Ludlum 14C

Handheld survey meter

Ludlum 14C – handheld survey meter from Ludlum Measurements. Weight as specified: 1.6 kg including batteries.

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

Compatible external detectors	Any GM or scintillation detector operating at 900 Vdc1
Internal detector	Energy-compensated GM tube (used with ×1000 scale only), range 0 to 20 mSv/h (0 to 2000 mR/hr)1

Performance

Linearity	Reading within 10 % of true value with detector connected1

Measuring range

Energy response	Within 15% of true value between 60 keV and 3 MeV (internal detector only)1
Range multipliers	×0.1, ×1, ×10, ×100, ×10001

Electronics & signal

Detector bias	900 Vdc1

Connectivity & interface

Detector connector	Series "C" (others available)1

Power & battery

Power supply	2 "D" cell batteries1
Battery life and conditions	Typically greater than 2000 hours1

Mechanical

Dimensions (H × W × L)	16.5 × 8.9 × 21.6 cm1
Weight as specified	1.6 kg including batteries1

Environment & ratings

Operating temperature	-20 to 50 °C1

General

Meter dial	0–2 mR/hr, 0–5 kcpm, 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 14C General Purpose Survey Meter
Publisher: Ludlum MeasurementsProduct page Specifications tab, 'Compatible External Detectors'; Specifications tab, 'Internal Detector'; Specifications tab, 'High Voltage'; Specifications tab, 'Linearity' … Checked 2026-10-16