The Smart LPG2412-BT is a high-precision ultrasonic propane tank level detector independently developed by Shenzhen EPT Technology Co., Ltd. Designed for residential, commercial, and industrial LPG storage applications, it enables users to monitor their propane tank's liquid level in real time through a Bluetooth connection and the TankIOT mobile app - without any complicated wiring or professional installation.
Leveraging advanced ultrasonic echo-ranging technology, the Smart LPG2412-BT measures the distance between its sensor and the liquid surface inside the tank. This non-contact approach eliminates the risk of medium corrosion, contamination, or mechanical wear, ensuring long-term stable and reliable level monitoring. The compact, integrated design fits most standard propane tank configurations, making it an ideal retrofit solution for existing setups or a smart addition to new installations.
Product Features
Bluetooth Low Energy (BLE) Wireless Connection
The Smart LPG2412-BT pairs directly with your smartphone via BLE, enabling seamless real-time data transmission without the need for Wi-Fi or a gateway hub. Simply enable Bluetooth, scan the QR code to install the TankIOT app, and start monitoring your propane tank level within minutes.
Using ultrasonic pulse-echo technology, the sensor measures the liquid level from outside the tank, completely avoiding direct contact with the stored medium. This design ensures accurate readings unaffected by liquid density, color, or turbulence, and eliminates any risk of contamination or sensor damage.
Smart App-Based Monitoring & Alarm
The dedicated TankIOT app displays real-time liquid level depth, percentage fill, and calculated tank volume. Users can set custom upper and lower alarm thresholds and receive push notifications when levels cross boundaries, helping prevent both hazardous overfills and unexpected run-outs.
Flexible Tank & Container Shape Support
The Smart LPG2412-BT supports multiple container shapes including vertical cylindrical tanks, horizontal tanks, and more. The app automatically adjusts the volume calculation based on the selected tank geometry (cylinder, rectangular, etc.) and user-provided dimensions, delivering precise volume readings for various tank configurations.
Working Principle
The Smart LPG2412-BT operates on the principle of ultrasonic pulse-echo ranging:
Step 1: The sensor probe emits high-frequency ultrasonic pulses downward toward the liquid surface inside the tank.
Step 2: The ultrasonic waves propagate through the air inside the tank and reflect off the surface of the liquid.
Step 3: The sensor's built-in processor records the time difference between pulse emission and echo reception with high precision.
Step 4: Using the speed of sound in air (compensated for ambient temperature), the device calculates the distance from the sensor to the liquid surface.
Step 5: Based on the tank's known geometry and user-entered dimensions, the app converts the distance reading into liquid volume percentage and displays it on your smartphone in real time.
All data is transmitted locally to your phone via Bluetooth Low Energy - no cloud server or internet connection is required for core monitoring functions.
Product Parameters
|
Parameter |
Specification |
|
Product Model |
Smart LPG2412-BT |
|
Detection Method |
Ultrasonic Non-Contact Ranging |
|
Communication |
Bluetooth Low Energy (BLE) |
|
Mobile App |
TankIOT (iOS / Android) |
|
Battery Type |
CR2032 Button Cell |
|
Battery Voltage |
3V |
|
Battery Capacity |
220 mAh |
|
Service Life |
Up to 1 Year |
|
Operating Temperature |
-10°C to +55°C |
|
Alarm Settings |
Customizable Upper & Lower Limit Thresholds via App |
Application Fields
The Smart LPG2412-BT is widely used across a broad range of propane and liquefied gas storage monitoring scenarios:
Residential LPG cylinder monitoring - track your home BBQ, camper, or backup generator propane supply with real-time level alerts.
Commercial and industrial gas storage tanks - monitor large LPG bulk tanks at factories, warehouses, and distribution facilities.
Agricultural operations - monitor propane used for grain drying, heating, and farm equipment refueling.
Marine and recreational vehicles (RVs) - track propane levels in boat galleys and RV appliances.
Hospitality and food service - monitor LPG supply for commercial kitchens, hotels, and restaurants.
Water and oil tank level detection - the same ultrasonic technology supports water and oil media with appropriate app configuration.
Installation Method
Tools Required: None - no drilling, wiring, or professional tools required.
The Smart LPG2412-BT uses external mounting and does not require any modification to the tank structure. Follow the steps below for correct installation:
Step 1 - Prepare the Sensor
Remove the protective coupling agent pre-applied to the black silicone probe surface of the sensor (as packaged from the factory).
Step 2 - Apply Coupling Agent
Apply a small amount of the included coupling agent (or a suitable ultrasound gel/compound) to the black silicone probe surface of the sensor. This ensures optimal ultrasonic wave transmission through the tank wall.
Step 3 - Mount the Sensor
Place the sensor firmly against the outer surface of the tank, ensuring the protruding probe section is in complete contact with the tank wall. The sensor should be positioned on the top flat section of the tank, directly above the maximum expected liquid level.
Step 4 - Pair via Bluetooth
Open the TankIOT app, enable Bluetooth on your mobile device, and follow the in-app guide to add the device. The app uses a gyroscope-based visual aid to help confirm correct installation orientation.
Step 5 - Configure Settings
In the app, enter the tank type (vertical cylinder / horizontal / other), container dimensions, installation height, and desired alarm thresholds. Select your preferred length unit (meters, centimeters, inches, or feet). Tap Submit to activate monitoring.
Tip: If the sensor fails to detect a reading, first check that sufficient coupling agent has been applied, then exit and re-pair the Bluetooth connection.
Customizable Options
We understand that every business has unique needs. We offer flexible customization services:
Private Labeling: We can print your logo on the sensor housing and packaging.
Frequency Adjustment: Tuning the ultrasonic frequency for specific liquid types (e.g., foam-heavy liquids).
Packaging: Custom retail boxes or bulk industrial packaging.
MOQ: Flexible Minimum Order Quantities for trial orders
Why Choose Us
Reliable Product Quality: Focus on level sensor manufacturing for years, with mature production technology and strict quality inspection process. The US-3W201 sensor features stable operation, strong anti-interference ability and long service life, reducing customer equipment replacement and maintenance costs.
Intelligent & Practical Product Design: Integrate industrial standard 4-20mA output and Tuya APP intelligent remote monitoring, combining traditional industrial compatibility with modern intelligent management, which is more in line with the intelligent upgrading demand of modern industrial production.
Flexible Customization Service: Break the limitation of standardized products, provide targeted customized services for different industrial working conditions, and solve the problem that universal sensors are not applicable to special scenarios.
Professional After-sales Support: Provide 24-hour technical consultation, installation guidance and after-sales maintenance services, quickly respond to customer problems, ensure normal and stable operation of customer equipment, and create long-term stable cooperative value for customers.
FAQ
Q1: How does the Smart LPG2412-BT connect to my phone?
A: The device connects via Bluetooth Low Energy (BLE). Simply enable Bluetooth on your phone, download the free TankIOT app from the QR code in the manual, and follow the in-app pairing instructions. No Wi-Fi, gateway, or internet connection is required for basic monitoring.
Q2: Do I need to modify my propane tank to install this sensor?
A: No. The Smart LPG2412-BT is an external, non-contact device. It mounts directly on the outer surface of the tank using the included coupling agent - no drilling, cutting, or tank modification is required.
Q3: What tank types and media does the sensor support?
A: The sensor supports vertical cylindrical tanks, horizontal tanks, and other common container shapes. It works with LPG/propane, water, and oil media. Select the appropriate medium and container type in the TankIOT app to receive accurate volume calculations.
Q4: How long does the battery last, and how do I replace it?
A: The device is powered by a standard CR2032 coin cell (3V, 220 mAh) with a service life of up to 1 year under normal operating conditions. Battery replacement is straightforward - simply open the sensor housing and swap the battery. The app will also notify you when the battery level is low.
Q5: Can I set custom alarm thresholds for high and low liquid levels?
A: Yes. The TankIOT app allows you to set custom upper and lower limit alarm percentages. When the tank level crosses your set thresholds, the app sends push notifications to your phone. You can also configure email alerts for high/low level events from the device management page.
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