Analog acquisition module 4-20ma

product description:

The analog acquisition module is used for various sensor data collection. It can collect current and voltage signals of multiple ranges and has the characteristics of high precision and multiple ranges. Supports 4-channel dry (wet) node detection and is compatible with Modbus RTU/TCP protocol. Local logical operations are also supported. In addition to providing AI (analog current 4~20mA detection) and AO analog output interfaces, it also provides 1 RS485 interface. The product takes “remote control” as the core function and is highly easy to use. Users can easily and quickly integrate it into their own systems.

Product display

producto	Network/Model	interface	Function
	4G full network communication ZHC4661	1RS485/4AI/2AO	Supports special functions such as Modbus RTU/TCP adaptive, automatic collection and active reporting, 4~20mA analog control collection, automatic calibration threshold reporting, etc.
	Ethernet ZHC1661	1RS485/4AI/2AO	4-20mA analog automatic reporting, 12-bit sampling accuracy, AO remote following AI, configuration cloud real-time monitoring PLC, automatic IP address acquisition, DNS domain name resolution and other special functions
	LoRa network ZHC0661	1RS485/4AI/2AO	It has local logic and inter-device logic settings, AI range conversion, and supports AES communication encryption. Using the serial port for sending and receiving lowers the threshold for wireless applications and enables data transmission from the serial port to LoRa.

Applications:

1. Building Automation
Roof water tank depth, water tank water temperature, indoor smoke detection, alarm switch
2. Intelligent Transportation System
Take the subway as an example: traffic lights, carbon dioxide concentration monitoring, oxygen concentration monitoring, smoke concentration monitoring, exhaust fan control
3. Water Management System
Water level control monitoring and alarm, water flow monitoring, water pollution index control, water temperature monitoring
4. Intelligent Transportation for Highways
Vehicle passage detection and traffic light control
5. Power Management System
Examples of wind power stations, wind speed monitoring, windmill speed monitoring, voltage monitoring, current monitoring
6. Environmental Monitoring
Temperature, humidity, wind speed, air composition monitoring
7. Factory Automation

basic skills:

√ China Mobile, China Unicom, China Telecom 4G high speed

√ Data transparent transmission serial port heartbeat package

√ 4 channels of analog detection AI2 channels of analog output AO

√ TCP_Client, HTTP_ClientModbus RTU/TCP

√ Host, slave mode, master mode

√ Support RS485 cascading of multiple devices

√ Cloud forwarding, cloud networking

√ Set up APN network registration package and heartbeat package

√ Hardware watchdog SIM card number query

√ Local upgrade, remote upgrade of host computer, rapid configuration of virtual serial port remote operation