零件编号。2-8930-101, 2-8930-110, 2-8930-111,2-8930-116,2-8930-125,2-8930- 130 2-8930-131, 2-8930-132,2-8930-150, 2-8930-152
兼容：MX有源测压仪以太网IP网关
Features of the MX4A Vacuum Gauge
- 1E-3 to 1,000 Torr measurement range
- ±10% accuracy from 1E-2 to 1,000 Torr
- Analog 0 to 10 V DC output (configurable)
- RS-485 digital communications
- Switching set point outputs (configurable relay and open collector)
- Built-in color display
- Thermocouple/convection/Pirani technology
- 22 to 26 V DC supply voltage
- KF/NW, NPT, Conflat/CF, straight tube flanges and fittings
- DB15 electrical connector
- Friction fit sensor attachment for easy replacement
- 4 touch controls on top of the unit
- Vertical mounting required for accuracy above 1 Torr
Benefits of the MX4A Vacuum Gauge
- 低成本数字真空计
- Compact digital vacuum gauge
- ISO 17025 accredited and NIST traceable calibrations available
- Quick turn-around for calibration and service of vacuum gauges
- 优秀的真空计客户支持
Summary of the MX4A Vacuum Gauge
The Televac® MX4A Active Vacuum Gauge uses a Televac® 4A convection vacuum gauge. It has a 1*10-3 to 1,000 Torr vacuum measurement range. It also has RS-485 communications, two adjustable set points, and a configurable 0 to 10 V DC analog output. This vacuum gauge is also sometimes called a Pirani vacuum gauge. Other names include digital vacuum gauge and analog vacuum gauge.
Additional Features
The bright color OLED display makes it easy to read from a distance. Settings on this gauge are configurable from four touch controls on the top of the unit. All features accessible through the front panel are also configurable through RS-485 communications. EthernetIP is also an option if you add an MX EthernetIP Gateway. This vacuum gauge is available with many flanges and fittings. These include KF/NW, NPT, Conflat/CF, and straight tube.
Electrical Information, Set Points, Overpressure, and Bakeout
The electrical connector is a D-Sub 15 (DB15) male. The vacuum gauge operates on 22 to 26 V DC with power draw up to 8 W (0.33 A). One of the set points is an electromechanical relay and the other is an open collector. These set point outputs are configurable to switch anywhere within the range of the gauge (1*10-3 to 1,000 Torr ). The gauge has an overpressure limit of 150 PSI. It is also rated for bakeout temperatures up to 200 °C (392 °F) with the electronics removed.
Certifications, Compliance, and Common Uses
This vacuum gauge is CE certified to EN 61010-1, EN 61326-1, and EN 55011. It also has CAN/CSA C22.2 No. 61010-1-12 and EAC certification, and is RoHS and REACH compliant. It is intended for use in any non-corrosive environment, and includes built-in gas correction factors. Common applications include vacuum furnaces, heat treat, thin film deposition, and many others.
MX4A Measurement Technology and Gas Dependence
The MX4A vacuum gauge measures pressure using thermal conductivity measurements from a filament. Heat loss from the heated filament correlates to pressure. Heat loss from the heated filament correlates to pressure. Different gases have different thermal conductivity characteristics. This means that MX4A measurements are gas dependent. The MX4A has built in gas correction factors for air, nitrogen, and argon.
校准
The MX4A comes with standard electrical factory calibration. NIST traceable and ISO/IEC 17025 accredited calibration is also available. You can request calibration of your gauge on our website here.
MX4A对流主动真空计
D-Sub 15，15导体电缆（飞线）。
D-Sub 15，6 芯电缆（飞线）
墙式电源
更换传感器
| 工作范围 | 1*10-4托尔至1000托尔。 |
| 显示 | 有机发光二极管 |
| 数字通信 | RS-485 |
| 模拟输出 | 可选 0 V DC 至 10 V DC |
| 可编程设置点 | 2 |
| 设定点1 | 开放式收集器 |
| 设定点2 | 中继 |
| 电源电压 | 22 V DC 至 26 V DC |
| 最大功率 | 8 W |
| 校准介质 | 干燥空气或氮气 |
| 过压 | 150 PSI |
| 数字输出分辨率 | 2个有指数的重要数字 |
| 模拟输出分辨率 | 16位 |
| 操作温度 | 0℃至50℃ |
| 储存温度 | -20℃至60℃ |
| 烘烤温度 | |
| 黄铜 (PN: -110, -116, -125) | 100 °C（电子元件拆除） |
| 不锈钢（PN：所有其他） | 200 °C（电子元件拆除） |
| 显示可读距离 | 3米（10英尺） |
| 精度（垂直安装） | |
| 0.1 mTorr至1 mTorr。 | 0.1毫托尔分辨率 |
| 1 mTorr至10 mTorr | ±1 mTorr |
| 10 mTorr至1000 Torr | 读数的±10% |
| 模拟输出 | ±10 mV |
| 针脚 | 说明 |
| 1 | 模拟输出（接地） |
| 2 | RS-485 A (-) |
| 3 | SP2 NC |
| 4 | SP2 NO |
| 5 | SP1 开路漏极 |
| 6 | 浮动 |
| 7 | 浮动 |
| 8 | 电源电压 (+) |
| 9 | 模拟输出（0 至 10） V |
| 10 | RS-485 B (+) |
| 11 | SP2 Com |
| 12 | SP1 数据源 |
| 13 | 浮动 |
| 14 | 浮动 |
| 15 | 电源电压 (-) |
MX4A 有两个设置点。设置点 1 是一个 N 沟道 60 V MOSFET 开路集电极。其最大额定电流为 1 A。数据表可在www.vishay.com/en/product/69958 上找到。
设置点 2 是一个继电器，其最大开关电压为 220 V 直流（250 V 交流），最大开关电流为 2 A。数据表可在www.te.com/catalog/pn/en/1393788-3 上找到。
| MX4A PN：-110、-116、-125 | MX4A PN：所有其他 |
| 镍 | 镍 |
| 玻璃 | 玻璃 |
| 金色 | 金色 |
| 托菲特 | 托菲特 |
| Cupron | Cupron |
| 焊接 | 不锈钢 |
| 住房 | 铝合金 |
| 电气连接 | D-Sub 15 针公头 |
| 带传感器重量（典型值） | 350 克（0.77 磅） |
| 不含传感器的重量 | 200 克（0.44 磅） |
| 通过 CAN/CSA C22.2 第 61010-1-12 号认证 |
| 通过 CE 认证，符合 EN 61010-1、EN 61236-1、EN 55011 标准 |
| 符合 RoHS 标准 |
| IP40 |
| 通过 EAC 认证 |
| 可选择 ISO 17025 认证的校准 |
| 可选择NIST可追溯校准 |
产品文档
| MX4A数据表 |
| MX4A说明书 |
| Televac®️真空校准公差 |
3D 模型（STEP 文件）
| 2-8930-125 - MX4A NW25/KF25 镀镍黄铜 |
| 2-8930-131 - MX4A NW25/KF25 不锈钢 |
| 2-8930-152 - MX4A CF40/2.75″ CF-F 不锈钢 |
应用说明
| Televac®应用说明 3000：MX 系列替代 MP 系列有源压力表 |
| Televac®应用说明 3001：MX2A 和 MX4A 有源压力表的比较 |
| Televac®应用说明 3015：真空校准推荐实践 |
| Televac®应用说明 3022：使用 MX2A/MX4A 自动控制 MP7ER/MP7FR |
| Televac®应用说明 3023：用 MX2A/MX4A 自动控制 MX7B/MX7M |
录像
| MX4A 产品概览视频 |
| MX4A 演示视频 |
| MX2A/MX4A 传感器更换视频 |
工具类
| Televac®真空测量转换器 |
| 网络串行终端 |
案例研究
| 案例研究。阿贡国家实验室 |
宣传册
| Televac®️真空测量产品目录 |
| 真空炉全方位解决方案手册 |
MX4A 对流主动真空计
真空计数量折扣
| 数量 | 折扣 |
| 1 | 列表 |
| 5 | 2% |
| 10 | 5% |
| 15 | 7% |
| 20 | 10% |
| 25 | 13% |
| 30+ | 15% |
D-Sub 15 电缆数量折扣
| 数量 | 折扣 |
| 1 | 列表 |
| 50 | 5% |
| 75 | 10% |
| 100+ | 15% |