FD820CG Wall-Mounted Micro-Differential Pressure Transmitter | Integrated Monitor for Temperature, Humidity & Pressure in Clean Environments
The FD820CG wall-mounted micro-differential pressure transmitter is a high-performance device customized for micro-differential pressure detection in critical application environments. Integrating the latest digital technology in the field of sensor manufacturing, it completely solves the drift problem of small-range transmitters through precise digital temperature compensation and non-linear correction algorithms. The device supports simultaneous monitoring of multiple parameters: differential pressure (0-50Pa~2500Pa), temperature (0℃~60℃), and humidity (0%~100%RH), with high accuracy of 0.5%F.S/1.0%F.S and long-term stability of 0.2%F.S/year. Equipped with multiple output signal options (4-20mA, RS485, etc.) and MODBUS RTU protocol, it supports flexible wall-mounted or embedded installation, with optional Ex ia IIB T6 Ga explosion-proof configuration, serving as a reliable monitoring core for clean workshops, medical negative pressure environments and other scenarios.
Features
- Measuring clean, dry, non-corrosive gases
- A variety of shapes and structures and output method
- Intelligent circuit board, no moving parts,stable and reliable performance
- Can be wall-mounted or embedded for easy installation
- Automatic zero setting in load pressure
- Differential pressure, temperature, humidity multi-configuration display
Products Parameters
| Range | Differential:0-50Pa~2500Pa,Humidity:0%~100%RH,Temperature:0℃~60℃ |
| Overload Capacity | Allows overload pressure 2 times and destroys pressure 4 times the sensor range |
| Accuracy | DP:0.5%F.S 1.0%F.S(optional);Humidity:3%F.S(5%RH~95%RH), TEM:0.5%F.S |
| Long Term Stability | 0.2%F.S/Year |
| Operating Temperature | 0℃~60℃ |
| Power Supply | 16V~28V DC(Recommend 24V DC) |
| Output Signal | 4mA~20mA DC,1V ~ 5V DC,RS485(Optional),RS485+Relay |
| Protocol | MODBUS RTU |
| Explosion-Proof | Ex ia IIB T6 Ga |
| Warranty Period | 12 months |
Applications
- Pharmaceutical Industry: Pressure difference, temperature and humidity monitoring in pharmaceutical factory clean workshops and sterile laboratories
- Electronic Manufacturing: Micro-differential pressure environmental control in electronic clean workshops
- Healthcare: Pressure monitoring in infectious disease rooms, hospital negative pressure isolation wards and negative pressure operating rooms
- Emergency Medical Services: Synchronous control of negative pressure environment, temperature and humidity in ambulances
Product Drawing


Product dimensions, specifications and parameters are for reference only. For specific details, please contact us, and we will provide you with professional answers.
Packing and Shipping
FAQ
Q: How soon can you arrange your production?
A: Once getting your product confirmation and receiving the prepayment, the production will be started immediately.
Q: How long is the delivery time for the product?
A: We will provide a specific delivery time based on your order quantity. For orders of 1 to 30 pcs, the delivery time is approximately 2 to 5 working days.
Q: How do you control your quality ?
A: Full inspection process (Incoming Material Screening, Process Control, and Performance Verification) to ensure quality + good warranty service(1 year free to change a new one without any human damage factors).
Q: What certificates do you have ?
A: We hold 6 invention patents, possess certifications for CE, ATEX, and SIL, and are a member of the HART Protocol. And before the delievry of goods, quality and safety inspection certification issued by third parts also can be offered.
Q: What's your warranty terms?
A: We offer 12 months warranty time.
Q: Can you provide ODM/OEM & Customized service?
A: Yes, OEM and ODM are both available, we have the professional R&D dept which can provide professional solutions for you.