DIGITEN G1 Water Flow Sensor (Model FL-808) Instruction Manual

導入

This manual provides detailed instructions for the installation, operation, and maintenance of the DIGITEN G1 Water Flow Sensor, Model FL-808. This Hall effect flow sensor is designed for accurate measurement of liquid flow within a range of 1 to 60 liters per minute. Please read this manual thoroughly before use to ensure proper function and safety.

製品終了view

The DIGITEN G1 Water Flow Sensor (Model FL-808) is a robust and reliable device for measuring water flow. It features G1 (0.5 inch) threaded connections for easy integration into various systems. The sensor outputs a square wave pulse signal proportional to the flow rate, making it suitable for microcontrollers and other electronic systems.

主な特徴:

耐久性のある構造: Waterproof, heat-resistant, pressure-resistant, and cold-resistant design.
広い流量範囲: Measures flow from 1 to 60 Liters per minute.
簡単なインストール: Simple G1 (0.5 inch) threaded connections.
パルス出力: Generates a square wave pulse signal for flow rate calculation.
RoHS準拠: 環境基準を満たしています。

安全情報

設置またはメンテナンスの前に、電源が切断されていることを確認してください。
Do not exceed the maximum operating pressure of 1.75 MPa.
Verify correct wiring connections to prevent damage to the sensor or connected equipment.
Avoid installing the sensor in locations with extreme vibrations or corrosive environments.
This device is intended for water flow measurement. Do not use with other liquids without verifying compatibility.

パッケージ内容

1 x DIGITEN G1 Water Flow Sensor (Model FL-808)

技術仕様

モデル	FL-808
材料	金属（内部部品）、プラスチック（ハウジング）
入口/出口接続サイズ	G1 (0.5 inch) Threaded
流量範囲	1 - 60 L/min
最高使用圧力	1.75MPa(17.5バール)
営業巻tage範囲	DC 5 - 24 V
動作電流	Cannot exceed 10 mA (at DC 5V)
出力信号	Square Wave Pulse
頻度の公式	F = 4.8 * Q (L/min) ± 2%
Output Pulse per Liter	Approximately 450 pulses/liter
動作温度	≤ 80°C
動作湿度	35% - 90% RH
保管温度	-25°C ～ +80°C
保管湿度	25% - 95% RH
絶縁抵抗	>100MΩ
ケーブル長さ	15センチ
製品重量	80グラム

セットアップとインストール

1. 機械的設置

The flow sensor features G1 (0.5 inch) male threaded connections on both ends. Ensure the flow direction arrow on the sensor body aligns with the intended water flow in your system. Apply appropriate thread sealant (e.g., PTFE tape) to prevent leaks. Tighten connections securely but do not overtighten.

DIGITEN G1 Water Flow Sensor, front view

図1: 前面 view of the DIGITEN G1 Water Flow Sensor, showing the G1 threaded connections and the product label.

Technical drawing of DIGITEN G1 Water Flow Sensor with dimensions

Figure 2: Technical drawing illustrating the dimensions and internal structure of the DIGITEN G1 Water Flow Sensor.

2. 電気配線

The sensor has a 3-wire connection. Connect the wires as follows:

赤いワイヤー: VCC (+) - Connect to DC 5V to 24V power supply.
黒ワイヤー: GND (-) - Connect to ground.
黄色のワイヤー： Signal Output - Connect to your microcontroller or data acquisition system's input pin.

稼働量を確認するtage is within the specified range of DC 5-24V. The current drawn by the sensor should not exceed 10mA at 5V DC.

DIGITEN G1 Water Flow Sensor with red, black, and yellow wires connected

図 3: 拡大図 view of the sensor's wiring connections: Red (VCC), Black (GND), and Yellow (Signal).

Close-up of the 3-pin connector for the DIGITEN G1 Water Flow Sensor

図4：詳細 view of the 3-pin connector attached to the sensor's cable.

操作手順

動作原理

The DIGITEN G1 Water Flow Sensor uses a Hall effect sensor to detect the rotation of an internal turbine. As water flows through the sensor, it spins a turbine, and a magnet attached to the turbine generates a series of electrical pulses. The frequency of these pulses is directly proportional to the flow rate of the water.

Flow Rate Calculation

The output signal is a square wave. The flow rate (Q in L/min) can be calculated from the measured frequency (F in Hz) using the following formula:

F = 4.8 * Q (L/分)

Therefore, to find the flow rate:

Q (L/min) = F / 4.8

The sensor provides approximately 450 pulses per liter of water. The accuracy is ±2%.

DIGITEN G1 Water Flow Sensor showing internal turbine

図5：内部 view of the sensor, highlighting the turbine mechanism responsible for pulse generation.

DIGITEN G1 Water Flow Sensor with clear label and connections

Figure 6: The sensor with its label clearly visible, detailing model number, working range, and wiring information.

メンテナンス

定期点検: Periodically check for any signs of leaks at the connections or damage to the sensor body and wiring.
クリーニング： If the sensor's accuracy degrades, it may be due to debris accumulation inside the turbine. Disconnect power and water supply, then carefully remove the sensor for inspection and cleaning. Use a soft brush and clean water to remove any obstructions.
ストレージ： If storing the sensor for an extended period, ensure it is clean, dry, and kept within the specified storage temperature and humidity ranges (-25°C to +80°C, 25%-95% RH).

トラブルシューティング

問題	考えられる原因	解決
信号出力なし	Incorrect wiring (VCC, GND, Signal) 電源なしセンサーの誤動作水の流れがない	Check wiring against the diagram. Verify power supply (DC 5-24V) is connected and active. Ensure water is flowing through the sensor. Test with a known good sensor if possible.
Inaccurate flow readings	Debris inside the sensor Air bubbles in the water line Incorrect frequency calculation formula Sensor installed incorrectly (e.g., against flow direction)	「メンテナンス」セクションの説明に従ってセンサーをクリーニングします。 Bleed air from the water system. Double-check the calculation formula (F = 4.8 * Q). Verify the flow direction arrow on the sensor.
接続部の漏れ	ねじシーラント不足緩い接続損傷したねじ山	Reapply thread sealant (PTFE tape) and retighten. Ensure connections are snug. ねじ山に損傷がないか検査し、必要に応じて交換します。

保証とサポート

For warranty information or technical support, please contact DIGITEN customer service through the retailer where the product was purchased or visit the official DIGITEN website. Please have your product model number (FL-808) and purchase details ready when contacting support.

DIGITEN FL-808