Fully Automatic Temperature Calibration System (with furnace & thermostatic bath)
Overview
The ATSL-RN Group-Control Thermal Automatic System (Fully Automatic Temperature Calibration System) is the latest product developed with imported advanced technology. Built around a high-end computer combined with a high-precision imported digital multimeter, an intelligent low-thermal-EMF scanning switch and management software, it is a measurement-and-control system operated entirely by mouse under Windows.
The computer displays in real time the control-temperature curve of the verification furnace (or oil/low-temperature bath), the measured temperature, verification run time, output power, cold-junction temperature and temperature fluctuation. It fully automates thermocouple and RTD verification—automatic temperature control, automatic verification, automatic data processing, automatic printing of results and automatic saving of heating curves—and processes data strictly per current national verification regulations, printing records and certificates and retaining raw data for future reference.
It can verify all types of industrial thermocouples and RTDs, second-class standard thermocouples, expansion thermometers, glass liquid-in-glass thermometers, bimetallic thermometers and pressure thermometers. Key specs:
- scanning-switch parasitic EMF ≤0.2 μV
- EMF measurement uncertainty ≤0.01% (error ≤±0.005%)
- resistance measurement uncertainty ≤0.01% (error ≤±0.01%)
- thermocouple verification uncertainty ≤1.2 °C, RTD verification uncertainty ≤0.05 °C
- resolution EMF 0.01 μV, resistance 0.01 mΩ
- temperature-control accuracy ±2 °C (thermocouple) / ±0.5 °C (RTD)
- post-stabilization furnace change rate ≤0.2 °C/min (thermocouple), bath ≤0.04 °C/10 min (RTD)
- verification temperature 300–1600 °C for thermocouples and -100–300 °C for low-temperature couples/RTDs
- each module verifies 1–10 sensors simultaneously
- average heating+verification time about 30 minutes.
It supports thermocouple graduations S, K, E, R, B, T, N, J and RTD graduations Pt100, Pt50, Pt10, Cu100, Cu50, BA1, BA2, G. It uses a Shimadzu SR23 controller with 10-segment PID, imported silver-plated low-EMF scanning switch (sealed against oxidation), imported thyristor with phase-shift triggering for stable, anti-interference control, plus auto-tuning/adaptive control, self-diagnosis and continue-after-interruption functions, standard or control-couple temperature control, complete protection (auto shut-off of the thyristor on over-temperature, broken/short couple, or PC/main-box crash), and a system-certification module.
Working conditions: ambient 20 °C ± 5 °C, humidity ≤75% RH, AC 220 V ± 10% 50 ± 1 Hz, grounding resistance ≤4 Ω. It complies with JJG 141-2000, JJG 351-1996, JJG 229-2010, JJG 130-2004, JJG 978-2003, JJG 310-2002, JJG 226-2001, JJG115-1999, JJG 75-1995, JJG 368-2000, JJF1098-2013, JJF1637-2017 and JJF 1262-2010, executing the ITS-90 international temperature scale.
Specifications
- Main use
- Fully automatic verification of industrial thermocouples & RTDs, second-class standard thermocouples, expansion / glass liquid-in-glass / bimetallic / pressure thermometers
- Reference standard
- JJG141-2000, JJG351-1996, JJG229-2010, JJG130-2004, JJG978-2003, JJG310-2002, JJG226-2001, JJG115-1999, JJG75-1995, JJG368-2000, JJF1098-2013, JJF1637-2017, JJF1262-2010; ITS-90
- Accuracy
- EMF measurement uncertainty ≤0.01% (error ≤±0.005%); resistance uncertainty ≤0.01% (error ≤±0.01%); thermocouple verification ≤1.2 °C; RTD verification ≤0.05 °C; scanning-switch parasitic EMF ≤0.2 μV
- Adjustment sensitivity
- EMF resolution 0.01 μV; resistance resolution 0.01 mΩ
- Measurement functions
- Thermocouple graduations S/K/E/R/B/T/N/J; RTD graduations Pt100/Pt50/Pt10/Cu100/Cu50/BA1/BA2/G; 2-, 3- and 4-wire RTD; zero / room-temp / auto cold-junction compensation
- Control performance
- Temperature range: thermocouples 300–1600 °C, low-temperature couples/RTD -100–300 °C; control accuracy ±2 °C (thermocouple) / ±0.5 °C (RTD); Shimaden SR23 10-segment PID; auto-tuning/adaptive; standard-couple or control-couple modes
- Stability
- After stabilization: furnace ≤0.2 °C/min (thermocouple); bath ≤0.04 °C/10 min (RTD); average heating + verification time ≈30 min
- Channels
- Each module verifies 1–10 sensors simultaneously (group control of multiple modules)
- Key functions
- Real-time control curve/temperature/run-time/power/cold-junction display; auto control, verification, data processing, result printing & heating-curve saving; system-certification module; continue-after-interruption; raw-record retention
- Protection
- Self-diagnosis; auto shut-off of thyristor on over-temperature, broken/short thermocouple, or PC/main-box crash; imported silver-plated sealed low-EMF scanning switch; imported phase-shift-triggered thyristor
- Working conditions
- Ambient 20 °C ± 5 °C; humidity ≤75% RH; power AC 220 V ± 10% 50 ± 1 Hz; grounding resistance ≤4 Ω; dust/corrosion-free, ventilated environment
- Compatible calibration equipment
- Verification furnace, low-temperature bath, oil bath; imported high-precision digital multimeter; main-control module cabinet; thermal-metrology management software