose
Includes Survey Meter, Probe, Cable, Batteries, Operations and Maintenance Manual and Calibration Certificate.
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GSM-500MR
Micro R Survey Meter 4 Ranges - Microprocessor w/MRSP-1 Gamma Dose Probe Auto Ranging, Auto Linearization Max. 5,000 ...
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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, ...
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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, ...
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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 ...
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Complete Special Measuring Systems
Includes Survey Meter, Probe, Cable, Batteries, Operations and Maintenance Manual and Calibration Certificate.
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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 ...
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TVX-2000
Description - 6 Detector, Auto-Ranging, Auto Selects Detector - w/ highest reading, visual high detector LED. - Large 3.5' Meter, microprocessor controlled Application Measures X-rays from TV, CRT's and X-ray machines. Accepted by FDA for TV & CRT emissions ...
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Complete Emergency Response Systems
Complete systems designed to respond to emergency situations involving the loss of radioactive material. These systems have broad capabilities to detect most common types of alpha, beta & gamma radiation.
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ER-200
The Model ER-200 is the ultimate, portable radiation monitoring system that can measure dose from micro R to 1000 R/hr & most types of radioactive ...
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ER-100
Description The Model ER-100 is a complete, portable radiation monitoring system for measuring moderate levels of gamma dose (10R/hr) and most types of radioactive contamination. Application Designed to measure a moderate range of radioisotope contamination & dose under field ...
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ALPHA-300
Description The ALPHA-300 is a portable, high-sensitivity system for measuring low levels of alpha (uranium, thorium) and other alpha emitting materials in the field. Application Utilizes scaler, sample holder & zero background detector. Measures very low levels of most common alpha emitters in the ...
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Survey Meters & Counter/Scalers
Includes Survey Meter, Cable, Operations and Maintenance Manual and **Calibration Certificate. These items DO NOT include a Probe.
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GSM-525
4 Range Dual-Probe Microprocessor Survey Meter Auto Ranging Integrate & Peak Hold CPM & Dose Probe 1 CPM DT Compensated Probe 2 500, 5,000, 50,000 & 500,000 CPM Probe 1 Dose Ranges 25 Micro R/hr to 1 R/hr Depending on Probe Dose Linearization Dead Time Compensation CPM Auto LO Battery, HV Out of Range Probe Saturation ...
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GSM-505
4 Range Dual-Probe Microprocessor Survey Meter Description - Auto Ranging Integrate & Peak Hold - CPM & Dose Probe 1 CPM DT Compensated Probe 2 - 500, 5,000, 50,000 & 500,000 CPM - Probe 1 Dose Ranges 25 Micro R/hr to 1 R/hr Depending on Probe - Dose Linearization - Dead Time Compensation CPM - Auto LO Battery, HV Out of Range - Probe Saturation LED's Application - Broad Capability Contamination Monitor Using GM ...
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GSM-115
4 Range Microprocessor Survey Meter Description - 4 Range Survey Meter - 500, 5,000, 50,000 & 500,000 CPM - .2, 2, 20 & 200 mR/hr - Low Battery & Saturation, LED's HV & battery meter - Built-In Audible - Response Variable 4-20 Seconds Application - General Purpose 2.5' Meter that is compatible with most Johnson ...
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GSM-110
3 Range Survey Meter Description - 500, 5,000 & 50,000 CPM - .2, 2 & 20 mR/hr - Auto Low Battery & Saturation, LED's HV & battery meter - Built-In Audible - Response Variable 4-20 Seconds Application - General Purpose 2.5' Meter that is compatible with most Johnson ...
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RML-5
3 Range Description - 120 VAC or Battery Powered Rate Meter w/Alarm - 4' Speaker - 2 Watts RMS-50,000 CPM - High Voltage 300-1500 vdc - Adjustable Alarm 5% - 95% Full Scale - Includes Internal Battery & Charger Application - General Purpose Rate Meter that Supports Most Johnson Probes - Excellent Lab or Training Aid - Good Small Area ...
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DIG-6
Digital Counter LCD Display 9,999,999. Description - Crystal Timebase - High Voltage Supply - 7 Preset Counts - + or - Input Supports GM Probes Application - General Purpose Scaler/Counter - Low Level Counter with GM ...
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Probes
Probe with BNC Connector. Only cable optional cost.
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GP-200
END WINDOW GM Description - 1.6 mg/cm2 Window - Good Sensitivity to 14C, 32P, 35S & 137CS Contamination - Good Gamma Dose - .1 MeV to 1.5 MeV-BNC Connector Application - General Purpose Alpha, Beta, Gamma Contamination Monitoring - 200 mR/hr Gamma Dose Monitoring (Based on 137Cs ...
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HP-265
PANCAKE GM Description - 1.6 mg/cm2 Window - Good Sensitivity to 14C, 32P, 35S & 137CS Contamination - Good Gamma Dose - .1 MeV to 1.5 MeV-BNC Connector Application General Purpose Alpha, Beta, Gamma Contamination Monitoring 20 mR/hr Gamma Dose Monitoring (Based on 137Cs ...
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PPA-2T
PANCAKE GM Description - 1.6 mg/cm2 Window - w/Tungsten Back Shield - Best Sensitivity to 14C, 32P, 35S & 137CS Contamination - BNC Connector Application - Lowest Background - Excellent General Purpose Gamma ...
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GLE-1
LOW ENERGY GAMMA SCINTILLATION Description - Best for Iodine 125 & other Low Energy Gamma Contamination - 1' X 2 mm Crystal - w/7 mg/cm2 Window - Magnetically Shielded BNC Connector Application Most Sensitive I-125 Monitor Excellent Low Energy Gamma Monitoring (Cannot be dose ...
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GSP-1
1' x 1' GAMMA SCINTILLATION Description - 35 mg/cm2Window - Magnetically Shielded & Shock Mounted Background - Approx. 200 CPM/µR/hr - Magnetically Shielded - BNC Connector Application General Purpose Gamma Contamination & Spectroscopy ...
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GSP-2
2' x 2' GAMMA SCINTILLATION Description - 35 mg/cm2Window - Magnetically Shielded & Shock Mounted Background - Approximately 200 CPM/µR/hr w/900 VDC - Magnetically Shielded - BNC Connector Application General Purpose Gamma Contamination & Spectroscopy ...
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ASP-2A
2' x ALPHA SCINTILLATION Description - .5 mg/cm2Window - Magnetically Shielded & Shock Mounted - Low Background - BNC Connector Application - High Sensitivity to Alpha Contamination 40+% - Efficiency to Americium ...
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MRSP-1
Description - Excellent tissue equivalent micro R gamma detector. Application - Good energy response from 15 keV to 2 MeV. Dose calibration based on ...
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Accessories & Spare Parts
Commonly Requested Spare Materials and Accessories. i.e. Cables, Detectors, Dosimeter Chargers, Johnson Phosphor-paks
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MSC-1
MANUAL SAMPLE/DETECTOR HOLDER Description - Anodized Aluminum Construction - 2 Adjustable Sample Drawers to Adjust Detectors/Sample Distance Application - Maintains ASP-2, GP-200 Probe to Sample Geometry for Sample ...
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MSC-2
MANUAL SAMPLE/DETECTOR HOLDER Description - Anodized Aluminum Construction - 2 Adjustable Sample Drawers to Adjust Detectors/Sample Distance Application - Maintains HP-265 Pancake Probe to Sample Geometry for Sample ...
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VP-CC
PRECISION PULSE GENERATOR Description - Operates Into 2000 VDC - Input Ranges 100 cpm-500,000 cpm - .005 V P-P -5 V P-P - .01% Accuracy - Pocket Size- 9 VDC Battery Powered Application - Lab or Field Calibration of Survey Meters, Scalers, ...
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RVP-100
VARIABLE FREQUENCY PULSE GENERATOR Description - 4 Ranges - 1000 cpm-1,000,000 cpm - Each Range Variable 5-100% - Operates Into 2000 VDC - 9 VDC Battery Operation Application - Training Aid, - Approximate Calibration for Survey Meters, ...