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Elcometer 456

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Controlling ducting deposits and monitoring their build up is essential to maintain hygiene standards and reduce fire risks in heating and ventilation systems.

The Elcometer 456 Duct Deposit Measuring System has been specifically designed to meet the requirements of the DTT (Deposit Thickness Test) in Appendix D1 the HVCA’s (Heating & Ventilation Contractor’s Association) TR19 Guide to Good Practice, for the Internal Cleanliness of Ventilation Systems.

By using the Elcometer 456 Ferrous Top Gauge with the specially designed F1D probe and duct cleaning template, readings can be taken of the deposit thickness on a specific test area, before and after cleaning.

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  • Easy to use gauge: Features a large display screen and on screen user instructions
  • Low cost and portable: Supplied in a convenient carry case for use in the field
  • Duct Cleaning Template: For accurately marking the area to be tested ensuring that before and after readings are taken in the same test area
  • ElcoMaster software, supplied as standard with the Elcometer 456 Duct Deposit Measuring System, includes a template designed specifically for reporting duct deposit measurements


Elcometer 456 technical data:

Measurement speed      Greater than 60 readings per minute

Display STN Graphics (LCD)      128 x 64 pixels; 19.8 mm x 39.6 mm

Battery type      2 x AA (LR03) Rechargeable batteries can be used

Battery life      30 to 40 hours continuous use with alkaline dry batteries. (15,000 to 20,000 readings at an average of 8 readings per minute)

Operating temperature      0 to 50 °C

Dimensions      128 mm x 68 mm x 28 mm

Weight (including dry batteries)      130 g

Probe technical data:

Range      0 to 1500 μm (0 to 60 mils)

Accuracy      ± 1 % to ± 3 % or ± 2.5 μm (± 0.1 mil)

Resolution      0.1 μm in the range 0 μm to 99.9 μm (0.01 mil in the range 0 to 4.99 mils) 1 μm in the range 100 μm to 1500 μm (0.1 mil in the range 5 to 60 mils)



Elcometer 456 duct deposit measuring system data sheet

  • Technical Document
  • PDF file
  • 2 MB

Elcometer 456 duct deposit measuring system user manual

  • Technical Document
  • PDF file
  • 536 KB

Elcometer 456 meter data sheet

  • Technical Document
  • PDF file
  • 11 MB

Elcometer 456 user manual

  • Technical Document
  • PDF file
  • 6 MB



How many measurements do you need to take when taking measurements in a duct ?


When working to the HVCA Method for Measuring the Thickness of Deposits (Dust & Grease), 20 readings need to be taken in a specific location using the supplied duct cleaning template. These readings are automatically saved to a batch file in the Elcometer 456 gauge.

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