Ludlum Model 19 MicroR Meter

Part Number 48-1615

Ludlum Measurements Model 19 MicroR MeterThe Ludlum Model 19 MicroR survey meter is used for low level micro R gamma survey. It is a compact, rugged, internal scintillation detector survey meter. The Model 19 Micro R survey meter includes an internal 1"x1" NaI detector, five ranges and splash proof shields for outdoor use. No external detector is required.  Sensitivity, based on Cs-137 gamma,  is typically 175 cpm/microR/hr. This meter over-responds to scatter and low energy gamma which makes it more sensitive than any survey meter available. Range selections include 0 - 25, 0 - 50, 0 - 250, 0 - 500, 0 - 5000 micro R/hr.

Check our newer digital MicroR Meter , featuring multiple units, scaler function, and tissue equivalency.

Ludlum Model 19 Specifications:

Working Environment: Splash proof shields for outdoor use
Indicated use: Low level (microR) gamma survey
Detector: 1" X 1" sodium iodide (NaI)Tl scintillator
Sensitivity: Typically 175 cpm/microR/hr (137Cs gamma )
Energy Response: Energy dependent
Meter Dial: 0 - 25 microR/hr, 0 - 50 microR/hr, BAT TEST
Range Selections: 0 - 25, 0 - 50, 0 - 250, 0 - 500, 0 - 5000 microR/hr
Light: Push-button to activate
Linearity: Reading within plus or minus 10% of true value
Audio: Built in unimorph speaker with ON/OFF switch (greater than 60 dB at 2 feet)
Calibration Controls: Accessible from front of instrument (protective cover provided)
Response: Toggle switch for FAST (4 seconds) or SLOW (22 seconds) from 10% to 90% of final reading
Reset: Push-button to zero meter
Power: 2 each "D" cell batteries (housed in sealed compartment that is externally accessible)
Battery Life: Typically 600 hours with alkaline batteries (battery condition can be checked on meter)
Meter: 2.5" (6.4cm) arc, 1 mA analog type
Construction: Cast and drawn aluminum with beige polyurethane enamel paint
Temperature Range: -4° F(-20° C) to 122° F(50° C)
May be certified for operation from -40° F(-40° C) to 150° F(65° C)
Size: 7.8"(19.8 cm)H X 3.5"(8.9 cm)W X 8.5"(21.6 cm)L
Weight: 4.5 lbs(2.1 kg) including batteries

Manual         ANSI Test Report          Ludlum Model 19 Response Curve

Model 19 Survey Meter Dials

Model 19 meter face 5

 Model 19 meter face 6

202-016
0 - 50
mR/hr; 0 - 25 mR/hr

202-702
0 - 0.5
mSv/h; 0 - 0.25 mSv/h

 

Accessories

Replacement Parts

Check Source
Headset
Standard Carrying Case
Air and Water Tight Carrying Case

Meter Bezel
Meter Movement
Handle
Detector Assembly


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