Rain, Leaf Wetness, Snow Sensors – Rika

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	Please enquire
RK100-01	Tipping Bucked Rainfall Sensor Material: 304SS Range: ≤4mm/min Resolution: 0.2mm Accuracy: ±4% Output signal:RS485 Supply: 12-24VDC	Please enquire

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

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	Please enquire
RK400-04	Economical Tipping Bucked Rainfall Sensor Material: ABS Range: ≤4mm/min Resolution: 0.2mm Accuracy: ±4% Output signal: RS485 Supply: 12-24VDC	Please enquire

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

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	Please enquire

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

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	Please enquire

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