Industrial Grade Absolute Pressure Transmitter with Modbus Connectivity

• Customization: Available
• Measuring Medium: Gas
• Model Measuring Core: Ceramic Chip
• Model NO.: SAC-131WX
• Measuring Temperature: -20~50ºC
• 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., your trusted partner in advanced instrumentation solutions.

Product Description

1. INTRODUCTION

This cutting-edge protocol adheres impeccably to the MODBUS communication standards, employing the centralized RTU mode with RS485 half-duplex for seamless and efficient data exchange.

Serial port configuration: No parity, 8 data bits, and 1 stop bit for optimized performance.
Example Configuration: 9600,N,8,1 - Interpreted as: 9600 bps, no parity, 8 data bits, and 1 stop bit.
Our transmitter supports an extensive range of serial baud rates including: 1200, 2400, 4800, 9600, 19200, 38400, 57600, and 115200.
CRC checksum polynomial: 0xA001 ensures data integrity.
The data communication process is meticulously handled in compliance with double-byte shaped data format. For floating point numbers, ensure to read the decimal point to accurately interpret the data magnitude.

Product Parameters

(1) Exemplary Command Format for Reading (Function Code 03)
A. Send 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. Return Data Format for Reading: Illustration

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

(2) Exemplary Command Format for Writing (Function Code 06)
A. Send 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. Return Data Format for Writing: Illustration

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: Their Meanings and Data Interpretations

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 altering the baud rate, the transmitter effortlessly responds with the baud rate provided by the host for modification. Upon response, the transmitter's baud rate seamlessly transitions to the newly specified value.
Upon changing the address, the transmitter promptly acknowledges with the pre-update address. Following the acknowledgment, the transmitter's address is automatically updated to the new value.
When you execute the save and reply factory command, the transmitter returns the original value, signifying its successful acceptance of the host's command.
Note that restoring factory data may result in differences in parameters saved by the factory compared to user-saved settings. This includes address, baud rate, and calibration data—requiring a re-search for the transmitter after restoration.
Users are authorized to modify only three parameters: address, baud rate, and zero offset.
For calibration or changes in calibration data, please contact our company to obtain the necessary calibration software. User-initiated commands to alter calibration data will result in the transmitter outputting a command exception code. Always use our provided calibration software for such modifications.
Should the data to be read be a floating-point number, such as 6.000, the protocol mandates communication as an integer. Thus, the data reads as 6000. To convert it, utilize the decimal point for calculation: e.g., with a decimal point of 3, 6000/10^3 results in 6.000.

Product Showing

Certifications

FAQ

1. Q: Can I purchase accessories for any of your products?

A: Absolutely! While most accessories are available for purchase, please note that certain items with patented designs or protected intellectual property may not be for sale.
For more detailed information, please contact our dedicated sales team.

2. Q: Is it possible to become an exclusive distributor for your products?

A: Yes, it is possible. However, this opportunity depends on your annual purchase volume and the potential for a long-term, mutually beneficial relationship. We seek partners who are committed to fostering a reliable and enduring business partnership.
Together, we aim to establish a trusting and long-lasting collaboration.