Oxygen sensing technology is a modern high-tech detection method integrating biotechnology and information technology. It measures the quality of seeds by measuring the oxygen consumption during seed germination under closed conditions, generally before seed germination, ie radicle The seed coat can be finished before it reaches out, which is direct, fast, real and reliable. It has epoch-making significance in the basic research and commercial application of seed quality detection. Seed germination must be accompanied by vigorous respiratory metabolism. Seed storage materials (mainly starch, protein, fat) must be oxidatively decomposed under aerobic conditions, converted into anabolic intermediates and provide the energy needed for physiological activities. It can be seen that respiration is the main indicator and concentrated expression of the life activities of the seeds. The strength of respiration is directly related to the level of seed vigor.
The oxygen sensor was developed in the Netherlands based on the principle of fluorescence quenching to identify the viability level of the seed by measuring the oxygen consumption during seed germination. Currently, there are two types of oxygen sensors. One is an automatic oxygen sensor detector, which can measure the oxygen concentration during seed germination in real time, and is suitable for the activity detection of small and medium seeds or seeds with low oxygen consumption. The other is a manual oxygen sensing detector that requires manual measurement of oxygen concentration and is suitable for the viability detection of large seeds or seeds with high oxygen consumption.
We measured the oxygen consumption of more than 100 different types of rice seed samples by automatic oxygen sensor. The correlation between the oxygen sensor measurement index and its vitality index was analyzed, and the best indicator of rice seed vigor determination was determined. The results show that there are differences in the detection time of rice types. Hybrid japonica rice, conventional japonica rice, hybrid japonica rice, and conventional japonica rice seeds only need 60h, 90h, 140h, 160h to complete the vigor determination, which greatly shortens the detection time. The detection time is reduced by more than half compared to the traditional viability assay based on the germination test.
In addition to establishing different types of rice seed oxygen sensor measurement standards and detection models, we also applied this technology to the vigor detection of wheat, corn, vegetables and forest seeds, and achieved good application results.
Explosion Proof Quick Plug Connector
BX3 series of explosion-proof socket connector is applicable to the petroleum, machinery, chemical, mining, drilling, wharf, construction, can provide the power for the electric motor, electric welding machine, pump, compressor, outdoor lighting equipment.
Product design,compact structure, easy installation, high temperature, shock, anti-aging, has good insulating properties and mechanical properties, products built with trapezoidal hole rubber seal and clamp device can be used for different cable diameters, not afraid of the rain, in oil exploration, drilling, well field standardized electrical lines have been widely applied. Products meet the national standard GB3836-201 "electrical apparatus fo explosive gas atmosphere", after the inspection of the national explosion-proof electrical quality inspection, certificate of proof, explosion-proof marks CNEx19.1354X, EXnA II CT4Gc.
The product consists of two parts, plugs and sockets, which plug is removable (YT), there are three forms of socket options: 1,fixed (GZ), 2, straight-through (YZ), 3, hanging (GYZ). Connection plug and socket bayonet quick connect, contact with the wire ends to tighten the screws. Shell is made of PA66 insulation corrosion material, silver-plated contacts, access to reliable, easy wiring, sealing and insulation, waterproof, dustproof, shockproof and so on.
Main Technical Data
Operating temperature: -20 ℃ 60 ℃
Rated voltage: 0 - 500V Frequency: 50Hz - 60Hz
Rated current: 1OA/16A/25A/32A/40A/60A/63A/1OOA/125A/150A/200A/250A/300A/400A/500A/600A/630A
Withstand voltage: 1800VAC
Insulation resistance: > 100MO
Contact resistance :lower than 0.5 MO
Temperature rise: lower than 65K
Mechanical life: 500 times
Contact Poles: 3P/3P+E/3P+N+E
Housing protection: IP67
Recommend to use cables with suitabe specifications:
Product Selection Parameters:
Explosion Proof Plug Socket Connectors
Ningbo Bond Industrial Electric Co., Ltd. , https://www.bondelectro.com