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Product Features
  • 4,000ppm CO sensor with automatic pump shut off to help prevent saturation.
  • 10 user selectable fuels
  • rechargable Li-ion battery
  • Adaptors and accesories for pressure measurement, and differential temperature clamp probes supplied
  • Testo IR printer
  • Soft carry case with shoulder strap
  • Independently tested according to EN 50379 Parts 1-3
Delivery options

At Cadmus Products we aim to deliver orders efficiently and at highly competitive rates. 

  • We can ship consignments of all shapes and sizes and hazardous content across the UK and worldwide. Most of our orders are sent via DHL, however sometimes we may use other couriers.
  • If you are purchasing a laboratory product online you can find out the price of shipping checkout. If you are obtaining a quote for a product, then we will email you
    with our best shipping prices along with your quote.
  • Please see our delivery page for full information

testo 320B Flue Gas Analyser (Advanced Set)


The testo 320 basic features all the essential functions for carrying out flue gas analysis on domestic heating systems, including flue draught, pressure measurements, and differential temperature measurement. The flue gas analyser is easy to use with its full colour graphic display featuring a user-friendly menu guidance. The analyser measures both O2 and CO (4,000ppm sensor fitted as standard) and can also display calculated parameters such as combustion ratio, CO2, etc.

testo 320B Key Features:

  • Clear operation via colour display
  • Covers 5 main domestic flue gas analyser tests
  • Flue gas, draught, tightness & let-by, ambient CO
  • Differential temperature and pressure with advanced kits
  • Pump shutdown to protect against high CO
Kit includes testo 320B Flue Gas Analyser, rechargeable battery and calibration protocol, Flue Gas Probe (180mm x 6mm diameter), Pressure hose connection kit, Differential temperature kit (2 x pipe clamp probes), testo infrared printer, soft carry case with shoulder strap, AC/USB power supply.
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