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Rain gauge with built-in RS-A/D converter (1.0mm only) 


1] WDC-2000 : Rain gauge with built-in RS-A/D converter (1.0mm only).
In parallel with the output signal, it can be output as a separate digital signal (BCD), directly connected to communication equipment, and transmitted.
2] WDCA-2000 : RS-A/D converter built-in rain gauge for AC 220V (1.0mm only).
3] WDCD-2000 : RS-A/D converter built-in DC 12V snowfall meter (1.0mm only).



▲ Fig.01　Converter Type Rain Gauge Specifications




▲ Fig.02　Internal structure of converter-type rain gage



▲ Fig.03　RS-A/D converter signal diagram



▲ Fig.04　Converter MS-24 Terminal Diagram
 
① Setting the route of observation equipment
　Among the observation equipment operated by solar cells, basic equipment (measuring, recording, BCD)
　other than communication equipment is operated as equipment operated independently in independent functions
　such as “non-powered” or “battery type”. By preventing mutual interference, preparing for battery and
　electronic errors, preventing data loss, and meeting the amount of reserve power, it should be the best
　in transmission by assisting to strengthen the function of communication equipment even in unexpected
　extremes of the monsoon season accompanied by typhoons and lightning strikes. .

② Outline
　The foundation of traditional equipment powered by solar batteries starts with the performance of
　a “rain meter”. In the unstable state of the state-of-the-art satellite system basic equipment,
　its function is unstable. This RS-A/D converter type rain gauge is the most perfect rain gauge so far
　with an advanced measurement method that perfectly supports the concerns.

③ Operating principle
　This device collects water through a water inlet with a diameter of 20cm, and when the amount in the
　measuring cup (tipping bucket) is 31.4 cc (1 mm), 1 pulse is generated by the reed switch of the sensor,
　recording, and the A/D converter gear by the falling force of the drained water is driven by 1 Bit (1mm),
　DIGITAL signal is provided directly to communication equipment as BCD code, so even if electromagnetic
　error is induced, measurement error does not occur, so panel operation value can be continuously observed,
　and DATA display is transparent. ※ There is no need to reset the measured value panel display as
　data fragmentation does not occur. Operate in parallel when necessary.

④ Function
　Reed switch in RS-A/D Converter converts physical analog rotation change into electrical code.
　Therefore, all displacement values that change during rotation are converted into digital signals
　by the converter without power. These change signals (BCD) are input as measured values or
　control values for computer control, display, and output equipment of various systems,
　and the 100m measurement accuracy has a reliability of 99.99%.

⑤ Characteristic
　1) Since the contact on the output side is a reed switch, the contact defect is very small and the life is long.
　2) Since the output side is optimally combined with the rotating part of the system,
　it is possible to select from various output codes.
　3) In the case of displaying error codes, checking bits are provided in each number (0 to 9)
　4) Busy signals are provided so there is no mistake in signal reading during switch operation.
　5) There is no need for a power supply for coding as commercial double brush switch circuitry is not required.
　6) It has a simple small appearance.
 
⑥ Specifications
　1) Water outlet: 200Ø International Meteorological Standards
　2) Body : 200Ø×500 stainless material
　3) Body fixing feet : 30×100 (c-shaped 3 foot fixed type)
　4) Windshield : 180×400Ø Ventilation hole 40 HOLE 4 foot body fixed type (optional)

⑦ Precautions for use
　1) Measuring accuracy : ± 000/999 mm continuous
　2) Insulation withstand voltage: DC 500V/minute between terminal and input side (megger)
　3) Insulation resistance : 20 mΩ or more between DC 500V terminal and input side (megger)
　4) Code contact capacity : 10VA (DC100V max, 0.5A max)
　5) Code exchange method : Signal Reeding System
　6) Output code : no voltage P-1-2-4-8
　7) Code conversion time : within about 200 msec ± 10 msec
　8) Contact Resistance : Less than 150 mΩ
　9) Contact voltage : DC 250V
　10) Output Signal : 3 Digit - 3 Data - Digital = BCD
　11) Rotation value : input side 1 rotation 10 mm
　12) Digital display: direct view of output value numbers (measurement standard)

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