FH 40 G and FH 40 G-L series meters (4254002, 425400201, 425400250, 425400251, 4254004, 425400401, 425400450, 425400451) are not for sale in the UK
Thermo Scientific™

FH 40 G Multi-Purpose Digital Survey Meter

Catalog number: 425401401
Thermo Scientific™

FH 40 G Multi-Purpose Digital Survey Meter

Catalog number: 425401401
Serve multiple radiation detection applications with one versatile instrument. The Thermo Scientific™ FH 40 G is a wide range digital Geiger counter suitable for nearly all measurement tasks arising in radiation protection through optional plug and play probes available for neutron measurement, alpha and beta contamination readings and even to detect artificial gamma radiation in variable natural radiation fields.
 
Catalog Number
425401401
Unit Size
Each
Description
Sv/h display used w/calibrated probes
Price (USD)
Full specifications
Radiation TypeDependent on probe used
TypeDigital Survey Meter
DescriptionSv/h display used w/calibrated probes
Dose RangeFH 40 G: 10 µR - 1000 R; FH 40 G-L, FH 40 GL-omega: 10 µR - 100 R; FH 40 G-10: 100nSv - 10 Sv
Energy RangeFH 40 G: 36 keV to 1.3MeV; FH 40 G-L: 36 keV to 1.3 MeV; FH 40 G-10: 30 keV to 4.4 MeV; FH 40 GL-omega: 36 keV to 1.3 MeV
Height (English)1.7 in.
Height (Metric)4.2 cm
Depth (English)7.7 in.
Depth (Metric)195 mm
Measured QuantityFH 40 G, FH 40 G-L, FH 40 GL-omega: Response (Roentgen) - R; FH 40 G-10: Ambient dose equivalent rate (H™(10)) - Sv
Sensitivity>30keV
Weight (English)0.9 lb.
Weight (Metric)0.41 kg
Width (English)2.9 in.
Width (Metric)7.4 cm
Certifications/ComplianceMeets IP 67 requirement for waterproofing; shock-resistence / NRPB approved (UK); ICRU 39 for SI-units
Item DescriptionFH40 G-X display unit; Sv/h display used w/calibrated probes
Unit SizeEach
Catalog Number
Unit Size
Each
Description
Without extra earphone connection, measuring range 1 µR/h-100 R/h
Price (USD)
Full specifications
Radiation TypeDependent on probe used
TypeDigital Survey Meter
DescriptionWithout extra earphone connection, measuring range 1 µR/h-100 R/h
Dose RangeFH 40 G: 10 µR - 1000 R; FH 40 G-L, FH 40 GL-omega: 10 µR - 100 R; FH 40 G-10: 100nSv - 10 Sv
Energy RangeFH 40 G: 36 keV to 1.3MeV; FH 40 G-L: 36 keV to 1.3 MeV; FH 40 G-10: 30 keV to 4.4 MeV; FH 40 GL-omega: 36 keV to 1.3 MeV
Height (English)1.7 in.
Height (Metric)4.2 cm
Depth (English)7.7 in.
Depth (Metric)195 mm
Measured QuantityFH 40 G, FH 40 G-L, FH 40 GL-omega: Response (Roentgen) - R
Measuring Range1 µR/h-100 R/h
Sensitivity>30keV
Weight (English)0.9 lb.
Weight (Metric)0.41 kg
Width (English)2.9 in.
Width (Metric)7.4 cm
Certifications/ComplianceMeets IP 67 requirement for waterproofing; shock-resistence / NRPB approved (UK); ICRU 39 for SI-units
Item DescriptionMeasuring range: 10pR/h-99 R/h, 36 keV to 1.3MeV
Unit SizeEach
Catalog Number
Unit Size
Each
Description
Without earphone connector, measuring range 0.1 to 99 Sv/h
Price (USD)
Full specifications
Radiation TypeDependent on probe used
TypeDigital Survey Meter
DescriptionWithout earphone connector, measuring range 0.1 to 99 Sv/h
Dose RangeFH 40 G: 10 µR - 1000 R; FH 40 G-L, FH 40 GL-omega: 10 µR - 100 R; FH 40 G-10: 100nSv - 10 Sv
Energy RangeFH 40 G: 36 keV to 1.3MeV; FH 40 G-L: 36 keV to 1.3 MeV; FH 40 G-10: 30 keV to 4.4 MeV; FH 40 GL-omega: 36 keV to 1.3 MeV
Height (English)1.7 in.
Height (Metric)4.2 cm
Depth (English)7.7 in.
Depth (Metric)195 mm
Measured QuantityFH 40 G, FH 40 G-L, FH 40 GL-omega: Response (Roentgen) - R; FH 40 G-10: Ambient dose equivalent rate (H*(10)) - Sv
Measuring Range0.1 to 99 Sv/h
Sensitivity>30keV
Weight (English)0.9 lb.
Weight (Metric)0.41 kg
Width (English)2.9 in.
Width (Metric)7.4 cm
Certifications/ComplianceMeets IP 67 requirement for waterproofing; shock-resistence / NRPB approved (UK); ICRU 39 for SI-units
Item DescriptionMeasuring range: 0.1pSv/h-0.99Sv/h, 36 keV to 1.3MeV
Unit SizeEach
Catalog Number
Unit Size
Each
Description
Without earphone connector, measuring range up to 10 R/h
Price (USD)
Full specifications
Radiation TypeDependent on probe used
TypeDigital Survey Meter
DescriptionWithout earphone connector, measuring range up to 10 R/h
Dose RangeFH 40 G: 10 µR - 1000 R; FH 40 G-L, FH 40 GL-omega: 10 µR - 100 R; FH 40 G-10: 100nSv - 10 Sv
Energy RangeFH 40 G: 36 keV to 1.3MeV; FH 40 G-L: 36 keV to 1.3 MeV; FH 40 G-10: 30 keV to 4.4 MeV; FH 40 GL-omega: 36 keV to 1.3 MeV
Height (English)1.7 in.
Height (Metric)4.2 cm
Depth (English)7.7 in.
Depth (Metric)195 mm
Measured QuantityFH 40 G, FH 40 G-L, FH 40 GL-omega: Response (Roentgen) - R; FH 40 G-10: Ambient dose equivalent rate (H™(10)) - Sv
Measuring RangeUp to 10 R/h
Sensitivity>30keV
Weight (English)0.9 lb.
Weight (Metric)0.41 kg
Width (English)2.9 in.
Width (Metric)7.4 cm
Certifications/ComplianceMeets IP 67 requirement for waterproofing; shock-resistence / NRPB approved (UK); ICRU 39 for SI-units
Item DescriptionMeasuring range: up to 10R/h, 36 keV to 1.3MeV
Unit SizeEach
Catalog Number
Unit Size
Each
Description
Without extra earphone connection, measuring range up to 0.1 Sv/h
Price (USD)
Full specifications
Radiation TypeDependent on probe used
TypeDigital Survey Meter
DescriptionWithout extra earphone connection, measuring range up to 0.1 Sv/h
Dose RangeFH 40 G: 10 µR - 1000 R; FH 40 G-L, FH 40 GL-omega: 10 µR - 100 R; FH 40 G-10: 100nSv - 10 Sv
Energy RangeFH 40 G: 36 keV to 1.3MeV; FH 40 G-L: 36 keV to 1.3 MeV; FH 40 G-10: 30 keV to 4.4 MeV; FH 40 GL-omega: 36 keV to 1.3 MeV
Height (English)1.7 in.
Height (Metric)4.2 cm
Depth (English)7.7 in.
Depth (Metric)195 mm
Measured QuantityFH 40 G, FH 40 G-L, FH 40 GL-omega: Response (Roentgen) - R; FH 40 G-10: Ambient dose equivalent rate (H™(10)) - Sv
Measuring RangeUp to 0.1 Sv/h
Sensitivity>30keV
Weight (English)0.9 lb.
Weight (Metric)0.41 kg
Width (English)2.9 in.
Width (Metric)7.4 cm
Certifications/ComplianceMeets IP 67 requirement for waterproofing; shock-resistence / NRPB approved (UK); ICRU 39 for SI-units
Item DescriptionMeasuring range: up to 0.1Sv/h; Calibrated in Sv/h
Unit SizeEach
Catalog Number
Unit Size
Each
Description
Calibrated in R/h, with earphone connector
Price (USD)
Full specifications
Radiation TypeDependent on probe used
TypeDigital Survey Meter
DescriptionCalibrated in R/h, with earphone connector
Dose RangeFH 40 G: 10 µR - 1000 R; FH 40 G-L, FH 40 GL-omega: 10 µR - 100 R; FH 40 G-10: 100nSv - 10 Sv
Energy RangeFH 40 G: 36 keV to 1.3MeV; FH 40 G-L: 36 keV to 1.3 MeV; FH 40 G-10: 30 keV to 4.4 MeV; FH 40 GL-omega: 36 keV to 1.3 MeV
Height (English)1.7 in.
Height (Metric)4.2 cm
Depth (English)7.7 in.
Depth (Metric)195mm
Measured QuantityFH 40 G, FH 40 G-L, FH 40 GL-omega: Response (Roentgen) - R; FH 40 G-10: Ambient dose equivalent rate (H™(10)) - Sv
Measuring RangeUp to 10 R/h
Sensitivity> 30keV
Weight (English)0.9 lb.
Weight (Metric)0.41 kg
Width (English)2.9 in.
Width (Metric)7.4 cm
Certifications/ComplianceMeets IP 67 requirement for waterproofing; shock-resistence / NRPB approved (UK); ICRU 39 for SI-units
Item DescriptionMeasuring range: up to 10 R/h, calibrated in R/h; extra earphone connector
Unit SizeEach
Catalog Number
Unit Size
Each
Description
Without extra earphone connector
Price (USD)
Full specifications
Radiation TypeDependent on probe used
TypeDigital Survey Meter
DescriptionWithout extra earphone connector
Dose RangeFH 40 G: 10 µR - 1000 R; FH 40 G-L, FH 40 GL-omega: 10 µR - 100 R; FH 40 G-10: 100nSv - 10 Sv
Energy RangeFH 40 G: 36 keV to 1.3MeV; FH 40 G-L: 36 keV to 1.3 MeV; FH 40 G-10: 30 keV to 4.4 MeV; FH 40 GL-omega: 36 keV to 1.3 MeV
Height (English)1.7 in.
Height (Metric)4.2 cm
Depth (English)7.7 in.
Depth (Metric)195 mm
Measured QuantityFH 40 G, FH 40 G-L, FH 40 GL-omega: Response (Roentgen) - R; FH 40 G-10: Ambient dose equivalent rate (H™(10)) - Sv
Measuring RangeUp to 1 Sv/h
Sensitivity>30keV
Weight (English)0.9 lb.
Weight (Metric)0.41 kg
Width (English)2.9 in.
Width (Metric)7.4 cm
Certifications/ComplianceMeets IP 67 requirement for waterproofing; shock-resistence / NRPB approved (UK); ICRU 39 for SI-units
Item DescriptionMeasuring range: up to 1Sv/h; 30 keV to 4.4MeV
Unit SizeEach
Catalog Number
Unit Size
Each
Description
Calibrated in Sv/h, with extra earphone connector
Price (USD)
Full specifications
Radiation TypeDependent on probe used
TypeDigital Survey Meter
DescriptionCalibrated in Sv/h, with extra earphone connector
Dose RangeFH 40 G: 10 µR - 1000 R; FH 40 G-L, FH 40 GL-omega: 10 µR - 100 R; FH 40 G-10: 100nSv - 10 Sv
Energy RangeFH 40 G: 36 keV to 1.3MeV; FH 40 G-L: 36 keV to 1.3 MeV; FH 40 G-10: 30 keV to 4.4 MeV; FH 40 GL-omega: 36 keV to 1.3 MeV
Height (English)1.7 in.
Height (Metric)4.2 cm
Depth (English)7.7 in.
Depth (Metric)195 mm
Measured QuantityFH 40 G, FH 40 G-L, FH 40 GL-omega: Response (Roentgen) - R; FH 40 G-10: Ambient dose equivalent rate (H™(10)) - Sv
Measuring RangeUp to 1 Sv/h
Sensitivity>30keV
Weight (English)0.9 lb.
Weight (Metric)0.41 kg
Width (English)2.9 in.
Width (Metric)7.4 cm
Certifications/ComplianceMeets IP 67 requirement for waterproofing; shock-resistence / NRPB approved (UK); ICRU 39 for SI-units
Item DescriptionMeasuring range: Up to 1Sv/h; 30 keV to 4.4MeV; Calibrated in Sv/h
Unit SizeEach
Catalog Number
Unit Size
Each
Description
Export version with selectable calibration factor
Price (USD)
Full specifications
Radiation TypeDependent on probe used
TypeDigital Survey Meter
DescriptionExport version with selectable calibration factor
Dose RangeFH 40 G: 10 µR - 1000 R; FH 40 G-L, FH 40 GL-omega: 10 µR - 100 R; FH 40 G-10: 100nSv - 10 Sv
Energy RangeFH 40 G: 36 keV to 1.3MeV; FH 40 G-L: 36 keV to 1.3 MeV; FH 40 G-10: 30 keV to 4.4 MeV; FH 40 GL-omega: 36 keV to 1.3 MeV
Height (English)1.7 in.
Height (Metric)4.2 cm
Depth (English)7.7 in.
Depth (Metric)195 mm
Measured QuantityFH 40 G, FH 40 G-L, FH 40 GL-omega: Response (Roentgen) - R; FH 40 G-10: Ambient dose equivalent rate (H™(10)) - Sv
Measuring RangeUp to 100mSv/h
Sensitivity>30keV
Weight (English)0.9 lb.
Weight (Metric)0.41 kg
Width (English)2.9 in.
Width (Metric)7.4 cm
Certifications/ComplianceMeets IP 67 requirement for waterproofing; shock-resistence / NRPB approved (UK); ICRU 39 for SI-units
Unit SizeEach
Catalog Number
Unit Size
Each
Description
No nanosievert units
Price (USD)
Full specifications
Radiation TypeDependent on probe used
TypeDigital Survey Meter
DescriptionNo nanosievert units
Dose RangeFH 40 G: 10 µR - 1000 R; FH 40 G-L, FH 40 GL-omega: 10 µR - 100 R; FH 40 G-10: 100nSv - 10 Sv
Energy RangeFH 40 G: 36 keV to 1.3MeV; FH 40 G-L: 36 keV to 1.3 MeV; FH 40 G-10: 30 keV to 4.4 MeV; FH 40 GL-omega: 36 keV to 1.3 MeV
Height (English)1.7 in.
Height (Metric)4.2 cm
Depth (English)7.7 in.
Depth (Metric)195 mm
Measured QuantityFH 40 G, FH 40 G-L, FH 40 GL-omega: Response (Roentgen) - R; FH 40 G-10: Ambient dose equivalent rate (H™(10)) - Sv
Measuring RangeUp to 100mSv/h
Sensitivity>30keV
Weight (English)0.9 lb.
Weight (Metric)0.41 kg
Width (English)2.9 in.
Width (Metric)7.4 cm
Certifications/ComplianceMeets IP 67 requirement for waterproofing; shock-resistence / NRPB approved (UK); ICRU 39 for SI-units
Unit SizeEach
Showing 10 of 20Show more
Catalog NumberSpecificationsUnit SizeDescriptionPrice (USD)
425401401Full specifications
EachSv/h display used w/calibrated probesRequest A Quote
Radiation TypeDependent on probe used
TypeDigital Survey Meter
DescriptionSv/h display used w/calibrated probes
Dose RangeFH 40 G: 10 µR - 1000 R; FH 40 G-L, FH 40 GL-omega: 10 µR - 100 R; FH 40 G-10: 100nSv - 10 Sv
Energy RangeFH 40 G: 36 keV to 1.3MeV; FH 40 G-L: 36 keV to 1.3 MeV; FH 40 G-10: 30 keV to 4.4 MeV; FH 40 GL-omega: 36 keV to 1.3 MeV
Height (English)1.7 in.
Height (Metric)4.2 cm
Depth (English)7.7 in.
Depth (Metric)195 mm
Measured QuantityFH 40 G, FH 40 G-L, FH 40 GL-omega: Response (Roentgen) - R; FH 40 G-10: Ambient dose equivalent rate (H™(10)) - Sv
Sensitivity>30keV
Weight (English)0.9 lb.
Weight (Metric)0.41 kg
Width (English)2.9 in.
Width (Metric)7.4 cm
Certifications/ComplianceMeets IP 67 requirement for waterproofing; shock-resistence / NRPB approved (UK); ICRU 39 for SI-units
Item DescriptionFH40 G-X display unit; Sv/h display used w/calibrated probes
Unit SizeEach
4254002Full specifications
EachWithout extra earphone connection, measuring range 1 µR/h-100 R/hRequest A Quote
Radiation TypeDependent on probe used
TypeDigital Survey Meter
DescriptionWithout extra earphone connection, measuring range 1 µR/h-100 R/h
Dose RangeFH 40 G: 10 µR - 1000 R; FH 40 G-L, FH 40 GL-omega: 10 µR - 100 R; FH 40 G-10: 100nSv - 10 Sv
Energy RangeFH 40 G: 36 keV to 1.3MeV; FH 40 G-L: 36 keV to 1.3 MeV; FH 40 G-10: 30 keV to 4.4 MeV; FH 40 GL-omega: 36 keV to 1.3 MeV
Height (English)1.7 in.
Height (Metric)4.2 cm
Depth (English)7.7 in.
Depth (Metric)195 mm
Measured QuantityFH 40 G, FH 40 G-L, FH 40 GL-omega: Response (Roentgen) - R
Measuring Range1 µR/h-100 R/h
Sensitivity>30keV
Weight (English)0.9 lb.
Weight (Metric)0.41 kg
Width (English)2.9 in.
Width (Metric)7.4 cm
Certifications/ComplianceMeets IP 67 requirement for waterproofing; shock-resistence / NRPB approved (UK); ICRU 39 for SI-units
Item DescriptionMeasuring range: 10pR/h-99 R/h, 36 keV to 1.3MeV
Unit SizeEach
425400201Full specifications
EachWithout earphone connector, measuring range 0.1 to 99 Sv/hRequest A Quote
Radiation TypeDependent on probe used
TypeDigital Survey Meter
DescriptionWithout earphone connector, measuring range 0.1 to 99 Sv/h
Dose RangeFH 40 G: 10 µR - 1000 R; FH 40 G-L, FH 40 GL-omega: 10 µR - 100 R; FH 40 G-10: 100nSv - 10 Sv
Energy RangeFH 40 G: 36 keV to 1.3MeV; FH 40 G-L: 36 keV to 1.3 MeV; FH 40 G-10: 30 keV to 4.4 MeV; FH 40 GL-omega: 36 keV to 1.3 MeV
Height (English)1.7 in.
Height (Metric)4.2 cm
Depth (English)7.7 in.
Depth (Metric)195 mm
Measured QuantityFH 40 G, FH 40 G-L, FH 40 GL-omega: Response (Roentgen) - R; FH 40 G-10: Ambient dose equivalent rate (H*(10)) - Sv
Measuring Range0.1 to 99 Sv/h
Sensitivity>30keV
Weight (English)0.9 lb.
Weight (Metric)0.41 kg
Width (English)2.9 in.
Width (Metric)7.4 cm
Certifications/ComplianceMeets IP 67 requirement for waterproofing; shock-resistence / NRPB approved (UK); ICRU 39 for SI-units
Item DescriptionMeasuring range: 0.1pSv/h-0.99Sv/h, 36 keV to 1.3MeV
Unit SizeEach
4254004Full specifications
EachWithout earphone connector, measuring range up to 10 R/hRequest A Quote
Radiation TypeDependent on probe used
TypeDigital Survey Meter
DescriptionWithout earphone connector, measuring range up to 10 R/h
Dose RangeFH 40 G: 10 µR - 1000 R; FH 40 G-L, FH 40 GL-omega: 10 µR - 100 R; FH 40 G-10: 100nSv - 10 Sv
Energy RangeFH 40 G: 36 keV to 1.3MeV; FH 40 G-L: 36 keV to 1.3 MeV; FH 40 G-10: 30 keV to 4.4 MeV; FH 40 GL-omega: 36 keV to 1.3 MeV
Height (English)1.7 in.
Height (Metric)4.2 cm
Depth (English)7.7 in.
Depth (Metric)195 mm
Measured QuantityFH 40 G, FH 40 G-L, FH 40 GL-omega: Response (Roentgen) - R; FH 40 G-10: Ambient dose equivalent rate (H™(10)) - Sv
Measuring RangeUp to 10 R/h
Sensitivity>30keV
Weight (English)0.9 lb.
Weight (Metric)0.41 kg
Width (English)2.9 in.
Width (Metric)7.4 cm
Certifications/ComplianceMeets IP 67 requirement for waterproofing; shock-resistence / NRPB approved (UK); ICRU 39 for SI-units
Item DescriptionMeasuring range: up to 10R/h, 36 keV to 1.3MeV
Unit SizeEach
425400401Full specifications
EachWithout extra earphone connection, measuring range up to 0.1 Sv/hRequest A Quote
Radiation TypeDependent on probe used
TypeDigital Survey Meter
DescriptionWithout extra earphone connection, measuring range up to 0.1 Sv/h
Dose RangeFH 40 G: 10 µR - 1000 R; FH 40 G-L, FH 40 GL-omega: 10 µR - 100 R; FH 40 G-10: 100nSv - 10 Sv
Energy RangeFH 40 G: 36 keV to 1.3MeV; FH 40 G-L: 36 keV to 1.3 MeV; FH 40 G-10: 30 keV to 4.4 MeV; FH 40 GL-omega: 36 keV to 1.3 MeV
Height (English)1.7 in.
Height (Metric)4.2 cm
Depth (English)7.7 in.
Depth (Metric)195 mm
Measured QuantityFH 40 G, FH 40 G-L, FH 40 GL-omega: Response (Roentgen) - R; FH 40 G-10: Ambient dose equivalent rate (H™(10)) - Sv
Measuring RangeUp to 0.1 Sv/h
Sensitivity>30keV
Weight (English)0.9 lb.
Weight (Metric)0.41 kg
Width (English)2.9 in.
Width (Metric)7.4 cm
Certifications/ComplianceMeets IP 67 requirement for waterproofing; shock-resistence / NRPB approved (UK); ICRU 39 for SI-units
Item DescriptionMeasuring range: up to 0.1Sv/h; Calibrated in Sv/h
Unit SizeEach
425400450Full specifications
EachCalibrated in R/h, with earphone connectorRequest A Quote
Radiation TypeDependent on probe used
TypeDigital Survey Meter
DescriptionCalibrated in R/h, with earphone connector
Dose RangeFH 40 G: 10 µR - 1000 R; FH 40 G-L, FH 40 GL-omega: 10 µR - 100 R; FH 40 G-10: 100nSv - 10 Sv
Energy RangeFH 40 G: 36 keV to 1.3MeV; FH 40 G-L: 36 keV to 1.3 MeV; FH 40 G-10: 30 keV to 4.4 MeV; FH 40 GL-omega: 36 keV to 1.3 MeV
Height (English)1.7 in.
Height (Metric)4.2 cm
Depth (English)7.7 in.
Depth (Metric)195mm
Measured QuantityFH 40 G, FH 40 G-L, FH 40 GL-omega: Response (Roentgen) - R; FH 40 G-10: Ambient dose equivalent rate (H™(10)) - Sv
Measuring RangeUp to 10 R/h
Sensitivity> 30keV
Weight (English)0.9 lb.
Weight (Metric)0.41 kg
Width (English)2.9 in.
Width (Metric)7.4 cm
Certifications/ComplianceMeets IP 67 requirement for waterproofing; shock-resistence / NRPB approved (UK); ICRU 39 for SI-units
Item DescriptionMeasuring range: up to 10 R/h, calibrated in R/h; extra earphone connector
Unit SizeEach
4254006Full specifications
EachWithout extra earphone connectorRequest A Quote
Radiation TypeDependent on probe used
TypeDigital Survey Meter
DescriptionWithout extra earphone connector
Dose RangeFH 40 G: 10 µR - 1000 R; FH 40 G-L, FH 40 GL-omega: 10 µR - 100 R; FH 40 G-10: 100nSv - 10 Sv
Energy RangeFH 40 G: 36 keV to 1.3MeV; FH 40 G-L: 36 keV to 1.3 MeV; FH 40 G-10: 30 keV to 4.4 MeV; FH 40 GL-omega: 36 keV to 1.3 MeV
Height (English)1.7 in.
Height (Metric)4.2 cm
Depth (English)7.7 in.
Depth (Metric)195 mm
Measured QuantityFH 40 G, FH 40 G-L, FH 40 GL-omega: Response (Roentgen) - R; FH 40 G-10: Ambient dose equivalent rate (H™(10)) - Sv
Measuring RangeUp to 1 Sv/h
Sensitivity>30keV
Weight (English)0.9 lb.
Weight (Metric)0.41 kg
Width (English)2.9 in.
Width (Metric)7.4 cm
Certifications/ComplianceMeets IP 67 requirement for waterproofing; shock-resistence / NRPB approved (UK); ICRU 39 for SI-units
Item DescriptionMeasuring range: up to 1Sv/h; 30 keV to 4.4MeV
Unit SizeEach
425400650Full specifications
EachCalibrated in Sv/h, with extra earphone connectorRequest A Quote
Radiation TypeDependent on probe used
TypeDigital Survey Meter
DescriptionCalibrated in Sv/h, with extra earphone connector
Dose RangeFH 40 G: 10 µR - 1000 R; FH 40 G-L, FH 40 GL-omega: 10 µR - 100 R; FH 40 G-10: 100nSv - 10 Sv
Energy RangeFH 40 G: 36 keV to 1.3MeV; FH 40 G-L: 36 keV to 1.3 MeV; FH 40 G-10: 30 keV to 4.4 MeV; FH 40 GL-omega: 36 keV to 1.3 MeV
Height (English)1.7 in.
Height (Metric)4.2 cm
Depth (English)7.7 in.
Depth (Metric)195 mm
Measured QuantityFH 40 G, FH 40 G-L, FH 40 GL-omega: Response (Roentgen) - R; FH 40 G-10: Ambient dose equivalent rate (H™(10)) - Sv
Measuring RangeUp to 1 Sv/h
Sensitivity>30keV
Weight (English)0.9 lb.
Weight (Metric)0.41 kg
Width (English)2.9 in.
Width (Metric)7.4 cm
Certifications/ComplianceMeets IP 67 requirement for waterproofing; shock-resistence / NRPB approved (UK); ICRU 39 for SI-units
Item DescriptionMeasuring range: Up to 1Sv/h; 30 keV to 4.4MeV; Calibrated in Sv/h
Unit SizeEach
4254008Full specifications
EachExport version with selectable calibration factorRequest A Quote
Radiation TypeDependent on probe used
TypeDigital Survey Meter
DescriptionExport version with selectable calibration factor
Dose RangeFH 40 G: 10 µR - 1000 R; FH 40 G-L, FH 40 GL-omega: 10 µR - 100 R; FH 40 G-10: 100nSv - 10 Sv
Energy RangeFH 40 G: 36 keV to 1.3MeV; FH 40 G-L: 36 keV to 1.3 MeV; FH 40 G-10: 30 keV to 4.4 MeV; FH 40 GL-omega: 36 keV to 1.3 MeV
Height (English)1.7 in.
Height (Metric)4.2 cm
Depth (English)7.7 in.
Depth (Metric)195 mm
Measured QuantityFH 40 G, FH 40 G-L, FH 40 GL-omega: Response (Roentgen) - R; FH 40 G-10: Ambient dose equivalent rate (H™(10)) - Sv
Measuring RangeUp to 100mSv/h
Sensitivity>30keV
Weight (English)0.9 lb.
Weight (Metric)0.41 kg
Width (English)2.9 in.
Width (Metric)7.4 cm
Certifications/ComplianceMeets IP 67 requirement for waterproofing; shock-resistence / NRPB approved (UK); ICRU 39 for SI-units
Unit SizeEach
425400802Full specifications
EachNo nanosievert unitsRequest A Quote
Radiation TypeDependent on probe used
TypeDigital Survey Meter
DescriptionNo nanosievert units
Dose RangeFH 40 G: 10 µR - 1000 R; FH 40 G-L, FH 40 GL-omega: 10 µR - 100 R; FH 40 G-10: 100nSv - 10 Sv
Energy RangeFH 40 G: 36 keV to 1.3MeV; FH 40 G-L: 36 keV to 1.3 MeV; FH 40 G-10: 30 keV to 4.4 MeV; FH 40 GL-omega: 36 keV to 1.3 MeV
Height (English)1.7 in.
Height (Metric)4.2 cm
Depth (English)7.7 in.
Depth (Metric)195 mm
Measured QuantityFH 40 G, FH 40 G-L, FH 40 GL-omega: Response (Roentgen) - R; FH 40 G-10: Ambient dose equivalent rate (H™(10)) - Sv
Measuring RangeUp to 100mSv/h
Sensitivity>30keV
Weight (English)0.9 lb.
Weight (Metric)0.41 kg
Width (English)2.9 in.
Width (Metric)7.4 cm
Certifications/ComplianceMeets IP 67 requirement for waterproofing; shock-resistence / NRPB approved (UK); ICRU 39 for SI-units
Unit SizeEach
Showing 10 of 20Show more

The FH 40 G is a versatile multipurpose Geiger counter and area monitor that can be used with external detectors for portable and remote area monitoring applications.

  • Rugged, waterproof and reliable with very simple operation.
  • Gamma meter with internal proportional counter tube.
  • Integrated gamma dose rate measurements.
  • Interface for one optional, external plug and play probe.
  • Alarm thresholds for the internal detector and external probes of the FH 40 G are monitored simultaneously.
  • Upon connection of an external plug and play probe, the probe parameters are automatically read into the FH 40 G and the correct parameters are set.
  • High voltage generation inside the plug and play probe makes the system calibration independent of cable length.
  • Separate alarms can be set by the user for both the internal and external detectors.
  • Operational internal proportional detector and connected external detector.
  • Serial infrared interface.
  • Type tested by PTB (German version).
  • Type tested for use by German fire brigades.
  • Simultaneous operation of internal and external detectors, both dose rate and remote dose rate readings.
  • Configuration and data read out via PC.
  • Waterproof (IP 67) and shock resistant.
  • ADF mode (Advanced Digital Filter).
  • Clear, backlit LCD display.
  • Datalogging capability.
  • Internal diagnostics ensure proper functioning of the detector(s) and the electronics.
  • Designed to record up to 256 data points containing measurement number, date, time and dose rate at the internal detector and external detector, status, and optional barcode information.
  • Wide range of plug and play external probes for monitoring and detection.
  • All FH 40 G versions and external probes containing the “-10” suffix are designed to meet the energy response behavior of the new SI-units ambient dose equivalent and ambient dose equivalent rate according to ICRU 39.

Short summary of available plug and play probes:

  • Gamma dose rate measurement: FHT 192 (ionization chamber), FHZ 632 (proportional counter), FHZ 612 (wide range), FHZ 302/312 (under water nuclear power).
  • Gamma search probes: FHZ 502, 503, 512 (NaJ/BGO).
  • Contamination: FHZ 742 (Scintillator), FHZ 732 (Pancake/proportional counter), FHZ 382 (Scintiallator + Alpha/Beta discriminator via LED indication if alphas are present).
  • Aritificial radiaiton discrimination: NBR probe FHZ 672.
  • Preamplifiers for various classic probes.
  • Wide range of accessories like cables, telepoles, application specific kits, etc.
FH G and FH 40 G-L series meters (4254002, 425400201, 425400250, 425400251, 4254004, 425400401, 425400450, 425400451) are not for sale in the UK

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Frequently asked questions (FAQs)

Citations & References