Ludlum
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LUDLUM M-3 SURVEY METER W/44-2
Pine Item #61218
The Model 3 is a portable radiation survey instrument with four linear ranges used in combination with exposure rate, or cpm meter dials.
The instrument features a regulated high-voltage power supply, unimorph speaker with audio ON/OFF capability, fast-slow meter response, meter reset button and six-position switch for selecting battery check or scale multiples of Xo.1,X1,X10 and X100.
Each range multiplier has its own calibration potentiometer.
Features:
Gamma Radiation survey.
NIST-traceable certificate of calibration.
Specifications
| Scintillator | 1\" diameter x 1\" thick sodium iodide |
| Range | 60 keV to 1.25 MeV |
| Sensitivity | Typically 175 cpm/ µR/ hr (137 Cs gamma) |
| Operating Voltage | 500 to 1200 volts |
| Dimensions | 2\" diameter x 7.3\" long |
| Weight | 1 lb. |
| Multipliers | Xo.1 X1 X10 X100 |
| Audio | Built-in unimorph speaker with ON/OFF switch (greater tha 60dB at 2 feet) |
| Threshold | Fixed at 30 mV +/-10 mV |
| Response | Fast (4 seconds) or Slow (22 seconds) from 10 to 8=90% of final reading. |
Dimension
| US | Metric | |
| Dimensions | 6.5 x 8.5\" x 3.5\"\" | 16.5 x 21.6 x 8.9 cm |
Weight
| US | Metric | |
| Weight | 3 lbs | 1.36 kg |