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Model 30-4

The Ludlum Model 30-4 joins the Model 30 digital display unit with a 22.9 cm (9 in.) REM ball containing a 3He detector, thereby providing a significant weight reduction and more compact, maneuverable instrument for determining neutron dose rates.Three modes of operation – RATE, MAX, and COUNT – are available for the user. Measurements can be collected in two sets of units (primary and secondary) for RATE and MAX modes in cps, cpm, rem/hr, or Sv/h units. An internal switch is used to enable or disable the front-panel setup feature to protect desired settings from inadvertent modification. Setup is also available via software from Ludlum Measurements.

This instrument features a large, easily-readable LCD (liquid crystal display) that may be rotated for maximum ease of use for the operator. The connecting cable is threaded through the rugged carrying handle to simplify use. In addition the display unit may be detached from REM ball permitting the operator to position the detector and the display unit to best advantage within the limits of the cable length. Other features are an audio warning tone and easy, intuitive, user-friendly design. Splash-resistant construction allows the Model 30 to be used in outdoor environments. The instrument body is constructed of lightweight, durable, high-impact plastic.

Features
  • Multi-Function Digital Display Unit
  • Low-Weight Device Substitutes for Ratemeter
  • Simple Switching Between Two Sets of Measurement Units
  • Moderated Neutron Detector
  • Range: 0 to 99.9 mSv/h (0 to 9.99 rem/hr)
  • Display Unit Detaches for Greater Versatility
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Related Products

Headphone Jack

This modification for survey meters adds a headphone jack to the instrument body so headphones can be used to monitor click-per-event audio and audio alarms. Headphones are helpful when the instrument is being used in areas with high ambient noise levels or in areas where the audio would be distracting to others, such as in a medical or office environment.

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Shoulder Strap

This 1.8 m (6 ft) adjustable shoulder strap is a great way to keep your hands free while operating survey meters. The nylon strap with a wide rubber comfort pad can also be helpful for conveying some of the heavier instrument/detector combinations in the field. 

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Model 3-IS NORM Kit
  • Ready-to-Go Kit in Rugged Case
  • Intrinsically Safe Analog Survey Meter
  • Measures Alpha, Beta, and Gamma Contamination
  • Includes:
    • Model 3-IS Intrinsically Safe Survey Meter
    • Model 44-9 Alpha-Beta-Gamma Detector
    • Model 44-2 High Energy Gamma Detector
    • Check Source, Cable, Batteries, Transport & Storage Case

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Model 14C-MERK
Medical Environment Response Kit
  • Model 14C Survey Meter
  • Model 44-2 Gamma Scintillator Detector
  • Model 44-9 Alpha-Beta-Gamma GM Detector
  • Model 25 Series Personal Radiation Monitor
  • Check Source and Holder
  • Rugged Case

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Model 2241-3MERK
Medical Environment Response Kit
  • Model 2241-3 Scaler-Ratemeter
  • Model 44-2 Gamma Scintillator Detector
  • Model 44-9 Alpha-Beta-Gamma GM Detector
  • Model 44-142 Beta Scintillator Detector
  • Model 25 Series Personal Radiation Monitor
  • Check Source and Holder
  • Rugged Case

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Model 3001-MERK
Medical Environment Response Kit
  • Model 3001 Survey Meter
  • Model 44-2 Gamma Scintillator Detector
  • Model 44-9 Alpha-Beta-Gamma GM Detector
  • Model 44-142 Beta Scintillator Detector
  • Model 25 Series Personal Radiation Monitor
  • Check Source
  • Rugged Case

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Model 14C-RK
Emergency Response Kit
  • Model 14C Survey Meter
  • Model 44-2 Gamma Scintillator Detector
  • Model 44-9 Alpha-Beta-Gamma GM Detector
  • Check Source and Holder
  • Rugged Case

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Cables

Ludlum offers straight cables with either type C, BNC, SHV, MHV, or UHF connectors. Unless specified otherwise, Ludlum survey meters and detectors are shipped with “C” type connectors. When a meter and accompanying probe are ordered as a matched set, Ludlum automatically includes a 99 cm (39 in.) straight-type cable with “C” connectors at no additional charge. (Note: We no longer offer coiled cables.)

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Model 3002/FM Series
Alpha-Beta Floor Monitor
  • Alpha-Beta Scintillation Detectors
  • Active Window Area: 400 or 1080 cm2 (62 or 167.4 in2)
  • 22.4, 40.9, or 65.7 cm (8.8, 16.1, or 25.9 in.) Wide Detection Path
  • Adjustable Detector Height

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Model 42-38
WENDI-2 Wide Energy Neutron Detector
  • Detector Type:
    • 3He Tube
    • Moderator: 22.9 cm (9 in.) dia.
  • Sensitivity (241Am/Be): 450 cpm per mrem/hr
  • Detection Range: Thermal to 5 GeV
Model 78-9
Stretch Scope Survey Meter
  • Digital Meter
  • Extends to 3.6 m (12 ft.)
  • Pancake GM Detector

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Model 78-6
Stretch Scope Survey Meter
  • Analog + Digital Meter
  • Extends to 3.6 m (12 ft.)
  • NaI(Tl) Scintillator Detector
  • Range: 0.01 to 50 µSv/h (1 to 5000 µR/hr)

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Model 79/2
Stretch Scope Survey Meter
  • Digital Meter
  • Extends to 4.5 m (14.75 ft.)
  • Internal Energy-Compensated GM
  • Range: 0.001 mSv/h to 0.04 Sv/h (0.1 mR/hr to 4 R/hr)

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Model 79/1
Stretch Scope Survey Meter
  • Digital Meter
  • Extends to 4.5 m (14.75 ft.)
  • CsI(Tl) Scintillator Detector
  • Range: 0.01 µSv/h to 500 µSv/h (1 µR/hr to 50 mR/hr)

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Model 79
Stretch Scope Survey Meter
  • Digital Meter
  • Extends to 4.5 m (14.75 ft.)
  • Energy-Compensated GM Detector
  • Range: 10 µSv/h to 10 Sv/h (1 mR/hr to 1000 R/hr)

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