4results about How to "Maintain detection accuracy" patented technology

The utility model provides a kind of radioactive contamination dynamic boundary prediction device, belong to nuclear science and technology field, to solve the detection of direct use Geiger counter, leading to the inaccuracy of the detection result of Geiger counter, influence the accuracy of radioactive contamination boundary prediction problem, including Geiger counter main part, control knob, detection holding frame, detection head, dustproof driving mechanism and operation warning mechanism;The control knob is rotationally connected above the Geiger counter main part;The detection holding frame is fixedly connected above the Geiger counter main part;The detection head is fixedly connected above the detection holding frame;The dust cover is rotationally connected at the front end of detection holding frame, and the dust cover is arranged at the front end of detection head;The dustproof driving mechanism is arranged outside the detection holding frame;The operation warning mechanism is arranged above the Geiger counter main part, standardizes the operation procedure of worker, guarantees the accuracy of radioactive contamination detection result.

This invention discloses a lifting device for seed processing and transportation. It utilizes multiple dust removal modules instead of a single dust removal device in existing technologies, resulting in a smaller size and less noise. Furthermore, in the event of a single dust removal module failure, the other modules can assist in controlling dust concentration without requiring the main body of the elevator to be shut down for maintenance, thus increasing the safety of the elevator and facilitating the maintenance of the dust removal module's detection accuracy and efficiency. The invention also incorporates buffer steps and buffer supports, using the impact between the buffer steps and buffer supports to control the speed of the sliding inner frame, preventing it from sliding directly out of the fixed outer frame and thus reducing the risk of damage to the inner frame and dust collection unit. Additionally, pressure relief holes and sealing bolts provide new pressure relief locations for the dust removal modules, further enhancing the safety of the elevator.

This invention discloses an online CO concentration detector and analyzer for use in the field of detection and analysis instruments. It comprises a main body, a pretreatment cylinder, and a modular filter assembly. The pretreatment cylinder contains a flow guide cover, a sleeve, and a filter element, achieving fluid diversion and filtration through a double-layer perforated group. The bottom vent cover is quickly removable, and the built-in filter box allows for flexible switching between air and liquid filter components, adapting to various forms of fluids, including gaseous and liquid states. The sampling component employs an electrically driven valve tube structure. This solution can detect CO concentration in a gaseous environment and can also achieve online monitoring of CO concentration in water by replacing the liquid filter assembly. It supports open environment detection and can also directly connect to an external test pipeline that has undergone pre-filtration to achieve direct detection of CO concentration within the pipeline. When the impurity content of the test liquid is low and continuous online monitoring of large-flow water is required, the replacement and maintenance steps of the filter assembly can be omitted, and detection can be completed directly.

The application relates to the field of measuring instruments, and discloses a device for measuring the volume of a gravel pit hole. In the application, a fixing base is welded to the upper surface of a bottom plate, a support framework is arranged on the side surface of the fixing base, a soft rubber pad layer is movably connected to the upper and lower surfaces of the support framework on the side surface of the fixing base, a support frame is movably connected to the upper surface of the fixing base, an inlet cover is welded to the side surface of the support frame, and an exhaust valve cap is movably connected to the outer surface of the inlet cover. The bottom plate is placed on a gravel pit hole, a reference hole is arranged to correspond to the gravel pit hole, the soft rubber pad layer is attached to the upper and lower surfaces of the support framework, the whole is inserted into the fixing base, the support frame is also inserted into the fixing base, air is filled through the air inlet interface, after the gravel pit hole is filled, the exhaust valve cap is lifted upward, the time is recorded through the inflation mechanism, and the volume of the corresponding pit hole is measured through calculation.