Model 3192

Digital Background Survey Meter

Part Number: 48-4329

Features

• High Sensitivity to Gamma
• Large, Backlit, Easy-To-Read LCD Screen
• Auto-Ranging
• RATE, MAX, and COUNT Modes
• Sigma Audio Mode
• Splash-Resistant Construction for Outdoor Use
• All Digital Calibration
• Lightweight Yet Rugged
• Simple 5-Button Interface

The Model 3192 is a portable and versatile instrument with an internal detector used for background measurements of gamma radiation levels up to 50 μSv/h (5,000 μR/hr). The internal Nal scintillation detector has a sensitivity of 650 cpm per μR/hr. It features a large, easy-to-read LCD screen and audible alarms and is controlled using a simple five-button interface. The meter body is made of high-impact plastic and splash resistant construction allows the instrument to be used outdoors.

Three modes of operation are available – RATE, MAX, and COUNT – which can be selected by pressing the MODE button. Measurements can be collected in two sets of units (primary and secondary) for RATE and MAX modes in cps, cpm, mR/h, or μSv/h units. The user can switch between the two sets of units by pressing the UNITS button. A sigma audio mode can be enabled that allows the user to find small increases above the background radiation level. When enabled with the optional Lumic Data Logger Kit (see Options), data can be logged in any of the operational modes using the LOG button on the handle. Up to 1000 data points can be stored internally.

Instrument setup can be done either through the front-panel controls or via the Lumic Calibration Kit (see Options). The Model 3192 is shipped ready to use with batteries and a calibration certificate.

Note: While the detector used in this instrument is sensitive and is often used for detection of near-background levels of radiation, its non-linear energy response means that dose and exposure measurements may be over/under reported. (See graph below.)

• Specifications
• Graphs
• Options
• Documents

• Specifications
• Graphs
• Options
• Documents

Specifications

Detector	5.1 cm diameter x 2.5 cm thick (2 x 1 in.) internal Nal(TI) scintillator
Sensitivity	Typically 65,000 cpm per μSv/h (650 cpm per μR/hr) (137Cs gamma)
Energy Range	Non-linear (see Energy Response Curve in Graphs tab)
Linearity	Reading within 10% of true value
Display	3-digit auto-ranging LCD with large 20 mm (0.8 in.) digits. Units: (k)cps, (k)cpm, (μ)(m)R(/h), (μ)(m)Sv(/h). Indicators: bar graph, MAX, ALARM, USB, audio, low-battery.
Detector Range	Background to 50 μSv/h (0 to 5,000 μR/hr), 0-999 kcpm
Backlight	Built-in ambient light sensor automatically activates low-power LED backlight, unless internal dipswitch is set to continuous-on (will reduce battery life)
User Controls	ON/OFF: Extra-long press to turn ON; short press to acknowledge; extra-long press plus 3 seconds to turn OFF UNITS: Short press changes the units between count rate, dose/exposure, or disintegration, an extra-long press to change count time in COUNT mode AUDIO: Short press to adjust audio level MODE: Short press alternates between modes: RATE (displays count rate), MAX (captures peak rate), and COUNT (captures rate or dose readings for a user-selectable count time from 0 to 10 minutes) LOG: Short press to log current display (requires Lumic Data Logger Kit, see Options), or initiate count in COUNT mode
Data Logging	Can store up to 1000 data points internally. Requires Lumic Data Logger Kit (see Options).
Response Time	User-selectable from 1 to 60 seconds, or auto-response rate of FAST or SLOW
Alarms	Two count rate, exposure/dose, and count alarm set-points adjustable over the display range
Sigma Audio Mode	Alarm that allows user to find small increases above the background radiation level. The instrument will beep whenever it measures a rate that exceeds a threshold rate above the measured background rate.
Overload Protection	High count rate saturation protection prevents false display of lower count rates. “OL” will appear on the display and an audio warning will be triggered.
Loss of Count Protection	After a user-settable time interval (default 60 seconds) of no pulses from the detector, unit will flash a zero reading and the alarm audio will be triggered
Dead Time Correction	Employs first and second order corrections for extended performance
Overrange	If the reading should exceed the predefined detector range, the instrument will flash a maximum reading and trigger an audio warning.
HV Range	400 to 1500 Vdc
Threshold	-20 to -100 mVdc
Audio	Approximately 4.5 kHz, click audio greater than 65 dB at 0.6 m (2 ft), alarm audio greater than 72 dB
Power	Four alkaline “AA” batteries
Battery Life	Approximately 750 hours of operation (as low as 100 hours with backlight continuous-on), 16-hour low battery warning
Construction	High-impact plastic with water-resistant rubber seals and separate battery compartment
Temperature Range	-20 to 50 °C (-5 to 122 °F) May be certified for operation from -40 to 65 °C (-40 to 150 °F)
Environmental Rating	NEMA rating of 5 or IP rating of 53
Size (H x W x L)	20.3 x 11.4 x 21.6 cm (8 x 4.5 x 8.5 in.)
Weight	1.52 kg (3.35 lb)

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Graphs

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Options

Option	Description	Part Number
Lumic Calibration Kit	Lumic Calibration Software allows the reading and writing of important parameters via a USB port in the Model 3000 Series and Model 30 family of instruments. The kit includes Lumic Calibration Software versions 1.0 and 2.0, Model 3000 Series USB cable, and Model 30 family USB cable.	4519-865
Lumic Data Logger Kit (Model 3000-Series)	Includes Lumic Data Logger Software and required cable. Lumic Data Logger Software is required to use instrument data logging features.	4498-1019
Headphone Jack	Adds a headphone jack to the instrument.	4498-555
Stereo/Mono Headphones	Adjustable stereo/mono headphones.	22-9313
Shoulder Strap	1.8 m (6 ft) adjustable nylon shoulder strap. Requires instrument case modification.	4498-868
Model 3000-Series Case	Rugged, dust- and waterproof transport and storage case.	2312958

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Documents

• Data Sheet
• Product Manual
• Model 3000 Series Comparison Table
• Options for Model 3000 Series

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