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Standard Platinum Resistance Thermometer implementation of automatic temperature measurement devices

Supervision and Inspection Institute, Nanjing 210028, China) Abstract: Determination of the meter and adjust parameter values, and put forward the general experience. Keywords: meter; value; determine the important parameters of the taxi meter K value is related to the proper operation of the distance measurement. In this paper, taxi test, how to reasonably determine or adjust the K value, try to discuss and put forward the general experience. 1 Determining the value for K has not set the meter will be subject to the requirements of the taxi using the error reasonably determine its value, as follows: When the tire pressure and the car sat in the front row who are in line with test procedures ((JJG517- 1998 Taximeter \For example, take D = 1000m, the standard device may count J (m). because each meter to accept a signal indicating the correct distance: 1000JJ (D ・ K1), by definition,[link widoczny dla zalogowanych], the value that the meter indicates the correct 1km must acceptable number of signals. so K = 1000 / [1000Jd / (o ・ K1)] = D ・ ink / Jd c values with the people, there are K = D ・ Kx / [Jd (1 + c)] the K value calculation formula for the K = DK (1 + C) / (1), for example, a Jetta car, the tire pressure and front occupant, are of order requirements. Let C = 0, K = 1000. In the test line test, when the D = 1000m,[link widoczny dla zalogowanych], it may be the standard device count Jd = 943m. by the formula (1) may be 1060. At this point, the value will be transferred to the meter in 1060, and then a taxi rules requires detailed examination. 2 value of the adjustment part of the drive and tire wear and other reasons the surface of the taxi test period, the use of error is often too large or super poor. wishing its value close to zero, the formula can also be used (1) to calculate. Then there is the meter value of the Central Plains and adjust as above,[link widoczny dla zalogowanych], no further explanation. 3 Conclusion checking and testing the use of taxis is still not close to zero error,[link widoczny dla zalogowanych], then a formula can be (1) to obtain the optimal K value. the light of experience, K value is greater than 1000 ,[link widoczny dla zalogowanych], its ending in 0 or 5 repair is about more appropriate. as in the 600 to succeed, the ending is even more appropriate amendment is about. Author: Wu Shaozhen, male, assistant engineer. Work: Supervision and Inspection Institute, Nanjing measurement. Mailing Address : 210028 Village Road, Nanjing, Lung Poon 57. Received an elbow asked -2007 O8 a O2MSComm1.Output = \\'input string is empty MSComm1.Output = \1) = Chr (13) MSComm1.PortOpen = False 'Close the serial port X = Val (strbuffer)' reading the results of the operation unit conversion EndSub4 the following steps to use this device: the standard platinum resistance associated with the keithley2000 tables, then into four the form of wire resistor, the number of tables will keithley2000 RS232 communication protocol and procedures set the same settings, that was 9600, no parity, 8 data bits, 1 stop bit. the serial cable to the computer tables to link the serial port, verify the accuracy of the serial number, boot run this program you can achieve the automatic standard platinum resistance thermometer temperature. Author: Yang Zhibin, male, engineer. work units: Fujian Institute of Measurement Science and Technology. Mailing Address: 147 Waring Road, Fuzhou 350003. Received elbow asked :2007 -05-25

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