Model

KTL1700

Power

3 kW

Chamber Dimensions (D×W×H)

160 × 150 × 150 mm

Overall Dimensions (W×D×H)

(not specified)

Power Supply Voltage

220V, single phase

Heating Elements

1800-type molybdenum disilicide (MoSi₂) rods

Main Features

Dual-use (box or tube). Can be evacuated or used under protective atmosphere.
Maximum temperature 1700°C.

Corundum Tube Dimensions

Dia 50 × 390 mm

Control Method

Yudian program temperature controller (standard).
1. 50-segment program control with intelligent PID adjustment.
2. Over-temperature protection and broken thermocouple protection – heating circuit automatically cuts off (when furnace temperature exceeds 1700°C or thermocouple breaks, the AC relay on the main circuit disconnects, ON lamp goes out, OFF lamp lights up – effectively protecting the furnace).
3. Equipped with RS485 communication interface (standard when software is purchased).
4. Power-off protection: after power failure and restart, the program starts from the furnace temperature at the time of power failure, not from the initial temperature.
5. The instrument has an autotuning function.

(Upgrading to imported instruments requires additional cost – optional)

 FP93 from Shinko (Japan), Eurotherm, or touch-screen controller

Chamber Material

1800-type alumina polycrystalline fiber (Al-O- content >95%)

Control Accuracy

±1°C

Maximum Temperature

1700°C

Rated Temperature

1650°C

Thermocouple Type

Type B

Trigger Type

Phase-shift triggering (with soft start and current limiting function).
Current limiting: regardless of how the ramp rate is adjusted, the secondary current (after the transformer) is limited to ≤160 A, effectively protecting the equipment against operator error.
Soft start: current increases gradually at startup, reducing thermal shock to the heating elements and extending their service life.

Maximum Heating Rate

≤20°C/min

Recommended Heating Rate

≤10°C/min

Safety Protection System

Equipped with a fuse and an air circuit breaker. When the current exceeds the rated value, the breaker automatically trips, effectively protecting the furnace.

Door Open Protection System

Equipped with a limit switch – the main heating circuit is automatically cut off when the furnace door is opened.

SCR (Thyristor)

Siemens Semikron 106/16E (Germany)

External Surface Temperature

≤35°C

Warranty

One-year warranty, lifetime technical support.
Special note: consumable parts such as heating elements and sample crucibles are not covered.
Damage caused by the use of corrosive gases is not covered.

Important Notes

1. For safety, place the furnace in a well-ventilated area.
2. To extend furnace service life, we recommend a heating rate not exceeding 10°C/min and a cooling rate not exceeding 5°C/min.
3. This furnace is not vacuum-tight; do not introduce toxic or explosive gases.
4. Do not place samples directly on the bottom brick; always use a proper crucible.
5. During heating, ensure that samples and crucibles do not touch the heating elements or thermocouple.
6. If the furnace has not been used for a long time, perform a baking (drying) procedure before reuse.