LWGK Series IC Card Intelligent Flow Controller

Features

■ Integrate flow metering, CPU card operation, volume correction and control, with compact structure, high reliability, accurate calculation, fast control;

■The flow compensation controller uses external digital temperature and pressure sensor, with high precision, convenient maintenance and verification;

■ Mature metering base meter: uses the metering base meter produced by our company and evaluated by the market for many years, with stable and reliable performance and accurate measurement;

■Reliable control ball valve: zero pressure loss structure design, valve nominal diameter is equal to pipe diameter , and the switching valve operates reliably;

■Use the main and auxiliary battery power supply mode, with the micro-power circuit design, and the built-in battery can be used for more than three years, and the external power supply can be used for long-term power supply to guarantee valve can be reliably switched.

■LCD displays the cumulative total amount, instantaneous flow rate, temperature, pressure, residual gas volume, battery status, valve status, etc., clear and intuitive display, convenient reading;

■Use EEPROM data storage technology, with historical data storage and query function ;

■Use a CPU card and an embedding ESAM security module, and each operation step of the card requires security authentication with high security;

■ The card can store the card reading information of each meter, and the gas company can read all the information in the card through the user management system during the sale of the gas, which is convenient for managing the user;

■ Use pulse signal output and RS485 communication interface to be convenient for the upper computer to connect to the network, and it can also be matched with the data collector to realize wireless data acquisition;

Functional Features

1.It achieves pre-paid management through IC card, with one meter and one card, and with different user passwords, safe and reliable;

2. The liquid crystal Chinese character displays the air volume information and the related information and status of the valve, the underload, the fault, the low battery, etc.;

3. Use a large-capacity lithium battery for powerto extend the service life. The battery life under normal use is more than 3 years;

4. The controller has battery power detection function. When the battery power is low, the system will automatically display “low power”, with the sound alarm, and will automatically close the valve within the preset time;

5. The controller has a variety of protection functions. When the phenomenon of opening the box, disconnecting the wire, powering off, magnetic interference, etc occurs., the controller will automatically close the valve, cut off the air source, and the liquid crystal will display “fault” and “close the valve”. ” prompt information;

6. Press the key to view work information such as the remaining air volume, accumulated air volume and status;

7. The controller has the external power detection function. When the flow base meter battery or the external power supply is low, the controller will automatically close the valve and display the corresponding fault information;

8.The controller has a flow signal monitoring function. If the controller does not receive the signal output by the flowmeter within the set time, the controller will close the valve and display the corresponding fault information;

9. Press the key to view work information such as the remaining air volume, accumulated air volume and status;

10. The flowmeter can be equipped with RS485 communication interface to verify the accumulated data in real time;

11. Use large LCD screen to display gas volume and status information, clear and intuitive;

12. The controller meter head can rotate by 180 degrees, which is easy to install and use.

Main Technical Parameters

(1) Main circuit board working voltage: DC 6V

(2) Control valve working voltage: DC 7.2V

(3) The lowest alarm voltage of the external battery: 4.5V

(4) The lowest alarm voltage of the internal battery: 5V

(5) Maximum working current: ≤200mA

(6) Static working current: <15µA

(7) Working temperature:-20℃~+55℃, relative humidity: ≤93%RH

(8) Maximum working pressure: ≤0.4M Pa

(9) Adaptation meter type: various flowmeters, industrial membrane meter

Product Composition

This product consists of four parts: industrial gas base meter/flowmeter, intelligent controller, user IC card and prepaid management system.

Installation Dimension Diagram

                                                                                                                                                            Table 1

Comparison Table of Product Model and Adaptation Meter Type Flow                                                                                          

                                                                                                                                                           Table 2

Attention

1. After the IC card is removed, the card mouth must be covered to prevent dirt from entering.

2. This product implements one household, one meter and one card. IC cards must be kept in a safe place and must not be damaged or borrowed from each other.

3. When replacing the external battery, it must be confirmed that there is no flammable gas on site; if you need to replace the internal battery, please contact the local gas company.

4. In order to ensure the normal use of IC card gas products, please select the No. 5 alkaline battery, and it is strictly forbidden to use AC power instead of battery.

5. Do not bring magnetic substances close to the IC card gas products to avoid being unusable.

6. When connecting with the flowmeter, the direction indicated by the arrow of the controller should be installed correspondingly to the direction indicated by the flowmeter arrow, and it should not be reversed to avoid inconvenience.