Heavy-Duty Explosion Proof Pressure Gauge for Precision Measurement

• 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 precision meets innovation. We are dedicated to delivering state-of-the-art solutions in pressure and temperature measurement, ensuring safety and reliability in every application.

Product Description

1. INTRODUCTION

Our protocol adheres strictly to the MODBUS communication standards, utilizing the sub-centralized RTU mode along with the RS485 half-duplex operational mode within the MODBUS framework.

Serial port configuration: no parity, 8 data bits, 1 stop bit.
Example: 9600, N, 8, 1 Interpretation: 9600bps, no parity, 8 data bits, 1 stop bit.
This transmitter is versatile, supporting a range of serial baud rates: 1200, 2400, 4800, 9600, 19200, 38400, 57600, and 115200.
CRC checksum polynomial: 0xA001.
The data communication process adheres to a double-byte format. In cases where data represents a floating-point number, it is essential to read the decimal point to accurately determine the data size.

Product Parameters

(1) Exemplary Read Command Format (03 Function Code)
A. Example of Sending 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 of Returning 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 of Sending 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. B. Example of Returning Write 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 Response Return Details

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 along with Their Meanings and Corresponding 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

When adjusting the baud rate, the transmitter will confirm by responding with the baud rate provided by the host. Once confirmed, the transmitter's baud rate will seamlessly transition to the new target value.
Upon modifying the address, the transmitter will first respond with the pre-modification address. Following this confirmation, the transmitter's address will be updated automatically.
Issuing a save and reply command will yield the original value, indicating that the transmitter has successfully acknowledged and accepted the host's command.
While restoring factory settings, please note that factory-saved parameters may differ from user-saved ones, including address, baud rate, and calibration data. A re-search of the transmitter is necessary post-restoration.
Users are permitted to modify only three key data points: address, baud rate, and zero offset.
For calibration or modification of calibration data, contact us for the specialized calibration software. Unauthorized modification commands will result in a command exception code. Ensure to use our calibration software for accurate adjustments.
For reading data identified as a floating point number (e.g., 6.000) but communicated as shaped data (e.g., 6000), the protocol specifies using the decimal point for conversion. For instance, with a decimal point of 3, 6000/10^3 results in 6.000.

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Certifications

FAQ

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

A: Absolutely! We offer most of our accessory range for purchase. However, some items protected by patents or intellectual property rights are not available for sale.
For detailed information, please contact our sales team.

2. Q: Can I become your exclusive distributor?

A: Yes, you can! However, exclusivity is contingent upon your annual purchase volume and the establishment of a solid, long-term business partnership.
We seek partners capable of fostering a mutual, enduring relationship of trust.