Overview

FDM Gas Device is a high-performance product with built-in MCU, OLED display and remote control operation. Its characters such as good stability, high sensitivity, fast response, long service life, communication and self- diagnosis functions, convenient installation, and maintenance, etc., fully demonstrate the advanced performance of typical intelligent on-site monitoring instruments, and greatly satisfies the industrial on-site safety monitoring requirements for high reliability of equipment.

This product complies with the general technical requirements for work- place environmental gas detection and alarm instruments specified in the Chinese national standard GB12358-2006.

Features

Use Without Preheating

The intelligent hardware design of the sensor makes it remain working condition without power supply, so that gas monitoring can be performed immediately after power-on anytime and anywhere. It also ensures that the equipment can obtain real-time on-site measurement information after power-on in time after unexpected power failure.

Self-identification Function

FDM device has AI smart sensor identity information identification, detection gas type, measurement concentration range, sensor independent identification code, etc., which is conducive to the establishment of unique identification characteristics between sensors and instruments in the after-sales maintenance process, and avoids wrong matching of sensors.

Easy Maintenance

The sensor part adopts a plug-and-play smart sensor, which can be hot-swapped with electricity, supports secondary offline calibration in after-sales service, and one-click restore factory calibration design. Plug and play, realizes off-line calibration, does not need to bring dangerous gas into the detection environment for ventilation calibration of the instrument, avoids safety risks and pollution to the field environment, and makes maintenance safer, more convenient and simpler.

Accurate Factory Pre-calibration

Each gas device has been professionally calibrated by the factory, and the calibration information is stored in the internal chip of the product, and the user can use it directly without recalibration. The factory calibration adopts diffusion gas calibration and simulated environmental climate calibration method, which is closer to the real application environment of the user's site, which improves the accuracy of the diffusion measurement data.

Sensor Performance Detection and Failure Judgment Fault Alarm

Intelligent gas sensor performance and life self-inspection, whether there is a measured gas or not, the life and performance indicators are regularly self-inspected, and a warning signal is output to prompt sensor maintenance or sensor replacement.
This function provides more reliable operating data for intelligent instruments, making gas detection instruments have excel- lent safety, reliability, and remote maintenance. The user can obtain sensor information, such as normal operation of the sensor, weak sensor performance, sensor failure or falling off through commands, providing early warning of sensor abnormalities and greatly improving safety assurance.

Technology Specifications

Principle

Detection

Output Signal Interface

Housing Material

Solid Polymer Electrochemical Sensing Technology

On-line monitoring, diffusion

Simultaneously output 4-20mA and RS485 signal (Optional standard protocol or private protocol)

Three-wire 4-20mA output connection cable: 3-core shielded cable

Four-wire RS485 output connection cable: 4-core shielded cable

Cast aluminum

Flameproof Grade

ExdⅡCT6Gb

Accuracy

± 5% F.S

Operating Temperature

-40℃ ~ +60℃

Operating Humidity

10% ~ 95% RH Non-condensing

Sensor Life Expectancy

Supply Voltage

Supply Current

Relay Output

Weight

> 3 years

24V DC

< 100mA @ 24V DC

Passive switch output or active output (contact capacity 24V DC@1A when active output)

1.14kg

Product

FDM Gas Device

Gas

Oxygen

Partnumber

05-FDM-O2-25-S20-02

05-FDM-O2-25-P20-02

Range

0-25%vol

Resolution

0.1%vol

Response Time

< 3s (T90 < 60s)

Remarks

Standard Protocol/4-20mA

Private Protocol/4-20mA

Applications

· Gas Safety Monitoring in the Power Industry

· Industrial Process Gas Analysis

· Industrial Emission Exhaust Gas Monitoring

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Protection Grade

IP66

· Food Industry