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Water level measurement
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Level gauge for non-voltage BCD 4-digit output (0000 to 9999 display) 


- A water level gauge that rotates and induces the displacement of the water level (dam, river, reservoir, underground water, etc.) with the buoyancy of the float and outputs and displays it as a digital BCD signal through the RS-A/D converter.


▲ Fig.01　Water level gauge installation drawing



▲ Fig.01　Water level recorder specifications

▲ Fig.02　Inside picture of water level gauge


▲ Fig.03　RS-A/D converter appearance and specifications



▲ Fig.04　Water level gauge side / float and weight



▲ Fig.05　Converter signal diagram and connector terminal diagram



▲ Fig.06　Water level gauge installation drawing



▲ Fig.07　Water level recorder specifications
 

▲ Fig.08　Water tower installation drawing
 
① Outline
1) A floating water level gauge that rotates a pulley by using the buoyancy value of the float to change the water level of dams, rivers, reservoirs, underground water, etc., converts the corresponding analog signal into a digital signal without power, and transmits it as a BCD code.
2) It is a transmission function type that is directly connected to communication equipment and does not generate deviation (reliability: 99.9% / 100M). It is a product designed to be optimal for unmanned observation conditions by suppressing power consumption and requiring no correction device.

② RS-A/D Converter Overview
1) The measuring device is prepared for electrical and electronic accidents, so the installation and maintenance are very economical.
2) BCD conversion value is output without power, there is no transmission (T/M) error, and if there is a digital signal input code, it is operated immediately after connection.
3) To display additionally on a specific panel, use Signal Distrbuter or Signal Arrester Unit.
4) RS-A/D Converter output signal is 4 digits and there is 1 BUSY signal in addition to 4 Data + 4 Parity.
5) Checking bit is provided in each number (0 ~ 9) in case of error code display.
6) There is no error in signal reading because the BUSY signal is provided.

③ Recorder Parts and Consumables Basic Specifications
1) Recording paper : 1 piece (inserted into the body), for 3 months recording
2) Recording pen : 1 cm pen, 1 m pen (inserted into the body)
3) Ball wire : Ø1.5mm, length 25m, 1 pc, stainless steel
4) Clip : 2 (for fixing the ball wire)
5) Pulley : Diameter Ø32.3cm, water level 100cm per rotation (5Ø divided into 5 equal parts in V-shaped groove)
6) Output code : No-voltage P-1-2-4-8 / BUSY=BCD signal
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 : 4 Digit 4 Data-Digital-BCD
11) Rotation value : 10 cm per 1 rotation on the input side (100 cm per 1 rotation of the pulley)
12) Torque : 130 ∼ 200 gr/cm
13) Direction of Rotation : Number increases when rotating counterclockwise (CCW) facing the axis
14) Allowable rotational speed : 200 rpm
15) Digital display : Directly look at output value numbers (measurement standard/very important)

④ Water level gauge
1) Measurement method : RS-A/D Converter 4 Digit Non-voltage BCD output
2) Measurement range : 0000 ∼ 9999 cm, 10 cm/converter 1 rotation
3) Measurement accuracy : 99.9% / 100M (non-powered)
4) Measured value display : output value numeric display function (convenient maintenance)
5) Body size : 350×240×200 (W×H×D mm), dustproof aluminum box type
6) Pulley : 320 Ø, 1 rotation 100cm (5 Ø 5 equally divided holes in V-shaped groove)
7) Float : Diameter 20 cm, top shape, weight 1.5 Kg
8) Weight : Diameter 4.5 cm×98 cm / 1Kg (stainless steel)
9) Ball wire : 1.5 mm in diameter, 4Ø ball fixation at 20 cm intervals on stainless steel wire
10) Body fixation : 4 rubber foot rotation leveling function (desktop type)
 
① Outline
1) This WDRP-200 water level gauge records the displacement of water level (dam, river, reservoir, underground water, etc.) for a long period of time (3 months) with cm pen and m pen on roll recording paper by rotating and inducing the recorder wheel with the buoyancy force of the float. ) is an unmanned recording instrument.
2) Since actual measurement is recorded by independent function without external interference, it is not affected by electricity, so there is no electronic failure and there is no concern about data loss due to recording error.

② Recorder specifications
1) Gauge : 380×230×275 (W×H×D mm), weight 15Kg, dustproof aluminum case
2) Pulley : Diameter Ø32.3cm, water level 100cm per rotation (5Ø divided into 5 equal parts in V-shaped groove)
3) Buzzer (Float) : Diameter Ø20cm, stainless steel, weight 1.5Kg (float)
4) Weight : diameter Ø4.5cm length 9.8cm stainless steel, weight 1Kg (weight)
5) Ball wire : Ø4mm stainless steel ball fixed at 20cm intervals to Ø1.5cm diameter stainless steel wire
6) Recording paper transfer : crystal oscillation rotary clock (for 1.5V medium-sized R14 battery)
7) Recording paper : Recording paper effective width 20cm, Suyeon 62 type magnetic water level gauge (6mm/h)
8) Recording date : 3 months, 1 hour, 1 block down
9) Recording pen : “cm” pen length 6mm, “m” pen length 20mm, used for about 3 months
10) Measurement range : 20m (between the lowest water level and the highest water level)
11) Degree : within 3 months ± 15 minutes

③ Recorder Parts and Consumables Basic Specifications
1) Recording paper : 1 piece (inserted into the body), for 3 months recording
2) Recording pen : 1 cm pen, 1 m pen (inserted into the body)
3) Ball wire : Ø1.5mm, length 25m, 1 pc, stainless steel
4) Clip : 2 (for fixing the ball wire)
5) Pulley : Diameter Ø32.3cm, water level 100cm per rotation (5Ø divided into 5 equal parts in V-shaped groove)
6) Buzzer (Float) : Diameter Ø20cm, Stainless, Weight 1.5Kg
7) Weight: Diameter Ø4.5cm, Length 9.8cm Stainless, Weight 1Kg
8) Battery : Built-in 1.5V medium (R14) battery
① Outline
1) This WDRP-2000 water level gauge with a built-in RS-A/D converter measures the displacement of the water level (dam, river, reservoir, underground water, etc.) with the buoyancy force of the float by rotating and inducing the wheel of the recorder with a cm pen on the roll recorder. It is an instrument that records unattended for a long period of time (3 months) with and m-pen.
2) Since actual measurement is recorded by independent function without external interference, it is not affected by electricity, so there is no electronic failure and there is no concern about data loss due to recording error.

② RS-A/D converter
1) Built-in RS-A/D converter inside the recorder, outputs the measured value as a non-voltage 4-digit BCD signal, and can be used immediately by directly connecting to T/M, RTU, etc. in parallel with recording.
2) Outputs BCD conversion value without power, and operates immediately when connected if there is a digital signal input code.
3) To display additionally on a specific panel, use a Signal Distributer or Signal Arrester Unit.
4) The output signal is 4 Digit, and there is 1 BUSY signal in addition to 4 Data + 4 Parity.
5) In case of checking bit error code display, it is provided in each (0~9).
6) There is no error in signal reading because the BUSY signal is provided.
7) For details, refer to the RS-A/D Converter(Click) among the products.

③ Recorder and RS-A/D converter general information
1) Recording function: The feature of the floating recording device is that it is recorded as a single function without external interference, so it is not affected by electricity, so there is no electronic failure and there is no concern about data loss due to recording errors.
2) BCD signal: RS-A/D converter is installed in parallel with the recording function, analog is output as a digital non-voltage BCD signal, and transmission error does not occur because there is no electrical or electronic error as it is directly supplied to T/M.

④ Recorder specifications
1) Gauge : 380×230×275 (W×H×D mm), weight 15Kg, dustproof aluminum case
2) Pulley : Diameter Ø32.3cm, water level 100cm per rotation (5Ø divided into 5 equal parts in V-shaped groove)
3) Buzzer (Float) : Diameter Ø20cm, stainless steel, weight 1.5Kg (float)
4) Weight : diameter Ø4.5cm length 9.8cm stainless steel, weight 1Kg (weight)
5) Ball wire : Ø4mm stainless steel ball fixed at 20cm intervals to Ø1.5cm diameter stainless steel wire
6) Recording paper transfer : crystal oscillation rotary clock (for 1.5V medium-sized R14 battery)
7) Recording paper : Recording paper effective width 20cm, Suyeon 62 type magnetic water level gauge (6mm/h)
8) Recording date : 3 months, 1 hour, 1 block down
9) Recording pen : “cm” pen length 6mm, “m” pen length 20mm, used for about 3 months
10) Measurement range : 20m (between the lowest water level and the highest water level)
11) Degree : within 3 months ± 15 minutes

⑤ Recorder Parts and Consumables Basic Specifications
1) Recording paper : 1 pc (inserted into the body)
2) Recording pen : 1 cm pen, 1 m pen (inserted into the body)
3) Ball wire : Ø1.5mm, length 25m, 1 pc, stainless steel
4) Clip : 2 (for fixing the ball wire)
5) Float : Diameter Ø20cm, 1ea (Stainless steel 1.5Kg)
6) Weight : Diameter Ø4.5cm, 1ea (stainless steel 1Kg)
7) Battery : Built-in 1.5V medium (R14) battery

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