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CA-91A LCD Combustible Gas Alarm Controller from China Suppliers | Factory Support for Up to 4 Detectors
Product Overview
CA-91A is a centralized compatible main & branch line combustible gas alarm controller. Equipped with central LCD screen, it displays monitoring data clearly and supports easy operation. It adopts four-bus signal transmission, compatible with RS485 bus-type and 4-20mA split-type gas detectors, and can be connected to a maximum of 4 detectors.
The controller supports concentration over-limit sound-light alarm and fault sound-light alarm. Built-in wireless remote transmission module, with reliable power supply lightning protection and signal lightning protection inside, greatly improving anti-interference performance. Multiple programmable signal outputs can realize linkage control of exhaust fans, solenoid valves and other equipment, suitable for commercial and industrial gas safety monitoring scenarios.
Application Sites
Commercial Places
LPG stations, gas boiler rooms, restaurants, villas, basements and other gas-consuming areas.
Industrial Places
Petrochemical industry, oil depots, automobile manufacturing, shipbuilding industry and other industrial sites.
Technical Parameters
Model
CA-91A Combustible Gas Alarm Controller
Working Voltage
AC220V±15%, 50Hz±1; DC12V/1.3Ah backup battery
Detector Power
DC24V 0.6A
Communication
RS485 (Bus type) / 4-20mA (Split type)
Max. Detectors
4 units
Signal Distance
≤1000m
Max Output Current
0.6A
Output Signal
3 groups programmable relay switch; 1 group DC24V pulse
Working Env.
Temp: -10℃ ~ +55℃; Humidity: ≤95%RH
Dimension
250mm × 185mm × 65mm
Weight
Approx. 2.2kg
Frequently Asked Questions
How many gas detectors can be connected to the CA-91A controller?
The CA-91A gas alarm controller supports the connection of a maximum of 4 gas detector units.
What communication modes are compatible with this controller?
It features a four-bus signal transmission design that is fully compatible with both RS485 bus-type and 4-20mA split-type gas detectors.
Does the CA-91A support linkage control with external equipment?
Yes. It features multiple programmable signal outputs (including 3 groups of programmable relay switches and 1 group of DC24V pulse output) to realize linkage control of exhaust fans, solenoid valves, and other equipment.
What is the maximum signal transmission distance for the detectors?
The controller supports a maximum signal transmission distance of up to 1000 meters.
What are the typical application sites for the CA-91A?
It is widely used in commercial places like LPG stations, gas boiler rooms, restaurants, and basements, as well as industrial settings including petrochemical plants, oil depots, automobile manufacturing, and shipbuilding sites.