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

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

Product ID: 172286902

Details

Alarm
Vibration
Brand
FORENSICS FD
Color
Black Yellow
Item Weight
14.4 ounces
Material
ABS
Operating Humidity
85 percent

💾1200+ alarm data logs

📊Color display with graphing

⏱️Real-time multi-gas detection

4310.34 DT

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Description

🚨 Stay ahead of danger with precision and style — your safety, visualized!

RUGGED RELIABLE DESIGN - Waterproof, dust-proof, explosion-proof ABS casing with anti-slip grip for tough job sites.
BUILT IN PUMP 4 FT PROBE - Extended reach and active sampling for hard-to-access environments.
COMPREHENSIVE DATA LOGGING - Stores over 1200 alarm events with vibration alerts to keep you informed and compliant.
PRECISION USA NIST CALIBRATION - Trust in accuracy with LA-certified sensors for reliable safety monitoring.
VIBRANT COLOR DISPLAY GRAPHING - Intuitive, easy-to-read interface that visualizes gas trends at a glance.

The Forensics 4 Gas Monitor is a professional-grade multi-gas detector featuring electrochemical sensors for O2, CO, H2S, and LEL. It boasts USA NIST traceable calibration, a vibrant color display with graphing capabilities, and a built-in pump with a 4-foot probe for active sampling. Designed for durability, it offers waterproof, dust-proof, and explosion-proof protection, plus advanced data logging with over 1200 alarm records and vibration alerts, making it an essential tool for safety-conscious professionals.

Specifications

ASIN	B07WKC4FTV
Alarm	Vibration
Best Sellers Rank	#185,479 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #273 in Multi Testers
Brand	FORENSICS DETECTORS FD
Color	Black, Yellow
Customer Reviews	4.4 4.4 out of 5 stars (37)
Enclosure Material	ABS
Item Dimensions D x W x H	1.2"D x 2.6"W x 5.1"H
Item Weight	14.4 ounces
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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4310.34 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered 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 Tunisia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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