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2                                          EZ40-en-US_v1.4   10/21 

Introduction 

Congratulations on your purchase of the Extech EZ40 Combustible Gas Leak Detector. The EZ40 
detects  the  presence  of  combustible  gas  and  nuisance  vapors  (Natural  Gas,  Methane,  Ethane, 
Propane,  Butane,  Acetone,  Alcohol,  Ammonia,  Steam,  Gasoline,  Jet  Fuel,  Hydrogen  Sulfide, 
Smoke, Industrial Solvents, Lacquer Thinner, Naphtha) in concentrations as low as 10% LEL for 
Methane and alerts the user with audible and visual alarms. The 

16” (406mm) flexible gooseneck 

provides  easy  access  in  difficult  to  reach  locations.  This  meter  is  shipped  fully  tested  and 
calibrated and with proper use will provide years of reliable service. 
 
 

Description 

1. 

Probe clip 

2. 

Sensor tip guard & sensor 

3. 

Alarm light 

4. 

Ready light (Power-on) 

5. 

On/Off slide switch 

6. 

Earphone jack 

7. 

Tick rate (sensitivity) adjustment 

Note: 

Battery compartment is on rear of unit 

 

 

 

 

 

Summary of Contents for EzFlex EZ40

Page 1: ...User Manual EzFlex Combustible Gas Leak Detector Model EZ40 ...

Page 2: ... Lacquer Thinner Naphtha in concentrations as low as 10 LEL for Methane and alerts the user with audible and visual alarms The 16 406mm flexible gooseneck provides easy access in difficult to reach locations This meter is shipped fully tested and calibrated and with proper use will provide years of reliable service Description 1 Probe clip 2 Sensor tip guard sensor 3 Alarm light 4 Ready light Powe...

Page 3: ...evel and decrease to zero Earphone Jack In an area with high levels of background noise an earphone can be plugged in to the EZ40 In addition the speaker is disabled when an earphone is connected so the ticking and alarm will not disturb others in the general area Caution Tick and alarm sounds through the earphone are very loud LEL a definition The LEL of a flammable gas is the minimum concentrati...

Page 4: ...ly abrasive solvents or other cleaners to the surface of the meter or sensor Store with the batteries removed and avoid extreme temperature and humidity Specifications Gases Detected Natural Gas Methane Ethane Propane Butane Acetone Alcohol Ammonia Gasoline Jet Fuel Hydrogen Sulfide Smoke Industrial Solvents Lacquer Thinner Naphtha Steam Carbon Monoxide indication only not to quantify Sensitivity ...

Page 5: ...libration for most of our products Contact us for information on calibration and repair availability refer to the contact information below Annual calibrations should be performed to verify meter performance and accuracy Product specifications are subject to change without notice Please visit our website for the most up to date product information www extech com Contact Customer Support Customer S...

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