Ludlum 3078i/1

Handheld survey meter

Ludlum 3078i/1 – handheld survey meter from Ludlum Measurements. Enclosure rating and conditions: IP53. Weight as specified: 2.5 kg including batteries and shoulder strap.

Enclosure rating and conditions: IP531
Weight as specified: 2.5 kg including batteries and shoulder strap1

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

External detector	Two energy-compensated GM tubes1
Internal detector	CsI scintillator, 18 x 18 mm1

Performance

Linearity	±10 %1

Measuring range

Response time	User-selectable from 1 to 60 seconds, auto SLOW, auto FAST, fixed SLOW (22 s), fixed FAST (4 s)1
Internal detector range	Background to 500 µSv/h (50 mR/hr)1
Dose response condition	Nonlinear energy response; dose and exposure measurements may be over/underreported1
Energy response	Within 25% of true value from 60 keV to 3 MeV1

Power & battery

Power supply	Four "AA" batteries1
Battery life and conditions	Approximately 75 hours with no backlight (as low as 20 hours with backlight and lamp continuous-on)1

Mechanical

Dimensions (H × W × L)	20.0 x 11.4 x 125.1 cm retracted, fully extended length 466.7 cm1
Weight as specified	2.5 kg including batteries and shoulder strap1

Environment & ratings

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

Ordering & accessories

Part number	48-4337-11

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 3078 Series – Stretch Scope with Optional Internal Detector
Publisher: Ludlum MeasurementsProduct page Specifications tab, 'External Detector'; Specifications tab, 'Linearity'; Specifications tab, 'Power'; Specifications tab, 'Battery Life' … Checked 2026-10-16