1. Overview
The SWJ-3 water level/head monitor receives the analog signals sent by the upstream and downstream liquid level sensors respectively, and sends it to the CPU for processing and calculation after A/D conversion. The road standard analog quantities correspond to the upstream water level, downstream water level, and water head, respectively. The monitor outputs six alarm relays, three standard analogs, and one RS485 serial communication, and parameters such as range, elevation, alarm value, and alarm nature can be set arbitrarily by pressing buttons.
2. Features
The intelligent monitoring device with single-chip microcomputer as the core processor has strong applicability.
Output the standard analog signal corresponding to the range.
Provides alarm status display and six-level alarm output contacts, and the six-level alarm value can be set independently.
The altitude can be set according to the local environment.
With power-off protection, automatic memory function.
Perfect system self-check function.
The working power supply (+24V) of the transmitter can be provided.
3. Technical performance
Display mode: LED highlight digital tube display is clear and intuitive.
Output signal: standard 4-20mA output (load resistance≤525Ω)
Alarm output: Contact form: normally open contact.
Contact capacity: 5A/AC220V, 2A/DC30V.
Alarm setting: The alarm value can be arbitrarily set between the upper and lower limits of the range.
Working power supply: switching power supply AC85~265V, DC110~340V.
Power consumption: 10W.
The instrument provides a transmitter: DC24V power supply, the transmitter does not need an external power supply.
Environmental conditions: Temperature: Working temperature: 0℃~40℃.
Storage temperature: -25℃~+70℃.
Relative humidity: ≤85%RH.
4. Panel description
5. Terminals
6. Installation size
The appearance of the instrument and the size of the opening are shown in the following figure:
