High-Accuracy Industrial Air Pressure Sensor for OEM Solutions

• Customization: Available
• Measuring Medium: Gas
• Measuring Temperature: -20~50ºC
• Model NO.: SAC-PCM-302
• Measurement Form: Gauge Pressure, Absolute Pressur
• Measurement Range: -0.1MPa ~ 0MPa ~ 6MPa
• Measurement Accuracy: 0.5%F.S
• Measurement Stability: ±0.2%Fs/Year
• Overload Pressure: 150%Fs
• Operating Temperature: -20~50ºC
• Compensation Temperature: -20~50ºC
• Working Humidity: 95%Rh
• Storage Temperature: -40~85ºC
• Trademark: Aice Tech
• Origin: China
• HS Code: 9026202000

Product Description

Welcome to Jiangsu Aice Instrument Technology Co., Ltd., where innovation meets precision and quality! Discover the excellence in our OEM Pressure Transmitter Air Pressure Controller.

Product Description

1. INTRODUCTION

This advanced protocol meticulously adheres to the MODBUS communication protocol, employing the sub-centralized RTU mode RS485 half-duplex working mode for impeccable performance.

Serial port configuration: No parity, 8 data bits, and 1 stop bit for flawless communication.
Example: 9600, N, 8, 1. This translates to: 9600bps, no parity, 8 data bits, and 1 stop bit for seamless data transmission.
Our transmitter supports an extensive range of serial baud rates, including: 1200, 2400, 4800, 9600, 19200, 38400, 57600, and 115200, catering to diverse needs.
The polynomial for CRC checksum is: 0xA001, ensuring data integrity and reliability.
The entire data communication process is handled in accordance with double-byte shaped data. When dealing with floating point numbers, it is essential to read the decimal point to accurately determine the data size.

Product Parameters

(1) Example of Read Command Format (03 Function Code)
A. Sending the Read Command Format.

Address	Function Code	Data start(H)	Data start(L)	Data number(H)	Data number(L)	CRC16 (L)	CRC16(H)
0X01	0X03	0X00	0X00	0X00	0X01	0X84	0X0A

B. Returning Read Data Format: Example

Address	Function Code	Data length	Data(H)	Data(L)	CRC16 (L)	CRC16(H)
0X01	0X03	0X02	0X00	0X01	0X79	0X84

(2) Example of Writing Command Format (06 Function Code)
A. Sending the Write Command Format.

Address	Function Code	Data start(H)	Data start(L)	Data number(H)	Data number(L)	CRC16 (L)	CRC16(H)
0X01	0X06	0X00	0X00	0X00	0X02	0X08	0X0B

1. Returning Write Data Format: Example

Address	Function Code	Data start(H)	Data start(L)	Data(H)	Data(L)	CRC16 (L)	CRC16(H)
0X01	0X06	0X00	0X00	0X00	0X02	0X08	0X0B

1. Handling Exception Responses

Address	Function Code	Exception code	CRC16(L)	CRC16(H)
0X01	0X80+Function Code	0X01(Illegal functions)
		0X02(Illegal data address)
		0X03(Illegal data)

4. Supported Commands: Detailed Interpretation of Commands and Data

Function Code	Data start address	Data number	Data bytes	Data range	Command Meaning
0x03 Function code to read data
0x03	0x0000	1	2	1-255	Read slave address
0x03	0x0001	1	2	1200	Baud rate reading

0x03	0x0003	1	2	#### ###.# ##.## #.###	The decimal points represent respectively 0-3 decimal places
0x03	0x0002	1	2	0- Mpa 1- Kpa 2- Pa 3- Bar 4- Mbar 5- kg/cm2 6- psi 7- mh2o 8- mmh2o	Pressure units
0x03	0x0004	1	2	-32768~32767	Measured output Value
0x03	0x0005	1	2	-32768~32767	Transmitter range zero point
0x03	0x0006	1	2	-32768~32767	Transmitter range full point
0x03	0x000C	1	2	-32768~32767	Zero offset value, factory default is 0
0x06 Function code reading data
0x06	0x0000		2	1-255
0x06	0x0001		2	1200 2400 4800 9600 19200 38400 57600 115200	Modify baud rate
0x06	0x000C		2	-32768~32767	Zero offset value Pressure output value = calibration measurement value + zero offset value
0x06	0x000F		2	0-Save to user area 1-Save to factory area
0x06	0x0010		2	1-Return factory parameters

Installation Instructions

When modifying the baud rate, the transmitter will respond with the updated rate provided by the host. Upon confirmation, the transmitter's baud rate will seamlessly transition to the new target value.
When adjusting the address, the transmitter will first confirm the current address. Once acknowledged, the address will be automatically updated to the new specified address.
Issuing the save and reply factory command will revert the transmitter to its original settings, indicating that the transmitter has successfully received and accepted the command from the host.
When restoring factory settings, note that the saved parameters may differ from user-defined settings. As such, the address, baud rate, and calibration data may vary, necessitating a fresh search for the transmitter once factory parameters are restored.
Users are permitted to modify only three parameters: address, baud rate, and zero offset.
For calibration or altering calibration data, please contact us for the specialized calibration software. Unauthorized modification commands by the user will trigger an exception code in the transmitter. Always utilize our calibration software for any changes.
When reading data identified as a floating point number (e.g., 6.000), and the protocol specifies communication as shaped data (e.g., 6000), the number is read as 6000. The decimal point is then calculated to interpret 6.000. For instance, if the decimal point is 3, then 6000/10^3 yields 6.000.

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Certifications

FAQ

1. Q: Can I buy any of your product accessories?

A: Absolutely! Most of our product accessories are available for purchase. However, some items with patented designs or intellectual property may not be available for sale.
For more detailed information, please contact our dedicated sales team.

2. Q: Can I become your exclusive distributor?

A: Indeed, you can! This opportunity is contingent on your annual purchase volume and the strength of our long-term relationship. We seek business partners who are committed to fostering a mutual relationship of trust and growth.