The Survey Ratemeter and Gamma Detector Package includes everything needed to do radiation survey checks of X-ray security scanners. The Survey Ratemeter has a uSv/ h scale with a range of 0 to 0.5 uSv/h. The package also includes a coiled cable that connects the Survey Ratemeter to the Gamma Detector and can stretch up to 48" (122 cm), a 1.0 µCi Check Source inside a Check Source Holder mounted on the side of Survey Ratemeter provides for easy calibration of the Survey Ratemeter and helps prevent losing the Check Source.

Survey Ratemeter and Gamma Detector Package Item 338-000 Includes:
(1) Survey Ratemeter
(1) Gamma Detector
(1) "C" Series Coiled Cable
(1) Check Source
(1) Holder for Check Source

338-001 Survey Ratemeter -Model 3 - with a uSV/h Scale

• Rugged 4 Decade Analog Ratemeter
• Sensitive 1" x 1" (2.54 x 2.54 cm) NaI(Tl) Detector
• Easy to Use
• Easy Reach to Difficult Places
• Greater than 2000 Hour Battery Life

This instrument combines Ludlum's popular Model 3 Analog Survey Meter with a 1" x 1" (2.54 x 2.54 cm) NaI(Tl) gamma scintillator detector, Model 44-2, to create a very sensitive micro-R-meter. The advantage this instrument has over those with the detector housed inside the instrument enclosure is its ability to manipulate the detector into tight or difficult places. It has the additional benefit of keeping the meter conveniently in full view while performing an investigation. The design is very robust with a loud audio signal to facilitate noisy areas. The aluminum cast instrument housing with its separate battery compartment and accompanying metal handle offer an industrial robustness and quality that promote long lasting protection and instrument life. The front panel controls include a rotary switch for selecting the four-decade range, instrument shut-off, battery test, an audio on/off switch, a fast/slow response switch, and a count reset button.

Specifications

338-001 Survey Ratemeter -Model 3 - with a uSV/h Scale
Meter Dial: 0 - 0.5 µSv/h; 0-500 kcpm, BAT TEST
Meter: 2.5" (6.4 cm) arc, 1 mA analog type
Controls:
  Rotary Selector: Switches between instrument off, battery check,
  ranges: x0.1, x1, x10, x100
  Response Switch: Toggles between FAST (4 seconds) or SLOW
  (22 seconds) from 10% to 90% of final reading
  Reset Pushbutton: To zero meter
  Audio Switch: For audio on/off, built-in unimorph speaker, greater than
  60 dB at 2' (0.6 m)
  Calibration Controls: Accessible from front of instrument (protective
  cover provided)
Construction: Cast and drawn aluminum with beige powder coat
Connector: Series “C”
Temperature Range: -4 to 122°F (-20 to 50°C), may be certified for operation from -40 to 150°F (-40 to 65°C)
Power: Two each “D” cell batteries (housed in externally accessible sealed compartment)
Battery Life: Typically greater than 2000 hours with alkaline batteries (battery condition can be checked on meter)
Size: 6.5" H x 3.5" W x 8.5" L (16.5 x 8.9 x 21.6 cm), including handle
Weight: 3.5 lb (1.6 kg), including batteries

Item 338-002 Gamma Detector - Model 44-2
Detector Type: Scintillator, 1" Dia x 1" L (2.54 x 2.54 cm) thick Nal
Sensitivity: Typically 175 cpm/µR/hr (137Cs gamma)
Background: 1900 cpm
Recommended Energy Range: 50 KeV-1.5 MeV
Energy Response: Energy dependent
Photomultiplier Tube: 1.125" (2.86 cm) diameter
Operating Voltage: 500-1200 volts
Connector: Series “C”
Temperature Range: 5 to 122°F (-15 to 50°C), may be certified for -40 to 150°F (-40 to 65°C)
Size: 2" Dia x 7.3" L (5.1 x 18.5 cm)
Weight: 1 lb (0.5 kg)

Item 338-003 Series C Coiled Cable
Connector Type: “C”
Construction: RG58 Shielded Low Noise Coiled Coaxial cable with strain relief
Length: 18" coiled to 48" stretched