Overview
The alarm controller is a single-channel and multi-channel 4-20mA/RS485 transmitter input intelligent controllable system with high stability, high accuracy and high intelligence. The system integrates sound and light alarm and provides a normally open relay control terminal. It is mainly used to detect flammable or toxic gases, display gas numerical indicators, and automatically alarm, exhaust, trip and other actions when the gas index exceeds or falls below the set standard.
Features
1. Highlight large digital tube display
2. Channel indicator
3. Display all detected gas concentration values and units
4. Two-level alarm, which can be set freely by the user
5. Up to 6 passive switches
6. Standard RS485 upload interface, can upload DCS, PLC system and computer host
7. Compatible with two-wire and three-wire 4-20mA equipment
8. Visible and audible alarm signals
Principle
The system provides 24V standard DC voltage to the external transmitter, collects the input signal of the standard 4-20mA transmitter, and analyzes and processes it to complete the digital display and alarm operation.
Applications
Gas safety detection and alarm in places that require fire prevention, explosion prevention and poisoning prevention, such as petroleum exploration and production, oil and gas transportation, oil refining, metallurgy, power plants, chemical industry, oil depots, liquefied gas stations, mines, tunnels, tunnels, underground pipelines, etc
Steps
1. Users can freely choose the type and access port of the attached transmitter
2. On-site detection and alarm through simple settings
Notice
• Operating Pressure Range is 86~ 108Kpa
• Ambient Temperature 0~ 40 ℃
• Working environment humidity does not exceed 90% RH
