Gas Explosion Limit Tester，UL9540A

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Introduction

The explosion limit tester can realize the explosion limit measurement of combustible gas or volatile solid or liquid under high temperature environment. At the same time, it can test the maximum explosion pressure when combustible gas explodes. The explosion limit measured under high temperature and high pressure conditions has great reference value for chemical process design and risk assessment and control;

The test instrument meets the requirements of UL9540A to test the lower limit of combustion and the maximum explosion pressure of the gas released by battery thermal failure. At the same time, it can test the upper and lower concentration limits of flammable gases or vapors that burn and explode, as well as the explosion pressure, explosion index, etc. The test results can be used to characterize the sample explosion risk, explosion severity, and evaluate the degree of explosion damage, etc.

Standard

UL9540A

Function and technical index

1.Use 20L stainless steel explosiveball;

2.The use of wrapped heaters can realize rapid temperature control and adjustment in the explosion field, and the heating rate is morestable.

3.Equipped with imported high-precision pressure sensors, the mixed gas is configured by the Dalton partial pressure method to accurately control the gasconcentration;

4.Adopt computer automatic high-voltage automatic electric spark ignitionmethod;

5.Equipped with OMEGA thermocouple imported from the United States, with a temperature accuracy of±0.5℃

6.Equippedwithavacuumpumpforvacuumingthecabin,andequippedwithanimportedbrand vacuumgauge.

7.Equippedwithimportedsolenoidvalveforgasdistributiontorealizeautomaticgasdistribution and automaticmeasurement.

8.The final combustion and explosion state can be judged by pressurechanges;

9.Equipped with magnetic stirring function, which can realize the full mixing of gas in thecabin.

10.Usingspecialpressuresensorforexplosion,theworkingtemperatureishigh,stable,andthe accuracy isbetter;

11.Computer automatic control system. Implement output temperature curve, pressure curve, and automatically calculate the lower limit of gas combustion, maximum explosion pressure, explosion index and other testparameters.

12. automatic control, automatic vacuum, automatic gas distribution, automatic stirring; 1.13. stainless steel container pressure: 2.0Mpa, burst valve pressure: 2.0Mpa;

13. Explosion pressure sensor: 2.0Mpa, linearity is ±1.0%FS

14.Pressure recording sampling rate: sampling frequency10.0kHz;

15.High-voltage spark ignition energy: 15kV, 30mA, ignition electrode gap:6.4mm.

Technical parameter

1)Working environment: (-5～45)℃,<95%RH

2)Test object: gas or vaporizable solid,liquid

3)The temperature control range of the cabinet:(-10～250)℃

4)Temperature control accuracy:±1℃

5)Measuring range of sample temperature:(-50～300)℃

6)Resolution of sample temperature measurement:0.1℃

7)Accuracy of sample temperature measurement:±0.5℃

8)Pressure measurement range:(0～110)kPa

9)Pressure measurement accuracy:±0.1%FS

10)Work can reach vacuum degree:≤1.33kPa

11)Leakage:≤0.1kPa/min

12)Ignition spark gap:6.4mm

13)Ignition arc voltage/current:15kV/30mA

14)Ignition duration:(0～1)s

20L stainless steelcontainer

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