Heavy-Duty Pressure Transmitter for Hazardous Environments and Industries

• 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. Discover the cutting-edge technology and exemplary craftsmanship behind our Explosion Proof Pressure Transmitter Absolute Pressure Sensor, designed to deliver unparalleled accuracy and reliability in the most demanding environments.

Product Description

1.INTRODUCTION

This protocol seamlessly integrates with the MODBUS communication protocol, utilizing the sub-centralized RTU mode and RS485 half-duplex working mode.

Serial port configuration includes: no parity bit, 8 data bits, and 1 stop bit.
Configuration Example: 9600,N,8,1 means 9600bps baud rate, no parity, 8 data bits, and 1 stop bit.
The transmitter is versatile and supports an extensive range of serial baud rates: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200.
The CRC checksum polynomial used is 0xA001.
Data communication adheres strictly to double-byte formatted data. For floating point numbers, the decimal point must be read to ascertain data magnitude.

Product Parameters

(1) Exemplary Read Command Format (03 Function Code)
A. Example: 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. Example: Returning the Read Data Format

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 (06 Function Code)
A. Example: 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	0X06	0X00	0X00	0X00	0X02	0X08	0X0B

1. B. Example: Returning the Read Data Format

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 Handling: 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: Explanation of Commands and Data Significance

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 you modify the baud rate, the transmitter will provide feedback with the current baud rate as sent by the host. Upon this acknowledgment, the transmitter will then adjust its baud rate to the new specified value.
When changing the address, the transmitter replies with its current address before making any modifications. Once acknowledged, the transmitter's address will automatically update to the new value.
Issuing the save and reply factory command will result in the transmitter returning the original values, indicating that it has successfully accepted the host's command.
Please note that restoring factory settings may revert parameters to their original factory defaults, which might differ from user-saved settings. As such, the address, baud rate, and calibration data may change, necessitating a re-search of the transmitter after the restoration process.
Users are permitted to modify only three parameters: address, baud rate, and zero offset.
For calibration or changes to calibration data, please contact our company for the appropriate transmitter calibration software. Unauthorized changes to calibration data can trigger command exceptions in the transmitter. Always use our specified calibration software for such modifications.
If the data to be read is a floating-point number, like 6.000, but the protocol treats it as an integer, it will be read as 6000. To convert it back, use the decimal point as a reference—e.g., if the decimal point is 3, you divide 6000 by 10^3 to achieve 6.000.

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Certifications

FAQ

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

A: Absolutely, you can! Most of our accessories are available for purchase. However, certain items with patented designs or intellectual property restrictions may not be sold.
For more specific information, please reach out to our dedicated sales team.

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

A: Yes, it is possible. However, this opportunity depends on your annual purchase volume and our potential for a long-term, mutually beneficial relationship. We seek business partners who can establish and maintain a foundation of trust.
Building a long-term relationship of trust is essential for us to consider exclusivity.