1、 Overview of Leakage Gas Alarm Host Alarm Controller

The alarm controller is a centralized alarm controller for gas leakage and environmental detection, powered directly by the municipal power grid. This alarm controller receives standard 4-20mA signals. Any type of gas detector can emit 4-20mA signals and can also output standard 4-20mA signals (optional function). The accessible objects include: gas, temperature and humidity, atmospheric pressure, light, dust, noise, etc. One alarm controller can carry 96 gas detectors. The installation method of the gas alarm controller is wall mounted, and the controller is equipped with a large screen LCD display, which can be used to timely display the status of various parts of the system and information about alarm points. It is easy to operate and simple to use.

2、 Leakage gas alarm host alarm controller controller main parameters

Power supply: AC220V

Power consumption: less than 15W

Measurement units:% LEL,% VOL, PPM, PPB, ug/m3, mg/m3, db, Lux, ℃,% RH

Installation method: Wall mounted

Alarm setting: can be freely set

Received signal: 4-20mA; RS485 (standard Modbus protocol)

Alarm method: Sound and light alarm

Alarm storage: capable of storing over 8000 alarm records

Output contacts: 1-96 sets of passive normally open/normally closed contacts (24VDC/3A, AC220V/1A), output contacts can be interactively configured

Public output contacts: passive contacts, AC220V/5A

Temperature: -20~70 ℃, humidity: 20~95% RH

3、 Introduction to the working principle, structure, dimensions, and panel of the leak gas alarm host alarm controller controller

Working principle of controller 1

The CPU of the alarm controller cyclically detects the working status of each detector. When the detector detects that the gas concentration or other parameters in the environment exceed the alarm set value, the controller emits sound and light alarms and outputs linkage control signals according to the settings.

The system signal adopts a standard 4-20mA signal, and the controller has 1-96 sets of normally open/normally closed passive contact outputs with contact capacities of 24VDC/3A and 220VAC/1A.

The structure of the controller for this product adopts a wall mounted structure with a wall mounted structural component. First, fix the wall mounted structural components in appropriate positions on the wall, connect the power lines, signal lines, and output control lines, and then hang the controller on the structural components.

3. Chassis size of the controller

Chassis size: 430 * 320 * 103mm (length * width * height).

Introduction to Controller Panel 4

(1) Work status indicator lights: divided into main power work, backup power work, fault indication, and concentration alarm.

Main power work light: green, always on when the controller is working;

Backup power work light: green, always on when the controller is powered by the backup battery;

Fault indicator light: red, always on when the detector malfunctions;

Concentration alarm light: red. When the gas concentration in the monitored environment exceeds the alarm set value, the red indicator light flashes and accompanied by an audible alarm;

(2) Time and date display

(3) Dynamic display area

Dynamically display monitoring data and display functional parameters during functional operations.

(4) Button

Number keys: used in function settings to input function parameter values;

Directional keys: perform shift operations in function settings and flip screen operations during alarm queries;

Function button: Press this button to enter the function menu options;

Confirm "button: Confirm the setting of a certain function during the function operation;

Total number of alarms "button: View the total number of alarms in the alarm history interface;

Cancel button: Exit a function operation or exit a function operation during a function operation;

Delete "button: In the alarm history, delete alarm records that you do not want to keep;

Alarm History "button: query alarm records;

"Mute" button: Eliminate the current alarm sound;

Switch ": Used to switch the state, unit, detection object, decimal point during alarm setting, and jump to the specified alarm record in alarm record query.

For more menu functions, please feel free to call us for consultation

4、 Maintenance and Fault Repair of Leakage Gas Alarm Host Alarm Controller

1. Daily maintenance: Regularly check whether the gas alarm controller is working properly.

2. Troubleshooting

Analysis of the Causes of Fault Phenomena Handling measures

The system is not working The power supply is not connected, the circuit board connection wire is loose or disconnected Check if the circuit board connection wires are properly connected

3. Testing the lifespan, usage precautions, and explosion-proof performance of components

The service life of the detection component is 3 years under normal use. Please note the following situations:

*Do not install detectors in areas with water vapor or long-term water exposure;

*Avoid the impact of high concentration flammable gases caused by human activities;

*Avoid frequent power outages of the detector, as frequent power outages can cause unstable operation of the detection components;

*This product is an intrinsically safe explosion-proof instrument, with a safety barrier installed before the controller output terminal. The maximum allowable distributed capacitance and electrical induction of the transmission cable should not exceed 0.2 μ F and 0.3mH, and the maximum DC resistance of the transmission cable should not exceed 30 Ω.

5、 Leakage gas alarm host alarm controller system wiring diagram