0-5m Submersible Water Level Sensor 4-20mA 12-32VDC 5m Cable IP68 Transmitter - Image 1
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0-5m Submersible Water Level Sensor 4-20mA 12-32VDC 5m Cable IP68 Transmitter

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Description

🌊 0–5m Submersible Water Level Transmitter 4-20mA 12–32VDC IP68 | AuscomTech

The YB-2J-F Submersible Liquid Level Transmitter is a high-precision water level sensor designed for continuous depth measurement in tanks, wells, reservoirs, and bore systems.

Built with a 304 stainless steel housing and IP68 waterproof protection, this transmitter uses a diffused silicon pressure sensor with full digital signal conditioning to provide a stable and accurate 4–20mA analog output.

Designed specifically for water measurement, this sensor is ideal for industrial monitoring, automation systems, PLC integration, and remote level tracking applications.

⭐ Key Features

💧 0–5 Metre Measurement Range
Designed for accurate water depth measurement up to 5 metres.

📡 Industry Standard 4–20mA Output
Stable analog current signal compatible with PLCs, data loggers, SCADA, and control systems.

⚡ Wide Supply Voltage
Operates from 12–32VDC (surface marking may show 24V, but supports full 12–32V range).

🛡️ IP68 Waterproof Rating
Fully submersible design with multi-layer sealing for long-term water immersion.

🔧 Diffused Silicon Sensing Element
High-precision internal sensor for improved measurement stability.

🧱 304 Stainless Steel Housing
Corrosion-resistant construction for water applications.

🔄 45° Anti-Impact Probe Design
Angled probe reduces blockage risk and improves durability.

📊 Technical Specifications

  • Model: YB-2J-F

  • Measurement Range: 0–5 metres

  • Output Signal: 4–20mA (analog current loop)

  • Supply Voltage: 12–32VDC

  • Measurement Accuracy: ±0.5% FS

  • Long-Term Stability: ±0.2% FS / year

  • Temperature Drift: ±0.01% FS / °C

  • Medium Temperature: -40°C to +80°C

  • Ambient Temperature: -40°C to +80°C

  • Temperature Compensation Range: -10°C to +70°C

  • Overload Protection: Built-in

  • Impact Resistance: 20g (20–5000Hz)

  • Protection Rating: IP68

  • Cable Length: 5 metres (vented air guide cable)

  • Material: 304 Stainless Steel

  • Measured Medium: Clean water only

⚠️ Important Notes

• Designed for water only
• Do NOT use with corrosive liquids or chemicals
• Not recommended for liquids that attack stainless steel
• Requires appropriate 4–20mA input device for signal reading
• Must be powered within specified 12–32VDC range

🧩 Compatible With

• PLC analog input modules (4–20mA)
• Industrial controllers
• SCADA systems
• Data acquisition systems
• Arduino / ESP32 (with 4–20mA interface module)
• Water tank monitoring systems

⚙️ Typical Applications

• Bore water level monitoring
• Water tank depth measurement
• Reservoir level control
• Irrigation systems
• Pump automation systems
• Industrial water management
• Remote telemetry installations

📦 Package Includes

• 1 × YB-2J-F 0–5m Submersible Water Level Transmitter 5m vented cable

📌 Code Examples & Usage – 24VDC Submersible Water Level Transmitter (0–5m, 4–20mA)

📋 Overview

This 24VDC submersible water level transmitter is an industrial-grade hydrostatic pressure sensor designed for accurate, long-term water level measurement in tanks, wells, sumps, boreholes, and wet wells.

The sensor outputs a 2-wire 4–20mA current loop, making it ideal for:

  • PLC & SCADA systems

  • Industrial control panels

  • Pump stations & VFD monitoring

  • Data logging & telemetry

  • Arduino / ESP32 prototyping (with a shunt resistor)

Measurement range: 0–5 mH₂O (0–50 kPa)
Cable length: 6 m
Protection: IP68, stainless steel 316L housing

⚙ Key Technical Summary

  • Power supply: 24 VDC

  • Output signal: 4–20 mA (2-wire loop-powered)

  • Measurement range: 0–5 m water column

  • Accuracy: ±0.5% FS

  • Overload capacity: 2× full scale

  • Operating temperature: –20 °C to +120 °C

  • Compensation temperature: –10 °C to +80 °C

  • Protection rating: IP68

  • Material: 316L stainless steel

  • Explosion protection: Exia II CT6

⚠ IMPORTANT – Output Type (READ FIRST)

🚨 This is a 2-wire 4–20 mA sensor

  • The sensor is loop-powered

  • The same two wires provide power AND signal

  • It does NOT output voltage directly

✔ 4–20 mA is preferred in industrial systems due to:

  • High noise immunity

  • Long cable run capability

  • Fault detection (0 mA = broken loop)

🔌 Typical PLC / SCADA Wiring (Recommended Use)

Most PLCs support direct 4–20 mA analog inputs.

Standard 2-Wire Loop Wiring

+24VDC ───► Sensor (+)
Sensor (–) ───► PLC AI+
PLC AI– ───► 0VDC

📌 Always follow your PLC manufacturer’s analog input wiring guide.

🔌 Load Resistance Requirement

The sensor specifies:

Load resistance < (U − 10) / 0.02 Ω

At 24 VDC supply:

(24 − 10) / 0.02 = 700 Ω (max loop resistance)

✔ Most PLC analog inputs are well within this limit.

🧪 Reading the Sensor with Arduino / ESP32 (Using a Shunt Resistor)

Microcontrollers cannot measure current directly.
A precision resistor converts the 4–20 mA signal into a voltage.

🔧 Recommended Shunt Resistor Values

Platform Shunt Resistor Voltage Range
Arduino (5V ADC) 250 Ω 1.0–5.0 V
ESP32 (3.3V ADC) 165 Ω 0.66–3.3 V

📌 Use a 0.1% or 1% metal film resistor for best accuracy.

🔌 Arduino Uno Wiring (4–20 mA)

24V+ ───► Sensor +
Sensor – ───► 250Ω ───► GND
└──► A0

🧪 Arduino Example – Convert 4–20 mA to Water Level (0–5m)

const int adcPin = A0;
const float shuntResistor = 250.0; // ohms
const float rangeMeters = 5.0;void setup() {
Serial.begin(9600);
}void loop() {
int raw = analogRead(adcPin); // 0–1023
float voltage = (raw / 1023.0) * 5.0; // volts

float current_mA = (voltage / shuntResistor) * 1000.0;

// Clamp to valid range
if (current_mA < 4.0) current_mA = 4.0;
if (current_mA > 20.0) current_mA = 20.0;

float level_m = (current_mA – 4.0) * (rangeMeters / 16.0);

Serial.print(“Current: “);
Serial.print(current_mA, 2);
Serial.print(” mA | Level: “);
Serial.print(level_m, 2);
Serial.println(” m”);

delay(500);
}

🧪 ESP32 Example (Recommended for IoT / Logging)

const int adcPin = 34;
const float shuntResistor = 165.0;
const float rangeMeters = 5.0;void setup() {
Serial.begin(115200);
}void loop() {
int raw = analogRead(adcPin); // 0–4095
float voltage = (raw / 4095.0) * 3.3;

float current_mA = (voltage / shuntResistor) * 1000.0;

if (current_mA < 4.0) current_mA = 4.0;
if (current_mA > 20.0) current_mA = 20.0;

float level_m = (current_mA – 4.0) * (rangeMeters / 16.0);

Serial.printf(“I=%.2fmA Level=%.2fm\n”, current_mA, level_m);
delay(500);
}

📐 4–20 mA Scaling Reference (0–5 m)

Current Water Level
4.0 mA 0.00 m
8.0 mA 1.25 m
12.0 mA 2.50 m
16.0 mA 3.75 m
20.0 mA 5.00 m

🧠 Installation & Industrial Notes

  • Sensor measures hydrostatic pressure — assumes water density

  • Mount vertically for best accuracy

  • Secure cable with strain relief (do not suspend by cable alone)

  • Keep diaphragm clean and free of sludge

  • Ensure proper grounding for EMC performance

⚠ Safety & Handling Notes

✔ Do not disassemble the sensor
✔ Do not touch or damage the diaphragm
✔ Do not connect/disconnect wiring while powered
✔ Ensure compatibility of medium with 316L stainless steel

🧠 Common Issues & Fixes

Issue Likely Cause Fix
Always reads 0 No loop power Verify 24 V supply
Fixed reading Wrong wiring Confirm 2-wire loop
Noisy reading Long cable / EMI Use shielded cable
PLC shows 0–10 V Input mode wrong Set AI to 4–20 mA

✅ Easier Arduino Option – Use a 4–20mA → Voltage Signal Converter (Recommended)

Instead of using a shunt resistor to convert 4–20mA into a voltage, you can use a dedicated 4–20mA to voltage converter module (signal conditioner).

This approach is ideal if you want:

  • Simple wiring (no resistor selection)

  • A stable analog voltage output (e.g. 0–5V) for Arduino ADC

  • Better noise immunity and easier troubleshooting

  • Quick prototyping and data logging

🔌 Typical Wiring (Using a Converter Module)

Sensor loop (24VDC):

  • +24V → Level Transmitter (+)

  • Level Transmitter (–) → Converter IN+ (4–20mA input)

  • Converter IN– → 0V

Arduino analog output:

  • Converter VOUT (0–5V) → Arduino A0

  • Converter GND → Arduino GND

📌 Important: Ensure grounds are referenced correctly between the converter output and the Arduino.

🧪 Arduino Example – Read 0–5V From Converter and Convert to Level (0–5m)

This example assumes your converter outputs 0–5V scaled to 0–5m (common configuration):

const int adcPin = A0;
const float rangeMeters = 5.0;void setup() {
Serial.begin(9600);
}

void loop() {
int raw = analogRead(adcPin); // 0–1023
float voltage = (raw / 1023.0) * 5.0; // 0–5V

// If 0–5V = 0–5m, level is a straight scale:
float level_m = (voltage / 5.0) * rangeMeters;

Serial.print(“Vout: “);
Serial.print(voltage, 3);
Serial.print(” V | Level: “);
Serial.print(level_m, 2);
Serial.println(” m”);

delay(500);
}

If your converter is set to 1–5V (instead of 0–5V)

Some converters map 4–20mA → 1–5V. Use this mapping instead:

float level_m = ((voltage - 1.0) / 4.0) * rangeMeters;
if (level_m < 0) level_m = 0;
if (level_m > rangeMeters) level_m = rangeMeters;

Additional information

Weight 700 g
Dimensions 200 × 300 × 100 mm

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