Temperature is the most needed physical
quantity in industrial measurement. In industrial and agricultural production,
national defense and scientific research, the importance of temperature
measurement is self-evident. In order to conform to the development of modern
metering technology, improve the measurement accuracy, meet the needs of
engineering and laboratory actual measurement, Dalian Bocon Science and
Technology Co., Ltd. designed a two-channel precision resistance thermometer.
The thermometer is used by portable dual-channel display device and high
precision platinum resistance temperature probe, and can be tested on-line and
accurately in the actual production site.
Small sizes,battery-powered,Field use.
Built-in RTD curves meet the polynomial equation.
Variety of statistical functions, Powerful storage capacity
Temperature Resolution:0.001℃
Dual channel display temperature difference ≤0.01℃
High reliability and durability,Performance stability
In order to reduce the uncertainty of measurement,
we use water three-phase point bottle freezing device with high purity and low
uncertainty and Ga,In,Sn,Zn fixed point furnace to define fixed point.
Microk-125 DC temperature measuring bridge is used as temperature measuring
instrument, which can complete the self-calibration of linearity. In order to
improve the accuracy of the test, the 8-bit and a half precision DC temperature
measuring bridge Microk-125, reference < JJG160-2007 standard platinum
resistance thermometer verification regulation "was selected. We
introduced the water three-phase point automatic freezing device and the
Zn,Sn,In,Ga fixed point furnace. According to the ITS-90 regulation, the high
precision platinum resistance in the working temperature region is divided by
the corresponding fixed point. The specified reference function and deviation
function interpolation are used to define the temperature value between fixed
points.
