Ludlum Model 2000

General purpose scaler

Counting electronics for external GM, proportional and scintillation detectors, powered by mains or batteries.

Weight without batteries: 3.1 kg1

Download product sheet (PDF)All values with references – for tender documents

Specifications checked against the manufacturer’s documents on 2026-10-16

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Overview

Nuclear power & nuclear technology Research & laboratories Environmental monitoring & radiation protection

Key features

Six-digit LED readout and adjustable counting time.
RS-232 output to a computer or printer.
External detector selected separately.

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 detectors	GM, proportional and scintillation detectors1

Performance

Scaler linearity	Reading within 2% of true value1

Measuring range

Scaler range	0–999,999 counts1

Electronics & signal

High voltage	200–2500 V1
Discriminator	2–100 mV1

Connectivity & interface

Communication	RS-232 (9-pin); RS-232–USB adapter cable included1

Power & battery

Power supply	95–250 V AC, 50–60 Hz or 4 D-cell batteries1
Typical battery life	120 h, alkaline batteries1
Weight without batteries	3.1 kg1

Mechanical

Dimensions (H × W × L)	21.6 × 12.7 × 23.5 cm1

Ordering & accessories

Part number	48-16481

General

Count timer	0–999 min; multiplier ×0.1 or ×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

PDFModel 2000 General Purpose Scaler (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 2000 General Purpose Scaler (data sheet)
Publisher: Ludlum MeasurementsDatasheet p. 1, Specifications; p. 1, Specifications (DATA OUTPUT) Checked 2026-10-16