説明
Historically the 2A thermocouple sensor had a measurement range up to only 20 Torr and the 4A convection sensor was used to measure pressures up to 1000 Torr. Software and drive signal enhancements incorporated into the MX2A active thermocouple gauge now allow the 2A thermocouple sensor to measure pressures up to 1000 Torr. This has raised questions about the differences between the MX2A thermocouple active gauge and the MX4A active convection active gauge as almost all of their specifications are now identical. This document outlines the differences between the two active gauges.
MX2AとMX4Aの違い
| 説明 | エムエックスツーエー | エムエックスフォーエー |
| センサタイプ | 熱電対 | 対流 |
| フィラメント径 | 厚みのあるもの | 薄型化 |
| 耐汚染性 | より高い | 下 |
| 応答時間 | <2 seconds | <1 second |
| 精度 | ±30% (10～100 Torr) | ±10% (10～100 Torr) |
| 真空にさらされる材料 | NiMnSi合金、CuNiMn合金 | NiCr合金、CuNi合金 |
| コスト | 最低 | 低 |
