QTM-500 Rapid Thermal Conductivity Meter is a product used to measure thermal conductivity of various industrial materials, building materials, refractory materials, process materials, and food, etc. The instrument uses a hot wire method to measure, with a measurement range of 0.023～12W/mk, an accuracy error value of ±5%, and a repeatability error value of ±3%.
The QTM-500 rapid thermal conductivity meter is designed for quick measurement of thermal conductivity in industrial, building, refractory, process and food materials. It features an LCD screen with logarithmic time‑temperature curves, automatic current selection, and optional probes for thin films or powders.
The instrument operates from -10 °C to 200 °C, with a measurement range of 0.023–12 W/(m·K) and typical measurement time of about 60 seconds. It includes RS‑232C output, a PD‑11 box probe, and optional accessories such as PD‑13 insulated probe and soft‑ware for data collection. This manual is written in Chinese.
| Measurement range | 0.023–12 W/(m·K) |
|---|---|
| Temperature range | -10 °C to 200 °C |
| Standard measurement time | ≈60 seconds |
| Sensor | PD‑11 box probe with heating wire and chromel‑alumel thermocouple |
| Display | 30 characters × 7 lines LCD |
| External output | 2 RS‑232C channels, 1 thermoelectric power channel |
| Dimensions (main unit) | 300 mm × 475 mm × 175 mm |
| Operating temperature | 5 °C to 35 °C |
| Maximum humidity | <85 % RH |
The QTM-500 can measure thermal conductivity from 0.023 to 12 W/(m·K).
A standard measurement takes about 60 seconds when the sample is at steady state.
The instrument comes with a PD‑11 box probe that includes a heating wire and a chromel‑alumel thermocouple.
The QTM-500 operates on AC 100–240 V, 50/60 Hz and consumes 60 W.