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 Unique multi state color change technology          

 Unique "watchdog" fault diagnosis technology          
 Unique sensitivity of intelligent compensation technology          
 Full range accuracy of ±0.1%FS          
 Explosion-proof, anti surge, anti lightning, the installation is more convenient and safer to use          

 Using high-energy magnetic regulating transmitter, no need open cover on the site or use the remote control          
 Simultaneously or respectively output RS485, 4-20mA and switch signal          
 Online spot change bus address code, 4-20mA signal output calibration

 Installation is simple, easy to use, stable performance. Detector can be chose connected according to the technical requirements to PLC, DCS system, alarm controller, fire control center.

 "Watchdog" technology of fault alarm.
 Design of cold resistance,suitable for winter low temperature area.
 Explosion-proof,anti surge,induction thunder,installation more convenient,safer to use.
 Adopt high-powered magnet adjust transmitter,need not open or use the remote control at the scene 4-20 ma,24 VDC/0.5 A switch signal output.  
 Site online calibration 4-20 ma signal output...

 Notable features:the combination of flexible,easy installation,alarm clear,cost-effective.

 Measuring range (Range):0-100% LEL.

 Controller Power:input AC220V±10%,50/60HZ;output DC24V;

 Power consumption:<4W/channel.

 Alarm response time:<20 seconds.

 Fuse rating:1A.

 Advanced and high capacity of the main control chip:（ARM Cortex™-M3）Using (ARM Cortex ™ - M3) 32-bit high speed operation of industrial control,12 AD conversion chip,higher speed and precision.Only when necessary,a TF card,can be in the manufacturer's website to download the latest system program to upgrade equipment, upgrade the operation is simple.
 The powerful,rich control performance：2.8 inch TFT color touch-screen,full Chinese menu operation；
 Article 7500 of the start-up,shutdown and low alarm,high alarm,fault alarm record.
 After has the wrong operation,the function of quick restore factory Settings.
 low alarm,high alarm,beyond the range alarm,fault,main/standby switch alarm is set by different background color and sound.
 Through internal alarm controller menu Settings,select display testing gas type,range and units.As long as the change set,an alarm controller can connect multiple types 4-20 mA output signal of the transmitter.
 With a warning, alarm,fault three alarm switch output, and can set the alarm switch at the scene of normally open,normally closed,or the output  the pulse.
 Boot self-checking equipment operation condition,can the independent judgment and show the cause of the gas alarm device failure in Chinese. 

12V lithium battery section          
Capacity:(5.2AH, 6.8AH, 10.8AH) 12V          
Discharge: built-in 12V/1A battery charger, 12V output boost to 24V          
It can be connected: SFD-860 series, SFD-300 series

High degree of intensification, flexible assembly methods. Each liquid crystal can be realistic four channel detector working state, with a small size, intuitive and clear, easy to operate, the advantages of high accuracy.         
Multifunction, high cost. The alarm controller can receive the 4-20mA standard signal or the RS485 bus signal respectively. Each wire alarm can output a set of passive, a normally opened switch signal and RS485 bus signal. Can replace the PLC (programmable logic controller) to use,effectively reduce the user's equipment procurement and construction costs.       
Alarm controller and detector using the bus connection, bus connection mode has both advantages of material saving and labor, time and cost, and technical advantages of numerical multiple real-time display concentration detector.          
Alarm display clear, according to the working state of the equipment changes the background color. Green, pink, red, yellow four colors represent the norm, low alarm, high alarm, fault.

Using (ARM Cortex -M3) 32 bit high speed industrial control, 12 bit AD conversion chip, faster and more accurate. 

2.8 inch true color display, touch screen control, full Chinese menu, friendly UI design experience.

Has 1000 alarm time records, alarm concentration records,1000 fault and trouble shooting time records , 1000 boot and shutdown time records. Detector capable of shielding failure. The zero point and sensitivity calibration of the intelligent detector can be carried out remotely. The measurement range, unit and sensitivity of each detector can be set up. Built in 5.2AH/12V standby power supply.

Using (ARM Cortex -M3) 32 bit high speed industrial control, 12 bit AD conversion chip, faster and more accurate.          
7 inch true color display, true touch screen control , full Chinese menu, friendly UI design experience.          
Having record and query function of alarm, fault isolation detector, the on / off time.          
Remote zero and sensitivity calibration of the detector; corresponding various detectors for measuring range, sensitivity and unit settings; can be equipped with a variety of spare batteries and power supply; the 30 day duration record curve.          

The alarm controller for large capacity, multifunct platform. According to the user needs, are set to accept the 4-20mA standard signal or RS485 bus signal alarm controller.

Notable features: stable, long life, bright LED light-emitting diodes, visible under a variety of environments, small size, light weight, easy to install, stainless steel shell, waterproof, shockproof, corrosion-resistant.

Features: compared to photoelectric dust detector and DC electrostatic dust detector, the products with high cost-effective, easy to use, maintenance free characteristics; there are a variety of models to choose from, online measurement.

Measuring media: Solid particles in the air.
Dust Diameter: 0.3UM or greater.
Measuring range: 0.1mg / m3-1000mg / m3.
Measuring principle: AC induction.
Damping time: 0 seconds -90 minutes.
Output signal: 2 alarm signal output, 4-20mA current output
LED Display: Optional.
Communication: RS485 / RF Radio Frequency (optional).
Ambient temperature: -20-60 ℃.
Housing: aluminum, stainless steel.
Supply voltage: 12VDC-24VDC.
Cable: 5M.
Weight: 3KG.
Related equipment: DCS industrial control systems, SFD-300II Series, SFD-860 series alarm controller.

Notable features: unique design, stable performance, convenient and practical, cost-effective.
Detection of gas: General flammable gas, ammonia, fluoride gas, hydrogen fluoride, hydrogen, etc..
Sensor detection principle: electrochemical, infrared, photoelectric ions, metal oxides, catalytic combustion.
Measurement range: 0-100%LEL; 0-10000PPM; 0-100%VOL.

SFD-2016 direct reading dust concentration measuring instrument is based on the method of infrared absorption principle, an instrument for measuring the concentration of floating dust in air. According to the MT163-1997 "direct reading dust concentration measuring instrument general technical conditions" and the GB3836.4-2010 standard ExibI grade (intrinsic safety type) design of dust concentration measurement instrument of explosion-proof, the instrument can accurately reflect the pollution status of dust relatedworkers inhalation of respirable dust and dust in the workplaces of different quality, and provide reliable data for the accurate evaluation of health status of workplace, the instrument is suitable for the coal mine and containing gas explosion hazard in workplace.          

The instrument has the characteristics of fast response, high precision, convenient installation and flexible combination, which can be used in connection with PLC, DCS system, alarm controller and fire control center according to the situation.

Notable features: unique design, stable performance, convenient and practical, cost-effective.
Detection of gas: General flammable gas, ammonia, fluoride gas, hydrogen fluoride, hydrogen, etc..
Sensor detection principle: electrochemical, infrared, photoelectric ions, metal oxides, catalytic combustion.
Measurement range: 0-100%LEL; 0-10000PPM; 0-100%VOL.