First, the product description 
 GRI-8101 Fixed (with display) carbon monoxide gas detector probe is the company using the world's most advanced electrochemical sensor with the company for many years of experience developing gas detectors developed new products, is a way to continuously measure the concentration of carbon monoxide the instrumentation. This product is suitable for environmental monitoring, industrial production, chemical carbon monoxide place to have a guarantee rural workers from abuse and safety equipment from damage. 
 GRI-8101 using the intrinsically safe circuit design, with large screen LCD display 
 Show, live online can observe the target gas concentration; RS485 digital signal output, 
 And PC or PC to communicate; all the way 3-wire 4-20mA current output, 
 The signal is proportional to the measured gas concentrations. With two level alarm output for 
 High / low alarm environment, sound / light alarm; with soft / hard two calibration methods, calibration can be completed without opening the lid. 
 Second, product characteristics: 
 ● site shows concentration ,4-20 mA analog output and RS-485 digital signal 
 ● Explosion-proof enclosure of electrochemical sensors, long life, low temperature, anti-sulfide, silane gas poisoning. 
 ● Non-contact infrared remote control is accomplished zero and gain calibration. 
 ● highlighting two special red LED flashes, respectively, suggesting that high / low alarm, sound alarm sound an alarm, inform the staff on site the first time, two relays are energized, the drive control of external devices other work. 
 ● die-cast stainless steel housing for offshore platforms, as well as high temperature, humidity and other harsh environments. 
 ● Good sealing, corrosion, explosion-proof and anti-EMI, RFI capabilities. 
 Third, the Application: 
 ? Water treatment plants, pharmaceutical, food industry? Well? Refinery and petrochemical plant? Steel mills, power plants, gas? Mine? Chemical plant, the raw material warehouse 
 Fourth, the main technical parameters 

 Product Name fixed (electrochemical) sensor gas detector alarm name Menbrapor (electrochemical sensors) 
 Model GRI-8101 sensor models Menbrapor C Series 
 9-24VDC input power CO detected objects 
 Consumption current 20-200mA electrochemical detection principle 
 Display 4-digit LCD display detection method Diffused 
 Alarm 2 sound and light alarm detection range 0-1000ppm 
 ≤ ± 10% error alarm alarm setting accuracy ± 3% FS 
 Operating temperature -10 ℃ -40 ℃ (special temperature by reservation) resolution of 1ppm 
 Operating Humidity 0-85% RH (no freezing) warm-up time 2 Min 
 Pressure range of 860-1060hpa Response time T90 <40S 
 Signal output 4-20mA or RS485 life of 3 years (in air) 
 Contact capacity 1A/120VAC or 1A/24VDC Repeatability ≤ ± 2% FS 
 Dimensions MAX: 155 * 135 * 120mm zero drift ≤ ± 2% FS/6h 
 Whole weight of about 2000g Span drift ≤ ± 5% FS/6h