1.General  Introduction
TY 7300 Automatic Thermo-technical Group-controlled Calibration System was designed to the requirement for calibrating lots of thermocouples and thermal resistors automatically. TY

7300 system using the modular structure and each modular unit of it can work alone. Users can select any number (no more than 5) of modular units for this system according to their

requirement. TY 7300 system using multi-modular parallel working mode to raise its efficiency, and can calibrate thermocouples and thermal resistors simultaneously.
2.Performance Features
1 Can control a plurality of furnace or oil slots for free inspection simultaneously
2 Using the modular structure and can be assembled flexible to meet user’s requirement. （no more than 5 modulars）
3．10 sampling channels for each thermocouples or thermal resistors modular.
4．Thermocouples of difference mark graduations can be calibrated in the same furnace.
5．Thermal resistors of difference mark graduations can be calibrated in the same furnace.
6 Specification for the structure of appearance
7. Can calibrate thermocouples and thermal resistors simultaneously.
8 This verification system is according to the following verification regulations :
JJG 141-2000《Verification Regulation of Working Noble Metal Thermocouples
JJG 351-1996《Verification Regulation of Working Base Metal Thermocouples
JJG 229-1998（2010）《Verification Regulation of Industry Platinum Copper Resistance Thermometers
JJG 130-2004《Verification Regulation of Liquid-in-Glass Thermometers for Working
JJG 978-2003《Verification Regulation of High Precision Mercury-in-Glass Thermometers for Used Petroleum
JJG 310-2002《Verification Regulation of Pressure Thermometers
JJG 226-2001《Verification Regulation of Bimetallic Thermometers
JJG 115-1999《Verification Regulation of the Standard Copper/Copper-Nickel Thermocouple
JJG 75-1995《Verification Regulation of the Standard Platinum-10Rhodium/Platinum Thermocouple
JJG 368-2000《Verification Regulation of the Working Copper/Copper-Nickel Thermocouple
JJF1098-2003《Calibration Specification for Auto-measuring System of Thermocouples and Resistance Thermometers
3.Technical Parameters
1.Parasitic Potential of the Scan Switch:≤0.4μV
2. Accuracy: Potential Measurement Error ±0.005%
   Resistance Measurement Error ±0.01%
   Uncertainty for Thermocouple Calibration≤1.2℃（the annual variation of 0.7℃ for the Grade II Standard Thermocouple is included）
   Uncertainty for Resistance Calibration 0.05℃
3. Resolution  0.01μV for Potential; 0.1mΩ for Resistance.
4. Accuracy of Temperature Control
   Temperature deviates from the check point no more than ±5℃ when thermocouple verifying and ±2℃when thermal resistor verifying.
5 .Stability of Constant-Temperature
   Temperature variation during the calibration of thermocouples  0.2℃/min
   Temperature variation during the calibration of thermal resistors 0.04℃/10min
6. Calibration Temperature
   Thermocouple 300~1200℃;  thermal resistor：0~300℃
7.Numbers can be calibrated in one tim
   1~10 thermocouple（Standard thermocouple is not included）; or
   1~10 thermal resistors（Standard thermal resistors is not included）.
   Multi-batch calibration at one temperature is allowed.
8.During the calibration, you can calibrate thermocouples and thermal resistors at different temperature at different times, and the two results can be integrated to one report  automatically.
9. Mark graduations of thermocouples can be calibrated
    Mark graduations of thermal resistors can be calibrated  Pt100、Pt10、Pt50、Cu100、Cu50、BA1、BA2、G10；
10. Average Time for heating and calibrating of each checkpoint: about 30 min.

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