measurement of the temperature

Standards of measurement of the temperature and the temperature of the test work, usually by being seized on a standard thermometer and method comparison standard thermometer, done that comparison. Due to the large range of gas dispensersscale temperature range specified interpolation different temperature zones of different instruments, but the actual temperature measuring instruments for the applicable temperature range is different, so the different temperature zones and types of measuring instruments which measurement methods are different. Various industries and regions thermometer traceable to standard equipment in all sectors and regions, thermometer calibration used in the construction industry can be traced back to the local metering station and then traced to China, China Institute of Metrology fuel dispensing hose reference, can be traced to China Building Science School building Energy and environmental Monitoring Center, and then finally traced to a Chinese benchmark China Institute of temperature measurement.

Temperature measurement calibration

Thermodynamicmarine fuel dispensers(symbol T) is the physical fundamentals hand, its unit Kelvin (Kelvin symbol K), defined as the thermodynamic temperature of the triple point of water 1 / 273.16. As the previous definition of the temperature scale used with 273.15K (freezing) to represent the difference between the petrol dispenser pump, so it retains all methods. By definition, equal to the size of degrees Kelvin, the temperature difference can also be expressed in degrees Celsius or Kelvin to represent. International Temperature Scale ITS-90 also defines international Kelvin (symbol T90) and the International Celsius (symbol t90)

temperature probe calibration

Move around the reflector so that the echo reaches a maximum angle of incidence corresponding to the point at this time is that the probes or the K-scale values. Material Velocity Calibration find R100mm described in accordance with a maximum reflected waves makes it possible to adjust the display range is displayed on the screen of the arc of the second echo select gate way for the double gate, A gate with an echo adjustment intersect, regulating B gate intersects with the second echo, adjust the speed of sound value makes the status line sound path measurement is 100, velocity values ??obtained at this time is the actual velocity values ??of the material. Probe Zero calibration measurement state maintained above the gate way to the positive or negative, so that the state regulate the fuel meters zero sound path measurement line again to 100, the probe zero value is zero at this time to get the value of the diesel meter. There are many oblique probe calibration method does not completely block the test stick using standard calibration, the calibration may be performed using the known depth of the hole, in theory, the reference reflecting body is smaller, the higher the accuracy of calibration, but the calibration difficulty is correspondingly increased. When using the calibrated orifice by measuring the depth of the hole and the horizontal position, to calibrate the angle of the slope is calculated, and using the measured values ??of the depth or horizontal position of the probe velocity and zero calibration.