ZRJ series intelligent thermal instrument verification system integrates software, hardware, engineering and service. After more than 30 years of market tests, it has long been at the forefront of the...
ZRJ series intelligent thermal instrument verification system integrates software, hardware, engineering and service. After more than 30 years of market tests, it has long been at the forefront of the industry in terms of software and hardware level, product quality, after-sales service, and market ownership, and has been widely accepted by customers. It has played an important role in the field of temperature measurement for a long time.
The new-generation ZRJ-23 series intelligent thermal instrument verification system is the latest member of the ZRJ series products, which greatly simplifies the composition of the traditional thermocouple and thermal resistance verification systems. The PR160 reference standard scanner with excellent electrical performance is used as the the core, which can be expanded up to 80 sub-channels, can be flexibly combined with various temperature sources to meet the verification/calibration requirements of various thermocouples, thermal resistances and temperature transmitters. It is not only suitable for new laboratories, but also very suitable for traditional temperature laboratory upgrading their equipment.
Applied Patented Technology: ZL 2015 1 0534149.2 ZL 2016 1 0001918.7 ZL 2018 1 1642519.4
Keywords
l A New Generation of Thermocouple, RTD Verification System
l Enhanced Standard Temperature Control
l Composite Switch Structure
l Accuracy Better than 40ppm
Typical Application
n Calibrate Standard Thermocouples using the Homonymous Pole Method or Dual-polarity Method
n Verification/Calibration of Base Metal Thermocouples
n Verification/Calibration of RTD of Various Grades
n Calibrating the Integral Temperature Transmitter
n Calibrating Thermocouple Wires
n Calibrating HART Type Temperature Transmitters
n Mixed Verification/Calibration of Temperature Sensors
Mixed Verification/Calibration of Thermocouple & RTD
Dual Furnace Thermocouple Verification/Calibration
Group Furnace Thermocouple Verification/Calibration
I. Brand New Hardware Design
The new-generation ZRJ-23 system is the crystallization of years of technical development. Compared with the traditional thermocouple/thermal resistance verification system, its scanner structure, bus topology, electrical measurement standard and other key components are all newly designed, rich in functions, novel in structure, and highly expandable.
1. Hardware Technical Features
█ Compact Structure
The core control unit integrates a scanner, a thermometer, and a terminal block, and is equipped with a constant temperature chamber for the thermometer, so there is no need to set up a constant temperature room for the electrical standard. Compared with the traditional thermocouple and RTD verification system, it has fewer leads, a clearer structure, and saves space.
▲ Core Control Unit
█ Composite Scan Switch
Featuring both high performance and versatile functions. The main scanning switch adopts a mechanical switch made of tellurium-copper plated with silver, which has extremely low parasitic potential and contact resistance. The function switch uses low-potential relays, allowing independent configuration of up to 10 switch combination states.
▲ Composite Scan Switch
█ Enhanced Standard Temperature Control
The scanner integrates a dual-channel temperature control unit with voltage compensation function. It can use the temperature value of the standard and the tested channel to perform hybrid constant temperature control through the decoupling algorithm. Compared with the traditional temperature control method, it can greatly improve the temperature control accuracy and effectively shorten the waiting time for thermal equilibrium at constant temperature.
█ Supports Homonymous Pole Method to Verify Thermocouples
Through the logical coordination between the PR160 series scanners and the PR293A thermometers, the homonymous pole method can be used to verify noble metal thermocouples and standard thermocouples.
█ Professional & Flexible Reference Junction Options
Optional options include ice point compensation, external reference junction, mini thermocouple plug, or intelligent reference junction. The intelligent reference junction is built with a temperature sensor featuring correction values and made of tellurium-copper. It can be split into two independent clamps, whose unique jaw design allows easy clamping of conventional wires and nuts, making the handling of the reference junction no longer cumbersome.
▲ Schematic Diagram of the Intelligent Reference Junction
█ Symmetric On-Resistance Characteristics
Enables batch calibration of multiple three-wire secondary instruments without additional wiring conversions.
█ Professional Transmitter Calibration Mode
Built-in 24V output, supports batch calibration of voltage-type or current-type integrated temperature transmitters. Featuring a unique design for current-mode transmitters, the patrol inspection of the current signal can be carried out without disconnecting the current loop.
█ Press-Type Multifunctional Tellurium-Copper Terminal
Using tellurium-copper gold plating process, it has excellent electrical connection performance and provides a variety of wire connection methods.
█ Rich Temperature Measurement Functions
The electrical measuring standard adopts PR291 and PR293 series thermometers, which have rich temperature measurement functions, 40ppm electrical measurement accuracy, and 2 or 5 measurement channels.
█ Constant Temperature Chamber for Thermometer with Constant Temperature Heating and Cooling Capability
To meet the requirements of various regulations and standards for the ambient temperature of electrical measurement standards, a constant temperature chamber for thermometer is integrated. It features constant temperature heating and cooling capabilities, and can provide a stable 23℃ working environment for the thermometer in an external environment of -10~30℃.
▲ Constant Temperature Chamber for Thermometer
2. Scanner Function
3. Channel Function
II. Excellent Software Platform
The supporting software for the ZRJ series products has obvious comprehensive advantages. It is not merely a tool software that can perform verification or calibration in accordance with existing regulations and standards, but a software platform composed of multiple powerful specialized software for temperature metrology. Its professionalism, ease of use, and operability have been recognized by numerous customers in the industry, and it can provide great convenience for customers' daily verification/calibration work.
1. Software Technical Features
█ Professional Uncertainty Analysis Function
The evaluation software can automatically calculate the uncertainty values, degrees of freedom and expanded uncertainty of each standard, and generate a summary table of uncertainty components as well as an uncertainty evaluation and analysis report. After the verification is completed, the actual expanded uncertainty of the verification result can be automatically calculated, and a summary table of the uncertainty components of each verification point can be automatically drawn.
█ New Constant Temperature Assessment Algorithm
The new algorithm takes the uncertainty analysis as a reference, according to the repeatability ratio of the calibrated thermocouple’s reasonable measurement data, the repeatability standard deviation that the calculation system should achieve is used as the basis for judging the timing of data collection, making it highly suitable for cases where the thermocouples are relatively thick or there are multiple calibrated thermocouples.
█ Comprehensive Data Analysis Function
During the verification or calibration process, the system will automatically perform statistics and analysis on real-time data and provide contents including temperature deviation, measurement repeatability, fluctuation level, external interference, and adaptability of adjustment parameters.
█ Professional and Rich Report Output Function
The software can automatically generate verification records in Chinese and English, support digital signatures, and can provide users with certificates in various formats such as verification, calibration, and customization.
█ Smart Cloud Metrology
The Panran Smart Metrology APP enables remote operation or status checks of current tasks. Operational data is uploaded to the cloud server in real time, and users can conduct visual monitoring of the site via the intelligent camera. Additionally, the APP integrates a variety of tool software to facilitate operations such as temperature conversion and regulation specification queries for users.
█ Mixed Verification Function
Based on multi-channel nanovolt and microhm thermometer and scanning switch unit, the software can realize multi-furnace thermocouple group control and mixed verification/calibration tasks of thermocouple and RTD.
▲ Working Thermocouple Verification Software
▲ Professional Report, Certificate Output
2. Verification Calibration Function List
3. Other Software Functions
III. Technical Parameters
1. Metrological Technical Parameters Related to the Scanner
2. Scanner General Parameters
3. Standard Temperature Control Technical Parameters
II. Typical Configuration
ZRJ-23 series intelligent thermal instrument verification system has excellent equipment compatibility and extensibility, and can support various types of electrical measuring instruments for RS232, GPIB, RS485, and CAN bus communication by adding drivers.
█ Core Configuration
Note 1: When using dual-channel standard temperature control, the number of calibrated channels of each group of scanners should be subtracted by 1 channel, and this channel will be used for the standard temperature control function.
Note 2: The maximum number of supported calibration furnaces refers to the number of calibration furnaces that can be independently operated when standard temperature control is used. The calibration furnaces with their own temperature control are not subject to this restriction.
Note 3: When using homonymous pole method to verify the standard thermocouple, the PR293A thermometer must be selected.
Note 4: The above configuration is the recommended configuration and can be adjusted according to the actual usage.
Note 5: ○ Optional supporting equipment; ● Recommended supporting equipment.
Changsha Panran Technology Co., Ltd.