The CS700, manufactured by HS Hyquest Solutions, is a high-end tipping bucket rain gage with an 8 in. orifice and a heavy-duty cast aluminum base. It measures precipitation in 0.01 in. increments. The CS700 is ideal for locations where intense rainfall events may occur. This tipping bucket is compatible with all Campbell Scientific data loggers and is used in environmental monitoring applications.Read More
The CS700 funnels precipitation into a bucket mechanism that tips when filled to its calibrated level. Each tip is marked by a dual reed switch closure that is recorded by a data logger pulse count channel. After measurement, the water drains through two orifices (accepts 12 mm tubing) in the base, allowing the measured water to be collected in a separate container.
The CS700 contains an internal siphon mechanism that causes rain to flow at a steady rate to the tipping bucket mechanism (regardless of intensity). The siphon allows the sensor to make accurate measurements over a range of 0 to 50 cm per hour.
|Sensor Type||Tipping bucket with siphon and dual reed switch|
|Measurement Uncertainty||700 mm/h (27.6 in./h) maximum rate per hour|
|Rainfall per Tip||0.254 mm (0.01 in.)|
|Measurement Range||0 to 700 mm/h (0 to 27.6 in./h)|
|Operating Temperature Range||0° to 70°C|
|Humidity Range||0 to 100%|
|Cable Type||Two-conductor shielded|
|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|
Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.
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.
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.
Each tip of the CS700 is marked by a dual reed switch closure that is recorded by a data logger pulse count channel.
Number of FAQs related to CS700-L: 15
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The CM240 fits the CS700-L, TB4-L, and the retired 385-L rain gages.
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.
These rain gages can be connected to either.
The following are some suggestions to try:
If data is not being logged correctly, there are two likely causes:
Not registering any tips, missing tips, or double tips.
Not enough tips or too many tips.
When a rain gage is out of calibration, it is usually because of the buildup of dirt and grime on the internal surfaces of the tipping bucket mechanism. Cleaning the internal surfaces usually brings the rain gage back into calibration. It is also possible that a rain gage is out of calibration because it is no longer level.
To minimize the possible occurrence of calibration errors, perform routine cleaning and maintenance of the rain gage at least once every three months. The environmental conditions at a particular site may require a facility to perform cleaning, leveling, and maintenance on a much more frequent schedule.
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.