适合高雨强的降水，即使是冰冻的环境
概览
CS700H为高档的加热的翻斗式雨量计，带有8英寸的集雨口和重载的铸铝底座。以0.01英寸的增量测量降水，可承受低至 -20°C的低温环境。CS700H加热式雨量计适合高强度降雨的站点，可用于环境监测的应用中。
优势与特点
- 超重的金属结构，持久性更好，更长的使用寿命
- 低功耗
- 更精确的测量高强度的降雨
- 高精密度 — 0.01-英寸 刻度增量
- 精度为 ±3%，在500 毫米/小时的大强度降雨条件下
- 加热器单元既可以使用电池，也可以使用交流电源供电
图像
技术说明
CS700H的集雨斗将降水收集到经过校准的翻斗上，每一次翻斗产生一个开关脉冲信号，并被数据采集器的脉冲计数通道所记录。在测量之后，雨水从两个小孔（可接12 mm的管路）流入底座中，可被收集在单独的容器中。
CS700H含有一个内部的虹吸装置，可让降水以稳定的速度流地翻斗（与降水无关）。虹吸方法可以CS700H在 0 to 50 cm每小时的降水量程内进行精确的测量。
CS700H含有一个内部的雪传感器，在空气温度降到 4°C以下时会启动。雪传感器探测落在集雨斗内的雪花，并自动打开加热单元，让集雨斗保持在 +10°C。为了节约供电，如果在18分钟内没有检测到雪花，加热器会进入到等候状态。当气温降到 -20°C以下时，加热器也会自动关闭。
产品规格
| Sensor Type | Tipping bucket with siphon and dual reed switch |
| Measurement Uncertainty |
|
| Measurement Uncertainty | 700 mm/h (27.6 in./h) maximum rate per hour |
| Rainfall per Tip | 0.01 in. (0.254 mm) |
| Measurement Range | 0 to 700 mm/h (0 to 27.6 in./h) |
| Humidity Range | 0 to 100% |
| Cable Type | Two-conductor shielded |
| Operating Temperature Range |
|
| Output | SDI-12 |
| Total Current Consumption |
|
| Main Power Voltage Requirements | 10 to 30 Vdc or 12 to 28 Vac |
| SDI-12 Power Voltage Requirements | 9.6 to 16 Vdc |
| Drain Tube Size | Both filters accept 12 mm (0.47 in.) ID tubing. |
| Orifice Diameter | 20 cm (7.9 in.) |
| Height | 34.2 cm (13.5 in.) |
| Weight | 3.3 kg (7.4 lb) with 7.62-m (25-ft) cable |
CS700H-AC Option Only |
|
| -NOTE- | Additional specifications are provided in Phoenix Contact’s manual for the Quint-PS/1AC/24DC/10. |
| Model Name | Quint-PS/1AC/24DC/10 |
| AC Input Voltage Range | 100 to 240 Vac |
| Power Consumption |
|
| Protective Circuitry | Transient Surge Protection Varistor |
| Integrated Input Fuse | 6.3 A (slow blow, internal) |
| Normal Output Voltage | 24 Vdc ±1% |
兼容性
Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.
数据采集器
| Product | Compatible | Note |
|---|---|---|
| CR1000X | ||
| CR300 | ||
| CR3000 (retired) | ||
| CR310 | ||
| CR350 | ||
| CR6 | ||
| CR800 (retired) | ||
| CR850 (retired) |
Additional Compatibility Information
Power Considerations
The CS700H has two power configuration options (either AC or DC). With the AC option, a Phoenix Contact Power Supply is shipped with the CS700H. With the DC option, the CS700H is connected to a user-supplied battery. This option is ideal for remote sites using wind or solar power to recharge the battery. Battery capacity requirements vary according to the application and site location.
Mounting
The base of the gage is supported by three legs. A CM240 Leveling Base and Mount or a user-supplied baseplate with leveling capability is recommended. The CM240 may be attached to a CM300-series mounting pole, or to a user-supplied 1.5 IPS (1.9-inch outer diameter, unthreaded) pipe (see Ordering Information). A concrete pad is recommended.
Wind Screen
Campbell Scientific offers the 260-953 Wind Screen to help minimize the affect of wind on the rain measurements. This wind screen consists of 32 leaves that hang freely and swing as the wind moves past them.
常见问题解答
CS700H-L: 12
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The CS700H-L has three heating elements to prevent the formation of icicles. Two of the heaters are on the base of the funnel, and one is on the base of the bucket. Because of the heating elements, this sensor requires a power supply of approximately 5 A. The SDI-12 interface of the sensor controls the heaters to come on only when needed.
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These high-end rain gages are used in applications where preservation of life is a priority, such as mine safety, dam safety, flood control, and slope stability.
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The following are some suggestions to try:
- Check that there is a solid connection to the reed switch. The screws should be tight, and the wires should have a solid connection to the screws.
- Try switching the connection from the current reed switch being used to the secondary reed switch connection.
- Check that the cable is connected to the correct input on the data logger. Take the two wires on the other end of the cable (the sensor side) and touch them together. The data logger should register a tip. If the tip registers, the issue is with the reed switch. Replace the reed switch.
- If the data logger still doesn't register a tip, try using a different cable.
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These rain gages don’t necessarily generate a voltage range, but rather a pulse. Depending on how the rain gage is connected to the data logger, the gage can generate a sourcing current or a sinking current pulse.
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These rain gages can be connected to either.
- When a control port is used, one lead goes to the 5 V port to provide current, and the other lead goes to a control port to detect the current.
- When a pulse channel is used, one lead goes to the pulse port, and the other lead terminates on a ground terminal.
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If data is not being logged correctly, there are two likely causes:
- The reed switch has failed.
- There is a faulty connection from the rain gage to the data logger, typically caused by a broken conductor or corroded wiring.
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Not registering any tips, missing tips, or double tips.
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- Remove the housing assembly from the base by removing the three screws and lifting upward on the housing.
- Check the bubble level to verify the rain gage is level.
- Pour water through the inner funnel to wet the two bucket surfaces. Using a graduated cylinder, slowly pour 314 cc (19.16 in3) of water, over a 15 minute period, into the collection funnel. This volume of water is equal to 0.39 inches of rainfall (10 mm).
- After the water has passed through the rain gage, the tipping bucket should have tipped 39 times for the TB4-L or CS700-L, or 50 times for the TB4MM-L.
- If the rain gage fails to record the correct number of tips, return the unit to Campbell Scientific for recalibration.
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Not enough tips or too many tips.
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The most common errors are either that the rain gage appears to have drifted out of calibration or that the tips are not being correctly recorded by the data logger.