GPRS Ultrasonic Liquid Level Sensor High Accuracy Explosion Proof Design

GPRS ultrasonic liquid level sensor

Introduction

GXPS606A wireless liquid level meter is a liquid level measurement and transmission integrated table using GPRS wireless communication.Integrated high-sensitivity liquid level, high-precision signal conditioning circuit, low-power battery power management, and rich LCD display interface. Naturally strong anti-interference characteristics, it is an ideal intelligent instrument for liquid level collection and transmission. Suitable for oilfield, water conservancy, metallurgy, tap water and other industries.

main feature:

● Using the latest microprocessor technology, battery-powered, ultra-low power operation, battery life of 1-5 years.

● The temperature characteristics of the whole machine are very good, and the working temperature range is -30-70 degrees

● Wireless GPRS network communication network operation, combined with self-built or public platform, can achieve unlimited number of                  products connected.

● Explosion-proof design: explosion-proof aluminum shell, the circuit board system is intrinsically safe;

● Protection grade: IP67, fully sealed and waterproof design;

● The installation direction is adjustable: the live pipeline valve can be connected through the joint or adapter to adjust the direction;

● High gain antenna, multiple check mechanism to ensure always online.

● Customized cable sleeve to prevent cable joint breakage;

● Rich LCD display interface, display resolution can be adjusted, with power prompt, dynamic percentage display.

● Perfect user calibration support, through the panel buttons, users can recalibrate the transmitter data without any auxiliary equipment, multiple    data protection, even if the settings are wrong, the factory state can be restored.

● User site button calibration function. Support users to calibrate the transmitter twice. Strong anti-interference characteristics.

Parameters

• Measured medium: liquid, gas
• Range: 0~50m Customizable
• Accuracy: 0.5
• Overload pressure: 150% F.S
• Reporting period: 1 minute to 24 hours
• Decimal places: 0~3 digits can be set
• Signal transmission: GPRS network communication
• Transmitting power: ≤40mW
• Working current: ≤150mA
• Standby current: ≤17uA
• Working power: 3.6V lithium battery
• Explosion-proof grade: Exib IIB T4 Gb
• Shell protection:  IP67
• Process Interface:  Customized
• Working environment temperature:  -40~70°C
• Working environment humidity:  ≤97% RH
• Product weight:  2000g

Dimension

                                                                                 Fig 3‑1

Display operation instructions

Panel functional description:

Function Description:

• I/0: Communication interface. It is a serial port TTL level, not USB.
• ZERO: Button. Confirm function.
• S1: Button. Turn page, shift and other functions.
• S2: Button. Reset, add 1 and other function

LCD window

                                                              Fig 4‑2 Schematic of the LCD window

Button function description

Transmitter reset restart

Press and hold the “S2” button for 3 seconds, the transmitter performs a reset restart and searches the network.

Level master variable clear, and full scale calibration operation

Under normal working conditions, press “ZERO” to enter the password input interface, enter the password 0001 to perform main variable clearing, zero calibration, and full scale calibration. Under the three functions, there are three options NO, YES. , RST. "YES" is the confirmation, "NO" is the abandonment, and "RST" is the reset. Press "S1" and "S2" to select different operations. The details are as follows:

Power on/ off setting

Under normal working conditions, press “ZERO” to enter the password input interface, enter the password 002 to put the system into the shutdown state, the screen is not displayed. Long press the S2 button to enter the boot.

Positioning module section description

The data is uploaded once every 24 hours. The data includes pressure values, latitude and longitude, and positioning methods. The module sends the data immediately after the positioning is successful within five minutes. If the positioning fails, the data is sent immediately after five minutes. After the data is sent, the module is powered off and powered off. When there is an abnormal state (network, transmission failure), the module will automatically shut down and power off after five to six minutes, waiting for the next data transmission.

Installation

1. Determine the measurement range required by the process and the range of the transmitter to be installed.

2. The joint thread size of the process installation must be matched with the transmitter

Common fault treatment

When the meter is not working properly, the user can refer to the following table for simple maintenance. If the fault cannot be eliminated, please contact the manufacturer.

After sales service

This product is warranted for one year under the conditions that the user fully complies with the requirements of the instructions, the method of use is correct, and no one is damaged.