Reliable Marine Pressure Sensor for Accurate Air Pressure Readings

• 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., your trusted partner in superior instrumentation solutions. Discover the cutting-edge Marine Pressure Transducer Air Pressure Gauge designed to meet the highest standards of accuracy and reliability.

Product Description

1. INTRODUCTION

This advanced protocol adheres to the MODBUS communication standards, utilizing a sub-centralized RTU mode with RS485 half-duplex operational mode. It ensures seamless integration and optimal performance within the MODBUS framework.

Serial port configuration: no parity, 8 data bits, 1 stop bit.
Example: 9600,N,8,1 Explanation: 9600bps transmission speed, no parity bit, 8 data bits, 1 stop bit.
The transmitter is compatible with the following serial baud rates: 1200, 2400, 4800, 9600, 19200, 38400, 57600, and 115200.
CRC checksum polynomial: 0xA001.
In data communication, all processes handle double-byte shaped data. For floating-point numbers, the decimal point must be read to accurately determine the data size.

Product Parameters

(1) Effortless Data Retrieval: Read Command Format with (03 Function Code) Example
A. Seamless Data Acquisition: Send 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. Receive Accurate Data: Return to 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) Precision Control: Example of Writing Command Format with (06 Function Code)
A. Efficient Data Transfer: Send 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. Reliable Data Feedback: Return to 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 Returns: Handle Errors with Ease

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: Comprehensive Guide to Commands 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 adjusting the baud rate, the transmitter will respond by echoing the baud rate sent by the host for modification. Once the response is received, the transmitter's baud rate will be updated to the new target value seamlessly.
Upon modifying the address, the transmitter will first reply with its current address. After this confirmation, the transmitter will automatically update to the new address specified.
To save and confirm the factory command, the transmitter will return to its original value, indicating successful acceptance of the host's command.
Note that when restoring factory settings, the parameters saved by the factory might differ from those saved by the user. This means the address, baud rate, and calibration data may vary. Therefore, it is crucial to re-scan the transmitter after restoring factory parameters.
Users are permitted to modify only three specific data points: address, baud rate, and zero offset.
For calibration or change in calibration data, please contact our company for the transmitter's calibration software. Any user attempt to modify calibration data directly will result in the transmitter outputting a command exception code. Utilize our calibration software for any calibration data modifications.
When reading data identified as a floating point number, such as 6.000, the protocol specifies that data is transmitted as an integer. For instance, 6000 is communicated and then calculated as 6.000 by dividing by 10^3. Hence, 6000 divided by 10^3 results in the value 6.000.

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FAQ

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

A: Absolutely! Most of our accessories are available for purchase. However, please note that a few items with patented designs or covered by intellectual property rights might be unavailable.
For more details, please get in touch with our sales team, who will be happy to assist you further.

2. Q: Can I be your exclusive distributor?

A: Yes, indeed! However, exclusivity is contingent upon your annual purchase volume and our long-term relationship. We seek business partners who can establish and maintain a trusted, long-term collaboration with us.
We believe in building relationships founded on mutual trust and shared goals.