SCHMIDT® Flow Sensor SS 20.400 - Flow Sensors for Laboratory, Pharmaceutical and Clean Room Technology
SCHMIDT® Flow Sensor SS 20.400 - Flow Sensors for Laboratory, Pharmaceutical and Clean Room Technology. Measuring quantity Standard flow velocity wN, based on standa
Product Overview
The SCHMIDT® Flow Sensor SS 20.400 is part of the SCHMIDT Flow Sensors for Laboratory, Pharmaceutical and Clean Room Technology line. Thermal flow velocity sensor for uni- or bidirectional measurement of air and gases with simultaneous detection of flow direction. Thermopile head (very fast response time)Flow velocity and switching signalsProbe length 130 ... 300 mmMeasuring ranges 0 ... We supply genuine, brand-new SCHMIDT Technology products with selection support, technical documentation and stable supply.
Specifications
| 测量量 / Measuring quantity | Standard flow velocity wN, based on standard conditions 1)技术参数 |
|---|---|
| 被测介质 / Measured medium | Clean air or nitrogen, additional gases on request技术参数 |
| 量程 / Measuring range wN | (±)0 ... 1 / 2.5 / 5 / 10 / 20 m/s (uni- or bidirectional)技术参数 |
| 最低检出限 / Lower detection limit wN | (±)0.05 m/s技术参数 |
| 测量精度（标准） / Standard wN | ±(3 % of measured value + [2 % of fmr; min. 0.05 m/s]) 2)测量精度 |
| 测量精度（高精度可选） / High precision (optional) wN | ±(1 % of measured value + [2 % of fmr; min. 0.04 m/s]) 2)测量精度 |
| 响应时间 / Response time (t90) wN | 1 s (configurable: 0.01 ... 10 s)测量精度 |
| Sensor | 0 ... +60 °C工作温度 |
| 存储温度 / Storage temperature | -20 ... +85 °C工作温度 |
| 传感器头部 / Sensor head | Stainless steel 1.4404材质 |
| 传感器管 / Sensor tube | Stainless steel 1.4404材质 |
| Plug-in connector, nut screw | Stainless steel 1.4404材质 |
| 湿度 / Humidity | Measuring mode: Non-condensing (< 95 % RH)通用参数 |
| 工作压力 / Operating pressure | Atmospheric (700 ... 1.300 hPa)通用参数 |
| 供电电压 / Supply voltage | 12 ... 26.4 V DC通用参数 |
| 电流消耗 / Current consumption | Typical < 35 mA (max. 150 mA, current of switching outputs included)通用参数 |
| Analog output wN | 0 ... 10 V (RL > 10 kohm; CL <= 10 nF; short-circuit protected) | 4 ... 20 mA (RL < 300 ohm; CL <= 100 nF)通用参数 |
| Switching outputs | 2 x open collector (at GND), current-limited and short-circuit protected, configurable | -Channel 1 (OC1): Flow direction or threshold value | - Channel 2 (OC2): Threshold value | - External switching voltage / current: Max. 26.4 V DC / 55 mA (typ. 50 mA) | - Hysteresis: 5 % of threshold value (min. ±0.05 m/s)通用参数 |
| 电气连接 / Electrical connection | Plug-in-connector M9, male, 7-pin (shielded), screwed通用参数 |
| 最大电缆长度 / Maximum cable length | Voltage interface: 10 m; current interface: 100 m通用参数 |
| 安装位置 / Mounting position | ±3° relative to flow direction (uni- or bidirectional)通用参数 |
| 防护等级 / Protection type | Sensor probe: IP66; electrical connector: IP67 (with correct attached cable)通用参数 |
| 防护等级 / Protection class | III (SELV or PELV)通用参数 |
| Sensor length L | 130/200/300 mm通用参数 |
| 重量 / Weight | Approx. 60 g max. (L = 300 mm)通用参数 |
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