Dead Weight Tester Supporting Automated Calibration Process and Intelligent Re

Product Specification

System Architecture
1. Core Control Unit
Computer Control System: Fully automated calibration process control and data processing
High-Precision Digital Multimeter: Keithley 2010, enabling microvolt-level signal acquisition
Multi-Channel Scanner: ≤0.2μV parasitic potential, ensuring signal purity
2. Professional Testing Unit
Thermocouple Calibration Furnace: Provides stable high-temperature environment
High-Precision Constant Temperature Bath: Achieves ±0.01℃/30min temperature field stability
Three-Wire Resistance Converter/Terminal Block: Automatically completes three-wire resistance thermometer verification
3. Intelligent Wiring System
Front-End Terminal Block: Centralized connection of standards and sensors under test
Automatic Lead Conversion: Intelligently switches between two-wire/three-wire/four-wire measurement modes

Core Features
1. Fully Automated Intelligent Calibration
Regulation Compliance: Strict adherence to national calibration protocol requirements
Customizable Temperature Points: Supports default protocol values or user-defined settings
Real-Time Status Monitoring: Dynamic display of temperature curves, rate of change, elapsed time, and other metrics
Intelligent Re-calibration Mechanism: Automatic alerts for non-compliance to prevent operational errors
2. Precision Measurement Technology
Thermocouple Centering: Automatic soldering positioning minimizes measurement errors
Multi-Compensation Modes: Supports freezing point or ambient temperature compensation using Class A Pt100 platinum resistance
Optimized Measurement Algorithm: Bidirectional switching eliminates parasitic potentials
Three-Wire Automatic Measurement: Integrated design completes two measurements automatically
3. Intelligent Control System
RS485 Bus Connection: Automatic temperature point switching without manual intervention
Rapid Over-Temperature-Free Heating: Intelligent instrument control ensures swift response from constant-temperature equipment
Power Failure Protection: Calibration resumes upon power restoration with no data loss
4. Comprehensive Safety Protection
Hardware Protection Design: High-power terminals with protective terminals ensure safe operation
Multi-level Over-Temperature Protection: Independent temperature control system triggers alarms and halts heating upon anomalies
Equipment Damage Prevention: Comprehensive hardware/software safeguards guarantee worry-free heating processes

Applicable Sensor Types
1. Thermocouple Calibration
Supported Types: S, R, B, K, N, J, E, T, EA-2, Short-Type S, Short-Type R
2. Resistance Temperature Detector (RTD) Calibration
Supported Types: Pt10, Pt100, Cu50, Cu100, Pt-X, Cu-X
Wiring Configurations: Two-wire, Three-wire, Four-wire
3. Other Temperature Instruments
Glass Liquid Thermometers
Standard Mercury Thermometers
Pressure Thermometers
Bimetallic Thermometers

Product Advantages
1. Precision and Reliability
Microvolt-level resolution: 0.01μV ultra-high accuracy
Stable temperature field: Calibration furnace ≤0.2℃/6min, thermostatic bath ±0.01℃/30min
Pure signal: ≤0.2μV parasitic potential ensures measurement accuracy
2. Intelligent Efficiency
Fully automated operation: One-click completion from temperature control to certificate output
Batch calibration: Supports simultaneous testing of 20 sensors
Intelligent data processing: Automatically generates record sheets, certificates, and result notifications
3. Safe and Convenient
Multi-layered protection: Hardware safeguards + software safeguards + over-temperature protection
Data Security: Database storage with backup and query capabilities
User-Friendly Operation: Excel export with customizable formats for easy management
4. Professional Services
Full Intellectual Property Rights: Guaranteed software upgrades
Comprehensive Technical Support: Dedicated professional services for clients
Complete Accessories: Ready to use out of the box for rapid calibration deployment

Application Areas
1. Metrology Institutions
Establishment of temperature measurement standard equipment
Mandatory verification of temperature sensors
Provision of third-party calibration services
2. Industrial Manufacturing
Factory acceptance testing of production line temperature sensors
Periodic verification of industrial field temperature instruments
Equipment validation for quality control departments
3. Research & Education
Temperature measurement research in institutes
Teaching demonstrations in university laboratories
Testing and validation for new product development
4. Medical & Power
Calibration of temperature sensors in medical equipment
Verification of temperature monitoring systems in power plants
Verification of critical process temperature control instruments

Typical Application Scenarios
1. Automated Laboratories
Enables 24/7 unattended batch verification, significantly boosting operational efficiency
2. On-site Rapid Testing
Portable design facilitates quick calibration of temperature instruments in industrial environments
3. High-Standard Metrology
Meets the high-precision verification requirements for temperature sensors set by national-level metrology institutions

Workflow
1. Sensor Connection: Connect the calibrator to the sensor under test via the terminal block.
2. Parameter Setup: Configure calibration temperature points and procedure parameters.
3. Automatic Temperature Control: The system intelligently controls the temperature-maintaining equipment to achieve the target temperature.
4. Data Acquisition: High-precision digital meters automatically capture measurement signals.
5. Data Processing: The system automatically calculates errors and determines compliance.
6. Report Output: Generate calibration records, certificates, or result notifications.