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Model 2241, 44-9 Digital Scaler/Ratemeter, Pancake G-M Detector-RENTAL

Ludlum Measurements

Model 2241 Digital Scaler/Ratemeter is a portable general-purpose survey meter equipped with a Pancake Geiger-Mueller Detector for measurement of alpha, beta and gamma radiation. The Model 2241 operated in either Ratemeter Mode with a moving decimal point or 6-digit in Scaler Mode. The unit has both visual and audible alarms. The Ludlum Model 44-9 G-M Pancake G-M Detector will detect alpha, beta and gamma radiation in mR. Its size and shape provide easy handling for surveying or personnel monitoring. The detector is energy dependent, over responding by a factor of six in the 60 keV to 100 keV range when normalized to 137Cs. This combination ratemeter and detector ship with a carrying case and certificate of calibration. An operating manual is available upon request.

Specifications:

  • Detector: Pancake-type halogen quenched G-M
  • Meter Dial: 0-2 mR/hr, BAT TEST
  • Meter: 2.5" (6.4cm) arc, 1 mA analog type
  • Linearity: Reading within 10% of true value with detector connected
  • Dtector Sensitivity: Typically 3300 µR/hr
  • Connector: Series "C"
  • 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)
  • High Voltage: Adjustable from 400 - 1500 volts (M2241); 900 volts (D44-9)
  • Threshold: Fixed at 40 mV ± 10 mV
  • Response: Toggle switch for FAST (4 seconds) or SLOW (22 seconds) from 10% to 90%
  • of final reading RESET: Push-button to zero meter (M2241); Energy dependent (D44-9)
  • Power: 2 "D" cell batteries
  • Battery Life: Typically greater than 2000 hours with alkaline batteries
  • Detector Window: 1.7+/- 0.3 mg/cm2 mica; active – 15 cm2& open – 12cm2
  • Detector Efficiency (4pi): 5%-14C; 22%-90Sr/90Y; 19%-99Tc; 32%-32P; 15%-239Pu
  • Detector Dead Time: Typically 80 microseconds
  • Temperature Range: -4°F(-20°C) to 122°F(50°C)
  • Size: 6.5" H x 3.5" W x 8.5" L (M2241); 1.8” H x 2.7” W x 10.7” L (D44-9)
  • Weight: 3.5 lbs. (1.6 kg) including batteries (M2241); 1.0 lb (0.5 kg) (D44-9)

Style: Daily
Instrumentation Types: Multi-Gas Detector
UOM: EA

Model 2241, 44-9 Digital Scaler/Ratemeter, Pancake G-M detector

Primary Image

Model 2241, 44-9 Digital Scaler/Ratemeter, Pancake G-M Detector-RENTAL

Manufacturer: Ludlum Measurements
Mfr# 420-0065

$45.00

UOM: EA
Technical Details
Style Daily
Instrumentation Types Multi-Gas Detector
Style: Weekly
Instrumentation Types: Multi-Gas Detector
UOM: EA

Model 2241, 44-9 Digital Scaler/Ratemeter, Pancake G-M detector

Primary Image

Model 2241, 44-9 Digital Scaler/Ratemeter, Pancake G-M Detector-RENTAL

Manufacturer: Ludlum Measurements
Mfr# 420-0065

$135.00

UOM: EA
Technical Details
Style Weekly
Instrumentation Types Multi-Gas Detector
Style: Monthly
Instrumentation Types: Multi-Gas Detector
UOM: EA

Model 2241, 44-9 Digital Scaler/Ratemeter, Pancake G-M detector

Primary Image

Model 2241, 44-9 Digital Scaler/Ratemeter, Pancake G-M Detector-RENTAL

Manufacturer: Ludlum Measurements
Mfr# 420-0065

$405.00

UOM: EA
Technical Details
Style Monthly
Instrumentation Types Multi-Gas Detector