Product Introduction

DY-01 Thermocouple/Temperature Resistor Automatic Calibration System is a measurement and control system centered around a computer, equipped with an imported high-precision six-and-a-half-digit digital multimeter, a low-voltage scanning switch, and a main control box. Operators can conveniently perform the entire process using a mouse under the Chinese Windows XP/WIN7 operating system. The microcomputer system displays in real-time the temperature control curve, temperature values, and calibration time parameters of the calibration furnace (or oil tank, low-temperature tank, etc.). The system processes data in accordance with the current national metrological calibration regulations and can print various record forms and calibration certificates, as well as retain original records for future reference. The system fully automates the entire thermocouple and temperature resistor calibration process, including automatic temperature control, automatic calibration, automatic data processing, and automatic printing of calibration results. This significantly reduces the operator's labor intensity and improves the quality of the calibration work. The device also provides the certification program for the system and the data file management program, facilitating the operator's certification of the system and the archiving, retrieval, and inquiry of calibration results.

【Solution Discussion】

The equipment system utilizes integrated control, implemented by an intelligent temperature controller, to regulate the temperature of temperature-controlled devices (calibration furnaces, temperature baths). The electrical signals from the temperature sensors (resistances) of the calibration furnace (oil, water bath) are converted into digital quantities by a high-precision 7 1/2-digit multimeter and transmitted to the computer via the serial communication port. The computer monitors the temperature field of the temperature-controlled devices based on internal system protocols and calculates programs, ensuring that the controlled objects (calibration furnace or oil bath) are heated or cooled as required. Upon meeting the specified requirements, the signals of the tested sensors (resistances) are collected by switching through an intelligent multi-channel scanner, providing calibration results, which are simultaneously entered into the database for inquiry and statistics. During the calibration process, the computer should display various parameters in real-time. After completion of the calibration, various reports can be printed out via the printer.

Main Configuration

The DY-01 Intelligent Temperature Instrument Calibration System consists of the main control box, an imported 6 1/2-digit multimeter, a microcomputer system, calibration furnace, water tank, oil tank, thermal metrology management software, measurement wires, and communication wires, among other components.

1. Master Chassis: The master chassis is composed of sub-systems such as a low-voltage scanner/controller and a temperature controller. It features a low-voltage silver-plated scanner switch imported from Japan, which has minimal parasitic voltage and is stable; German-imported thyristors are used with phase-shifting triggering, ensuring stable temperature control and strong anti-interference capabilities; Swiss-imported connectors are used for the data cable and instrument connection, with gold-plated contact surfaces for minimal contact potential and reliable connections, quicker and more convenient than traditional terminal blocks; custom dual-shielded cables are used for stable and reliable data transmission with strong anti-interference properties.

2. Digital Meters: Standard electrical measuring instruments in this system, utilizing a U.S.-imported 6.5-digit multimeter, model KEITHLEY 2000. High precision and reliable stability.

3. Furnace Calibration: Temperature Range: 300℃～1200℃; Uniformity Length of Temperature Field: ≥40mm (or 60mm); Temperature Field Deviation: ≤0.8℃; Temperature Field Index: Deviation from temperature field geometry not exceeding 10mm; Temperature Gradient: Within ±20mm, the temperature gradient does not exceed 0.4℃/cm.

4. Oil Tank: Temperature Range: Room temperature +20℃ to 300℃; Horizontal temperature field difference: ≤±0.01℃; Vertical temperature field difference: ≤±0.02℃.

5. Sink: Temperature range: Room temperature +10℃ to 95℃; Horizontal temperature field ≤0.01℃; Vertical temperature field ≤0.01℃.

Execution Standard

The system's calibration procedures are strictly written and executed in accordance with national calibration regulations and adhere to the ITS-90 international temperature scale, meeting relevant standards and procedures:

JJG 141-2000 "Thermocouple for Working Use in Precious Metals"; JJG 351-1996 "Thermocouple for Working Use in Base Metals"; JJG 229-1998 "Industrial Platinum and Copper Resistance Thermometers"

JJG 130-2004 "Working Glass Liquid Thermometer"; JJG 978-2003 "High Glass Thermometer for Petroleum Use"

JJG 310-2002 Pressure-Temperature Gauge; JJG 226-2001 Bimetallic Temperature Gauge

JJF1098-2003 " Specification for Calibration of Automatic Measurement Systems for Thermocouples and Resistance Thermometers "

【Terms of Use】

Ambient Temperature: 20℃ ±3℃

2. Relative Humidity: ≤75% RH

3. Power Supply: AC 220V ±10%, 50±1Hz

4. Ground resistance requirement: ≤4Ω

5. High concentrations of dust and corrosive gases should not be present nearby; use and storage should not be carried out in flammable or explosive atmospheres, and adequate ventilation conditions must be provided.

Regulations and Standards

JJF1637-2017 Specification for Calibration of廉Metal Thermocouples

JJF 1098-2003 Specification for Calibration of Thermocouple and Resistance Temperature Detector Automatic Measuring Systems

JJG 141-2013 Specification for Verification of Industrial Precious Metal Thermocouples

JJG 130-2011 Specification for Calibration of Laboratory Glass Liquid Thermometers

JJF 1184-2007 Specification for Temperature Field Testing Technology of Thermocouple Calibrating Furnaces

JJG111-2019 Routine Inspection Code for Glass Thermometers

JJF 1262-2010 Specification for Calibration of armored thermocouples

JJG 229-2010规程 for Industrial Platinum and Copper Resistance Thermometers Calibration

JJF 1909-2021 Pressure-Type Thermometer Calibration Specification

JJG368-2000 Specification for Calibration of Copper-Nickel Thermocouples for Industrial Use

JJG668-1997 Specification for Calibration of Short Type Platinum-Rhodium 10-Platinum and Platinum-Rhodium 13-Platinum Thermocouples for Industrial Use

JJF 1183-2007 Temperature Transmitter Calibration Specification

JJF 1030-2010 Specifications for Technical Performance Testing of Constant Temperature Water Baths

JJG75-1995 Standard for Calibration of Type R and S Platinum Resistance Thermocouples

JJG161-2010规程 for Thermometer Verification

After-Sales Service

From the date of handover, free warranty for one year, with irregular inspections and lifetime service.

【Product Real Shots】