Reliable China-Made Pressure Transmitter for Accurate Temperature Readings

• Customization: Available
• Measuring Medium: Gas
• Measuring Temperature: -20~50ºC
• Model NO.: SAC-PCM-302
• 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 precision instrumentation! Discover unparalleled quality and reliability with our advanced industrial pressure transmitters and temperature measurement solutions, crafted to meet the highest standards.

Product Description

1. INTRODUCTION

This advanced protocol adheres to the MODBUS communication standard, utilizing the sophisticated sub-centralized RTU mode and RS485 half-duplex operation within the MODBUS framework.

Serial Port Configuration: No parity, 8 data bits, 1 stop bit.
Example: 9600, N, 8, 1 Explanation: Operates at 9600bps, with no parity, 8 data bits, and 1 stop bit.
The transmitter offers versatile support for various serial baud rates: 1200, 2400, 4800, 9600, 19200, 38400, 57600, and 115200.
CRC Checksum Polynomial: 0xA001.
Data communication adheres to a double-byte format for processing. When handling floating-point numbers, ensure the decimal point is read accurately to determine the data size.

Product Parameters

(1) Exemplary Read Command Format (Function Code 03)
A. Issuing 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. Data Format Returned Upon Read Command: Example

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

(2) Exemplary Write Command Format (Function Code 06)
A. Issuing 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. Data Format Returned Upon Write Command: 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 Returns

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 and the Significance of Each Command 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

To modify the baud rate, the transmitter will acknowledge with the host-specified baud rate. Once acknowledged, the baud rate will automatically update to the new target value.
When changing the address, the transmitter will respond with the pre-modification address. After this acknowledgment, the address will be automatically updated to the new one.
Issuing the save and reply factory command will result in the transmitter returning the original value, indicating successful command recognition and acceptance.
When restoring factory settings, note that factory-saved parameters may differ from user-saved ones. Address, baud rate, and calibration data may vary, necessitating a re-scan of the transmitter post-restoration.
Users are only permitted to modify three specific data points: address, baud rate, and zero offset.
For calibration or modification of calibration data, please contact our company to obtain the appropriate calibration software. User-initiated commands to change calibration data will cause an exception. Always use our provided software for these modifications.
If data readout is a floating point number like 6.000, but the protocol requires integer data communication (e.g., 6000), calculate the floating point by acknowledging the decimal point: 6000/10^3 equals 6.000.

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Certifications

FAQ

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

A: Absolutely! You can purchase most of our high-quality accessories. However, certain items with patented designs or protected intellectual property may not be available for sale.
For more details, please contact our dedicated sales team.

2. Q: Can I become your exclusive distributor?

A: Yes, indeed. However, this opportunity depends on your annual purchase volume and our long-term partnership. We seek business partners who can foster a trustworthy, lasting relationship with us.