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JHB4 Portable Infrared Combustible gas detector

JHB4 Portable Infrared Combustible gas detector

JHB4 Portable Infrared Combustible gas detector

Product Details:

Place of Origin: China
Brand Name: TOPSKY
Certification: Coal Mine Safety Certificate Explosion-proof Certificate
Model Number: JHB4

Payment & Shipping Terms:

Minimum Order Quantity: 1
Packaging Details: protective box
Delivery Time: 3 days
Payment Terms: TT / Paypal
Supply Ability: 500 pieces per month
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Detailed Product Description

JHB4 Portable Infrared Combustible gas detector



Qualifications:  Coal Mine Safety Certificate  

Explosion-proof   Certificate

Inspection Certification  


Model Number: JHB4


Infrared Combustible Gas Detector is an intrinsically safe and explosion-proof instrument and is designed to deter Combustible Gas concentration in ambient air continuously and rapidly.

It adopts NDIR infrared technology with high accuracy and fast response. The measuring range of Combustible (CH4) gas is 0-5.0% or 0-100%vol.

Despite its compact size, the Infrared Combustible Gas Detector includes features usually found only in larger multi-gas monitors including a large, OLED display, internal audible/visual alarms and simple push-button operation.

The monitor continuously displays ambient combustible gas readings and will alert the user when gas concentrations exceed the preset low or high levels. Added features include adjustable alarm setpoints, calibration gas values, and choice of text-only display selected by the user through a simple, push-button routine. Infrared Combustible Gas Detector also has a peak/hold feature to show the highest reading during a shift and includes a special flip-cap calibration adapter for quick and simple calibration. It is covered by a two-year warranty from the date of manufacture.

 It is used at the underground coal mine and mine safety inspection mainly. Certainly, it is also applied to fire fighting, confined space, chemical industry, oil and all kinds of environment that needed to measure the combustible gas.




Sensor lifetime

10 years, NDIR infrared sensor

2-year warranty

Lowers the overall cost of ownership by providing a full 24 months of warranty coverage.


High brightness backlight display


The user's own can calibrate the detector by operating on it

Weight of 102g

Light weight and compact size, can be worn on the belt, shirt pocket, coveralls or hard-hat.

Flip-cap calibration feature

Ifrared Combustible Gas Detector has a unique, built in calibration adapter to make calibration easy and eliminates the need to search for a calibration cup.

OLED display

Provides continuous display of the actual concentration of combustible gas in the ambient environment as well as remaining battery life.

Adjustable low and high alarm setpoints

The user can configure single Ifrared Combustible Gas Detector to suit a number of different applications.

High visibility case

From a distance, it’s color makes it easy for Safety Professionals to verify that workers are protected.

5 second delay shut-off protection

Ifrared Combustible Gas Detector cannot be accidentally shut off since the on/off button must be depressed for five continuous seconds.


Technical specification:


NDIR infrared

Sensor lifetime

10 years





Low 1.0%vol / High 3.0%vol

Low 5%vol / High 10%vol




Power Source:

1500mAH  lithium battery ;rechargeable battery

Temperature Range:

-4°F to 122°F (-20°C to 50°C) typical  

Humidity Range:

0 to 95% RH typical


Adjustable low and high alarm setpoints

Explosion protection

Exibd I

Protection grade








Battery, Carrying case and Operate guidebook


JHB4 Portable Infrared Combustible gas detector

JHB4 Portable Infrared Combustible gas detector

JHB4 Portable Infrared Combustible gas detector

JHB4 Portable Infrared Combustible gas detector

Contact Details
Beijing Topsky Automatic Technology Co., Ltd

Contact Person: Ms. Tina

Tel: 86-10-57621296

Fax: 86-10-57621266

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