Sheng Changheng far pump gas detector Hefei

Pumping underground pipeline leak detector TN-4 + can be on the ground to detect underground pipeline leak location directly underground pipeline leak detection is the best instrument. The instrument is widely used in urban gas, petroleum, petrochemical, oil depots, gas stations, oil and gas and other sectors of gas transmission and distribution pipelines and pipeline maintenance and safety checks rescue and other leaks. [Features] high sensitivity, good selectivity, no drilling, direct ground to detect buried pipelines and leaks; high-capacity lithium battery, fast smart charger, no manual control, use of cost savings; the use of the world's most advanced sensor and pump anti-interference, low temperature and high stability; alarm sounds change with the gas concentration changes, operators do not need to observe the display section, improve work efficiency. Comes with suction pump can be tens of meters from the outer gas inhalation instrument measured power or need to display, batteries, sensors, sound and light alarm function self-test Superior audio sound alarm can support three or four kinds of Gas Detection Test principle and method of work] When air containing combustible gas through the pump to the sensor detects the element resistance increases rapidly (proportional to the concentration of the size of its resistance changes with gas), while the output of a voltage signal after amplification circuit to the display section, and an alarm signal. The main technical indicators] to detect gas: for natural gas, liquefied petroleum gas; artificial gas. Detecting the type of gas: combustible gas, carbon monoxide, oxygen, hydrogen sulfide Sensitivity: 0 ~ when 1000ppm, better than 50ppm; at 1 ~ 100% LEL, better than 1% LEL detection range: 0 ~ 1000ppm, 1-100% LEL (automatic) Technical parameters Detection of gas range Accuracy Minimum reading response time of oxygen (O2) 0-30% Vol <± 5% (FS) 0.1% Vol ≤15 seconds methane (CH4) 0-100% VOL <± 5% (FS ) 1% VOL ≤5 seconds of carbon monoxide (CO) 0-999ppm <± 5% (FS) 1ppm ≤25 seconds hydrogen sulfide (H2S) 0-100.0ppm <± 5% (FS) 1ppm ≤30 seconds sulfur dioxide (SO2) 0 -100ppm <± 5% (FS) 0.1ppm ≤30 seconds of nitric oxide (NO) 0-250ppm <± 5% (FS) 1ppm ≤60 seconds nitrogen dioxide (NO2) 0-20ppm <± 5% (FS) 0.1ppm ≤25 seconds chlorine (CL2) 0-20ppm <± 5% (FS) 0.1ppm ≤30 seconds ammonia (NH3) 0-100ppm <± 5% (FS) 1ppm ≤50 seconds hydrogen (H2) 0-1000ppm <± 5% (FS) 1ppm ≤60 seconds hydrogen cyanide (HCN) 0-50ppm <± 5% (FS) 0.1ppm ≤200 seconds hydrogen chloride (HCL) 0-20ppm <± 5% (FS) 0.1ppm ≤60 second phosphine (PH3) 0-5-1000 ppm <± 5% (FS) 0.01 / 1ppm ≤25 seconds flammable gas (Ex) 0-100% LEL <± 5% (FS) 1% LEL ≤15 seconds Sensor : oxygen and toxic gases electrochemical type, flammable gas catalytic combustion sensor lifetime: 24 months Battery: 7.4V lithium-ion rechargeable battery Battery life: 15 hours of continuous work (flammable gas) for about 200 hours of continuous work (except flammable Gas) Display: Large LCD display Alarm: sound and light alarm Direct reading: instantaneous, peak, battery voltage, TWA, STEL Ex mark: Ex ibdIICT3 Protection class: IP45 Operating temperature: -10∽40 ℃ Operating Humidity: 5- 90% RH Dimensions: 180mm × 80mm × 124mm Weight: about 4Kg (with aluminum plate box)