0538-5089056
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Introduction
The DTG Smart Dry Block Calibrator is a portable high-low temperature constant temperature source featuring high temperature control accuracy, rapid heating/cooling rates, and a uniform temperature field. It is well-suited for on-site temperature calibration. The device integrates a high-precision electrical measurement module, breaking the limitation of traditional dry block calibrators that only control temperature. It is capable of calibrating thermocouples, RTDs, and temperature transmitters, simultaneously realizing temperature control, signal acquisition, data processing, and conformity assessment. It supports data storage and standard calibration report output, achieving the integration of temperature control, electrical measurement, and data traceability. This makes it suitable for both laboratory precision verification and on-site calibration scenarios.
Product Characteristics
| Category | Sub-category | Description |
|---|---|---|
| Full-category Sensor Adaptability | Standard Channel Support | Equipped with dedicated independent standard input channels, supporting external 1st/2nd class standard platinum resistance thermometers, compatible with Pt25, Pt100, smart sensors (RTD/SMP, etc.) and S, R, B, T type thermocouples as standards; temperature field control and reference measurement loops operate independently without mutual interference. |
| Comprehensive DUT Coverage | RTDs: Industrial platinum/copper RTDs (PT10/PT50/PT100/PT1000/Cu50/Cu100). | |
| Thermocouples: S, R, B, K, N, E, J, T type industrial thermocouples. | ||
| Transmitters: Voltage-type temperature transmitters, current-type temperature transmitters. | ||
| Instruments & Switches: Temperature switches, oil surface temperature controllers, winding temperature controllers, pressure thermometers, bimetal thermometers. | ||
| Sensor Lifecycle Management | Sensor Lifecycle Management | Supports full-function management including addition, deletion, modification, viewing, and copying of sensors; SPRT and RTC type sensors can automatically match formula coefficients according to specifications and ranges; smart sensors are plug-and-play, automatically managed in the database with highlighted identification. |
| Integrated Core Hardware Technology | Built-in High-Precision Electrical Measurement Unit | Standard 6½-digit and 7½-digit high-precision measurement modules (selectable grades); supports multi-parameter measurement of resistance (OHM), direct current voltage (DCV), and direct current (DCI); electrical measurement resolution not lower than 0.0000001, meeting the needs of various high-precision metrology scenarios. |
| Deep Fusion Architecture | The constant temperature field and high-precision electrical measurement unit adopt a deep fusion design of underlying hardware + software algorithms, rather than a simple functional superposition. It ensures reliability and measurement stability at the system level, and completely eliminates additional errors introduced by splicing multiple devices. | |
| 4-Wire RTD Constant Current Reversing Measurement Technology | Through the time-division constant current excitation circuit and high-impedance voltage detection circuit, it eliminates the influence of lead resistance and contact resistance, achieving absolutely accurate measurement. | |
| Patented Cold Junction Compensation Design | Equipped with an independent high-precision cold junction temperature sensor, adopting multi-point temperature monitoring + intelligent compensation algorithm to ensure the cold junction accuracy of thermocouple measurement. | |
| Basic Electrical Measurement Configuration Capabilities | Supports gain and zero point calibration correction for electrical measurement channels. | |
| Thermocouple channels support two cold junction compensation modes: built-in cold junction and manual input. | ||
| Supports switching of the electrical measurement filtering function. | ||
| Supports one-click "zeroing" of thermocouple channels to eliminate system errors caused by zero drift. | ||
| Customizable configuration of electrical measurement standard assessment conditions such as temperature fluctuation, setpoint deviation, and temperature change rate. | ||
| Fully Automated Calibration Workflow | Visualized Task Configuration | Supports multi-point self-correction mode, allowing one-time setting of multiple temperature calibration points and one-click start of the automatic calibration process. |
| In indication verification mode, the number of temperature points and acquisition times are unlimited; a single batch supports parallel calibration of up to 8 DUTs. | ||
| Switch calibration supports custom configuration of forward and reverse strokes, and heating/cooling rates; a single batch supports up to 6 temperature switches; oil surface temperature controllers support 1 connection, adapting to up to 6 switch channels. | ||
| Calibration items can automatically correspond to tolerance thresholds based on the accuracy level of the DUT, while supporting manual custom modification. | ||
| Supports batch entry and modification of DUT factory serial numbers, and task configuration templates can be saved and reused. | ||
| Full-Process Real-Time Monitoring | Real-time display of all-dimensional information including electrical measurement data, temperature field status, operating status, task progress, running time, stability countdown, etc.; in indication calibration mode, synchronously displays the current execution temperature point and current calibration times. | |
| Real-time calculation and display of calibration results such as deviation, electrical measurement value, temperature value, etc., with automatic highlighting of out-of-tolerance data. | ||
| Real-time monitoring of the 10-minute fluctuation, maximum, and minimum values of standard and DUT channels, with line charts for data visualization. | ||
| Standardized Automatic Data Processing | Built-in algorithms for national metrological verification regulations such as JJG 229, JJG 141, JJG 351, JJG 630, etc., automatically calculating key parameters such as indication error, hysteresis error, resistance, and temperature without manual calculation. | |
| Supports automatic conformity determination based on the accuracy level of the DUT, outputting standardized calibration results. | ||
| Supports traceability of historical calibration records, allowing retrieval of raw data from any historical record and the complete project configuration at that time, and supports export of raw record tables. | ||
| Intelligent Temperature Control and Acquisition System | Programmatic Heating and Cooling Control | Supports multi-temperature point programming settings, configurable multi-segment ramp rate temperature control; the system automatically completes heating, cooling, and setpoint switching at the set rate without manual attendance throughout the process. |
| Adaptive Intelligent Temperature Control | Based on PID parameter auto-tuning technology, it can automatically adjust control parameters according to different loads and medium characteristics, and automatically switch to the optimal control scheme in different temperature zones, ensuring temperature field uniformity and stability. | |
| System-Level Constant Temperature Stability Judgment | Built-in intelligent constant temperature judgment algorithm, real-time monitoring of temperature field change rate. Only when the temperature stability fully meets the verification regulation requirements will automatic data acquisition be triggered, ensuring the measurement process complies with regulations. | |
| Multi-Channel Synchronous Automatic Acquisition | After the temperature field stabilizes, automatically scans all channels sequentially, synchronously acquires temperature field and DUT data, completes multiple forward and reverse readings as required by regulations, and automatically calculates the average value, ensuring the objectivity and accuracy of measurement data. | |
| Massive Data Storage and Retrieval | Built-in 8GB storage space, capable of storing 100,000+ calibration records; supports combined retrieval by multiple conditions such as factory serial number, completion date, project ID, instrument type, and calibration date. | |
| Data Management and System Security | Comprehensive Backup and Recovery Mechanism | Supports automatic backup strategies with customizable cycles; can select specified backup nodes to restore full data. |
| Supports single calibration record-level data recovery; after retrieving the target record, it can be restored to the calibration configuration and data node at that time. | ||
| Permission Management | Supports hierarchical permission management, with permission control over three types of functions: calibration operations, backup and recovery, and advanced configuration, meeting the compliance management requirements of metrology laboratories. | |
| Power-off Resume | Capable of power-off resume; after power restoration, it automatically resumes the calibration task, and measured data is effectively retained, avoiding repetitive work. | |
| Remote Operation and Maintenance Diagnosis | The system automatically records full operation logs, with audit trails for all operations. Operation logs are tamper-proof. When equipment abnormalities occur, log files can be exported for remote after-sales diagnosis, assisting in rapid location and resolution of problems. | |
| Human-Computer Interaction and Expansion Capabilities | Touch Human-Computer Interface | Equipped with a 7-inch high-definition touch screen and a fully Chinese graphical operation interface. The operation is intuitive and easy to use, reducing personnel learning costs. |
| Communication Interface | Standard RS232/RS485, WiFi, LAN/Ethernet interfaces, supporting USB flash drive data export, adapting to laboratory information management needs. | |
| Sustainable Upgrade | Supports USB flash drive firmware online upgrade, continuously obtaining the latest function iterations and verification regulation updates, ensuring long-term compliant and available equipment. |
Selection Guide
| Feature | Details | DTG | DTG-MU |
|---|---|---|---|
| Multi-point Auto Calibration | Multi-point self-correction; one-click auto-calibration. | • | • |
| Adaptive Smart Temp Control | PID self-tuning; auto-adjusts to load/medium characteristics. | • | • |
| Language Support | EN/CN switch; customizable temp units (℃/℉). | • | • |
| Communication | RS232, RS485, WiFi, LAN; USB data export. | • | • |
| Adjustable Ramp Rate | Multi-point programming; auto heat/cool/setpoint switching. | • | • |
| Reference Channel | Dedicated independent standard input; isolated temp control & reference measurement. | • | • |
| UUT Channels | RTD, TC, DCI, DCV, loop power, temp switch. | • | |
| High-Precision Measurement | 6½/7½-digit module; resolution 0.0000001℃. | • | |
| Auto Data Processing | Auto pass/fail judgment per UUT accuracy; standardized report output. | • | |
| Multi-Channel Sync Acquisition | Auto-scans all channels; syncs temp field & UUT data. | • | |
| Indication Calibration | Unlimited temp points & sampling counts. | • | |
| Switch Calibration | Up/down stroke support; oil-surface temp controller compatible. | • | |
| Mass Data Storage | 8GB internal; stores 100k+ calibration records. | • |
Technical Parameters
| Model | DTG-MU1200G | DTG-MU660AG | DTG-MU660BG | DTG-MUN40AG | DTG-MUN40BG |
|---|---|---|---|---|---|
| Range (℃) | 300 - 1200 | 50 - 660 | 50 - 660 | -40 ~ 150 | -40 ~ 150 |
| Display Accuracy (℃) | ±0.2 | ±0.4 | ±0.35 ~ ±0.5 | ±0.2 Full Range | ±0.2 Full Range |
| Stability (℃) | ±0.4 | ±0.1 | ±0.03 ~ ±0.05 | ±0.1 | ±0.01 Full Range |
| Axial Uniformity within 40mm (℃) | / | ±0.5 | ±0.05 @ 50; ±0.35 @ 420; ±0.5 @ 660 | / | ±0.1 @ -40; ±0.05 @ 0; ±0.07 @ 150 |
| Radial Stability (℃) | ±1.0 | ±0.15 | ±0.02 @ 50; ±0.05 @ 420; ±0.1 @ 660 | ±0.2 | ±0.01 Full Range |
Electrical Measurement Specifications
| Channel | Measurement | Range | Accuracy | Resolution | Sensor Type | Other |
|---|---|---|---|---|---|---|
| Standard Channel | SPRT | 0~400Ω -196°C~850°C | ±0.002Ω @ (0~50)Ω ±40ppm reading @ (50~400)Ω | 0.001mΩ | Pt25, Pt100, Smart Sensors (RTD, SMP, etc.) | Measurement Method 4-wire RTD Constant Current Reversal Measurement |
| TC | 0~100mV | ±(0.02%RD + 5μV) | 0.001μV | S, B, R, T | Built-in CJC Accuracy ±0.35°C (0~50°C) | |
| DUT Channel | RTD | 0~400Ω -200°C~850°C | ±0.002Ω @ (0~25)Ω ±80ppm reading @ (25~400)Ω | 0.001mΩ | ITS90(Cu50, Cu100, Pt50, Pt100, PtX), CVD, IEC60751, NiCrNi, SMP | Measurement Type 2- / 3- / 4-Wire |
| TC | 0~100mV | ±(0.02%RD + 5μV) | 0.001μV | K, N, T, J, E, R, S, B WRe3, WRe5 | Built-in CJC Accuracy ±0.35°C (0~50°C) | |
| DCI | 0~20mA | ±(0.02%RD + 2μA) | 1nA | / | / | |
| DCV | 0~10V | ±(0.02%RD + 2mV) | 1μV | / | Input Impedance > 1MΩ | |
| Loop Power | Type: DC 24V; Max Load 60mA | |||||
| Temperature Switch | Type: Passive Switch; Temperature Switch, Liquid Level/Winding Thermostat, Pressure Thermometer, Bimetallic Thermometer | |||||
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