Submersible wireless liquid level sensor manual.

 

1 Product Overview



DAQ-GP-TLL4G wireless liquid level sensor terminal is a wireless liquid level measurement product launched by Shanghai Shucai IoT Technology Co., Ltd. The principle is to use a Wheatstone bridge on a diffused silicon wafer . The measured medium (gas or liquid) applies pressure to change the resistance value of the bridge wall (piezoresistive effect), generating a differential voltage signal. This signal is converted into a standard analog signal or digital signal corresponding to the range by a dedicated amplifier , which can then be converted into the pressure corresponding to the liquid level of the measured liquid. Since there is a certain coefficient proportional relationship between different liquid level depths and liquid pressure , the water level of the measured liquid can be obtained by using this coefficient proportional relationship. This product has strong anti-interference, overload and shock resistance, small temperature drift, high stability, and high measurement accuracy. It is an ideal liquid level measurement instrument in the field of industrial automation .

The sensor terminal supports 4G/WiFi/LoRa and other communication methods by default , as well as MQTT, HTTP and other communication methods. It can overcome the wireless communication obstruction caused by the special on-site environment, greatly simplifying on-site deployment time and reducing construction costs .

model

Features

DAQ-GP - TLL4G

4G communication , 12~36V DC power supply

DAQ-GP - TLLWiFi

DAQ-GP - TLLLoRa

SDAQ-GP - TLLNB

WiFi transmission method

LoRa transmission method

NB transmission method (customized, battery powered)

2 Service Concept

Our company solemnly promises:

You buy not only the product, but also the meticulous and thoughtful technical support service ! ! ! ( =^_^= )

This product only needs ordinary workers to connect the power and install it on site! No debugging is required!

We provide free remote guidance, remote configuration and debugging services, and send data to the user's designated cloud platform.

Free IoT 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 ~ 24 hours, support remote configuration

3.2 Electrical Characteristics

Power supply: battery or 12 ~ 36 V DC

3.3 Communication characteristics

Wireless transmission method: 4G /NB-IOT/LoRa/WiFi

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

Data forwarding: any public network server

Number of server centers: Supports reporting data to up to 7 cloud servers at the same time.

Heartbeat packet: supports custom heartbeat packets, which can be set to signal strength.

Registration package: supports custom registration package, which can be set to IMEI code.

Positioning: Support LBS base station positioning, convenient for querying device location.

3.4 Structural characteristics

Material: PC plastic (shell)

Main protection level: IP65 ,

Main body size: 200mm×94mm×60mm

Main installation method: wall hanging or screw fastening

Probe installation method: immersion type

3.5 Work Environment

Ambient temperature - 20 °C ~ 85 °C, humidity 0 ~ 95% ( no condensation , no condensation )

4 Core advantages of products

v Simple installation and quick deployment help IoT projects to be implemented quickly

v The probe is waterproof, dustproof and anti-clogging

v Supports custom registration packages and heartbeat packages to facilitate platform differentiation of devices

v Support any private IoT cloud platform and configuration software, and provide data protocol docking

v Supports mainstream cloud platforms such as Alibaba Cloud, Baidu Tiangong, OneNet, and Tencent Cloud

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

5 Data reporting communication protocol

5.1 Protocol analysis instructions

There are multiple push methods such as UDP/TCP/MQTT/HTTP. To receive data, users need to provide the public IP (or domain name) address and port number of the cloud server.

Example of a data message in JSON format :

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

Message analysis:

{

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

"ID" : "860344048491162" //Device ID

}

5.2 Protocol customization

If you need to customize other communication protocols, please contact our sales staff.

6 Platform docking

6.1 Default Platform

The product is connected to our designated industrial Internet of Things platform by default when it leaves the factory. The platform interface is as follows:


 

Computer browser interface example


 

WeChat access interface example on mobile phone

6.2 User-specified platform

Taking the Alibaba Cloud platform docking as an example, after the user creates a product and adds a device on the Alibaba Cloud IoT platform, the user needs to provide a triple: {ProductKey, DeviceName, DeviceSecret} and the MQTT topic to be published.

For example, the values of the triples are:

ProductKey = b0FMK1Ga5cp

DeviceName = 862991419835241

DeviceSecret = y7MTCG6Gk33Ux26bbWSpANl4OaI0bg5Q

 

7 Precautions

This product comes with a built-in IoT SIM card by default. The data traffic fee is about RMB 20 per year, including free technical support and maintenance fees. If you need to use your own SIM card, please inform us in advance.

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