technical support
current news
current news
key characteristics
● glass valve automatic actuator, both air tightness and efficiency of the global innovation;
● integrated control program, easy to operate, the accuracy of scientific level;
● the test is fast and efficient, and the single sampling only takes 10min;
● excellent compatibility, through the replacement of different reactors to achieve photochemistry, electrochemistry, pec photochemistry and other reactions of micro gas detection.
application field ▲ especially applicable ● more applicable can be used
▲ photocatalytic decomposition of water to hydrogen/oxygen ▲ photocatalytic total decomposition of water ▲ photocatalytic co2 reduction ▲ electrochemistry
▲ quantum efficiency measurement of photocatalysis ▲ pec photochemistry ▲ photothermal catalysis (negative pressure atmospheric system)
○ photocatalytic degradation of gas pollutants (such as vocs, formaldehyde, nitrogen oxides, sulfur oxides, etc.)
typical customers
● fuzhou university
● shenyang institute of metals, chinese academy of sciences
● dalian institute of chemistry and physics, chinese academy of sciences
technical parameters
low vacuum
absolute vacuum degree: ≤ 1.5kpa, absolute pressure indicating value, to avoid large numerical fluctuations caused by changes in atmospheric pressure, temperature and humidity of the differential pressure meter;
low air tightness
leakage rate: ≤5×10-5 pa•l/s, 24h oxygen leakage ≤1 lighter mol;
multi-pass composite valve, reduce the volume of the system, the main valve sensor automatically prompt the replacement of vacuum grease;
valve process: all valves are made of high borosilicate glass (no metal parts), and the valve plug and valve sleeve are made of cross-grinding process.
● cycle efficiency
high efficiency plunger pump can provide excellent cyclic driving force in negative pressure (hydrogen production experiment with photodissociation water), micro negative pressure and normal pressure (carbon dioxide reduction experiment). air displacement: 6ml/ time;
volume: the volume of the circulating pipeline of the system is about 65ml (excluding bulb cooling and reactor), and the system has strong enrichment capacity.
inner diameter: circulating pipeline, including quantitative ring, the narrowest pipeline is the inner diameter of 3mm, with low gas resistance (eliminate the low gas circulation efficiency caused by the extremely small inner diameter of pipeline);
the circulation system has a one-way valve structure to realize the one-way circulation of all pipelines (including the part of the reactor).
● linearity and repeatability
linear regression of the standard curve: r2>0.9995 when the hydrogen content in the system ranges from 100ul to 10ml. the same concentration is sampled three times with rsd≤3%.
software and control unit
4.5-inch tff color liquid crystal display with control program is integrated into the main body;
at the same time support online automatic control and manual independent control two working modes;
under the automatic control mode, the valve position can be displayed in real time, with the function of safety protection and warning.
built-in instrument method, only need to set the sampling period and sampling times when using, simple operation;
it has a two-level encryption debugging program, which is used for equipment debugging, internal method setting and flexible use by senior users.
● other structures
the quantitative ring is made of high borosilicate glass and located on the multi-pass sampling valve (non-chromatographic sampling valve);
the metal protective box has a certain protective effect on the glass assembly of the system, radiation and possible reaction gas leakage, and has multiple sampler/sampler with independent intellectual property rights;
vacuum silica gel hose, good aging resistance, reduce the vibration of the system, reduce the impact of vacuum pump work on the system;
multi-function quantitative buffering cylinder unit; (suitable for system volume calibration and storage of reactive gas such as carbon dioxide)
the input and output parts have photoelectric isolation and strong anti-interference ability.
portable installation-free system; (no need to provide oxygen and liquefied gas for on-site open flame connection).
