2 best handheld gas detectors

• Detect Various Flammable Gases: Portable Natural gas sniffer and tester is used to locate exact gas leak for various combustible gas, such as methane, natural gas, propane, LPG, sewer gas, coal gas, gasoline, other flammable gases
• Detection Range: Approximately 50 to 10,000 ppm (Based on Methane), instant response once encounter leakage points
• Easy-to-Use Gas Leak Detector: Powered by 3 AAA batteries (Not included), 12 inch bendable gooseneck can locate and detect the gas leaks even in hard-to-reach areas at home & VR, kitchen and fireplace etc., refer to “How and Where to Use the Y201 Combustible Gas Detector” video
• Sound and Visual Gas Alarm: Six red LED’s (visual) and 85dB audible alerts once encounter gas leakage along pipeline or around the suspected leakage points
• Original Design and Lifetime Technical Support: Design patent and certifications are applied to make sure the product quality and uniqueness. Replacement and friendly customer service are available even it’s broken in 24 months.

User questions & answers

Question:	is it precise
Answer:	Yes ours came with the headgear
Question:	Is any detection of gas harmful? My apartment supposedly just fixed its gas leak, but this is still showing the first level red light within my apt
Answer:	Don't know the max size. I wear a 7 3/4 hat and this fit fine. There is a minimal amount of adjustment left.
Question:	Do I need to replace the sensor after 2 years to keep this working? Or, is the unit useless after about 2 years? I read the sensor tip has a lifespan
Answer:	These type of hard hats is varies but it is fiberglass though. The color can be light to mid dark brown. They ship me with a light brown one. I was surprised it was very light, it was thin. Just be careful when buying from Warehouses. They say they will give you a new ratchet suspension but they never did. So be aware of that and if it happen they won't ship you a new one, they will ask you to reship it back and buy a new one, hopping you will receive the hard hat with the suspension but NO GUARENTEE. But to answer your question, yes it does look like that, but remember it varies on the seller because it come from a warehouse.
Question:	I don’t understand after it warms up how to detect gas ? Do I move the button until it stops ticking and no alarm? I move + and alarms sounds
Answer:	Front brim, ball cap style.

Product features

Techamor Portable Gas Leak Detector/Sniffer - Y201

The Y201 portable sniffer is an easy-to-use device that provides sound and visual alarm in presence of methane, propane, such as LPG, fuel and natural gas.

It’s mainly used to find and locate exact gas leak point along gas pipeline, around fittings or connectors at home & VR, and other similar applications. Helps to save hundreds of diagnostic fees from technician or plumber, and makes it's possible to debug gas leakage anytime by DIY.

For 24h gas monitor and detection, refer to Y301 and Y302.

2.1 Warm up process: around 10s

The speaker will always have “di didi…” until we turn off device, except one moment in step 2.2. At warm up period, ticking noise frequency is slow: around 2~3 times/s.

The knob is used to adjust sensitivity of detector after finish 10s warm up process, during the process, no matter how to adjust the knob, the device won't have any reactions.

2.2 Rotate the knob to adjust sensitivity

If the alarm sounds prematurely and LED lights are on after warm up, need to decrease sensitivity to prevent false alarm (dial downward "-", shown as red arrow) .

Rotate the knob to adjust sensitivity until the first bottom LED turn off or at the threshold of lighting up, and the moment that ticking sound stops. This is the best status.

But if it's inconvenient to get the best status, we can just make the first bottom LED be on and have slow ticking "di di...." sound. Because once encounter leakage, all the rest 4~5 LED will be triggered on together at just one moment.

2.3 Ready to sniff or trace leakage

Move the probe along pipeline or around the suspected leakage points, such as fittings, connectors and switches, once encounter gas leakage, all 5~6 LED lights will be triggered immediately and the low frequency (2~3 times/s) ticking will change into piercing sounds (frequency 6~7 times/s, too fast and human ears cannot distinguish one time by one time) .

3. Different Usage Pictures Collection from Lovely Customers

4.1 Could tell more related to use?

1) Easy to understand video will be good choice, refer to “How and where to use the Y201 gas leak detector” around pictures area at beginning . 2) Get service support, engineers on staff from factory online will help to answer any questions related to leakage if above video can't help to understand.

4.2 Why always has ticking sound?

The design of ticking sound has two purposes: 1) Indicates the device is working.For some cases, we need to extend the probe to the area that we can't see LED lights, customers could judge thru the sound changes. The green power LED light is also used to indicate the device is working. 2) Represent different levels of gas leakage. Low frequency (around 2~3 times/s) means warm-up period or no leakage, if changed into high frequency (around 6~7 times/s) during detection process, means encounter leakage issue.

Notes: above is based on we set sensitivity well, because if we rotate the knob at anti-clockside too much, even there don’t have any leakage, all the 6 LED will be triggered on and sound will become piecing high frequency.

4.3 Some batteries only use 10~15 minutes, then low battery indicator is on.

According to our experiment data at lab for different batteries brand, usually last from 15 minutes to 4 hours. Different brand batteries have very different quality. Indeed, the device is hungry for batteries. The sensor in the probe needs large power for micro burning process and we can feel a little warm if we use finger to hold the probe. Another reason maybe product itself, components (resistor, capacitor......) tolerance or damage on the PCB board may also lead to large power consumption, but the rate is very low.

Usually when we find customers from home inspection company, we will suggest purchasing rechargeable Li-batteries, because their technicians or plumbers use the device frequently and Li-batteries will help to save some batteries cost.

4.4 Is it normal or safe if get 1 red bar when move to high moisture room, around connectors or simply blow on probe?

Don't worry, it's normal, the large moisture change and CO affect the sensor performance, and may lead to false alarm by 1~2 LED red bars, but only last for 1~3s (very short time) if we move probe away. If we encounter leakage along the pipeline or connectors, all 5~6 LED bars will be triggered on at one moment, light and piercing sound alarm will last at least for 6~8s.

4.5 what's best distance between probe and pipeline/ranges/connectors.... during check process?

Recommend 1~10cm, if too far, concentration will become smaller as distance increase from leak point, and maybe not enough find and locate tiny leakage.

4.6 How about bubble method to check leakage compared with Y201?

Bubble is very good way and can be used to check all kinds of gas leakage while Y201 is mainly used for combustible gas. But for very tiny leakage and very strong leakage, bubble method maybe not good enough: 1) too tiny leak can't blow up bubble, too strong will blow the liquid away and can't have bubble, 2) some areas we can't extend to apply bubble liquid, 3) need good luck and skills to control the bubble liquid concentration if DIY bubble liquid, 4) in some case, liquid contact may lead to equipment or device damage.

The best way is: use both methods for double confirm if allowed, since bubble is more visible.

Product description

The ET120 is it the perfect choice for HVAC professionals. It is an easy-to-use tester that provides audible and visual alarms in the presence of methane, propane and other combustible gases at concentrations as low as 50 ppm. It features two levels of sensitivity depending on users' needs: High (approximately 50 to 1000 ppm) and Low (approximately 1,000 to 10,000 ppm). Gas Leak Detector with 18-Inch flexible gooseneck. Combustible gas detection range: 50 to 10000 ppm. Combustible gas detection range: 50 to 10000 ppm. Over-molded body for comfortable grip. Auto power-off after 10 minutes of non-usage conserves battery life. Includes detector, 4xAAA batteries, instruction manual and storage pouch. For more than 160 years, Klein Tools has manufactured premium-quality, professional-grade hand tools that deliver the performance, durability and precision needed to get the job done right. Our family of engineers, workers and craftsman continue to put six generations of expertise into every tool we create by using only the highest quality materials, superior workmanship, and keeping manufacturing as close to home as we can. Klein isn't just the name of our company, it's also our family name. And since we're an American company that's family-owned and family-run, you know you can count on us to be here tomorrow. Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day ... Since 1857.

• Detection range: Approximately 50 to 10,000 ppm* (*based on Methane)
• Two levels of sensitivity: High (approximately 50 to 1000 ppm) and Low (approximately 1000 to 10,000 ppm)
• Five red LED's (visual) and 85dB audible alerts that increase with gas concentration
• Automatic zero-point calibration at power-up (lights will flash during self-calibration; this does not indicate the presence of gas)
• 18-Inch flexible gooseneck expands sensor's reach; clips onto meter for storage

User questions & answers

Question:	Will this detect a co2 leak
Answer:	this gas detector very easy to use and it works precisely
Question:	Can this detect r22 and 410a
Answer:	After warm-up and the yellow light goes out adjust the side dial to adjust the sensitivity until the first, bottom LED is at the threshold of lighting up and the ticking just starts to sound. If the alarm sounds after warm up the knob is rotated too far + rotate - until the first LED is lit or about to be lit. If the first level red light is lit and the alarm is not sounding, it's not detecting any gas.
Question:	Will this detect hydrogen
Answer:	HI,Usually the products can work for at least 2 to 3 years , if sensor is not sensetive enough , we recommend you to replace the sensor at that time . You can send Email to contact us, feedback your address and we will arrange our after service team to ship sensors to you for replacement. We can use DHL to ship , or ask our US local team to ship from your side . Anyway, if you have any concerns or question , just contact us and we will reply in 24 hours and feedback corresponding solutions . Thank you choose our products and service .
Question:	Does this detect hydrogen sulfide
Answer:	Turn it on let it warm up a just dial till lights go out and ticking starts the ticking means the sensor is sampling the air if it detects methane it will alarm the more lights the higher the gas concentration

Product features

Combustible Gas Leak Detector

The ET120 is an easy-to-use tester that provides audible and visual alarms in the presence of methane, propane and other combustible gases at concentrations as low as 50 ppm, making it the perfect choice for HVAC professionals.