FH 40 G Multi-Purpose Digital Survey Meter
FH 40 G Multi-Purpose Digital Survey Meter
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Thermo Scientific™

FH 40 G Multi-Purpose Digital Survey Meter

Use one convenient, versatile instrument for multiple radiation detection applications including personal radiation protection and beta, x-ray and gamma radiation detection.
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Catalog NumberDescription
4254002FH 40 G Radiameter, calibration factor and display units selectable via PC-program "cal40G". Selectable units: Sv/h, R/h, Gy/h. Calibrated in R/h. Measuring range: 10 µR/h-99 R/h, 36keV-1.3MeV (Not for sale in UK)
425400201FH 40 G Radiameter, calibration factor and display units selectable via PC-program "cal40G". Selectable units: Sv/h, R/h, Gy/h. Calibrated in Sv/h. Measuring range: 0.1 µSv/h-0.99Sv/h, 36keV-1.3MeV (Not for sale in UK).
4254004FH 40 G-L Radiameter, calibration factor and display units selectable via PC-program "cal40G". Selectable units: Sv/h, R/h, Gy/h. Measuring range: up to 10 R/h, Energy range: 36keV-1.3MeV . (Not for sale in UK).
425400401FH 40 G-L Radiameter, calibration factor and display units selectable via PC-program "cal40G". Selectable units: Sv/h, R/h, Gy/h. Calibrated in Sv/h. Measuring range: up to 0.1 Sv/h, Energy range: 36keV-1.3MeV . (Not for sale in UK).
425400450FH 40 G-L Radiameter, calibration factor and display units selectable via PC-program "cal40G". Selectable units: Sv/h, R/h, Gy/h. Calibrated in R/h. Measuring range: up to 10 R/h, Energy range: 36keV-1.3MeV , extra earphone connector (Not for sale in UK).
4254006FH 40 G-10 Radiameter energy compensated for ambient dose equivalent H*(10) according to ICRP60/ICRU39, Energy range: 30 keV-4.4 MeV, Measuring range: up to 1 Sv/h. Export version with selectable calibration factor.
425400650FH 40 G-10 Radiameter energy compensated for ambient dose equivalent H*(10) according to ICRP60/ICRU39, 30 keV-4.4 MeV, up to 1 Sv/h. Export version with selectable calibration factor, extra earphone connector
4254008FH 40 GL-10 Radiameter energy compensated for ambient dose equivalent H*(10) according to ICRP60/ICRU39, Energy range: 30 keV-4.4 MeV, Meas.range: up to 100 mSv/h. Export version with selectable calibration factor.
425400802FH 40 GL-10 Radiameter energy compensated for ambient dose equivalent H*(10) according to ICRP60/ICRU39, Energy range: 30 keV-4.4 MeV, Meas.range: up to 100 mSv/h. Export version with selectable calibration factor. No nanosievert units.
425400850FH 40 GL-10 Radiameter energy compensated for ambient dose equivalent H*(10) according to ICRP60/ICRU39, 30 keV-4.4 MeV, up to 100 mSv/h. Export version with selectable calibration factor, extra earphone connector
425400852FH 40 GL-10 Radiameter energy compensated for ambient dose equivalent H*(10) according to ICRP60/ICRU39, 30keV-4.4MeV, up to 100 mSv/h. Export version with selectable calibration factor, extra earphone connector. No nanosievert units.
4254009FH 40 GL-omega Radiameter special version FH 40 G-L, with connection of earphone (425400910) or external alarm relays
4254014FH 40 G-X Display unit (no internal counter tube) all FH 40 G external detectors can be connected to this device. R/h display when used with calibrated probes.
425401401FH 40 G-X Display unit (no internal counter tube) all FH 40 G external detectors can be connected to this device. Sv/h display when used with calibrated probes.
425400250FH 40 G Radiameter, calibration factor and display units selectable via PC-program "cal40G": Sv/h, R/h, Gy/h. Calibrated in R/h. Measuring range: 10 µR/h-99 R/h, 36keV-1.3MeV, extra earphone connector (Not for sale in UK)
FH40GLDS3Warranty for FH 40 GL
425400451FH 40 G-L Radiameter, calibration factor and display units selectable via PC-program "cal40G". Selectable units: Sv/h, R/h, Gy/h. Calibrated in R/h. Measuring range: up to 0.1 Sv/h, Energy range: 36 keV-1.3 MeV , extra earphone connector (Not for sale in
4254016FH 40 GL-10-omega Radiameter special version FH 40 GL-10, with connection (external probes are not supported) or external alarm relays.
425400251FH 40 G Radiameter, calibration factor and display units selectable via PC-program "cal40G": Sv/h, R/h, Gy/h. Calibrated in Sv/h. Measuring range: 0.1 µSv/h-0.99Sv/h, 36keV-1.3MeV, extra earphone connector (Not for sale in UK)
425401450Display unit FH 40 G-X (no internal counter tube) all FH 40 G external detectors can be connected to this device, extra connector for earphone
Catalog number 4254002
Price (USD)/ Each
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Description:
FH 40 G Radiameter, calibration factor and display units selectable via PC-program "cal40G". Selectable units: Sv/h, R/h, Gy/h. Calibrated in R/h. Measuring range: 10 µR/h-99 R/h, 36keV-1.3MeV (Not for sale in UK)
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.

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

The FH 40 G instrument is available in different versions:

FH 40 G

  • Measured Quantity: Roentgen (R)
  • Measuring Range: 1 μR/h ... 100 R/h
  • Energy range: 36 keV ... 1.3 MeV
  • Dose measuring range: 10 μR - 1000 R

FH 40 G-L

  • Measured Quantity: Roentgen (R)
  • Measuring Range: 1 μR/h ... 10 R/h
  • Energy range: 36 keV ... 1.3 MeV
  • Dose measuring range: 10 μR - 100 R

FH 40 G-10

  • Measured Quantity: Sievert (Sv; Ambient dose equivalent rate H*(10))
  • Measuring Range: 10 nSv/h ... 1 Sv/h
  • Energy range: 30 keV ... 4.4 MeV
  • Dose measuring range: 100 nSv ... 10 Sv

FH 40 G-L10

  • Measured Quantity: Sievert (Sv; Ambient dose equivalent rate H*(10))
  • Measuring Range: 10 nSv/h ... 100 mSv/h
  • Energy range: 30 keV ... 4.4 MeV
  • Dose measuring range: 100 nSv ... 1 Sv

FH 40 G-X

  • No internal detector, operation of external plug and play probe only

General specifications of all FH40G units

  • Dimensions 7.7 x 2.9 x 1.7 in. (195 x 73 x 42mm)
  • Weight[s] 0.9 lb. (410g)
  • Battery type: 2 x AA
  • Neutron dose rate measurement: FHT 762 WENDI-2, FHT 772 H-2 REMBALL
  • Neutron search probes: FHT 752 SH-2 (He-3, 2bar)
Specifications
Sensitivity> 30 keV
Certifications/ComplianceMeets IP 67 requirement for waterproofing; shock-resistence / NRPB approved (UK); ICRU 39 for SI-units
DescriptionFH 40 G Radiameter, calibration factor and display units selectable via PC-program "cal40G". Selectable units: Sv/h, R/h, Gy/h. Calibrated in R/h. Measuring range: 10 µR/h-99 R/h, 36keV-1.3MeV (Not for sale in UK)
Energy RangeFH 40 G: 36 keV to 1.3 MeV; 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
Product TypeDigital Survey Meter
Measurement Range1 µR/h-100 R/h
Height (English)1.7 in.
Measured QuantityFH 40 G, FH 40 G-L, FH 40 GL-omega: Response (Roentgen) - R
Width (Metric)7.4 cm
Weight (Metric)0.41 kg
Radiation TypeDependent on probe used
Depth (Metric)195 mm
Width (English)2.9 in.
Weight (English)0.9 lb.
Depth (English)7.7 in.
Height (Metric)4.2 cm
Dose RangeFH 40 G: 10 µR - 1000 R; FH 40 G-L, FH 40 GL-omega: 10 µR - 100 R; FH 40 G-10: 100 nSv - 10 Sv
Unit SizeEach