Flow Switch SS 20.200
SCHMIDT® Flow Switch SS 20.200 - Flow Sensors and Accessories
SCHMIDT® Flow Switch SS 20.200 - Flow Sensors and Accessories. Measuring quantity Standard flow velocity wN based on standard conditions 1), Measured medium Air or n
Product Overview
The SCHMIDT® Flow Switch SS 20.200 is part of the SCHMIDT Flow Sensors and Accessories line. Thermal Flow Switch for monitoring of flow rate of air and gases. Patented sensor head (dumb-bell head): - Largely independent from flow direction - Easy to clean (free of undercuts) - Dirt-resistantProbe length 100 ... 500 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 | Air or nitrogen, other gases on request技术参数 |
| 量程 / Measuring range wN | 0 ... 1 / 2.5 / 10 / 20 m/s技术参数 |
| 最低检出限 / Lower detection limit wN | 0.06 m/s技术参数 |
| Threshold wN | 5 ... 95 % of measurement range (min. 0.1 m/s)技术参数 |
| Threshold setting wN | Potentiometer (270°)>br>Optionally pre-programmed by factory (potentiometer deactivated)技术参数 |
| Switching hysteresis wN | ±5 % of threshold value; min. 0.1 m/s测量精度 |
| Setting switching threshold wN | Potentiometer (270°); optionally fix pre-programmed测量精度 |
| Threshold pre-programmed wN | ±3 % of measuring value + 0.1 m/s 2)测量精度 |
| 响应时间 / Response time (t90) wN | 3 s (jump of wN from 0 to 5 m/s in air)测量精度 |
| Switch-on delay | 20 s测量精度 |
| 温度梯度 / Temperature gradient wN | < 2 K/min (at wN = 5 m/s in air)测量精度 |
| Sensor | -20 ... +85 °C工作温度 |
| Electronics | -20 ... +70 °C工作温度 |
| 存储温度 / Storage temperature | -20 ... +85 °C工作温度 |
| 外壳 / Enclosure | PBT (glass-fibre reinforced)材质 |
| 传感器管 / Sensor tube | Stainless steel 1.4571材质 |
| 传感器头部 / Sensor head | PBT (glass-fibre reinforced), stainless steel 1.4571材质 |
| 防护涂层 / Protective coating (optional) | Polyurethane derivative材质 |
| 传感器电缆 / Sensor cable | PVC材质 |
| 湿度 / Humidity | Measuring mode: Non-condensing (< 95 % RH)通用参数 |
| 工作压力 / Operating pressure (max.) | 0 ... 10 bar (overpressure)通用参数 |
| 显示 / Display | LED green: Operating status; | LED red: Switching status / sensor defective通用参数 |
| 供电电压 / Supply voltage | 24 V DC ± 20 %通用参数 |
| 电流消耗 / Current consumption | Typical 40 mA (max. 70 mA, without signal current of relais output)通用参数 |
| Switching output | Semiconductor relais; max. 30 V / 100 mA / 300 mW RON,max = 25 ohm通用参数 |
| 电气连接 / Electrical connection | Non-detachable cable, 4 wires, length 2 m, with ferrules通用参数 |
| 最大电缆长度 / Maximum cable length | 100 m max.通用参数 |
| 安装位置 / Mounting position | Arbitrary通用参数 |
| 最小插入深度 / Minimum immersion depth | 58 mm (< 58 mm on request)通用参数 |
| 防护等级 / Protection type | Sensor probe: IP67; Enclosure: IP65 (with installed rubber plug)通用参数 |
| 防护等级 / Protection class | III (SELV or PELV)通用参数 |
| MTTF value (per 01.01.2011) | > 50 years通用参数 |
| 探头长度 / Probe length L | 100/200/350/500 mm通用参数 |
| 重量 / Weight | Approx. 100 g (L = 350 mm)通用参数 |
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