What is the diameter of the extension tubing, I would like to order a longer one?

Tubing is 1/8 inch ID and 1/4 inch OD silicone. Thank you.

Will this device measure levels of Pentane at floor height?

No, this unit measure EX LEL combustibles in the EX LEL or explosiveness and safety purposes. It seems you need something more sensitive, in the PPM range.

Can this detect pure hydrogen?

I've never actually tried mine on pure hydrogen, but it has an LEL sensor which is supposed to detect all combustible gasses. It works by heating a little element on the inside. If the element is exposed to combustible gas, it gets hotter, and that indicates to the machine that combustible gasses are present. Any combustible gas should trigger the sensor. LEL is an abbreviation for Lower Explosive Limit, so any potentially explosive gas should be sensed by the machine. Having said that, I would suggest testing it in the presence of a small amount of hydrogen first, just to be sure. You don't want to risk your life on this if you're not certain.

Can the combustibles reading (% lel) be converted via a correction coefficient to get a reading in ppm for specific chemicals such as toluene or nmp?

Please see Dr. Koz video answer.

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FORENSICS DETECTORS FD 4 Gas Monitor by | Built-in Pump Multi Gas Meter | O2, CO, H2S, LEL | Color Display & Graphing | USA NIST Calibration | Computer Data Logging |

FORENSICS DETECTORS FD 4 Gas Monitor by | Built-in Pump Multi Gas Meter | O2, CO, H2S, LEL | Color Display & Graphing | USA NIST Calibration | Computer Data Logging |

Product ID: 493677273

Details

Brand
FORENSICS FD
Colour
Yellow
Power source
Battery
Product dimensions
3D x 6.6W x
Style
modern

⛽4-gas detection (O2, CO, H2S, LEL)

💾1200 alarm data logs

📊Color display + graphing

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NZ$1962

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Description

🚨 Stay ahead of danger with precision you can trust!

RUGGED RELIABLE - Waterproof, dust-proof, explosion-proof ABS housing with anti-slip grip
VIBRANT COLOR DISPLAY - Intuitive color screen with real-time graphing for quick decisions
INSTANT MULTI GAS SAFETY - Detect O2, CO, H2S & Combustibles with one device
CERTIFIED ACCURACY TRUST - USA NIST calibration + QA certificate + 1-year warranty
BUILT IN HIGH PERFORMANCE PUMP - Effortless sampling with 4-foot probe for hard-to-reach areas

The FORENSICS DETECTORS FD 4 Gas Monitor is a professional-grade multi-gas meter featuring electrochemical sensors for Oxygen, Carbon Monoxide, Hydrogen Sulfide, and Combustibles. It boasts a built-in pump with a 4-foot probe, vibrant color display with graphing, and stores up to 1200 alarm records. Calibrated to USA NIST standards and built rugged with waterproof, dust-proof, and explosion-proof ABS housing, it ensures reliable, on-the-go safety monitoring backed by a 1-year warranty and quality assurance.

Specifications

ASIN	B07WKC4FTV
Alarm	Vibration
Brand	FORENSICS DETECTORS FD
Color	Yellow
Customer Reviews	4.5 4.5 out of 5 stars (34)
Enclosure Material	ABS
Item Dimensions D x W x H	3D x 6.6W x 13H centimeters
Item Weight	0.9 Pounds
Manufacturer	FORENSICS DETECTORS
Mfr Part Number	FD-600-4GAS-UK
Model Number	FD-600-4GAS
Operating Humidity	85 percent
Power Source	Battery Powered
Product Style	modern
Sensor Type	Electrochemical
UPC	300389770045
Unit Count	1 Count

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NZ$1962

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to New Zealand.

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