Ludlum 3019

Handheld survey meter

Ludlum 3019 – handheld survey meter from Ludlum Measurements. Detector (D × L): Internal CsI scintillator, 2.5 × 1.9 cm. Enclosure rating and conditions: IP53.

Detector (D × L): Internal CsI scintillator, 2.5 × 1.9 cm1
Enclosure rating and conditions: IP532
Weight as specified: 1.06 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 (D × L)	Internal CsI scintillator, 2.5 × 1.9 cm1

Performance

Linearity	±10 %1

Measuring range

Detector measurement range	Background to 500 µSv/h (50 mR/hr)1
Sensitivity and reference	175 cpm per µR/hr1
Response time	User-selectable from 1 to 60 seconds, or Auto-Response Rate 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” batteries2
Battery life and conditions	Approximately 750 hours of operation (as low as 100 hours with backlight configured for continuous-on)1

Mechanical

Dimensions (H × W × L)	16.5 x 11.4 x 21.6 cm1
Weight as specified	1.06 kg1

Environment & ratings

Operating temperature	-20 to 50 °C1
Enclosure rating and conditions	IP532

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

Documents

PDFModel 3019 Digital Background Survey MeterDatasheet · 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 3019 – Digital microR Survey Meter
Publisher: Ludlum MeasurementsProduct page Specifications tab, 'Detector (D x L)'; Specifications tab, 'Detector Range'; Specifications tab, 'Sensitivity'; Specifications tab, 'High Voltage' … Checked 2026-10-16
2
Model 3019 Digital Background Survey Meter
Publisher: Ludlum MeasurementsDatasheet p. 2, Specifications, 'POWER'; p. 2, Specifications, 'ENVIRONMENTAL RATING' Checked 2026-10-16