56results about How to "Meeting Calibration Needs" patented technology

The invention provides a method and a device for calibration of photoelectric bridge deflection meters. The device comprises a measurement mainframe, a moving module and an automatic leveling module. The measurement mainframe is used for calculating calibration data of a to-be-calibrated deflection meter on the basis of set reference data and measurement data of the to-be-calibrated deflection meter. The moving module is connected with the measurement mainframe and vertically moving relative to the horizontal plane to enable deflection measurement of the to-be-calibrated deflection meter on the basis of control signals obtained from the reference data processed by the measurement mainframe. The moving module is arranged on the automatic leveling module which is connected with the measurement mainframe, and the automatic leveling module is controlled by the measurement mainframe to realize automatic leveling. By the method and the device for calibration of the photoelectric bridge deflection meters, calibration of static deflection and dynamic deflection of the photoelectric bridge deflection meters can be realized.

The invention discloses a device for generating a double-uniformity-area magnetic field and a correction method for magnetometer correction. The device comprises a sliding gradient magnetic field coil device and a gradient magnetic field excitation device, wherein the sliding gradient magnetic field coil device comprises a uniform solenoid, a torque-free solenoid, a sliding table and a base. The gradient magnetic field excitation device comprises a dual-output direct-current current source and two ampere meters, and can generate two uniform magnetic fields meeting gradient test requirements. The problem that positioning errors and position slight changes of a probe influence the correction result of gradient magnetometer correction when a traditional gradient magnetic field device is used in the correction process is solved. Magnetic output at any gradient can be generated, manufacturing is simple, and large-gradient distance measuring can be achieved.

The invention provides a partial pressure mass spectrometer calibration device, which mainly consists of a fine-tuning valve, a piston pressure gauge, a sample preparation chamber, a plurality of high-purity gas cylinders, a capacitance film vacuum gauge, a first-stage sampling chamber, a second-stage sampling chamber, a sampling chamber, small hole, calibration chamber, separation gauge and pumping system; the sample preparation chamber is connected to the piston pressure gauge and the capacitive film vacuum gauge respectively, and the sample preparation chamber is also connected to multiple high-purity gas cylinders connected in parallel through fine-tuning valves; Multiple sampling chambers with different volumes are connected in parallel between the sample preparation chamber and the primary sampling chamber, and multiple sampling chambers with different volumes are connected in parallel between the primary sampling chamber and the secondary sampling chamber. The chambers are connected in series with small holes and calibration chambers; the calibration chambers are respectively connected to the partial pressure mass spectrometer to be calibrated and the separation gauge; the sample preparation chamber, the primary sample injection chamber, the secondary sample injection chamber and the calibration chamber are all connected to the pumping system. The invention can not only configure the actually required mixed gas according to the customer's requirement, but also ensure that the gas does not change during the calibration process.

The invention provides a winding needle calibration device. The device comprises a fixing base, a sliding sleeve, a driving unit and a calibration shaft. A mounting hole and a measuring position groupare arranged on the fixing base. The measuring position group comprises more than two measuring positions, and the more than two measuring positions are distributed along the direction parallel to the axial direction of the mounting hole. Each measuring position is provided with a locking unit, and the locking units are used for clamping a measuring tool. The sliding sleeve is slidably installedon the fixing base in the axial direction of the sliding sleeve, and the sliding sleeve and the mounting hole are coaxially arranged. The driving unit is installed on the fixing base, the output end of the driving unit is connected with the sliding sleeve, and the driving unit drives the sliding sleeve to move towards or away from the mounting hole. The two ends of the calibration shaft are detachably connected with the mounting hole and the sliding sleeve respectively. The winding needle calibration device can assist a winding needle in calibration.