How ultrasonic flowmeter works with bulk SD cards

An optional built-in mass data memory for the TDS series of ultrasonic flow meters, these Bulk SD cards, which are developed by the Memory Range Technology Co. Ltd. And then it can automatically record the text-format data output by the flow meters on their internal serial bus.

Content

  1. The principle of operation
  2. The run core
  3. The flow meter settings

The principle of operation

Without opening the flow meter enclosure or removing the memory card, on the contrary, a user can still use the USB connector to copy the data file directly to the computer for further processing.
The MCU on this storage will automatically create a folder named LCEMB on the blank SD. Furthermore, the received data will be completely saved to the 0001.TXT file under the folder. A new TXT file, such as 0002.TXT, 0003.TXT, or 0004.TXT, computer will create them every time. Also, it is turning on or every 24 hours if the 0001.TXT file already exists on the bulk SD cards. Therefore, original files will not be overwritten. Instead, the newly generated file will be immediately updating with the data to be stored. Obviously consumers don’t need to be concerned that the TXT file’s size will prevent them from opening it.

The run core

Generally speaking the memory is speedier and more stable since it uses an industrial-grade 32-bit ARM series high-performance embedded processor. In addition, it can support a high-speed TF card with a capacity as large as 32G and completely support the user’s long-term use.
What’s more, the file system uses a special dynamic memory allocation algorithm to control memory consumption and release in order to improve data transmission efficiency, prevent data loss, support data storage rates of up to 14K bytes/second, and guarantee that no byte is lost over the course of prolonged operation.
The built-in memory card has a self-locking card holder as well as shockproof. On the other hand, data loss caused by unintentional poor contact between the memory card and the card holder can avoid it. And when there is no memory card or the memory card has poor contact, a buzzer will immediately sound a warning. When the memory card cannot be detected or is full, the warning will also sound eventually.
At first the memory controls a U disk and enables data copying from a USB. Secondly there is no need to install drivers because it includes a high-speed USB 2.0 interface with automated USB recognition. For instance, the power supply needs to be off before using a USB to copy data files. The memory cannot be powered simultaneously by the flow meter power source and the USB power supply.
In a word, the flow meter power supply is used by the card when it functions, negating the need for an external power source.
In order to prevent the data from being printed out simultaneously when a thermal printer is connecting to the bus, a switch to manage the printer’s power must be included.

S1 Pin definition 
Pin Name Specification
1 VCC 3.6V
2 GND GND
3 NC NC
4 Data(RX) Data input

S2 USB Pin definition

Pin Name Specification
1 GND GND
2 VCC 5V power source
3 D+ Negative data
4 D- Positive data

Indicator light

State Display
Working normally Buzzer does not alarm
Data being stored SAVE light flashes every 5 seconds
Abnormal condition Buzzer alarms
The settings of the flow meter

In order to make sure the SD card work functionally, please follow the below configurations:

  1. Use the M50 menu to store the content you need.
  2. Use the M51 menu to choose when to start saving, how often to save, and how many times to save. Enter **:**:** for the start time of saving. When the number of storage cycles is entered as 9999, data storage is possible indefinitely.
  3. Sending the flow meter’s data to the “internal serial bus” , you need to choose it in the M52 menu.

Can we Fix SD Bulk SD CardS if the button gets lost?

Is it annoyed to find the lock button of SD Card getting lost? The data inside will be locked accidently, then how to fix this issue by easy way? Let’s check this video and renew the SD Card in minutes.

4GB SDHC Camera Card

4GB SD Cards Bulk SDHC Class 10

  • Support PDAs, Sport Camera, Smart Phones, Bluetooth speaker, Tablets, and the other memory-hungry devices
  • This card uses Alcor and SMI controller

Comments( 1 )

ByShermaine
in Good price for Class 10 SDHC 4GB, performance fits well with our speakers.

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