Gas detection:	tolueneC7H8Electrochemical sensor, service life3High precision, photoionization PID sensor can also be selected.
Extended gas:	1-4Various types of sensors can be combined with different gases. For specific sensor parameters, please refer to the relevant gas detector
Detection method:	Pump suction, built-in powerful vacuum pump, flow rate:2L/minExtraction distance5-8riceCan work in a micro negative pressure environment
Measurement range:	0-10ppm、20ppm、50ppm、100ppmselect
resolving power:	0.01ppm、0.1ppm
Detection accuracy:	≤±2%(Actual concentration, higher accuracy depends on the specific sensor)
Repeatability:	≤±1%	Response time:	≤30Second（T90）
Linear error:	≤±1%	Recovery time:	≤40second
Detection principle:	electrochemical sensor	Zero drift:	≤±1%（F.S/Year)
Display mode:	LCDLCD backlit display	Alarm method:	Sound and light level 2 alarm,≤90decibel
Detection method:	Pump suction, automatic suction real-time detection, more accurate and fast measurement results (the size of the sampling pump suction function can be set by oneself)
Menu display:	Chinese or English operation menu
Automatic diagnosis:	System check: Battery level, display, sensor, hardware malfunction
Air pump mode:	Standard mode and vacuum mode can be set; Can work in a micro negative pressure environment without affecting the sensor
Protection level:	IP45	Working temperature:	-40℃～+70℃
Explosion proof grade:	Exia II CT6	Working humidity:	≤95%RHNo condensation
Size:	180mm(Long)×80mm(Width)×124mm(Thick)	working pressure:	-20Kpa～100Kpa
Weight:	make an appointment1 Kg	Working power supply:	7．4VLithium ion rechargeable battery, ultra long standby time
Related accessories:	Special instrument aluminum box, instruction manual, certificate of conformity, charger, sampling handle, sampling hose.

The PN-3500-C7H8 toluene analyzer can be used as a composite gas analyzer, suitable for detecting the concentration of various mixed gases in various industrial and special environments. The instrument adopts imported sensor and microcontroller technology, with fast response speed, high measurement accuracy, good stability and repeatability, and the overall performance is at the leading level in China. It is an inherently safe device for continuous detection of toluene concentration, with a large capacity nickel hydrogen rechargeable battery and ultra long standby inside; Surface mounted packaging, reliable and aesthetically pleasing; Digital LCD backlit LCD screen display, clear and intuitive; Equipped with a two-level sound and light alarm function, it can provide timely, accurate, and intuitive alarm prompts for preset alarm concentrations; Fashionable appearance design, beautiful, good feel, and durable.
In summary, the PN-3500-C7H8 toluene analyzer is a flexible detector for detecting a single gas or 1-4 different gases. It can be equipped with infrared sensors, electrochemical sensors, photoionization sensors, and catalytic combustion sensors. It has the advantages of fast response speed, good stability, high sensitivity, small size, light weight, and easy portability. At the same time, it is equipped with a built-in gas sampling pump for more accurate and fast measurement results. Widely used in fields such as petrochemicals, industrial production, environmental monitoring of flue gas and exhaust, sewage treatment, biopharmaceuticals, home environmental protection, school laboratories, etc.
*The whole machine has a small volume, light weight, waterproof, dustproof, explosion-proof, and shockproof design
*Safety reminder: Regular flashing lights and sound prompts
*Using high-capacity lithium rechargeable batteries, it can work continuously for a long time
*Digital LCD backlight display, sound and light, vibration alarm function
*The sensor adopts imported original sensors with world-class level
*The upper and lower limit alarm values can be set arbitrarily, and it comes with zero and target point calibration functions. The outstanding audio sound alarm ensures that dangerous gases can be detected even in very unfavorable working environments and timely prompts operators to prevent them
*Large screen display of numbers, characters, instantaneous values, peak values, and minimum values
*The shell is made of special materials and processes, which are not easy to wear and tear, easy to clean, and bright as new after long-term use

*Gas, petrochemicals, metallurgy.

*Environmental protection and fire safety testing.

*Dangerous chemical gas detection.

*Municipal, school, hospital, and factory environmental testing.