Model 26 Friskers

Contamination monitoring

Check people and objects with a handheld instrument that combines the detector and counting electronics in one unit.

Detector type: Integrated pancake GM1
Energy range: 16.3 keV–1.3 MeV1
Count-rate range: 0.1 cps–1.99 kcps; 1 cpm–99.9 kcpm1

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 Emergency services & first response Environmental monitoring & radiation protection Industry & quality control

Key features

One-handed operation with two buttons.
Pancake GM detector for contamination checks.
LCD with automatic backlighting.

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 type	Integrated pancake GM1
Active detector area	15.51 cm²1

Measuring range

Energy range	16.3 keV–1.3 MeV1
Count-rate range	0.1 cps–1.99 kcps; 1 cpm–99.9 kcpm1
Response time	1–60 s; automatic FAST/SLOW1

Power & battery

Power supply	2 AA batteries1
Battery life	About 1000 h; as low as 500 h with backlight set to 'Continuous On'1

Mechanical

Dimensions (H × W × L)	4.6 × 6.9 × 27.2 cm1
Weight	0.45 kg1

Environment & ratings

IP rating	IP531
Operating temperature	−20 to +50 °C1

General

Measurement functions	RATE, MAX, COUNT1

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 26 Integrated Frisker (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 26 Integrated Frisker (data sheet)
Publisher: Ludlum MeasurementsDatasheet p. 1 title; p. 2, Specifications (DETECTOR); p. 2, Specifications (WINDOW AREA); p. 1, Features; p. 2, Specifications … Checked 2026-10-16