CC01 pressure difference temperature two in one sensor

描述

Product Specifications

Basic Parameters

• Product Model: CC01
• Measurement Type: Pressure Difference+Temperature 2-in-1
• Product Weight: 0.1kg
• Appearance Dimensions: 102.9mm × 60mm × 27.5mm
• Shell Material: Aluminum Alloy
• Protection Level: IP67 (Dustproof and Waterproof)
• Pagoda Joint Specification: M10 × 1 Thread, Outer Diameter 8mm
• High Pagoda Head: Connected to Indoor Negative Pressure Environment
• Low Pagoda Head: Connected to Outdoor Normal Pressure Environment

Technical Parameters

• Differential pressure measurement range: -100Pa~+100Pa (customizable)
• Temperature measurement range: -20 ℃~80 ℃
• Measurement accuracy: 0.2% FS (differential pressure)
• Response time:<100ms
• Operating voltage: DC12V-24V
• Output signal: Modbus RTU
• Default communication parameters: 9600bps, 8 data bits, no verification, 1 stop bit (8N1)

Product features

1. High precision measurement: 0.2% FS accuracy, can accurately measure small differential pressure changes
2. Fast response:<100ms Fast response time, real-time feedback on pressure changes
3. Sturdy and durableAluminum alloy shell, IP67 protection level, suitable for harsh industrial environments
4. compact designCompact size for easy installation on devices and pipelines with limited space
5. Dual parameter measurementSimultaneously measuring pressure difference and temperature to reduce equipment configuration complexity
6. long-term stabilityStrict aging testing and quality control, small drift, long service life

Detailed explanation of Modbus communication protocol

1. Basic communication parameters

• Protocol type: Modbus RTU
• Default slave address: 0x01 (modifiable range 0x01-0xFE)
• Default baud rate: 9600bps (can be modified to 2400/4800/14400/19200/38400/56000/57600/115200)
• Data format: 8-bit data bits, no checksum, 1-bit stop bit (8N1)

2. Register Mapping Table

3. Function code description

Function code 03H: Read hold register

• Request format:

  [从站地址][03][起始地址高][起始地址低][寄存器数高][寄存器数低][CRC低][CRC高]

• Response format:

  [从站地址][03][字节数][数据1高][数据1低]...[数据N高][数据N低][CRC低][CRC高]

Function code 06H: Write to a single register

• Request format:

  [从站地址][06][寄存器地址高][寄存器地址低][数据高][数据低][CRC低][CRC高]

• Response format: Same as request

Function code 10H: Write to multiple registers

• Request format:

  [从站地址][10][起始地址高][起始地址低][寄存器数高][寄存器数低][字节数][数据1高][数据1低]...[CRC低][CRC高]

• Response format:

  [从站地址][10][起始地址高][起始地址低][寄存器数高][寄存器数低][CRC低][CRC高]

4. Communication example

Example 1: Read temperature value (address 0x0003)

• Request:

  01 03 00 03 00 01 74 09

• Slave address: 0x01
• Function code: 0x03
• Starting address: 0x0003
• Number of registers: 0x0001
• CRC16: 0x0974
• Response (assuming a temperature of 25.6 ℃):

  01 03 02 01 00 79 84

• Slave address: 0x01
• Function code: 0x03
• Byte count: 0x02
• Data: 0x0100 (256) → 256/10=25.6 ℃
• CRC16: 0x8479

Example 2: Read differential pressure value (address 0x0004, 32-bit floating-point)

• Request:

  01 03 00 04 00 02 44 09

• Slave address: 0x01
• Function code: 0x03
• Starting address: 0x0004
• Number of registers: 0x0002 (32-bit floating point occupies 2 registers)
• CRC16:0x0944
• Response (assuming pressure difference is -5.2Pa):

  01 03 04 C0 A6 66 66 3F 23

• Slave address: 0x01
• Function code: 0x03
• Byte count: 0x04
• Data: 0xC0A66666 (32-bit floating point, -5.2)
• CRC16:0x233F

Example 3: Modify device address to 0x02

• Request:

  01 06 00 10 00 02 89 CF

• Slave address: 0x01
• Function code: 0x06
• Register address: 0x0010
• Data: 0x0002
• CRC16:0xCF89
• Response: Same as request

Installation and wiring instructions

1. Mechanical installation

1. Select the measurement point position to ensure no strong vibration or electromagnetic interference
2. Use M10 × 1 thread to fix the sensor in the measurement position
3. Connect the high tower head to the indoor/negative pressure side, and the low tower head to the outdoor/normal pressure side
4. Ensure good sealing to prevent air leakage from affecting measurement accuracy

2. Electrical wiring

• Power Wiring:
• Positive pole:+12V~+24V DC
• Negative pole: GND
• Communication Wiring:
• RS485-A: Data+
• RS485-B: Data -
• It is recommended to use twisted pair shielded wires and connect 120 Ω terminal resistors at both ends of the bus

3. Wiring Diagram

[电源+] ---- +12V-24V DC
[电源-] ---- GND
[RS485-A] -- 数据+
[RS485-B] -- 数据-
[高宝塔头] -- 接负压侧
[低宝塔头] -- 接常压侧

Safety Precautions

1. Electrical Safety:

• Before operation, all relevant power sources must be cut off
• Confirm power failure using a non-contact voltage tester
• Strictly comply with national electrical safety regulations

1. Power requirements:

• Only use DC12V-24V power supply
• Ensure power stability and fluctuation not exceeding ± 10%

1. Installation environment:

• Avoid humid, high temperature, and strong electromagnetic interference environment
• Ensure work area is dry and clean

1. Personal protection:

• Wear insulated gloves and safety goggles during operation
• Prepare emergency equipment such as fire extinguishers

1. Wiring inspection:

• Carefully check all wiring before powering on
• Ensure no short circuits or incorrect connections

1. Maintenance:

• Regularly check sensor status
• Clean tower joints to ensure unobstructed air flow
• Avoid mechanical shock and vibration

Application scenarios

1. Medical environment: Negative pressure ward, operating room pressure difference monitoring
2. Industrial control: Pipeline pressure monitoring, dust removal system monitoring
3. HVAC system: Cleanroom pressure difference control, ventilation system balance
4. Agricultural Breeding: Environmental Control of Breeding Workshop
5. Laboratory: Differential Pressure Monitoring of Biosafety Cabinet and Ventilation Cabinet

Troubleshooting