This system is an intelligent cluster-based automated verification platform designed for batch, multi-station temperature sensor calibration scenarios, suitable for large-scale verification and testing of various temperature measuring instruments. The system supports synchronized temperature control of up to 8 constant temperature baths, which can be cascaded and expanded to 64 units. With automatic device discovery and one-click configuration features, a distributed multi-bath temperature a distributed multi-bath temperature control network can be quickly established, enabling seamless equipment expansion and cluster collaboration.

The verification coverage is extensive, supporting Pt and Cu series resistance thermometers, NTC thermistors, and temperature transmitters for full-category verification. It is compatible with 2-wire, 3-wire, and 4-wire resistance thermometer connections and multi-accuracy class tolerance verification. It supports custom NTC parameters and automatic back-calculation of the β coefficient, and can fully automatically perform detection of core metrological parameters such as R0, temperature coefficient, and tolerance. The system features powerful parallel group verification capability, supporting simultaneous verification of 4 groups of different graduation-type resistance thermometers, with up to 999 test points per single verification process. Through a dual scheduling strategy of fixed-point binding and intelligent slot matching, efficient collaborative verification of multiple devices is achieved. The entire process provides visual monitoring of temperature control status, and can automatically perform data merging, error, repeatability, and uncertainty calculations, generating original records, verification reports, and calibration certificates with one click. It supports custom templates, data export, and database traceability, significantly improving the automation level of temperature verification and data management compliance.

The Functions of System Software

Scalable Cluster Expansion	Multi-Bath Synchronized Temperature Control with Cascade Expansion: Supports synchronized temperature control of 8 constant temperature baths, expandable to 64 baths; suitable for large-batch, multi-station verification scenarios. Automated Device O&M: Built-in constant temperature bath communication parameter configuration and communication testing functions, supporting automatic device discovery and one-click configuration.
Full-Category DUT Compatibility	Full Coverage of Multi-Graduation Resistance Thermometers: Supports Pt10, Pt100, Pt-X, Cu50, Cu100 and other resistance thermometer types; covers AA, A, B, C classes and custom tolerance grades. R0 resistance value is freely configurable, compatible with 2-wire, 3-wire, and 4-wire tabulation methods. Flexible NTC Thermistor Adaptation: Supports custom β coefficient and R25 parameters, compatible with different types of thermistors, and can automatically perform detection and calculate the β coefficient. Temperature Transmitter Adaptation: Supports configuration of transmitter range and accuracy parameters, meeting the verification requirements of temperature transmitter instruments. Multi-Dimensional Test Items: Can verify core metrological parameters including resistance thermometer temperature coefficient α, R0, temperature tolerance, and thermistor β coefficient.
Flexible Constant Temperature Source & Standard Configuration	Dual-Type Constant Temperature Source Support: Compatible with constant temperature baths and calibration furnaces; temperature control parameters can be independently configured, with automatic temperature point switching management. Multi-Standard Instrument Adaptation: Supports standard resistance thermometers and S-type standard thermocouples; custom standard instrument switching temperature points are configurable, along with editability of standard instrument stability and assessment time parameters. Dual Temperature Control Modes: Provides manual and automatic temperature control modes to accommodate different verification scenario requirements. Multi-constant-temperature-source parallel task assignment, independent start/stop, and separate temperature point parameter configuration. Intelligent PID temperature control algorithm with automatic temperature stability determination.
Efficient & Intelligent Group Verification	Multi-Group Parallel Verification: Supports simultaneous verification of 4 groups of different graduation-type resistance thermometers, with each group independently configurable for standard instrument selection; up to 999 test points per single verification process, meeting large-batch, multi-zone verification requirements. Intelligent Slot Scheduling: Supports designated-point binding, where each verification temperature point can be matched to a specified constant temperature bath;alternatively, the software can automatically match the optimal bath based on temperature points, achieving multi-bath collaborative scheduling. Data & Report Integration: Supports grouped verification mode with automatic merging of multi-bath DUT data, generating unified verification reports to significantly improve data processing efficiency. Full-Process Visualization: Real-time display of multiple constant temperature bath heating and temperature control status, with full-process visual monitoring of verification progress and equipment operation. Automatically calculates deviation, correction values, measurement repeatability, performs automatic uncertainty evaluation, and generates original records and calibration certificates. Supports custom templates, data export, and database traceability.

DTZ-01/02 Technical Parameters

Items	Parameters	Items	Parameters
Accuracy class	0.005%	TC free end compensation range	（5~50）℃
Scan switch parasitic potential	≤0.2µV	Display resolution	0.01℃
Data collection difference between channels	≤0.5µＶ、1.0 mΩ	Control ability of TC validation furnace	220V、0－40A
Repeatability of measurement	≤1.0µＶ、3.0 mΩ	Set point deviation	≤±0.1℃
Validation of measurement data processing results	≤0. 1µＶ、0.1mΩ	Total extended uncertainty of thermocouple system	≤0.68℃
Total expansion uncertainty of resistance temperature detector system	The standard platinum resistance Rtp is remeasured using a water three-phase point flask to obtain: thermal resistance≤0.03℃（0℃）；0.06（100℃）
	Standard platinum resistance Rtp directly uses the value given by the certificate: resistance temperature detector ≤ 0.05℃（0℃）；0.09（100℃）
TC system for working	Constant temperature ≤0.5℃/6min Measurement ≤0.1℃/min
Constant temperature performance of industrial thermal resistance system	Constant temperature ≤0.02℃/10min Measurement ≤0.01℃/min

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