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Group Furnace Automatic Calibration System for Thermocouple and Resistance Temperature Detector

Group Furnace Automatic Calibration System for Thermocouple and Resistance Temperature Detector
Group Furnace Automatic Calibration System for Thermocouple and Resistance Temperature Detector
Group Furnace Automatic Calibration System for Thermocouple and Resistance Temperature Detector
Group Furnace Automatic Calibration System for Thermocouple and Resistance Temperature Detector
Product Features
Support single-furnace Automatic calibration system, double-furnace Automatic calibration system, group furnace Automatic calibration system。
It supports auto-tuning of the PID of the calibration furnace。
Support American Standard (AFS) standards for calibration.
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Description
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Overview  

    The DTZ-01 Thermocouple and RTD Automatic Calibration Systems are designed for the automatic calibration and verification of temperature sensors, including working thermocouples, industrial RTDs, liquid-in-glass thermometers, bimetallic thermometers, and pressure thermometers. The systems can simultaneously control 1 to 10 calibration furnaces, each capable of calibrating up to 10 thermocouples at once. The systems also support batch calibration of various platinum and copper RTDs, with a capacity of up to 100 sensors in a single operation, meeting high-throughput calibration needs.

    This system incorporates our company's proprietary technological innovations, with all software and hardware independently developed under exclusive intellectual property ownership. Featuring advanced design, rational structure, and user-friendly operation, it ensures accurate value transmission, strong anti-interference capability, and flexible configuration. The system automatically performs data acquisition, processing, storage, and generates verification/calibration certificates to significantly improve efficiency, providing comprehensive technical assurance.

 
The Functions of System Software

· System software supports single-furnace low-EMF scanners, dual-furnace low-EMF scanners, and multi-furnace low-EMF scanners.

· The systems support communication protocols for a variety of digital multimeters and high-precision thermometers.

· System software allows simultaneous, user-defined selection of different types of calibration furnaces and standard instruments.

· The systems support constant-temperature sources from different manufacturers, with user-selectable temperature control modes.

· Multiple thermocouple reference junction compensation methods are offered, including 0 °C thermostat compensation and automatic ambient temperature compensation.

· Temperature can be controlled using a standard thermocouple to improve accuracy, control speed, and stability.

· Power-off protection and calibration resumption prompts are available; after power is restored, the user can choose whether to continue the calibration process.

· Forced-calibration and over-temperature protection are featured to meet diverse customer testing requirements.

· The systems utilize advanced professional PID algorithms, supporting automatic PID tuning for calibration furnaces and automatic saving of parameters after tuning.

· Provides multimedia audible alarms and intelligent prompts during test startup, upon completion, and in case of errors.

· Supports automatic channel checking and filtering, with prompts for abnormal data after inspection.

· Electronic signature is supported.

· Automatically saves calibration data to the database upon completion.

· Supports grouped calibration: up to 100 RTDs can be calibrated in one session, divided into 10 groups for Pt10, Pt100, Pt-X, Cu50, Cu100, Cu-X industrial RTDs, improving testing efficiency.

· Allows input of transmitter information (0–10 mA, 4–20 mA, 1–5 V, etc.), with editable parameters including upper and lower temperature limits, accuracy, compensation wire type, and load resistance for current transmitters (default 250 Ω).

· Supports mixed calibration: each calibration furnace can be set with its own sensor type and quantity, allowing simultaneous calibration of different base-metal or noble-metal thermocouples in the same furnace, with automatic data processing and result determination.

· Displays a consolidated overview of multiple furnaces’ operating status, including current temperature, setpoint, rate of change, and progress.

· Enables fully automatic calibration, including automatic temperature control, data monitoring, data acquisition, and processing, with automatic generation of various reports and database storage; supports database search and retrieval.

· Meets or exceeds the requirements of JJF 1098-2003 Calibration Specification for Auto-measuring System of Thermocouples and Resistance Thermometers.

· Features integrated statistical management, multi-threaded design, compatibility, and self-diagnostic capability.

· Compatible with Windows 2000, XP, Windows 7, Windows 8, and Windows 10 operating systems; practical, professional, and open, supporting interfacing with equipment from multiple manufacturers.

· Core technology is independently developed with full intellectual property rights, based on national verification regulations and specifications, with dynamic simulation of calibration scenarios, providing comprehensive after-sales and upgrade support.

 
DTZ-01/02 System Functions
 

Verification/

calibration function

Type

Grade

Remarks

Standard Thermocouple

S, R, B

Grade 1/

Grade 2

Standard Thermocouple

 

Working thermocouple

S、R、short S、short R

Class I / Class II

Working Noble metal TC

B

Class II / Class III

 

K, N, E, J, T, EA-2 etc

Class 1/ Class 2

Base metal TC

WRe3-WRe25/

WRe5-WRe26

 

Working Tungsten-Rhenium TC

Industrial thermal resistor

Pt100, Pt10, Pt-X, Cu50,

Cu100, Cu-X

AA, A, B, C etc

Two-wire,three-wire, four-wire

Temperature transmitter

0-10mA, 4-20mA, 1-5V

 

Voltage type, current type

 

Noble Metal Thermocouple Wire

SP, SN, RP, RN

Standard (Grade 1/ Grade 2), Class I and Calss II

PtRh 10

PtRh 13

BP, BN

Standard (Primary/

Secondary), Class II, Class III

PtRh 30

Platinum-rhodium thermocouple filament

SP, SN (pure Pt)

RP, RN (pure Pt)

BP: PtRh 30,

 BN: PtRh 6

 

 

Base Metal Thermocouple Wire

KP, KN, NP, NN, JP, JN, EP, EN, TP, TN

Class I / Class II / Class III

Nickel-silicon alloy

Copper-silicon alloy

 
 
DTZ-01/02 Technical Parameters

Items

Indicators

Items

Indicators

Accuracy level

0.005%

Thermocouple cold junction compensation range

5~50 ℃

Scanner parasitic EMF potential

≤ 0.2 µV

Free end resolution

0.01 ℃

Inter-channel data acquisition deviationchannels

≤ 0.5 µV,1.0 mΩ

Thermocouple calibration furnace control capability

220 V,0~40 A

Measurement repeatability

≤ 1.0µV,3.0 mΩ

Set point deviation

≤ ± 0.1 ℃

Verification of measurement data processing results

≤ 0. 1µV,0.1mΩ

Total expanded uncertainty of the thermocouple system

≤ 0.68 ℃

Total expanded uncertainty of RTD system

Standard Platinum Resistance Thermometer (Rtp) — Measurement after rechecking with a triple-point-of-water cell:

RTD ≤ 0.03 °C (at 0 °C); 0.06 °C (at 100 °C)

Standard Platinum Resistance Thermometer (Rtp) — Using value from calibration certificate:

 RTD ≤ 0.05 °C (at 0 °C); 0.09 °C (at 100 °C)

Temperature stability of working thermocouple system

≤ 0.5 °C/6 min; measurement ≤ 0.1 °C/min

Temperature stability of industrial RTD system

≤ 0.01 °C/10 min; measurement ≤ 0.01 °C/min

 
 
 

 

Software Interface

Multimedia Audible Alarms

Electronic Signature

Calculation Process of the Uncertainty Component

               It supports verification in accordance with American standards.

Professional Edition Automatic Testing System

1.Automatically performs parasitic potential and channel-to-channel data difference tests in accordance with the Calibration Specification for Thermocouple and RTD Automatic Measuring Systems.
Meets the requirements of standard thermocouple Automatic measurement system, working thermocouple Automatic measurement system and industrial thermistor Automatic measurement system. Automatic data acquisition, Automatic calculation and judgement of results, objectively guaranteeing the accuracy and working efficiency of testing data.
2.Support to re-select the starting position of the test when continuing the test.     Support simulation test, convenient for system learning and demonstration Support exporting test data to Excel, WPS record file.
Intelligent test process control, Automatically complete the parasitic potential project test.
Intelligently guide the test of data difference between channels, and prompt the user to switch the signal source in time through pop-up window and voice.
3.Intelligent test process control, Automatically complete the parasitic potential project test.
Intelligently guide the test of data difference between channels, and prompt the user to switch the signal source in time through pop-up window and voice.
4.Real-time display of calibration data, easy to check the calibration data real-time storage, the system abnormal exit or manual stop, you can continue the data calibration.
5.Supports Automatic testing of all series of low potential scanners.        
Automatically performs channel data check, real-time communication check, abnormality alert, Automatic repeat test, and Automatic resumption of operation before test.
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