FDM-O2 oxygen gas detector

# Product Introduction
The FDM Oxygen Detector is a high-performance device integrated with an MCU and OLED display, and supports remote control operation. It is developed adopting the DS4 intelligent gas sensor, advanced very large-scale integrated circuit technology, proprietary digital-analog hybrid communication and other technologies. It boasts merits including excellent stability, high sensitivity, rapid response, long service life, built-in communication and self-diagnosis functions, as well as easy installation and maintenance. It fully demonstrates the superior performance of typical intelligent on-site monitoring instruments, and well meets the demand for high-reliability equipment in industrial site safety monitoring.


# Product Specifications
FDM-O2 Oxygen Gas Detector


# Product Features
- Multiple signal outputs: standard 4~20mA current output, low-limit alarm relay output and standard RS485 interface
- Equipped with OLED display and remote control operation; high-decibel audible and visual alarm (optional); fully adjustable alarm points across the entire measuring range
- Full-range digital temperature compensation to guarantee measurement accuracy
- Compatible with various remote control equipment such as PLC, DCS, control alarms and secondary instruments
- Automatically identifies the sensor and real-time monitors the operating status of the gas chamber
- Intrinsically safe circuit and explosion-proof housing design enabling safe, convenient and rapid on-site maintenance


# Advantages
- Ready for immediate use without preheating
- Automatic sensor identification function
- User-friendly maintenance
- Accurate factory pre-calibration
- Sensor performance detection and fault alarming for sensor failure judgment


# Technical Parameters
## Detection Principle
Solid-state polymer electrochemical gas detection technology
## Detection Mode
On-line monitoring, diffusion sampling
## Signal Output
Simultaneous 4-20mA and RS485 signal output (standard protocol or private protocol optional)
3-wire 4-20mA output connection cable: 3-core shielded cable
4-wire RS485 output connection cable: 4-core shielded cable
## Housing Material
Cast aluminum
## Flameproof Grade
ExdⅡCT6Gb
## Protection Grade
IP66
## Accuracy
± 5% F.S
## Operating Temperature
-40℃ ~ +60℃
## Operating Humidity
10% ~ 95% RH, non-condensing
## Expected Sensor Service Life
More than 3 years
## Operating Voltage
24V DC
## Operating Current
Less than 100mA at 24V DC
## Relay Output
Passive switch output or active output (contact capacity 24VDC@1A for active output)
## Total Unit Weight
1.14kg