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Field instrument parameters: instrument serial number, model number, manufacturer, input/output type and range, logic switch setting value, transmitter calibration point, power supply, and accuracy. Verification result: test results before and after calibration, maximum error, date and time of calibration, data input method, calibration meter model, number of calibrations and methods, etc., as well as calibration personnel who have managed the whole plant and have been certified Calibration equipment weekly inspection plan.
The system consists of a database for managing plant-wide equipment data, acquisition and correction data acquisition and communication software, calibration report printing software, and a BET A-type multi-function calibration meter. Hardware configuration 586 or more desktop computers. Calibration instrument BETA 325 pressure calibrator: used to calibrate the pressure switch and pressure transmitter and a variety of P / P, E / P, I / P, pneumatic valves and other base devices. BETA 135 multifunction frequency calibration meter: used to calibrate frequency signal, pressure switch and pressure transmitter. BETA 235 temperature calibration instrument: used to calibrate temperature transmitters, switches and indicators, pressure switches and pressure transmitters.
Optional BETAFLEX multi-function calibration meter for correcting frequency, speed, pressure transmitters and switches, thermal resistance and thermocouple transmitters and switches, testing DCS channels, measuring and generating mA signals, and setting intelligent transmission Zero and range of the device.
Accessories pressure vacuum Pump, hydraulic pump, loop power supply and pressure piping. Software configuration operating system: Windows 98; database maintenance software: create, modify the database; communication software: establish communication with BETA calibration instrument, implement automatic calibration; calibration report printing software; Chinese name input software: input or modify Chinese measurement point, Numbers, names, manufacturers, calibration personnel, etc.; database backup and reinstallation software.
The database structure database content can be divided into four parts. Process measurement points mainly include the area (unit number), measurement point number, location and measurement range. The field instrument (transmitter) mainly includes the instrument type, function, manufacturer, model, serial number, nameplate content, input and output range, and calibration points. The correction plan mainly includes the correction group name, period, and personnel. The calibration history library can be searched by measuring point, field instrument or calibration time.
The calibration process prepares the database in advance and enters the contents of the calibration plan, process measurement points, and field instrumentation into the computer. Before correcting an instrument, the relevant parameters of the instrument are downloaded to the instrument. Correct the field instrument (transmitter or logic switch) with the calibration meter that has downloaded the data. When correcting, complete the simple operation, can automatically record the correction result in the corrector. Upload the calibration result from the calibration meter to the computer's history database and print out the calibration report.
After the end of the T MM S-2000 system is put into use, the correction efficiency of the field instrument is greatly improved, the accuracy of the calibration is ensured, and the accuracy, reliability, and specification of the correction result are ensured. There are only 6 people in the measurement class and have undertaken the verification work of more than 3,000 transmitters and logic switches in the entire plant. The personnel involved in the calibration work, calibration instruments, measuring points, field instruments, and calibration results were all scientifically managed. Statistical reports and ledgers were automatically generated by the system, changing the original management model and bringing the management level of the factory up. A new step.
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The basic functions automatically correct pressure transmitters and switches; thermocouples, thermal resistance temperature transmitters and switches; DC signals and frequency, speed signals; on-site instructions. The automatic print correction report format can be specified by the user in a variety of formats. For the calibration work, the measurement parameters of the modern management process are implemented: measuring point number, measuring point position, engineering unit, drawing number (instrument electrical diagram and process PID diagram), measuring range, calibration guidance and other user-specified parameters.