HWP21-30S explosion limit tester Introduction
The HWP21-30S explosion limit tester is used to determine the upper and lower combustion concentrations of the flammable mixture of chemical vapors and air at temperature and atmospheric pressure. Inert gas can be used as a diluent during the test; (Special reminder: cannot be used For testing substances that are more oxidizing than air). HWP21-30S explosion limit tester complies with GB / T 21844-2008 Standard Test Methods for Flammability Concentration Limits of Compounds (Vapors and Gases) and ASTM E681-2009 Standard Test Methods for Explosive Limits of Chemicals (Steam and Gas) ". Features
1) Embedded processor, Windows CE operating system;
2) 8-inch LCD touch screen, which can display test status in real time;
3) Optional 5L, 12L round glass test containers, sufficient gas mixing and good compatibility;
4) With explosion pressure relief device (pressure relief door and spring compression device);
5) Equipped with heating and cooling equipment, circulating air heating or cooling, wide temperature control range and fast speed;
6) High-precision humidity measurement module can measure the humidity in the test container;
7) The pressure sensor, humidity sensor and thermocouple are combined to detect the sample status. The device also automatically monitors and records the test environment temperature, humidity and atmospheric pressure;
8) The imported high-frequency response solenoid valve is used to automatically control the gas sampling without manual participation, and the sampling accuracy is high;
9) Equipped with a high-precision pressure sensor to accurately control the gas partial pressure ratio concentration;
10) Magnetic stirring, remote ignition control, automatic ignition control, accurate ignition time;
11) Automatically clean container samples and combustion products by extracting internal gas;
12) Configure a bottle brush, and mix the fine sand + detergent with water to wash the adhered substances on the bottle wall;
13) The anti-fog double-layer tempered glass observation window protective door and the back pressure relief door are safe and reliable, and easy to observe;
14) Double interlock device protection, when the door is not closed or the temperature does not reach the target temperature, the ignition operation is invalid;
15) Configure a video surveillance system to record the test process. After the test is over, observe and judge the final result;
16) The test process is fully automated, supporting parameters setting, data storage, and viewing reports. Technical Parameters
1) Working environment: 5 ℃ ～ 30 ℃, <85% RH
2) Test object: gas or gasifiable solid, liquid
3) Temperature control range: -5 ℃ ～ 180 ℃
4) Temperature control accuracy: ± 1 ℃
5) Sample temperature measurement range: -50 ～ 300 ℃
6) Resolution of sample temperature measurement: 0.1 ℃
7) Sample temperature measurement accuracy: ± 1 ℃
8) Pressure measurement range: 0 ～ 110kPa
9) Pressure measurement accuracy: ± 0.1% FS
10) Ambient temperature measurement range: -10 ℃ ～ + 60 ℃
11) Ambient temperature measurement accuracy: ± 0.5 ℃
12) Ambient humidity measurement range: 5 ～ 95% RH
13) Ambient humidity measurement accuracy: ± 5.0% RH
14) Measuring range of ambient atmospheric pressure: 60 ～ 110kPa
15) Measurement accuracy of ambient atmospheric pressure: ± 0.5kPa
16) Work can reach vacuum degree: ≤1.33kPa
17) Leakage: ≤0.1kPa / min
18) Ignition spark gap: 6.4mm
19) Ignition arc voltage / current: 15kV / 30mA
20) Ignition duration: 0.2s ～ 0.4s
21) 5L glass container size: diameter 222mm, height 305mm
22) 12L glass container size: about 295mm in diameter and 378mm
23) Agitator speed: ≥400rpm
Introduction
The HWP21-30S explosion limit tester is used to determine the upper and lower combustion concentrations of the flammable mixture of chemical vapors and air at temperature and atmospheric pressure. Inert gas can be used as a diluent during the test; (Special reminder: cannot be used For testing substances that are more oxidizing than air). HWP21-30S explosion limit tester complies with GB / T 21844-2008 Standard Test Methods for Flammability Concentration Limits of Compounds (Vapors and Gases) and ASTM E681-2009 Standard Test Methods for Explosive Limits of Chemicals (Steam and Gas) ".
