 Ludlum Model
12
Radiation Ratemeter
Features
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Low Price
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Rugged
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4
Decade Analog Ratemeter
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Supports G-M, Scintillation, and Proportional
Type Radiation Detectors
Introduction
This general
purpose, handheld analog ratemeter supports GM, proportional and scintillation
type detectors. 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 4 decade range,
instrument shut off and battery test, an audio on/off switch, a fast/slow
response switch, a high voltage display button, and a count reset button The
analog meter face comes in a variety of options to support the measurement units
and ranges for the additional external detector selected. A 39" long straight
type detector cable with "C" style connector and batteries are included in the
price of the instrument.
Specifications
PART NUMBER:
48-1609
COMPATIBLE RADIATION DETECTORS: G-M, proportional, scintillation
(see list below)
METER FACE: 0 - 500 cpm, 0 - 2.5 kV, BAT TEST (others available - see
list below)
METER: 2.5" (6.4 cm) arc, 1 mA analog type
MULTIPLIERS: X1, X10, X100, X1000
LINEARITY: Reading within 10% of true value with detector connected
CONNECTOR: Series "C"
(others available)
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)
HIGH VOLTAGE: Adjustable from 200 - 2500 volts (can be read on meter)
DISCRIMINATOR: Adjustable from 1 - 100 mV
RANGE: Typically 0 - 500,000 counts/minute (cpm)
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 2000 hours with alkaline batteries (battery
condition can be checked on meter)
CONSTRUCTION: Cast and drawn aluminum with beige powder-coating
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: 6.5" (16.5 cm) H X 3.5" (8.9 cm) W X 8.5" (21.6 cm) L
WEIGHT: 3.5 lbs (1.6 kg) including batteries
 This Product is CE Certified
Compatible
Radiation Detectors
Compatible radiation detectors are listed below and are
not included with the survey meter price. An additional charge will be added for
each detector ordered.
*For Mylar window scintillators it is strongly
suggested that the optional
overload indicator be used on the Model
12 Radiation Ratemeter to better determine the presence of a light leak.
Meter Faces
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202-356
0 - 500 cpm; 0-2.5 kV
For Any Detector |
202-354
0-10 cps; 0-2.5 kV
For Any Detector |
202-618
0-660 cpm; 0-0.2 mR/hr
For Model 44-9; 44-9-18;
44-40; 44-88; 44-89; 44-94 |
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202-428
0-5 mR/hr
For Model 44-2 |
202-645
0-5 mR/hr; 0-800 cpm
For Model 44-2 and 44-9 |
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Options
Replacement Parts
Technical Information
Other Ludlum Products
Ludlum Information
For more information or to request a quotation,
please contact us
by phone at: (865)
947-5123 or by email at:
sales@deqtech.com.
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