testo 327 - Flue Gas Analyser (advanced kit + gas leak detector + CPA1 kit)

Overview

Accurate flue gas analysis, gas leak detection, and carbon monoxide testing are essential for ensuring the efficiency and safety of heating systems and appliances. Whether performing routine servicing, commissioning boilers, or testing cookers and flueless appliances, the right tools are key to effective diagnostics.

testo 327 Advanced Kit + Gas Leak Detector + CPA1 Set – Precision Testing for Complete Safety

The testo 327 advanced kit + gas leak detector + CPA1 set offers a full solution for combustion analysis, leak detection, and targeted CO testing. The testo 327 flue gas analyser provides reliable measurement of oxygen (O₂), carbon monoxide (CO), and calculated carbon dioxide (CO₂), helping engineers optimise combustion settings for efficiency and compliance.
With a bright 4-line LED display and intuitive menu navigation, the testo 327 ensures clear visibility of readings, even in low-light conditions. The advanced kit includes two wired temperature clamp probes for measuring flow and return temperatures, enabling differential temperature calculations for improved diagnostics.

Enhanced Safety with Gas Leak Detection

The included gas leak detector enhances safety with its fast methane detection, 16" flexible probe, and multiple alert modes—visual LEDs, audible tones, and vibration—ensuring quick and accurate identification of leaks in hard-to-reach areas.

Specialised CO Testing for Cookers and Flueless Appliances

The CPA1 probe set is designed for precise carbon monoxide testing of cookers, gas fires, and flueless appliances in accordance with BS 7967 standards. This allows engineers to conduct targeted safety checks, ensuring compliance with industry regulations and protecting customers from potential CO hazards.

A Complete Testing Solution

The testo 327 advanced kit + gas leak detector + CPA1 set includes a flue gas probe, two wired temperature clamp probes, a gas leak detector, and a CPA1 probe set—all stored in a protective carry case for easy transport. Built for durability and efficiency, this kit is an essential choice for heating engineers conducting in-depth safety and performance testing.

General technical data	Weight (with probe) Approx. 700 g
Dimensions 201 x 83 x 44 mm
Operating temperature -5 to +45 °C
Display type LCD (Liquid Crystal Display)
Display function Backlit 2-line display
Power supply Battery: 1500 mAh, mains unit 5V/1A
Storage temperature -20 to +50 °C

Weight

(with probe) Approx. 700 g

Dimensions

201 x 83 x 44 mm

Operating temperature

-5 to +45 °C

Display type

LCD (Liquid Crystal Display)

Display function

Backlit 2-line display

Power supply

Battery: 1500 mAh, mains unit 5V/1A

Storage temperature

-20 to +50 °C

Temperature - TC Type K (NiCr-Ni)	Measuring range -40.00 to +600.00 °C
Accuracy ±0.50 °C (0 to 99.90 °C) ±0.50 °C (100 to 600 °C)
Resolution 0.1 °C
Reaction time < 50 s
Temperature (ambient temperature)

Measuring range

-40.00 to +600.00 °C

Accuracy

±0.50 °C (0 to 99.90 °C)

±0.50 °C (100 to 600 °C)

Resolution

0.1 °C

Reaction time

< 50 s

Temperature (ambient temperature)

Flue gas O₂	Measuring range 0 to 21 Vol.%
Accuracy ±0.2 Vol.%
Resolution 0.1 Vol.%
Reaction time t₉₀ 30 s

Measuring range

0 to 21 Vol.%

Accuracy

±0.2 Vol.%

Resolution

0.1 Vol.%

Reaction time t₉₀

30 s

Differential Pressure flue gas Draught - Piezoresistive	Measuring range -40.0 to +40.0 hPa
Accuracy ±0.02 hPa (-0.50 to +0.60 hPa) ±0.03 hPa (+0.61 to +3.00 hPa) ±1.50 % of mv (3.01 to +40.0 hPa)

Measuring range

-40.0 to +40.0 hPa

Accuracy

±0.02 hPa (-0.50 to +0.60 hPa)

±0.03 hPa (+0.61 to +3.00 hPa)

±1.50 % of mv (3.01 to +40.0 hPa)

Flue gas degree of effectivity, Eta (calculated)	Measuring range 0 to 120 %
Resolution 0.1 %

Measuring range

0 to 120 %

Resolution

0.1 %

Flue gas loss (calculated)	Measuring range 0 to 99.0 %
Resolution 0.1 %

Measuring range

0 to 99.0 %

Resolution

0.1 %

Flue gas CO₂ calculation (calculated from O₂)	Measuring range 0 to CO₂ max (Display range)
Accuracy ±0.2 Vol.%
Resolution 0.1 Vol.%
Reaction time t₉₀ < 40 s

Measuring range

0 to CO₂ max (Display range)

Accuracy

±0.2 Vol.%

Resolution

0.1 Vol.%

Reaction time t₉₀

< 40 s

Flue gas CO (without H₂-compensation)	Measuring range 0 to 4000 ppm
Accuracy ±10 % of mv (2001 to 4000 ppm) ±20 ppm (0 to 400 ppm) ±5 % of mv (401 to 2000 ppm)
Resolution 1 ppm
Reaction time t₉₀ 60 s

Measuring range

0 to 4000 ppm

Accuracy

±10 % of mv (2001 to 4000 ppm)

±20 ppm (0 to 400 ppm)

±5 % of mv (401 to 2000 ppm)

Resolution

1 ppm

Reaction time t₉₀

60 s

General technical data	Diameter probe shaft 6 mm
Cable length 1.5 m
Length probe shaft 180 mm
Product colour Black
Temperature maximum 500 °C
Diameter 6 mm
Weight 346 g

Diameter probe shaft

6 mm

Cable length

1.5 m

Length probe shaft

180 mm

Product colour

Black

Temperature maximum

500 °C

Diameter

6 mm

Weight

346 g

General technical data	Weight 1400 g
Dimensions 256 x 516 x 135 mm ((LxWxH))
Product colour Black

Weight

1400 g

Dimensions

256 x 516 x 135 mm ((LxWxH))

Product colour

Black

General technical data	Dimensions 145 x 75 x 40 mm
Product-/housing material Plastic
Product colour Black
Battery type 4 x type AA batteries
Interface IR/IRDA interface
Weight 258 g

Dimensions

145 x 75 x 40 mm

Product-/housing material

Plastic

Product colour

Black

Battery type

4 x type AA batteries

Interface

IR/IRDA interface

Weight

258 g

testo 327 - Flue Gas Analyser (advanced kit + gas leak detector + CPA1 kit)

testo 327 - Flue Gas Analyser (advanced kit + gas leak detector + CPA1 kit)

Overview

testo 327 Advanced Kit + Gas Leak Detector + CPA1 Set – Precision Testing for Complete Safety

Enhanced Safety with Gas Leak Detection

Specialised CO Testing for Cookers and Flueless Appliances

A Complete Testing Solution

General technical data

General technical data

Temperature - TC Type K (NiCr-Ni)

Temperature - TC Type K (NiCr-Ni)

Flue gas O₂

Flue gas O₂

Differential Pressure flue gas Draught - Piezoresistive

Differential Pressure flue gas Draught - Piezoresistive

Flue gas degree of effectivity, Eta (calculated)

Flue gas degree of effectivity, Eta (calculated)

Flue gas loss (calculated)

Flue gas loss (calculated)

Flue gas CO₂ calculation (calculated from O₂)

Flue gas CO₂ calculation (calculated from O₂)

Flue gas CO (without H₂-compensation)

Flue gas CO (without H₂-compensation)

General technical data

General technical data

General technical data

General technical data

General technical data

General technical data

Flue gas probes

Temperature probes

Accessories