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Product information "testo 300 Longlife"

Flue Gas Analyser testo 300 Longlife – O₂, H₂-Compensated CO up to 30.000 ppm, Retrofittable NO Sensor, incl. BT® Connector

Flue gas analysers from testo are standard tools for adjusting, servicing and testing oil-fired, gas-fired and condensing heating systems. They measure O₂, CO, flue gas temperature and draught, calculate efficiency and losses, and document the results directly on site.

Key Benefits at a Glance

  • Intuitive measurement menus with a responsive Smart-Touch display
  • Includes O2 sensor and H2-compensated CO sensor up to 30.000 ppm (NO sensor can be retrofitted); integrated precision pressure measurement
  • Integrated precision pressure measurement
  • On-site documentation and report delivery by email
  • Versatile probes with quick, user-operated probe replacement

Scope of delivery

  • testo 300 Longlife flue gas analyser with O2 sensor and H2-compensated CO sensor up to 30.000 ppm, NO sensor can be retrofitted
  • testo Bluetooth® Connector
  • USB mains adapter
  • EasyHeat PC software available as a free download

Technical specifications

Temperature - TC Type K (NiCr-Ni)
Measuring range-40 to +1200 °C
Accuracy±0,5 % of measured value (remaining measuring range), ±0,5 °C (0,0 to +100,0 °C)
Resolution0,1 °C (-40 to +999,9 °C), 1 °C (remaining measuring range)
Differential pressure – piezoresistive
Measuring range-100 to +200 hPa
Accuracy±1 % of measured value (+50,1 to +100,0 hPa), ±1,5 % of measured value (+100,1 to +200 hPa), ±0,5 hPa (0 to +50,0 hPa)
Resolution0,01 hPa
O₂ in flue gas
Measuring range0 to 21 Vol. %
Accuracy±0,2 vol. %
Resolution0,1 Vol. %
COlow in flue gas (with H₂ compensation)
Measuring range0 to 500 ppm
Accuracy±2 ppm (40 to +500 ppm), ±5 % of measured value (remaining measuring range)
Resolution0,1 ppm
CO measurement (with H₂ compensation), automatic dilution
Measuring range0 to 30000 ppm
Accuracy±100 ppm or ±10 % of measured value
Resolution1 ppm
NO in flue gas
Measuring range0 to 3000 ppm
Accuracy±5 % of measured value (101 to 2000 ppm), ±10 % of measured value (2001 to 3000 ppm), ±5 ppm (0 to 100 ppm)
Resolution1 ppm
NOlow in flue gas
Measuring range0 to 300 ppm
Accuracy±5 % of measured value (40 to 300 ppm), ±2 ppm (0 to +39,9 ppm)
Resolution0,1 ppm
Differential pressure draught measurement in flue gas – piezoresistive
Measuring range-9,99 to +40 hPa
Accuracy±0,02 hPa (0,1 to +3,00 hPa), ±1,5 % of measured value (+3,01 to +40 hPa), ±0,005 hPa (0 to 0,1 hPa)
Resolution0,01 hPa (remaining measuring range), 0,001 hPa (0 to 0,1 hPa)
Efficiency determination, Eta (calculated)
Measuring range0 to 120 %
Resolution0,1 %
Flue gas heat loss (calculated)
Measuring range0 to 99,9 %
Resolution0,1 %
CO₂ determination (calculated from O2)
Measuring rangeDisplay range 0 to CO₂ max
Accuracy±0,2 vol. %
Resolution0,1 Vol. %
CO in ambient air
Measuring range0 to 2000 ppm
Accuracy±10 ppm (0 to 100 ppm), ±10 % of measured value (101 to 2000 ppm)
Resolution1 ppm
Differential pressure 4 Pa measurement – piezoresistive
Measuring range-50 to +50 Pa
Accuracy±3 % of measured value (remaining measuring range), ±0,3 Pa (< 10 Pa)
Resolution0,1 Pa
General technical specifications
Operating humidity15 to 90 %RH, non-condensing
WeightApprox. 800 g
Dimensions244 (incl. probe connection) x 98 x 59 mm (LxWxH)
Operating temperature-5 to +45 °C
Protection ratingIP40
Product colourBlack/orange
Display type5.0" Touch Display, HD 1280*720 pixels, IPS (160k)
Power supplyRechargeable battery, USB mains adapter
Warranty conditionshttps://www.testo.com/guarantee

Operating conditions

Portable handheld measuring instrument for use in boiler rooms and buildings; rechargeable battery operation with mains adapter.

  • Operating temperature: -5 to +45 °C
  • Protection rating: IP40
  • For construction sites
  • For temporary use
  • For hard-to-reach areas
  • Not suitable for potentially explosive atmospheres (no ATEX certification)

Typical applications

Skilled trades · Building management & facilities · Energy supply · Engineering & technical services

Product information

  • Manufacturer: Testo SE & Co. KGaA, Celsiusstraße 2, 79822 Titisee-Neustadt, Germany
  • Manufacturer's part number: 0633 3004 92

Downloads

Volume discounts for bulk orders
We offer additional discounts for larger order quantities. Let us know the quantity required and we will prepare a tailored quotation.
Request a bulk quotation

Technical Details

Operating Conditions: For construction sites, For hard-to-reach areas, For temporary use
Primary Function: Measuring & Testing
Sectors/Industry: Building & Facility Management, Energy Supply & Wind Power, Maintenance & Technical Services, Trades & Workshops

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Frequently Asked Questions

Unless stated otherwise on the product, delivery takes 14 working days within Germany and 21 working days to all other delivery countries. For custom-made products we agree the delivery date with you individually.

Many products are available on request in special sizes or colours or with custom printing. Get in touch – we will check the options for your requirements.

We deliver to Germany as well as Denmark, Norway, Sweden and Finland. Deliveries to Austria and Switzerland are available on request.

We supply products from renowned manufacturers. Technical data sheets and safety data sheets are available directly on the product pages; certificates and declarations of conformity are available per product on request.

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