Model 193
The Ludlum Model 193 Survey Meter is a portable gamma survey instrument with adjustable audio and visual alarms. The instrument is designed to be used with external scintillation detectors for optimum performance in locating and measuring low-level (near ˝background˝) gamma radiation.
The Model 193 offers two types of alarms for both experienced and inexperienced users:
- A user adjustable meter-driven alarm for alarm indication above a particular set-point
- A deviation beep alarm which gives indication to the rise of radiation above background levels
The unit features range multipliers of ×1, ×10, ×100, and ×1000, which provide an overall range of 0 to 5000 µR/hr when used in conjunction with a 0 to 5 µR/hr meter dial (others are available). Other features include a two-position meter response time switch, adjustable detector operating voltage (HV), and an audio ON/OFF switch. Multi-turn potentiometers are located under a removable front panel calibration cover (removed for clarity in image).
The instrument is capable of using either standard ˝D˝ cell batteries or nickel-cadmium rechargeable batteries. The two ˝D˝ cell batteries are located in an isolated compartment, easily accessible from the front panel.
Features
- Accurate (Energy-Flat) Ambient Dose Equivalent Rate Measurements
- Eliminates High False Readings of Typical microR Meters
- Rugged Scintillator, Will Not Leak
- Low Range: Background to 19.99 µSv/h (1999 µrem/hr)
- High Range: 1 to 1999 µSv/h (0.1 to 199.9 mrem/hr)
- Improved Replacement for Bicron Microrem
- "/E" Extended Version Has Low-Energy, 3.2 mg/cm2 Window for Operation Below 50 keV
Related Products
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- Internal 2.5 x 1.9 cm (1 x 0.75 in.) CsI Scintillator Detector
- Sensitivity (137Cs): 17,500 cpm per µSv/h (175 cpm per µR/hr)
- Range: Background to 500 µSv/h (50 mR/hr)
- Alarms
Model 3192
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- Sensitivity (137Cs): 65,000 cpm per μSv/h (650 cpm per μR/hr)
- Range: Background to 50 μSv/h (0 to 5,000 μR/hr)
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Model 19
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- Sensitivity (137Cs): 175 cpm per µR/hr
- Range: 0 to 5000 µR/hr
Model 19A
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- Sensitivity (137Cs): 17,500 cpm per µSv/h (175 cpm per µR/hr)
- Range: 0 to 5 µSv/h (0 to 500 µR/hr)
- Alarm
Model 192
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- Range: 0 to 50 µSv/h (0 to 5000 µR/hr)
- Dual Action Alarm
Model 193
microR Survey Meter
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Model 12S
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Model 12SA
microR Survey Meter with Alarm
- 4-Range Analog Meter
- Internal 2.5 x 2.5 cm (1 x 1 in.) NaI Scintillator Detector
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- Range: 0 to 3000 µR/hr
- Alarm
Model 2401-S
microR Pocket-Size Survey Meter
- Low-Level Gamma & X-Ray Survey
- 3-Range Analog Meter
- Internal 18 mm dia. CsI Scintillator Detector
- Sensitivity (137Cs): 100 cpm per µR/hr
- Range: 0 to 50 µSv/h (0 to 5000 µR/hr)
- Alarm