Ludlum 6

Handheld survey meter

Ludlum 6 – handheld survey meter from Ludlum Measurements. Measurement range: 0 to 10 mSv/h (0 to 1000 mR/hr). Weight as specified: 1.6 kg, including batteries.

Detector: Energy-compensated GM detector, housed inside the instrument enclosure1
Measurement range: 0 to 10 mSv/h (0 to 1000 mR/hr)1
Weight as specified: 1.6 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	Energy-compensated GM detector, housed inside the instrument enclosure1
Measurement range	0 to 10 mSv/h (0 to 1000 mR/hr)1
Power supply	2 "D" batteries1
Battery life and conditions	Typically 600 hours with alkaline batteries1
Operating temperature	-20 to 50 °C1
Dimensions (H × W × L)	16.5 x 8.9 x 21.6 cm with handle1
Weight as specified	1.6 kg, including batteries1
Energy response	Within 15% of true value from 60 keV to 3 MeV1

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 6 – Geiger Counter
Publisher: Ludlum MeasurementsProduct page Specifications tab, 'Detector'; Specifications tab, 'Measurement Range'; Specifications tab, 'Power'; Specifications tab, 'Battery Life' … Checked 2026-10-16