FH 40 G Multi-Purpose Digital Survey Meter

Description

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.

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)