TG 309 Libra Series

Vertical Design Combined with Top-Loading Ultra-Microbalance for Easy and Safe Handling

The design of the vacuum-tight TG 309 Libra® ensures free and safe access to the sample, easy crucible exchange (no hang-down wires or horizontal balance beam), and a constant and stable position for the sample carrier in the furnace. This results in homogeneous temperature distribution and high sample-to-sample reproducibility.

Magnetic Levitation for Interference-Free Determination of Sample Masses

The instrument can be raised using a magnetic levitation system (optional) that lifts and separates the instrument from the work bench. External influences from, for example, vibration or touching the instrument are eliminated; this reduces the number of measurements required to obtain reliable results.

Micro-Furnace – A Dynamic System for Efficient Laboratory Work

The low-volume furnace supports fast heating rates over the entire temperature range and fast ballistic cooling by chilling from 1100°C down to room temperature. The low purge gas flows ensure less dilution of the evolved gases (to be considered if coupling to evolved gas analysis is planned). The short gas path, low volume of the furnace and low dead volume above the sample help prevent condensation of the evolved gases in the furnace.

Precise Detection of Sample Temperature and c-DTA

The sample temperature is detected by a thermocouple in direct contact with the sample crucible. This ensures accurate reading of the sample temperature, makes it nearly independent from the atmosphere, gas flow or heating rate and enables determination of the calculated DTA signal, c-DTA.

This signal is ideal for easy temperature calibration and works by using melting standards. It also yields important information regarding endothermic and exothermic processes (e.g., melting or evaporation with mass loss).

Four Mass Flow Controllers – Switching and Mixing Gases Made Easy

The addition of a fourth mass flow controller allows for the simultaneous connection of different gases, such as nitrogen, oxygen and carbon dioxide, plus an inert gas. This feature streamlines gas switching and mixing, eliminating the need for changing and cleaning gas connections and thus resulting in significant time savings.

Safe and Easy Sample Handling

When the crucible is placed on the sample carrier, the microbalance is not affected because the carrier is lifted by an automatic hoisting device. Sample placement is therefore simple and user-friendly.