Ludlum 3192

Handheld survey meter

Ludlum 3192 – handheld survey meter from Ludlum Measurements. Enclosure rating and conditions: IP53. Weight as specified: 1.52 kg.

Detector: Internal NaI(Tl) scintillator, 5.1 cm diameter × 2.5 cm thick1
Enclosure rating and conditions: IP531
Weight as specified: 1.52 kg1

Download product sheet (PDF)All values with references – for tender documents

Specifications checked against the manufacturer’s documents on 2026-10-16

Manufacturer’s product page (opens in a new tab)

Overview

Nuclear power & nuclear technology Defence, security & preparedness Emergency services & first response Environmental monitoring & radiation protection Industry & quality control

Specifications

The number after each value refers to the source listed below. Values are as published by the manufacturer; the exact configuration is always confirmed in our quotation.

Detector

Detector	Internal NaI(Tl) scintillator, 5.1 cm diameter × 2.5 cm thick1

Performance

Linearity	±10 %1

Measuring range

Detector measurement range	Background to 50 μSv/h (0 to 5,000 μR/hr), 0-999 kcpm1
Sensitivity and reference	Typically 65,000 cpm per μSv/h (650 cpm per μR/hr) (137Cs gamma)1
Response time	User-selectable from 1 to 60 seconds, or auto-response rate of FAST or SLOW1
Energy response	Non-linear (energy response curve available from the manufacturer)1

Electronics & signal

Detector bias	400 to 1500 Vdc1

Power & battery

Power supply	Four alkaline “AA” batteries1
Battery life and conditions	Approximately 750 hours of operation (as low as 100 hours with backlight continuous-on)1

Mechanical

Dimensions (H × W × L)	20.3 x 11.4 x 21.6 cm1
Weight as specified	1.52 kg1

Environment & ratings

Operating temperature	-20 to 50 °C1
Enclosure rating and conditions	IP531

The data comes from the manufacturer’s published documents. Manufacturers may change specifications; the current configuration and performance are confirmed in the quotation.

Documents

PDFDatablad (PDF)Datasheet · Ludlum

Sources

The number after each value refers to the source listed below. Values are as published by the manufacturer; the exact configuration is always confirmed in our quotation.

1
Model 3192 – Digital Background Survey Meter
Publisher: Ludlum MeasurementsProduct page Specifications tab, 'Detector'; Specifications tab, 'Detector Range'; Specifications tab, 'Sensitivity'; Specifications tab, 'HV Range' … Checked 2026-10-16