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Survey Ratemeter Model 3 with a uSV/h Scale

Survey Ratemeter Model 3 with a uSV/h Scale
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Survey Ratemeter Model 3 with a uSV/h Scale.


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Survey Ratemeter Model 3 with a uSV/h Scale
The Model 3 Survey Ratemeter and Model 44-2 Gamma Detector Package includes everything needed to do radiation survey checks of X-ray security scanners. The Model 3 Ratemeter has a uSv/ h scale with a range of 0 to 0.5 uSv/h. The package also includes a cable that connects the Model 3 Ratemeter to the Model 44-2 Gamma Detector, a 1.0 µCi Check Source inside a Check Source Holder mounted on the side of the Ratemeter provides for easy calibration of the Ratemeter and helps prevent losing the Check Source.  
Survey Ratemeter and Gamma Detector Package Item 338-000
(1) Model 3 Ratemeter 
(1) Model 44-2 Gamma Detector 
(1) Check Source, Cs-137, 1.0 µCi and Stick on Holder 
338-001 Survey Ratemeter -Model 3 - with a uSV/h Scale 
•           Rugged 
•           4 Decade Analog Ratemeter 
•           Easy Reach to Difficult Places 
•           Greater than 2000 Hour Battery Life 
This package combines Ludlum's popular Model 3 Analog Ratemeter 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 cast aluminum instrument housing with a separate battery compartment and 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 and battery test, an audio on/off switch, a fast/slow response switch, and a count reset button. 
A one meter (39 in.) straight type detector cable with "C" style connector is included in the price of the instrument. 
338-001 Survey Ratemeter -Model 3 - with a uSV/h Scale
Linearity: reading within 10% of true value with detector connected  
High Voltage: adjustable from 400-1500 Vdc 
Threshold: fixed at -35 mV ± 10 mV 
Meter Dial: 0 - 0.5 µSv/h; BAT TEST 
Meter: 2.5" (6.4 cm) arc, 1 mA analog type 

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 

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