1 Product Overview

DAQ-GP-TLL4G wireless liquid level sensor terminal is a wireless liquid level measurement product launched by Shanghai Data Acquisition IOT Technology Co., LTD. The principle is to use a Wheatstone bridge on the diffused silicon chip, the pressure of the measured medium (gas or liquid) changes the resistance value of the bridge wall (Piezoresistive effect), resulting in a differential voltage signal, which is converted into a standard analog signal or digital signal by a special amplifier, and then can be converted into the pressure corresponding to the liquid level to be measured. Because there is a certain coefficient ratio relationship between different liquid depth and liquid pressure, the water level of the liquid to be measured can be obtained by using this coefficient ratio relationship. The product has strong anti-interference, overload and shock resistance, small temperature drift, high stability, and high measurement accuracy, and is the ideal liquid level measurement instrument in the field of industrial automation.

By default, the sensor terminal supports 4G/WiFi/LoRa and other communication methods, and supports MQTT, HTTP and other communication methods, which can overcome the wireless communication block caused by the special environment on the site, greatly simplifying the field deployment time and reducing construction costs.

2 Service Concept

We solemnly promise that:

 What you buy is not only the product, but also the meticulous and thoughtful technical support services!!!( =^_^= )

 This product, the site only ordinary workers connected to electricity installation! No debugging!

 We provide free remote guidance, remote configuration and debugging service, and send the data to the user-specified cloud platform.

Free Internet of Things solution consulting services!

3 Product Features

3.1 Temperature Acquisition Characteristics

Collection type: liquid level

Range: 0~50 m, other ranges can be customized

Accuracy: ±0.5.

Collection frequency: 1 second to 24 hours. Remote configuration is supported

3.2 Electrical Character

Power Supply Mode: battery power supply or 12V~36V DC

3.3 Communication Characteristics

Wireless Transmission Mode: 4G / NB-IOT / LoRa / WiFi

Communication Protocol: MQTT / TCP / UDP / HTTP / SSL / ModBus RTU, and other protocols can be customized

Data Forwarding: any public network server

Number of Server Centers: up to simultaneous data reporting to 7 cloud servers.

Heartbeat Packet: support custom heartbeat packet, can be set to signal intensity.

Registration Package: support custom registration package, can be set to IMEI code.

Positioning: Support LBS base station positioning to facilitate the query of device location.

3.4 Structural Property

Material: PC plastic (enclosure)

Main Protection Level: IP65, dust, rain and snow environment can work

Main Body Size: 200mm 94mm 60mm

Main Body Installation Method：Wall hanging or screw fastening

Probe Installation Method：Input type

3.5 Work Environment

Ambient Temperature: -30°C~85°C

Humidity: 0~95% (non-condensing Dew free)

4 Product Core Advantages

v Simple installation, fast deployment, help the Internet of things project quickly landing.

v The probe is waterproof and dust-proof.

v Support custom registration package and heartbeat package, facilitate the platform to distinguish devices.

v Support any private Internet of Things cloud platform and configuration software, and provide data protocol docking.

v Support Ali cloud, Baidu Tiangong, OneNet, Tencent Cloud and other mainstream cloud platforms.

v Support remote configuration parameters and FOTA remote upgrade to minimize the personnel cost of site construction and maintenance.

5 Data Reporting Communication Protocol

5.1 Protocol Parsing Instructions

For UDP / TCP / MQTT / HTTP and other push methods, users should provide the public network IP (or domain name) address and port number of the cloud server to receive the data.

Example of JSON format:

{"depth":122,"ID":"860344048491162"}

Message analysis:

{

"depth": 122// Liquid level depth, unit cm

"ID": "860344048491162" // Device ID

}

5.2 Agreement Customization

If you need to customize other communication protocols, you can contact the business personnel to communicate them.

6 Platform Docking

6.1 Default Platform

The product is connected to our designated industrial Internet of Things platform by default, and the platform interface is as follows:

Computer-side browser interface

Mobile terminal WeChat access interface

6.2 The User Specifies the Platform

Take the connection of Ali Cloud platform as an example. After users create products and add devices on the Ali Cloud Internet of Things platform, users need to provide a triad: {ProductKey, DeviceName, DeviceSecret} and the MQTT theme to be released.

For example, the value of triples is:

ProductKey = b0FMK1Ga5cp

DeviceName = 862991419835241

DeviceSecret = y7MTCG6Gk33Ux26bbWSpANl4OaI0bg5Q

7 Matters Need Attention

The product is the default built-in Internet of Things SIM card, and the traffic fee is about 20 yuan per year, including free technical support fee and maintenance fee. If you need to use the user's own SIM card, please inform you in advance.

8 Contacn Us

Website: www.daq-iot.com

Tel: +8619936624847

Email: shengrunan@daq-iot.com

    WhatsApp：+8619936624847