47results about How to "Easy to carry on site" patented technology

Provided is a multi-range field full-automatic pressure and electric signal calibrating instrument, comprising: control components such as a shell, a power switch, multiple-interfaces, a display, a keyboard, and a gas pressure generating unit, a power supply unit, a pressure detecting unit, a gas pressure control unit and an electric signal detecting unit; the pressure output end of the pressure control unit is in parallel connection with pressure joints which are used for installing multiple pressure standard meters and detected meters with different ranges; the pressure control unit is in signal connection with the pressure standard meters; the electric signal detecting unit is in signal connection with the pressure control unit and the detected meters; the power supply unit can supply power by batteries. The calibrating instrument does not need to be externally connected with a gas cylinder and an alternating current power supply and can automatically generate a gas pressure and generate an accurate standard pressure; the design of the multi-range pressure standard meter can be suitable for various detected meters; the double detection and calibration for pressure and electric signals can be implemented; the weight and volume of the instrument are small; and the multi-range field full-automatic pressure and electric signal calibrating instrument is convenient to carry in the field and can carry out automatic calibration on various field pressure instruments.

The invention discloses an on-site full-automatic pressure calibrator. The on-site full-automatic pressure calibrator comprises a shell, a power supply switch, a plurality of interfaces, a display, control components such as a keyboard and the like, a gas pressure generation unit, a power supply unit, a pressure detection unit, and a gas pressure control unit, wherein the gas pressure generation unit is a miniature gas pressure pump which is communicated with atmosphere; a pressure output pipeline is communicated with the gas pressure control unit; the pressure output ends of the pressure control unit are communicated in parallel and are used for accommodating a pressure standard machine in the pressure detection unit and a pressure joint of a meter to be detected; the pressure control unit is in signal connection with the pressure standard machine in the pressure detection unit; and the power supply unit is electrically connected with the gas pressure generation unit, the pressure control unit and the pressure standard machine in the pressure detection unit respectively. The on-site full-automatic pressure calibrator does not need external gas cylinders or alternating current (AC) power supplies, can automatically generate gas pressure and accurate standard pressure, has light self weight and small volume, is convenient to carry on site, and can automatically calibrate various on-site pressure meters.

The automatic ice and snow thickness contact measuring method belongs to ice and snow thickness variance monitoring technology. Two detecting boards are made to face-to-face move automatically and vertically, and the distance between the reference point and the surface of ice or snow is detected to determine the thickness variance of ice or snow. The sensor for measuring the moving distance of detecting boards is either rotation speed sensor or magnetostricctive displacement sensor. The stay time for the detecting boards on ice or snow on the ice or snow interface is at most 10 sec to avoid no freezing with the detecting boards staying in reference position in rest time. The interval between two times of automatic measurement is optional in 0-60 min. The present invention can perform automatic in-situ measurement.

The invention discloses a support device used in the beveling stage of a ship plate. The support device includes: a support platform, which is arranged close to the edge of the ship plate and is used to support a cutting machine. The support platform is close to the A fixing device is connected to one side of the edge of the ship board, and the fixing device is used to connect the support platform to the ship board and keep the upper surface of the support platform coplanar with the upper surface of the ship board ; and the slide bar. The beneficial effect of the invention is to avoid the problem of poor straightness when cutting the end, and it is easy to carry, effectively reducing the safety problem caused by the hand-held cutting machine when the semi-automatic cutting machine cuts to the end of the plate, and is widely applicable to various large and medium-sized containers Ships, LNG carriers, LPG carriers, chemical tankers, ro-ro ships, floating storage tankers, product tankers, crude oil tankers, bulk carriers, passenger ships, special work ships, military ships and military auxiliary ships.

The invention discloses an electronic mutual inductor test system and a test method. The electronic mutual inductor test system comprises a standard device, a signal conversion device, an error measuring device, a test power supply, a merging unit and a tested electronic mutual inductor, wherein the standard device is used for providing a standard signal serving as a test reference; the signal conversion device is used for receiving the standard signal and converting the standard signal into an analog signal which can be acquired by the error measuring device; the test power supply is used for outputting a primary voltage and a primary current for test use; the merging unit is used for receiving a digital signal output by the tested electronic mutual inductor and processing the digital signal; and the error measuring device is used for receiving the standard signal output by the signal conversion device and the digital signal output by the merging unit, and acquiring the ratio difference and the phase difference of the tested electronic mutual inductor. The electronic mutual inductor test system is particularly suitable for a field error test of the electronic mutual inductor, andhas the advantages of convenient test work, high reliability, small equipment volume, light weight, high test result accuracy and the like.