High-Precision Temperature and 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., where precision meets innovation. We are dedicated to providing state-of-the-art solutions like our Modbus Temperature Measuring Pressure Transmitter, ensuring unparalleled accuracy and reliability for all your instrumentation needs.

Product Description

1. INTRODUCTION

This state-of-the-art product adheres meticulously to the MODBUS communication protocol, employing the sub-centralized RTU mode and RS485 half-duplex working mode for seamless integration and reliable performance.

Serial port configuration: no parity, 8 data bits, 1 stop bit.
Example: 9600, N, 8, 1 Explanation: 9600 bps, no parity, 8 data bits, 1 stop bit.
Our transmitter is versatile, supporting a wide range of serial baud rates: 1200, 2400, 4800, 9600, 19200, 38400, 57600, and 115200.
CRC checksum polynomial: 0xA001.
Data communication processes are meticulously handled in double-byte format. For floating-point data, ensure you read the decimal point accurately to determine precise data measurements.

Product Parameters

(1) Exemplary Read Command Format (03 Function Code)
A. Initiate the Read Command Format with Confidence.

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. Receive and Decipher the Read Data Format: An Example

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

(2) Illustrative Example of Writing Command Format (06 Function Code)
A. Masterfully 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	0X06	0X00	0X00	0X00	0X02	0X08	0X0B

1. Effortlessly Return and Interpret the Read 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. Exception Response Handling with Precision

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

4. Comprehensive Guide to Supported Commands and Their Meaning

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 host-sent baud rate, updating the transmitter's baud rate to the new target value after confirmation.
Upon modifying the address, the transmitter will first reply with the pre-modified address and then automatically update its address to the new specified value.
Issuing the factory save and reply command returns the original value, indicating the transmitter has successfully received and accepted the host's command.
Important: Restoring factory data means factory-saved parameters may differ from user-saved ones. Consequently, address, baud rate, and calibration data could change. Therefore, you must re-scan the transmitter after restoring factory settings.
Users are permitted to modify only three specific data points: address, baud rate, and zero offset.
For calibration or modification of calibration data, please contact our company to obtain the necessary calibration software. Unauthorized modification attempts by users will result in a command exception code being output by the transmitter. Always use our official calibration software for such tasks.
For data read as a floating point number, e.g., 6.000, the protocol may communicate it as an integer (6000). The decimal point is then used to interpret this—if the decimal point is 3, then 6000/10^3 equals 6.000.

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Certifications

FAQ

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

A: Absolutely! You can purchase most accessories directly from us. However, please note that certain accessories involving patented designs or intellectual property may not be available for direct purchase.
For more detailed information, please contact our dedicated sales team.

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

A: Yes, you can! However, this opportunity is contingent upon your annual purchase volume and our mutual long-term relationship. We are seeking business partners who are committed to building a sustainable and trustworthy partnership.