Automatic Verification System for Thermocouple and Thermistor is automated verification equipment integrating the computer technology,electronic technology and automatic testing technology.The system is mainly used for the automatic verification/calibration of primary and secondary temperature instrument.In the system,the multichannel low-potential scanner,digital multimeter,thermocouple verification furnace,thermostatic bath and other devices are control by computer,which can realize the full automation of temperature control,data acquisition,data process,report generation,data storage and print in the process of verifying/calibrating the primary and secondary temperature instrument.The system functions and technical indexes fully conform to relevant national verification procedures and follow the ITS-90 international temperature scale.
System functions:
Verification/Calibration Function | Indexing Number | Grade | Notes |
Standard Thermocouple | S,R,B | Class I,and Class II | Standard thermocouple |
Thermocouple for Working | S,R,Short S, Short R | Grade I and II | Precious metal thermocouple for working |
B | Grade II and III | ||
Grade K,N,E,J,T,EA-2 | Grade I,II,and III | Base metal thermocouple for working | |
WRe3-WRe25,WRe5-WRe26 | Tungsten rhenium thermocouple for work | ||
Industrial Thermistor | Pt100,Pt10,Cu50,Pt-X,Cu-X | Grade AA,A,B,and C | Two-wire,three-wire,and four-wire system |
Temperature Transmitter | 0-10mA,4-20mA,1-5V | With thermocouple and thermistor | |
Precious Metal Thermocouple Wire | S,R | Standard Grade(Class I and II),Grade I and II | Previous metal thermocouple wire |
B | Standard Grade(Class I and II),Grade I and II | ||
Platinum Rhodium Thermocouple Wire | S,R,B | ||
Base Metal Thermocouple Wire | K,N,E,J,T | Grade I,II,and III | Base metal thermocouple wire |
Platinum Wire for Electrical Resistance Thermometer | Pt25,Pt100,Pt10 | Standard Grade(Class I and II),Grade A and B | Platinum wire for electrical resistance thermometer |
Expansion Thermometers | Standard mercury-in-glass thermometer,liquid-in-glass thermometers for working,bimetal thermometer,and pressure type thermometer | ||
Secondary Temperature Instruments | Moving-coil temperature indicator regulator,digital temperature indicating regulator,industrial process measurement recorder | ||
Technical Indexes:
n Multichannel scanning of parasitic potential in switch:≤0.2μV
n Difference value of inter-channel data acquisition:≤0.5μV 1mΩ
n Repeatability measurement: ≤1.0μV 3mΩ
n Thermostatic performance of thermocouple verification:
Constant temperature≤0.5℃/6min,and measurement≤0.1℃/min
n Thermostatic performance of thermostatic oil and water bath:
Constant temperature≤0.02℃/10min,and measurement≤0.01℃/min
n Compensation range of thermocouple reference end:0℃-50℃,resolution:0.01℃
Product advantages:
High-efficiency Working Mode
n Mixing verification:The system can realize the mixing verification of base metal thermocouples with different indexing numbers in one same furnace.
n Grouping verification:The low-temperature thermocouple and thermistor can be verified in group,wherein 10 groups(100 pieces)can be verified in one batch.
n Mandatory verification:The system can perform the quick mandatory verification as user requires.
n The special positioning device for verification furnace can make quick position for the furnace charging of thermocouple,to guarantee the accuracy of furnace charging position.
n Advanced temperature control mode is adopt,so the constant temperature source has a high rate of temperature increase and good stabilization effect,which can reduce the verification time and improve the working efficiency.
n The system can be upgraded to multi-furnace group-control system if the verification quantity is large.
Complete Safety Mode:
n Both the imported intelligent instrument and software are used for double temperature control protection with the function of over-temperature protection and power down protection.
n Self-inspection and line inspection:It can make humanized preventive protection for the open circuit,reverse connection and other protection on the standard and inspected wiring.
n The software supports multimedia audible alarm and prompt,and allows customer to customize the alarm and prompt sound of various events.
n Standard cabinet is adopted,and separate treatment is used for the the motive power source and signal control part to avoid the problem of signal interference.
Flexible and Diversified Configuration
n It supports multiple models of digital meter communication.
n It is compatible with the constant temperature source from different manufacturers.
n The verification temperature point of thermocouple can be the procedure default value,or be set as any point value as the customer requires,such as 660.5°C.
n The reference end treatment can be compensated by ice point thermostat or automatically compensated by the temperature sensor for reference end.The temperature sensor for reference end uses Grade A Pt100 platinum resistor which has stable reading and high measurement accuracy,and is easy to be corrected.The correction value can be input into the software,to improve the measurement accuracy.
Graphical Software Operation Platform
n The software can be operated perfectly in the Windows series of operation system,and the system has the user interface in Chinese with simple operation.
n Rich display interface:it displays the verification data and temperature control cure in real time,and can automatically track and display all state information of all verification furnaces,thermostatic baths,and standards,which is convenient for the measuring personnel to control the equipment operation status in real time.
n Simulating verification:the whole verification process is simulated by software,which can be used for study anddemonstration.
n Both the software and hardware product have the fully proprietary intellectual property rights,so the upgrade service is guaranteed for providing all-around services for customers.
Modular Data Management Function
Software Secondary Development Function
Multi-channel low potential scanner
Professional Data Processing Capacity
Uncertainty analysis software
Free professional temperature scale conversion software