Ludlum 193-6

Handheld survey meter

Ludlum 193-6 – handheld survey meter from Ludlum Measurements. Weight as specified: 3.9 kg including batteries.

Weight as specified: 3.9 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	EJ-212 plastic scintillator, 2.5 cm (1 in.) thick, at the end of a 1.2 m pole1

Performance

Linearity	Reading ±10 % of true value1

Measuring range

Detector measurement range	Background to 10 µSv/h (1000 µR/hr)1
Sensitivity (¹³⁷Cs gamma)	Typically 150 kcpm per µSv/h (1500 cpm per µR/hr)1
Energy response	Energy dependent1

Power & battery

Power supply	2 "D" cell batteries (alkaline, or NiCd rechargeable; not chargeable in the instrument)2
Battery life and conditions	Typically 600 hours with alkaline batteries1

Mechanical

Weight as specified	3.9 kg including batteries1
Overall length	1.3 m1
Dimensions	Meter: 16.5 × 8.9 × 21.6 cm including instrument handle; Model 44-132 detector: 16.9 × 21.6 cm (Dia × L)3

Environment & ratings

Operating temperature	−20 to +50 °C (−4 to 122 °F)3

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 193-6 Extended Reach Gamma Survey Meter (data sheet)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 193-6 Extended Reach microR Survey Meter
Publisher: Ludlum MeasurementsProduct page Specifications tab, 'Detector Range'; Specifications tab, 'Sensitivity (137Cs gamma)'; Specifications tab, 'Linearity'; Specifications tab, 'Battery Life' … Checked 2026-10-16
2
Model 193-6 Extended Reach Gamma Survey Meter (data sheet)
Publisher: Ludlum MeasurementsDatasheet Specifications, 'Power' Checked 2026-10-16
3
Ludlum Model 193-6 manual
Publisher: Ludlum MeasurementsManual Manual p. 19 (p. 5-1), section 5, Environmental Conditions for Normal Use; Manual p. 16 (p. 3-2), section 3 Specifications (instrument and detector) Checked 2026-10-16