Menu
  • Home
  • Products
    • Contamination Monitors
    • Clearance Monitors
    • Laundry Monitors
    • Vehicle Monitors
    • Data Sheets
  • Company
    • About Us
    • Ludlum Division
    • ISO 9001 Certificate
    • Quality Policy
    • Impress
    • Privacy Policy
    • Ethics Policies
  • Contact
Ludlum GmBH Transparent

+49 (0)40 2286 139 -0
  • English (United States)
  • Deutsch (Deutschland)
  • Home
  • Products
    • Contamination Monitors
    • Clearance Monitors
    • Laundry Monitors
    • Vehicle Monitors
    • Data Sheets
  • Company
    • About Us
    • Ludlum Division
    • ISO 9001 Certificate
    • Quality Policy
    • Impress
    • Privacy Policy
    • Ethics Policies
  • Contact

Products

  • Contamination Monitors
  • Clearance Monitors
    • HWM-21
    • HWM-38
    • HWM-65
    • HWM-100
    • HWM-180
    • HWM-300
    • HWM-400
    • HWM-400S
    • HWM-550
    • HWM-1800
    • HWM-1800C
  • Laundry Monitors
  • Vehicle Monitors
  • Data Sheets

HWM-21
Small Article Monitor

hwm-21_web


Features

  • Unique Detector Housing Design to Reduce Radiation Streaming Effects
  • Intuitive and User-Friendly Operating Software
  • Energy Filter Settings to Optimize Discrimination of Background Radiation
  • Export of Measurement/Parameter Data in XML Format via USB
  • Radionuclide Composition Suggestions from Detector Pulse Analysis
  • Access to Historical Measurement Data via Integrated Database

Clearance Monitor for Reliable and Precise Detection of Contamination on Small Items

The HWM-21 small article monitor is designed for the measurement and release of small items such as tools, hard hats, personal protective equipment, documents, and measuring instruments.

The standard equipment includes:

  • 2 gamma PVT detectors
  • 15 mm (0.6 in.) lead shielding
  • Two door interlock system with the option to use one door only
  • Easy to clean stainless steel housing
  • Integrated 7 in. touch-screen display
  • Automated measuring process with user guidance
  • Energy filter settings to optimize discrimination of background radiation from licensed material

The HWM-21 provides fast and reliable detection of gamma emitting contamination, based on the latest measurement electronics. With the integrated maintenance modules, the system can be updated continuously to keep up its high performance for every measuring task now and in the future.

 

  • Specifications
  • Documents
  • Specifications
  • Documents

Specifications

Standards The monitor is compliant with the following standards:
CE, CSA / UL or EMC, ISO11929
Detectors 2x gamma plastic detectors
Detection volume: > 9.44 L (0.33 ft3)
Direct connection of each detector to the PC via USB
User Software Intuitive software and touch-screen display, automated measurement process with user guidance, indications of results and measurement material position on the display. Web based for remote access.
Electronics Integrated illumination in the chamber, status-LED, interlock-relays with interface to external units
Sensors 2 door sensors with interlock
Ext. Dimensions
(H x W x D)
653 x 450 x 460 mm (25.7 x 17.7 x 18.1 in.), incl. handles
Chamber Volume
(H x W x D)
190 x 295 x 370 mm (7.5 x 11.6 x 14.6 in.)
21 L (0.75 ft3)
Shielding Standard: 15 mm (0.6 in.) lead
Option: 30 mm (1.2 in.) lead
Weight Standard: approx. 220 kg (485 lb)
With 30 mm lead: 360 kg (794 lb)
Power Supply External power adapter input 100 - 240 V, 1.6 A max / 24 V, 5 A output

Documents

  • Data Sheet

Impressum

Ludlum GmbH
Uwestr. 12
22525 Hamburg
Germany

Phone: +49 (0)40 2286 139 -0
Fax: +49 40 2286 139 10
Email:
https://ludlumgmbh.com
LinkedIn

Commercial Register Hamburg HRB 145218

Managing Directors: Dr. Ingo Kölln, Daan van Bree

VAT No. DE 313221648

Tax No. 45/735/02162

The Person Responsible for the Editorial Content: Dr. Ingo Kölln, Daan van Bree

Registry Court: Hamburg

© 2025 Ludlum Measurements, Inc.

Privacy Policy