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Rain, Leaf Wetness, Snow Sensors – Rika

Rain gauge is a meteorological instrument for determining the depth of precipitation (usually in mm) that occurs over a unit area (usually 1m2) and thus measuring rainfall amount. One millimetre of measured precipitation is the equivalent of one litre of rainfall per metre squared. We offer tipping bucket rain gauges, radar rain gauges, rain sensor switches and evaporation sensors, all of which are used in hydrometeorological monitoring and agriculture. Rainfall monitoring is very important in wide range of fields like meteorology, hydrology, agriculture, forestry, field monitoring stations and other industries, which enable people to prepare in advance. So we can imagine the importance of rain gauge. There are various types of rain gauge such as wireless rain gauge, tipping bucket rain gauge, automatic rain gauge station, etc.

Scroll down to browse for the sensor or instrument you need, or give us a call to discuss your needs.

Rika Rainfall Sensors

RK400-01 Tipping Bucket Rainfall Sensor


The RK400-01 Tipping Bucket Rainfall Sensor is an instrument for testing rainfall in the nature. In order to meet the requirement of information transmission, processing, recording and display, the amount of rainfall is converted to pulse output.
RK400-01 Tipping Bucket Rainfall Sensor
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RK400-01 Tipping Bucket Rainfall Sensor

The RK400-01 Tipping Bucket Rainfall Sensor is an instrument for testing rainfall in the nature. In order to meet the requirement of information transmission, processing, recording and display, the amount of rainfall is converted to pulse output. It can be widely used in weather stations, hydrometric stations, agriculture & forestry, defense & field monitoring stations. It can provide the original data for flood-prevention, water-supply system, and reservoir water management in plant.

Features:

  • Compact size for easy use
  • High accuracy, good stability
  • Mesh in the funnel preventing debris such as leaves and insects from entering the working of rain sensor(mesh is optional)
  • Well made tipping bucket with low resistance
  • Highly polished stainless steel construction
  • Horizontal Bubble in the bottom
  • Rain collector with filter, to prevent the leaves, such as debris jam over the hole
  • Optional heating function in cold region

Applications:

  • Water supply system
  • Hydrologic monitoring
  • Natural disaster monitoring
  • Agro-meteorological research
  • Climate research

Specifications:

Item Specification
Rainfall Collector diameter :φ200mm, height: 350mm
Measured rainfall intensity Max:4mm/min
Allow rainfall intensity Max:10mm/min
Resolution 0.1mm,0.2mm
Accuracy (2mm/min) ±4%
Maximum load voltage 30VDC(pulse output)
Maximum load current 20mA(pulse output)
Output Reed Switch Pulses, RS485(12-24VDC supply)
Operating temperature(no freeze) -20-+80℃
Main material Collector: 304SS, tipping bucket:ABS
Tipping bucket Single
Heating(optional) Heating power: approx.350W, Heating voltage:220VAC
Collector filter Removable filter (prevent leaves and sundries)optional
Weight(unpacked) 3.5kg

Working Process:

Rainfall is captured in the 200mm diameter collector funnel and is directed through a delivery pipe to fill a divided ABS injection molded tipping bucket device.The bucket is pivoted through its center and has a preset calibration to tip for 0.2 mm of rainfall. When the bucket is “full”, it pivots and empties – this action magnetically closes and opens a reed switch, sending a pulse signal to the data logger or electronic counter. Through this tipping “seesaw” action, the other side of the bucket is aligned to receive the flow from the delivery pipe. This recording and tipping cycle continues with rainfall.

 

Product Details:

 
Part No Product Details Price (ex-GST)
RK100-01 Tipping Bucked Rainfall Sensor
Material: 304SS
Range: ≤4mm/min
Resolution: 0.2mm
Accuracy: ±4%
Output signal: Pulses
434.53
RK100-01 Tipping Bucked Rainfall Sensor
Material: 304SS
Range: ≤4mm/min
Resolution: 0.2mm
Accuracy: ±4%
Output signal:RS485
Supply: 12-24VDC
483.71
 

Data sheet on RK400-01 Tipping Bucket Rainfall Sensor (pdf, opens in a new tab)

RK400-04 Economical Tipping Bucket Rain Gauge Rainfall Sensor


RK400-04 Economical Tipping Bucket Rainfall Sensor is a hydrology, meteorological instrument used to measure the nature of rainfall, and it converts the precipitation into a pulse signal output.
RK400-04 Economical Tipping Bucket Rain Gauge Rainfall Sensor
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RK400-04 Economical Tipping Bucket Rain Gauge Rainfall Sensor

RK400-04 Economical Tipping Bucket Rainfall Sensor is a hydrology, meteorological instrument used to measure the nature of rainfall, and it converts the precipitation into a pulse signal output. Designed with insect-proof nets, free blocking nozzle and built-in leveler. The model can be used in meteorology, hydrology, agriculture, forestry, field monitoring stations and other industries. Combined with rainfall recorder can be used to measure measure precipitation, precipitation intensity, precipitation time.

Features:

  • Compact size for easy use
  • High accuracy, good stability
  • Mesh in the funnel preventing debris such as leaves and insects from entering the working of rain sensor
  • Well made tipping bucket with low resistance
  • The main body made of high strength ABS
  • Horizontal Bubble in the bottom
  • Outlet with insect-proof screen

Applications:

  • Meteorological monitoring
  • Hydrologic monitoring
  • Natural disaster monitoring
  • Agrometeorological research
  • Climate research

Specifications:

Item Specification
Collector diameter :φ200mm, height: 271mm
Measured rainfall intensity Max:4mm/min
Allow rainfall intensity Max:8mm/min
Resolution 0.2mm
Accuracy(2mm/min) ±4%
Maximum load voltage 30VDC(pulse output)
Maximum load current 20mA
Output Pulses (@10kΩ&0.01uF), RS485 (12-24VDC supply)
Operating temperature 0-60℃@0%-100%RH
Main material Rainfall collector & tipping bucket: ABS, Supporting leg:304SS
Weight(unpacked) 2kg

Working Process:

Rainfall is captured in the 200mm diameter collector funnel and is directed through a delivery pipe to fill a divided ABS injection molded tipping bucket device. The bucket is pivoted through its center and has a preset calibration to tip for 0.2 mm of rainfall. When the bucket is “full”, it pivots and empties – this action magnetically closes and opens a reed switch, sending a pulse signal to the data logger or electronic counter. Through this tipping “seesaw” action, the other side of the bucket is aligned to receive the flow from the delivery pipe. This recording and tipping cycle continues with rainfall.

Dimension & Mounting:

Adjust the balance foot screws to ensure that it is in a horizontal position. Using three fastening screws to fix this three support legs at the platform to keep the entire apparatus at an optimum level , which ensure the accuracy of rainfall data.

Product Details:

Part No Product Detail Price (ex-GST)
RK400-04 Economical Tipping Bucked Rainfall Sensor
Material: ABS
Range: ≤4mm/min
Resolution: 0.2mm
Accuracy: ±4%
Output signal: Pulses
$249
RK400-04 Economical Tipping Bucked Rainfall Sensor
Material: ABS
Range: ≤4mm/min
Resolution: 0.2mm
Accuracy: ±4%
Output signal: RS485
Supply: 12-24VDC
293.71
 

Data sheet on RK400-04 Economical Tipping Bucket Rainfall Sensor (pdf, opens in a new tab)

RK400-02 Rain & Snow Sensor


RK400-02 Rain & Snow Sensor is a high sensitive detector to achieve qualitative detection of rain and snow. There is a ring conductor sense rain board on the surface.
RK400-01 Tipping Bucket Rainfall Sensor
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RK400-02 Rain & Snow Sensor

RK400-02 Rain & Snow Sensor is a high sensitive detector to achieve qualitative detection of rain and snow. There is a ring conductor sense rain board on the surface. Products are optional automatic melting snow and melting ice function (automatic heating). When it rains or snows, it will output switch signal.

Features:

  • Compact size for easy use
  • Auto-heating function
  • Excellent stability
  • High accuracy
  • Stainless steel Construction
  • Outlet with insect-proof

Applications:

  • Environmental monitoring
  • Greenhouse control system
  • Smart doors & windows
  • Smart light box
  • Livestock farm Intelligent building control system

Specifications:

Item Specifications
Supply Voltage 12-24VDC
Automatic heating heating power:10W max.
Output Relay(NO)
Load Capacity(relay) AC120V/2A ,DC24V/2A
Coil material Gold-plated(Strong corrosion resistance)
Ingress protection IP67
Operating Temperature -30℃-+70℃
Weight(unpacked) 150g
Dimension 90*60*40mm
Shell material ABS
Storage Condition 10℃-60℃@20%-90%RH

Product Details:

Part No Product Details Price (ex-GST)
RK400-02 “Rain & Snow Sensor
Shell material: ABS
Output signal: Relay
Supply: 12-24VDC
With automatic heating
IP67
$181.94

Data sheet on RK400-02 Rain & Snow Sensor (pdf, opens in a new tab)

RK300-04 Leaf Wetness Sensor Humidity Sensor



RK300-04 Leaf Wetness Sensor is an important tool for observing and studying leaf wetness, preventing pests and diseases, and spraying sprinkler control.
RK300-04 Leaf Wetness Sensor Humidity Sensor
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RK300-04 Leaf Wetness Sensor Humidity Sensor

RK300-04 Leaf Wetness Sensor is an important tool for observing and studying leaf wetness, preventing pests and diseases, and spraying sprinkler control. The accurate measurement of the moisture content of the leaf surface can be used to monitor the trace moisture or ice crystal residue. The shape of the sensor is simulated by the blade, which can simulate the characteristics of the leaf surface, so that it can reflect the situation of the leaf surface more accurately. By measuring the variation of the dielectric constant of the upper surface of the blade, the mist, water vapor and ice can be measured.

Features:

  • Reflect the water content of leaf
  • Fog, freezing, condensation and rainfall can be detected
  • Good waterproof sealing performance
  • High precision, fast response, reliable performance.
  • Multiple signal output options

Applications:

  • Research on the growth and development of crops
  • Prevention of pests and diseases and early warning
  • Foliar fertilization, spraying, spraying and irrigation control

Specifications:

Item Technical Specification
Range Wetness: 0-100% Temperature: -40-+80℃
Accuracy Wetness: ±3%(0-50%),±5%(>50%)
Repeatability <±3%FS
Temperature Drift ≤0.2%FS/℃
Supply 5VDC,12-24VDC
Output 4-20mA,0-5V,RS485
IP Rating IP65
Operating Temperature -40℃-+80℃
Dimension 65*13*145mm
Storage -40-70℃@20%-90%RH

Product Details:

 
Part No Product Detail Price (ex-GST)
RK300-04 Leaf Wetness Sensor
Wetness Range: 0-100%, Accuracy: ±3% (0-50%), ±5% (>50%)
Temperature Range: 40-80℃, Accuracy: ±0.5℃
Output: 4-20mA/0-5V/0-2V/RS485/SDI-12
Power supply: 5V/12-24VDC
$235.59

Data sheet on RK300-04 Leaf Wetness Sensor Humidity Sensor (pdf, opens in a new tab)

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