four zones tube furnace
1200度四温区管式炉
1200度四温区实验管式炉为实验室用小型多温区高温管式电阻炉。四温区实验管式炉有四个温区分别由四个独立的温控系统来控制且都为PID30段程序化控温。可通过调节四个温区的控温程序使炉管内温场形成一温度梯度，炉管两端装有不锈钢法兰，不锈钢法兰上安装有气嘴、阀门和压力表，抽真空时真空度能够达到10-3 Pa。
The four temperature zone experimental tubular furnace is a multi temperature zone high temperature tubular resistance furnace produced by sigma high temperature electric furnace. The four temperature zone experimental tubular furnace has four temperature zones, which are controlled by four independent temperature control systems, and all of them are programmed temperature control in pid30 section. By adjusting the temperature control procedures of the four temperature zones, the temperature field in the furnace tube can form a temperature gradient. Stainless steel flanges are installed at both ends of the furnace tube, and gas nozzles, valves and pressure gauges are installed on the stainless steel flanges. The vacuum degree can reach 10-3 PA during vacuum pumping.
管式炉可以预抽真空并能通氢气、氩气、氮气、氧气、一氧化碳、氨分解气等气体,具有温场均衡、表面温度低、升降温度速率快、节能等优点。入保护气体时候，需确保进出气阀门同时打开，防止保护管内压力过大，造成炉管破裂；
The tubular furnace can pre vacuum and pass hydrogen, argon, nitrogen, oxygen, carbon monoxide, ammonia decomposition gas and other gases. It has the advantages of balanced temperature field, low surface temperature, fast temperature rise and fall rate, energy saving and so on. When feeding shielding gas, ensure that the inlet and outlet valves are opened at the same time to prevent excessive pressure in the protection pipe from causing furnace pipe rupture;
主要特点Main features:
1、The furnace is made of high-quality immature alumina polycrystalline fiber,
炉膛材料采用优质的幼稚氧化铝多晶纤维砌筑而成，
2、 Can control the four heating zones with four control point
四点控温，四段加热区可独立控制
3、Chamber veined with 12 sets of resistance wire, achieve uniform tem. field and longer constant zone.
炉膛上下各6组电阻丝，温场均匀，恒温区更长。
4、Equipped with support frame for flange, reduce the load of tube body
法兰两端配备支撑架，减轻管体的负荷。
5、Pneumatic spring for opening, which is safer for operator.
气动弹簧支撑结构让操作者可安全开启。
6、Open type make convenient for operation
开启式让操作更方便
技术参数Technical Parameters
| 电炉名称 | 1200度四温区管式炉 1200℃ The four zone tubular furnace |
| Working Temperature 工作温度 | · Max. Temperature: 1200 °C ( 1 hr) 设计温度：1200℃ (1小时) · Continuous working temperature: ≤1100℃ 持续工作温度：≤1100℃ · Max. heating Rate: ≤30°C /min 升温速率：≤30℃/分 |
| 控温方式 | · PID automatic control and auto-tune function. 模糊PID控制和自整定调节 · 30 programmable segments for precise thermal processing. 智能化30段可编程控制 · Built-in protection for the over-heated and broken thermocouple. 超温和断偶报警功能 |
| Length of heating zone 加热区长度 | · 200+200+200+200mm |
| Length of constant zone 恒温区长度 | · 100+200+200+100mm |
| Heating Elements 加热元件 | · Resistance wire, Fe-Cr-Al Alloy doped by Mo · 电阻丝（掺钼铁铬铝合金） |
| Temperature Accuracy 控温精度 | +/- 1 °C |
| Dimensions 尺寸 | · Tube size: Φ50/60/80/100/130*1400mm (optional) · 炉管尺寸：Φ50/60/80/100/130*1400mm (可选) · Overall size: 1080*440*590mm(L*W*H without tube & flange) · 外形尺寸：1080*440*590mm(L*W*H 不含炉管和法兰) · Two fibrous ceramic tube blocks are included for blocking heat radiation generated from tube center. (Ceramic blocks must be fully inserted into the furnace chamber before heating). · 两个氧化铝管堵阻挡管中心产生的热辐射（氧化铝管堵必须在加热前塞进炉膛） |
| Power 输入电源 | · Power rated: 7KW (208-240V) · 额定功率：7KW (208-240V) |
| Voltage 电压 | · Voltage rated: AC208-240V 50/60HZ · 额定电压： AC208-240V 50/60HZ |
| Net Weight 净重 | 90kg |
| Vacuum Flange 真空法兰 | · KF25 quick clamp flange KF25快速卡箍法兰 |
| Vacuum Pressure 真空压力 | · 10^-1pa can be achieved by mechanical pump 机械泵可达10^-1pa · 10^-3pa can be reached by molecular pump 分子泵可达10^-3pa |
| Warranty 质保 | One year limited warranty with lifetime support (Such consumable parts as tube, quartz block, and O-rings, etc. are NOT supported by the warranty) 一年质保终身支持（消耗品如炉管，石英管堵，O型圈等不在质保范围内） |
| Warning 注意事项 | · Toxic or explosive gasses are not recommended for use with this furnace without necessary safety controls and supervision. Please put furnace into fume hood for better safety · 没有安全控制和监督的情况下，不建议使用有毒或爆炸性气体。为了安全，请把炉子放在通风处。 · Small cracks may appear on the surface of the refractory ceramics over extended use. This is a normal occurrence and the cracks may be repaired with alumina coating. · 在使用过程中炉膛表面可能出现细小裂纹。这是正常情况，裂纹可以用氧化铝涂层修复。 |
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