38results about How to "Will not affect the detection effect" patented technology

The invention discloses a direct-reading dust concentration detector, and belongs to the technical field of environment-friendly safety facilities. The direct-reading dust concentration detector comprises an air extracting device and a sampling head, and is characterized in that: the detector also comprises a signal transmitting device, a signal receiving device, a dust intercepting device, a signal processing device carrying a display screen and a box body; the sampling head is fixed with the box body, extends out of the box body, and is connected with the signal receiving device through a gas path; the air extracting device, the signal transmitting device, the signal receiving device and the signal processing device are arranged in the box body; the signal receiving device is matched with the signal transmitting device and is positioned on the upper part of the signal transmitting device; the dust intercepting device is arranged between the signal transmitting device and the signal receiving device; the signal transmitting device and the signal receiving device are all eclectically connected with the signal processing device through circuits; and the signal transmitting device is connected with the air extracting device through a gas path. The direct-reading dust concentration detector has the advantages of not influencing detection effect due to vibration, really reflectingthe dust concentration in working environment in real time, and displaying the dust concentration on the display screen.

The invention discloses a cell proliferation and toxicity detection kit capable of improving detection sensitivity and stability, shortening reaction time, and avoiding leakage of detection liquid. The detection liquid is composed of WST-8, 2-methyl-1 , 4-naphthoquinone, sodium chloride aqueous solution, potassium chloride aqueous solution and calcium chloride aqueous solution, the molar ratio of described WST-8 and 2-methyl-1,4-naphthoquinone is 12~18:1, so The concentrations of the aqueous sodium chloride solution, the aqueous potassium chloride solution and the aqueous calcium chloride solution are 8.6g / L, 0.3 g / L, and 0.28g / L respectively; there is a reaction termination solution, and the reaction termination solution is 0.05 ~ 0.15 mol / L L HCl.

The invention discloses an industrial sewage detecting device. The device comprises a black-flowing pool fixedly mounted on a wall body, a sewage box fixedly mounted in the ground, and a communicationpipe, wherein a sewage feeding pipe is arranged at the upper end of the sewage box; the communication pipe comprises a vertical pipe arranged at the upper end, a washing pipe and a sewage guide pipe;the washing pipe and the sewage guide pipe are positioned at the lower end of the vertical pipe; the lower end of the washing pipe is connected with a purifying device; the sewage guide pipe is fixedly connected with the sewage feeding pipe; a main pipe extending to the ground and connected with the vertical pipe is arranged at the lower end of the back-flowing pool; a sealing ring is arranged atthe connecting part of the vertical pipe and the main pipe; an on-off valve positioned above the back-flowing pool is mounted in the wall body; the connecting part of the washing pipe and the sewageguide pipe is equipped with a separating plate through a rotating pin shaft by twisting; a water running groove is formed in the connecting part of the washing pipe and the vertical pipe; an air pipeconnected with a pressure applying device in the ground is arranged at the connecting part of the sewage feeding pipe and the vertical pipe.

The invention discloses a gas pressure regulation system with stable transmission of detection gas pressure. A stop valve is stable in performance, an internal tripping mechanism can avoid that the stop valve is wrongly closed due to influences of external impact, a reliable guarantee is provided for improvement on accuracy of detection gas pressure of the stop valve. For the stop valve, a condition that a stop valve signal pipe in a conventional stop valve is directly connected with a senor part is changed. According to the invention, the signal pipe is firmly and tightly connected with a pipe joint, even if the signal pipe and the pipe joint are used for a long term, the connecting part of the signal pipe and the pipe joint is prevented from cracking, falling off and the like, the condition that the connecting part is unstable is avoided. Therefore, gas pressure leakproofness is guaranteed, the detection effect of the sensor is not influenced, the improvement on performance and prolonging of the service life of the stop valve are facilitated. The stable transmission of detection gas pressure P2 can be guaranteed for the whole gas pressure regulation system; and normal operation of the whole gas pressure regulation system can be guaranteed.