The alarm controller is a single-channel and multi-channel 4-20mA/RS485 transmitter input signal into an intelligent controllable system. The product has the characteristics of high stability, high accuracy and high intelligence. It has abundant external control ports. Users can freely choose the type and access port of the transmitter, and can perform on-site detection and alarm through simple settings.
The current version of the system has integrated sound and light alarms, and provides relay normally open control terminals (users can easily connect external alarms or other devices that need to be controlled). This system is mainly used in occasions that need to detect flammable or various toxic gases. When the index of a certain gas to be tested exceeds or falls below the set standard, the system will automatically perform a series of alarm actions, such as alarm, exhaust, trip, etc. (according to different settings of the user) different).
1. Chinese operation interface, intuitive and easy to understand
2. With time display,
3. The alarm record can be checked, and the highest concentration value of the alarm is recorded
4. Display all detected gas concentration values, units and the name of the gas to be checked
5. Two-level alarm, which can be set freely by the user
6. Up to 6 passive switching values, and can be controlled freely by partition
7. Standard RS485 upload interface, which can upload DCS, PLC system and computer host
8. Compatible with two-wire and three-wire 4-20mA equipment
9. Visual and audible alarm signal
Detection principle: The system provides 24V standard DC Voltage to the external transmitter, collects the input signal of the standard 4-20mA transmitter, analyzes and processes it to complete the digital display and alarm operation.
Applicable objects: This system supports the input signals of various standard transmitters. Such as gas transmitters: carbon monoxide, hydrogen sulfide, hydrogen, sulfur dioxide, ammonia, oxygen, chlorine, combustible gases and other gas transmitters.
It can be used in oil exploration, oil and gas transportation, oil refining, metallurgy, power plants, chemicals, oil depots, liquefied gas stations, mines, tunnels, tunnels, underground pipelines and other places that require fire protection, explosion protection, and poisoning for gas safety detection and alarm.