KR-718 Integrated STA Synchronous Thermal Analyzer (TGA/DTA/DSC All-In-One)
RT-718A OIT-500A Plastic Oxidative Induction Time Tester
Oxidative Induction Time Tester is used to measure the oxidative induction time (OIT) of plastic or rubber materials.
Product Details：
Product Overview
The KR-718 synchronous thermal analysis instrument integrates three core thermal detection technologies: thermogravimetry (TGA), differential thermal analysis (DTA) and differential scanning calorimetry (DSC). It completes synchronous collection of sample weight loss curve, heat flow difference curve and temperature change curve under identical heating & atmosphere conditions in a single test run, realizing one-machine multi-functional thermal characterization for polymer, rubber, composite and inorganic raw materials.
This equipment is also equipped with dedicated OIT oxidative induction time test module, fully compliant with GB/T 17391, ISO 11357-6 and ASTM D3895 standards. It can rapidly evaluate material anti-oxidation aging performance, thermal decomposition temperature, melting & crystallization enthalpy, filler content and residual ash ratio, widely used in plastic pipe factories, cable material labs, new composite R&D institutions and CNAS certified testing centers.
Core Product Competitive Advantages
- Real Synchronous Dual-Signal Acquisition, Eliminate Test Deviation
Unlike split single-function thermal testers which require separate specimen testing, this unit detects mass variation and thermal effect signals simultaneously on the same sample. It avoids inconsistent results caused by different sample batches, heating environments or atmosphere conditions, enabling intuitive correlation analysis between weight loss and endothermic/exothermic reactions for accurate material thermal mechanism interpretation.
- Low-Inert Miniature Heating Furnace, Ultra-Precise Temperature Control
Adopts compact low thermal lag furnace cavity structure with segmented PID closed-loop temperature regulation, temperature fluctuation controlled within ±0.1℃. Adjustable heating rate ranges from 0.1~80℃/min, supporting slow scanning for phase transition observation and fast temperature rise for accelerated aging simulation. Dual independent temperature sensors separately monitor furnace cavity ambient temperature and real sample surface temperature to eliminate temperature reading errors.
- Fully Automatic Dual-Gas Switch Atmosphere Control System
Independent nitrogen and oxygen two-channel gas circuit with precision flow regulators, supporting one-click automatic gas switching programmed in test recipes. Standard OIT test workflow can be fully automated: nitrogen constant-temperature holding stage then auto-switch to oxygen atmosphere without manual valve operation, stable gas flow avoids premature sample oxidation during inert protection period. Complete exhaust purification structure prevents corrosive pyrolysis fume from corroding internal components.
- High-Sensitivity DTA Heat Flow Detection Unit
Ultra-low noise thermal sensing chip with DTA resolution up to 0.01μV, detection range ±10~±2000μV, capable of capturing faint heat signals from low-dose additive reaction and micro-phase transition. Two standard crucible specifications (0.06ml / 0.12ml) are matched, adapting trace micro-samples and medium-volume bulk specimens respectively to meet different test demands.
- Intelligent Curve Auto-Analysis Software
Large LCD touch terminal displays real-time test data and three overlay curves (TG/DTA/DSC) synchronously. Built-in automatic calculation algorithm automatically draws tangent lines, marks oxidation onset intersection points and computes OIT induction time value without manual graph marking. The system auto-stores all test data and generates standardized editable inspection reports with one-click export function.
- Integrated Anti-Interference Circuit Layout
All sensor signal lines adopt shielding wiring design to reduce external electromagnetic interference and signal attenuation. Modular split structure facilitates daily disassembly cleaning of furnace cavity and crucible support frame; over-temperature, gas shortage and abnormal weight loss multi-layer safety alarm system automatically cuts heating power to protect equipment and samples during unattended long-cycle testing.
Complete Technical Parameter Specification Table
| Parameter Item | KR-718 Standard Configuration |
|---|---|
| Full Temperature Working Scope | Ambient temperature ~ 1150℃ |
| Constant Temperature Control Accuracy | ±0.1℃ |
| Programmable Heating Speed | 0.1 ~ 80℃/min stepless adjustable |
| DTA Signal Detection Range | ±10μV ~ ±2000μV |
| DTA Minimum Resolution | 0.01μV, noise value ＜0.01μV |
| Standard Crucible Volumes | 0.06ml / 0.12ml dual specifications |
| Atmosphere Control Mode | N₂/O₂ automatic program switching, dual independent flow channels |
| Test Function Modules | TGA thermal weight loss / DTA differential heat / DSC calorimetry / OIT oxidation induction time |
| Data Output Method | On-screen real-time display, automatic curve fitting, one-click report generation |
| Control Terminal | Large-size industrial LCD touch screen |
Standard OIT Oxidation Induction Time Test Standard Workflow
- Equipment Preheating & Gas Circuit Inspection
Turn on instrument power, preheat furnace cavity to standby temperature, check nitrogen and oxygen pipeline pressure stability, calibrate gas flow rate according standard test recipe.
- Specimen Loading & Crucible Placement
Cut polymer sample into thin uniform slices, weigh quantitative specimen and place into standard crucible, lock crucible support bracket inside the furnace heating zone.
- OIT Test Program Setup
Select built-in standard polyolefin test procedure: heat up at 20℃/min to 200℃, hold constant temperature for 7 minutes under nitrogen protection, set automatic oxygen switching timing parameter and save the recipe.
- Automatic Constant-Temperature Aging Test
The equipment executes full unattended cycle: nitrogen inert heat preservation stage → auto switch oxygen atmosphere, the sensor continuously records heat flow change curve to capture oxidation exothermic mutation point.
- Automatic OIT Data Calculation
After test completion, the system automatically draws tangent auxiliary lines on the heat curve, calculates the time interval between oxygen switching and oxidation starting point to output accurate oxidative induction time value.
- Furnace Cooling & Post-Test Cleaning
Cool furnace cavity below safe temperature, take out crucible and clear residual pyrolysis residues, close gas supply valves and cut main power for daily storage.
Multi-Scenario Industry Application Fields
Plastic Pipe & HDPE Raw Material Factories
PE80/PE100 water/gas pipeline materials, cross-linked polyethylene raw materials; OIT test evaluates long-term underground anti-oxidation service life, optimize antioxidant additive proportion formula.
Wire & Cable Insulation Manufacturers
PE, PP cable insulation and sheath materials; comply with GB/T 2951 standard aging testing to avoid cable cracking failure under long-term high-temperature operation.
Rubber & Elastomer R&D Labs
Natural rubber, TPE thermoplastic elastomer formulations; test thermal decomposition temperature and oxidation resistance to predict product storage stability.
Biodegradable Polymer Research Institutes
PLA, PBAT degradable composite materials; use TGA weight loss curve to analyze filler content and thermal degradation temperature window.
Third-Party Material Certification Institutions
Complete standardized thermal performance testing complying with ISO and national plastic standards, issue official test reports for product market access and factory batch inspection.
Standard Factory Full Delivery Kit
- KR-718 synchronous TGA/DTA/DSC thermal analyzer main furnace & control host
- Dual-channel nitrogen & oxygen gas flow control assembly with complete pipeline fittings
- Standard high-temperature resistant crucible set (0.06ml + 0.12ml multiple spare pieces)
- Dual independent temperature sensing detection module
- Large LCD touch intelligent control system with built-in analysis software
- Furnace cavity cleaning tools and high-temperature wiping accessories
- Multilingual operation manual aligned with OIT and thermal analysis international standards
- Factory temperature & signal calibration inspection qualification certificate
Global Distributor & After-Sales Support
We provide one-on-one remote test operation training and OIT standard parameter debugging guidance, with long-term stable supply of spare crucibles, temperature sensors and heating furnace components. Custom high-temperature upgraded versions and overseas 60Hz voltage conversion power modules are available for bulk purchase orders. Exclusive regional agent policies include priority production scheduling, OEM private brand customization and complete HD product marketing image packages.
English Overlay Text For Product Pictures
Main Banner Title: KR-718 TGA/DTA/DSC Synchronous Thermal Analyzer with OIT Test Module
Control Panel Tags: TEMP PROGRAM / GAS SWITCH / CURVE ANALYSIS / OIT CALC / REPORT EXPORT
Feature Overlay Tags: 3-in-1 STA Design / ±0.1℃ Precise Temp / Auto N₂-O₂ Switch / High Sensitivity DTA / Standard OIT Function
Safety Operation Tip: Cut Off Gas Supply Before Opening High-Temperature Furnace Cavity
Build Your Market with DGKAREY
KAREY products are trusted by customers across more than 100 countries, supporting long-term business growth in the testing equipment industry.
We are now seeking reliable partners to represent our brand in their local markets.
As an authorized distributor, you will receive dedicated regional support, ensuring a stable and protected business environment.
Your orders will be handled with priority, and our team will assist you with tailored equipment solutions based on your market needs.
From initial cooperation to ongoing development, we work closely with you to strengthen your presence and competitiveness.
DGKAREY – Your Reliable Partner in Global Supply
We go beyond supplying testing equipment. Our team manages the full journey — from export procedures to delivery at your door — ensuring efficiency, transparency, and peace of mind.
Related products
-
KR-727 High-Voltage Leakage Tracking & Erosion Resistance Tester (IEC 60587 Standard)
-
KR-710 UL94 Horizontal & Vertical Integrated Flammability Test Chamber
-
KR-709 Automatic V-Notch Specimen Milling Machine
-
KR-708 Multi-Station Hydraulic Hose Hydrostatic Burst & Pressure Resistance Tester
-
KR-706 Max 2000mm Vertical Falling Ball Impact Tester
-
KR-110D Compact Bench-Top Two Roll Mixer (Lab Open Mill)
-
KR-703C Auto Weight Loading MFR & MVR Extrusion Plastometer
-
KR-701B Benchtop Dual-Mode Melt Flow Index Tester (MFR & MVR)