北极星编码器
编码器（encoder）是将信号（如比特流）或数据进行编制、转换为可用以通讯、传输和存储的信号形式的设备。 编码器把角位移或直线位移转换成电信号，前者称为码盘，后者称为码尺．按照读出方式编码器可以分为接触式和非接触式两种．接触式采用电刷输出，一电刷接触导电区或绝缘区来表示代码的状态是"1”还是“0”；非接触式的接受敏感元件是光敏元件或磁敏元件，采用光敏元件时以透光区和不透光区来表示代码的状态是"1”还是"0”，通过"1”和“0”的二进制编码来将采集来的物理信号转换为机器码可读取的电信号用以通讯、传输和储存。
部分北极星编码器特性
| Available Resolution: | 60 to 2048 PPR; 120 KHz data & index |
Housing: | Cast Iron/Stainless Steel | |
Bore/Shaft Size: | 5/8" or 2 7/8"; up to 8.0" available | |
Input Power: | 5-15VDC or 15-26 VDC | |
Sensing Technology : | Magnetic Resonance (MR) | |
Enclosure Rating: | NEMA MG1 | |
Temperature: | -40°C to +80°C | |
Ideal For: | Mill duty applications and dirty environments using high horse power, large-shaft motors; ex-pulp / paper and crane & hoist |
| Available Resolution: | 60 to 2048 PPR; 120 KHz data & index |
Housing: | Cast Iron/Stainless Steel | |
Bore/Shaft Size: | 0.625" dia., 1.87" long single. Or double ended standard | |
Input Power: | 5-15VDC or 15-26 VDC | |
Sensing Technology : | Magnetic Resonance (MR) | |
Enclosure Rating: | NEMA MG1 | |
Temperature: | -40°C to +70°C | |
Ideal For: | Mill duty applications and dirty environments using high horse power, large-shaft motors; ex-process industry |
| Available Resolution: | 60 to 1200 PPR; 120 KHz data & index |
Housing: | Cast Iron/Stainless Steel; Thin pancake style construction | |
Bore/Shaft Size: | 5/8" or 2 7/8"; up to 3.75" available | |
Input Power: | 5-15 or 15-26 VDC | |
Sensing Technology: | Magnetic Resonance (MR) | |
Enclosure Rating: | NEMA MG1 | |
Temperature: | -40°C to +80°C | |
Ideal For: | Mill duty applications and dirty environments using high horse power, large-shaft motors; ex-paper and steel mills |
