Ludlum 192

Handheld survey meter

Ludlum 192 – handheld survey meter from Ludlum Measurements. Weight as specified: 2.3 kg including batteries.

Detector (D × L): NaI(Tl) scintillator, 5.1 × 2.5 cm (2 × 1 in.), internally housed1
Weight as specified: 2.3 kg including batteries1

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)	NaI(Tl) scintillator, 5.1 × 2.5 cm (2 × 1 in.), internally housed1

Performance

Linearity	Reading within 10 % of true value1

Measuring range

Sensitivity (¹³⁷Cs gamma)	Typically 650 cpm per µR/hr1
Measurement range	0 to 50 µSv/h (0 to 5000 µR/hr)1
Energy response	Energy dependent1

Power & battery

Battery life and conditions	Typically 600 hours with alkaline batteries1
Power supply	Two standard alkaline "D" cell batteries, secured in an isolated compartment2

Mechanical

Dimensions (H × W × L)	21.6 x 8.9 x 22.4 cm with handle1
Weight as specified	2.3 kg including batteries1

Environment & ratings

Operating temperature	−20 to +50 °C (−4 to 122 °F); may be certified for operation from −40 to +65 °C (−40 to 150 °F)2

General

Meter dial	0 to 5 µR/hr, BAT TEST (other meter faces available)1

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 192 microR Survey Meter
Publisher: Ludlum MeasurementsProduct page Specifications tab, 'Detector (D x L)'; Specifications tab, 'Sensitivity (137Cs gamma)'; Specifications tab, 'Linearity'; Specifications tab, 'Battery Life' … Checked 2026-10-16
2
Ludlum Model 192 manual
Publisher: Ludlum MeasurementsManual Manual p. 18 (p. 5-1), section 5, Environmental Conditions for Normal Use; Manual p. 14 (p. 3-1), section 3 Specifications Checked 2026-10-16