Handheld Multi-Gas (4-Gas) Detector, CO, H2S, O2, LEL

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$449.67

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Stock: In Stock
Model: GD500-4GAS
Weight: 1.00
SKU: GD500-4GAS

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Handheld multi gas detector can measure 4 gases (CO, H₂S, O₂, LEL) at the same time with high accuracy and reliability, min size and high protability, and it is widely used in oil, metallurgy, chemical, medical, agriculture, refinery and other industries.

Features

Adopt high precison sensors
LCD dot matrix display, , support Chinese and English operation, easy to read
Gas unit ppm and mg/m³can be switched quickly
One key to check the battery capacity and voltage.
One press to restore factory settings.
Alarm with ultra-high buzzer sound and light, high and low alarm values are settable
Rechargeable lithium polymer battery with high capacity enables long working time
With a alligator clip, easy to carry around
Rugged and durable housing, comfortable touch
Data storage function: Can record 100,000 data, and historical data can be viewed on the device (optional function).

Specification

Model	GD500-4GAS
Sampling Method	Diffusion
Detection Principle	Electrochemistry (CO, H2S, O2), Catalytic Combustion (LEL)
Gas	Carbon Monoxide (CO), Hydrogen Sulfide (H2S), Oxygen (O2), Combustible (LEL)
Range	CO: 0 to 1000ppm, H2S: 0 to 100ppm, O2: 0 to 30% VOL, EX: 0 to 100% LEL
Resolution	CO: 1ppm, H2S: 0.1ppm, O2: 0.1% VOL, EX: 1% LEL
Accuracy	≤±3%F.S.
Display	Monochrome dot matrix 128*128 LCD graphic display
Backlight	Backlight time is settable; the backlight will be auto-on when alarming.
Data Logging (Optional Function)	Storage capacity of over one hundred thousand sets. Interval times ranging from 10~3600 seconds are settable.
Alarms	Sound, light and vibration
Operation Language	Chinese/English
Gas Unit	Gas units ppm and mg/m³are switchable
Battery	3.7V rechargeable lithium battery with 2300mAh capacity, operating time is about 10-12h
Charger	Travel charger with USB. The typical charge time is 4-6 hours.
Explosion-proof Grade	Ⅱ 2G Ex ia Ⅱ CT4 Ga
Certification	CE, ATEX (Standard: EN IEC 60079-0:2018, EN 60079-1:2014)
Case Material	ABS+PC
Protection Grade	IP65
Operating Temperature	-20℃~50℃
Operating Humidity	0~90%RH (non-condensing)
Dimension	1318535mm
Weight	240g

Details

Tips: What does it mean, the gas units PPM, %LEL, %VOL in multi-gas detector's specification?

1. PPM
PPM refers to parts per million, a unit of gas volume concentration.
For solution: it means that there’s 1/1000 ml solute in the 1L aqueous solution, so its concentration is 1ppm.
For gas: it’s one of representation method of pollutant concentration in the ambient atmosphere (air).
2. %LEL
LEL refers to the lower explosive limit. When the combustible gas reaches 100%LEL, it’s easy to explode, and the explosion occurs as soon as contacting an electric spark. Therefore, 0-100%LEL generally refers to the range of combustible gas measurement. For example, hydrogen: 4%VOL=100%LEL, methane: 5%VOL=100%LEL.
3. %VOL
VOL refers to the volume ratio of target gas in per volume. It’s generally used for high concentration. 1%VOL is equal to 10000PPM, and generally it is for oxygen and combustible gases. For example, how much oxygen in a space.

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