Water Level Indicator Model XW-1, Xuzhou Weisi Water Level Monitoring Instrument

Technical Specifications
1. Water Level Range: Same as sensor (10m, 20m, 40m, 80m, etc.)
2. Discrimination: Same as sensor (1cm, 1mm, etc.)
3. Measurement Accuracy: Same as the sensor, ±0.1% of range ±1cm (or 1mm).
4. Display Method: 6-digit plus 2-digit LED display. The 6 digits represent the water level (4 digits for relative water level + 6 digits for altitude) displayed in red, with a character height of 0.56". The 2 digits are for the communication station number or other symbols displayed in green, with a character height of 0.3".
5. Connection method between sensor and display: multi-core cable (14~20 cores).
6. Input Code System (Sensor Output Code System): Cyclic Code (Gray Code) or other code system ( customizable).
7. Cable distance between sensor and display: Up to 2km.
8. Data Transmission Method (Optional):
RS-485 (Model XZ-1A), networked via a pair of twisted wires. Data transmission distance: 1.2km.
RS-485 Communication Protocol: 1) MOD-WS1 (MODBUS); 2) SDI-12.
2) 4~20mA current loop method (XZ-1B model), transmitted via a pair of wires.
The transmitted data above does not include altitude values.
9. Current Loop: Resolution: Same as sensor; Non-linearity: ±0.012%; Error: ±0.15%
10. Manual preset function
1) Lower Limit Pre-set: Zero at factory (4 digits, excluding altitude)
2) Upper Limit Preset: Factory-set value (4 digits, excluding altitude)
3) Mid-limit preset: factory setting value (4 digits, excluding altitude)
4) Altitude preset: Zero at factory (6 digits).
5) Range (for XZ-1B model only): Range (4 digits, excluding altitude)
6) Communication Station Number Preset: Typically set to 01 at factory.
11. Alarm and Control Functions
Alarm control signal: relay contacts. Contact capacity: 1A, 24VDC; 0.5A, 125VAC.
When the value is greater than or equal to the upper and middle limits, and less than or equal to the lower limit, the relay contacts will close and an audible and visual alarm will sound (decimal point in the data area will blink). The sound alarm duration is approximately 10 seconds. The middle limit will only activate the relay.
12. Display and sensor coupling: Photoelectric isolation
13. Working Method: Continuous Operation.
14. The monitor's single microcomputer is equipped with a Watchdog to prevent erratic operation.
15. Working Environment Temperature: 0℃ ~ +50℃, Relative Humidity: 85% (+25℃).

16. Power: 120VAC~264VAC, 47~440Hz. Power Consumption: <5W. Fuse: 2A.